# Swine Barn Renovation: Upgrading Old Facilities ## Key Takeaways - Prioritize structural integrity and the building envelope (walls, roof, insulation) as the foundation for renovation; if these are failing, new construction is often more economically viable than extensive repairs. - Ventilation system upgrades are paramount, focusing on variable-speed fans, motorized inlets, and modern controllers to manage temperature, humidity, and air quality, directly impacting pig health and feed efficiency. - Flooring and manure system integrity are critical; address slat condition, pit integrity, and manure handling before cosmetic upgrades, as widespread concrete failure often signals the need for new construction. - Biosecurity must be integrated into the renovation design, establishing clear clean-dirty lines, wash-down protocols, and rodent/bird control measures to prevent disease introduction during and after construction. - A thorough assessment by a structural engineer and evaluation of concrete, ventilation, and manure systems are essential before committing to a renovation plan, with a 50% rule of thumb suggesting replacement if repair costs exceed half the price of new components. - Budget for unexpected structural issues by setting aside 10-20% of the total project cost, and calculate the payback period based on projected improvements in pig performance, labor, and energy costs to justify the investment. --- Renovating an existing swine barn can extend the life of your operation, improve animal welfare, and reduce labor demands without the full cost of new construction. This guide walks through the complete planning and execution process for upgrading older pig housing, whether you run a farrow-to-finish operation, a wean-to-finish site, or a breeding and gestation barn. It covers structural assessment, ventilation and heating upgrades, flooring and manure system improvements, feed and water system modernization, biosecurity considerations, and the decision points that tell you whether renovation makes sense at all. The intended readers are farm owners and managers who are considering a remodel, working with contractors, or trying to prioritize upgrades across multiple barns. ## At a Glance | Topic | Key Takeaway | |---|---| | When to renovate | Renovate when the building shell is sound and payback is under 5 to 7 years. Tear down if concrete is failing, walls are rotting, or the layout cannot meet modern pig flow needs. | | First priority | Fix ventilation, insulation, and air quality before anything else. Pig health and feed efficiency depend on it. | | Budget planning | Set aside 10 to 20 percent of the total project cost for unexpected structural issues discovered during demolition. | | Flooring and manure | Address slat condition, pit integrity, and manure handling before installing new gates or feeders. | | Biosecurity | Plan a clean-dirty line and a wash-down protocol into the renovation itself. New equipment does not matter if you track disease in during construction. | | Permits and rules | Check zoning, building codes, and environmental permits before you order materials. Rural counties enforce these differently. | | Professional help | Call your extension agent before you commit to a design. Call your veterinarian before you change air speed, stocking density, or group size. | | Recordkeeping | Keep a renovation file with photos, material specs, contractor warranties, and manure system changes for at least 10 years. | ## Why Old Swine Barns Need Renovation Most working swine barns in the United States were built between 1970 and 2005. That means a large share of the national herd is housed in facilities that predate modern understanding of pig ventilation needs, disease transmission, and worker safety. The reasons to renovate fall into a few categories. ### Structural Aging and Deterioration Concrete slats crack and spall after 15 to 25 years of exposure to manure acids and pressure washing. Rebar corrodes, expands, and pops the concrete surface. Wood trusses in older barns can rot at the bearing points, especially where condensation drips. Steel siding corrodes along the bottom edge where it contacts urine and wash water. Insulation settles, sags, or becomes infested with rodents and birds. None of these problems announce themselves loudly. A barn can look fine from the outside while the interior is slowly failing. The first obvious signs are often drafts in winter, hot spots in summer, and a persistent ammonia smell that the ventilation system cannot clear. ### Changes in Production Practices The way pigs are raised has changed significantly in the last two decades. Group housing for gestating sows is now the expected standard in many markets. Wean-to-finish barns replaced separate nursery and finisher buildings on many operations. All-in-all-out pig flow by room or by site demands more partitions, better washing access, and more precise ventilation control than old continuous-flow barns were designed for. If your barn layout forces you to run a continuous-flow system when you want to run all-in-all-out, renovation can fix that. If your gestation stalls are welded into place and you cannot convert to group housing without cutting them out, that is a renovation project in itself. ### Rising Energy and Labor Costs Old barns leak heat in winter and cannot move enough air in summer. The result is high propane or natural gas bills, more hours spent adjusting curtains and fans, and more pig losses during heat stress. Modern ventilation controllers, variable-speed fans, and better insulation pay for themselves through lower energy use and fewer labor hours. ### Disease Pressure and Biosecurity [Porcine reproductive and respiratory syndrome](/knowledge/viruses/general/porcine-reproductive-and-respiratory-syndrome-genomic-surveillance-and-vaccine-strategies-using-bioinformatics) (PRRS), [porcine epidemic diarrhea virus](/knowledge/viruses/livestock-viruses/porcine-epidemic-diarrhea-virus) (PEDV), and other pathogens have pushed the industry toward stricter biosecurity. Old barns with shared air spaces, difficult-to-clean surfaces, and poor drainage between rooms are harder to sanitize. Renovation can create better room separation, smoother concrete surfaces, and dedicated load-in and load-out chutes that support a higher level of biosecurity. ## Step 1: Assess the Current Building Before you spend money on a design or order a single fan, you need a complete picture of what you are working with. This assessment should take several days and should involve people who are not emotionally attached to the building. ### Hire a Structural Engineer A licensed structural engineer is worth the fee for any barn over 10 years old. They will look at the foundation, the wall system, the roof trusses, and the concrete floors. They can tell you whether the building can support the changes you want to make, such as adding a ceiling, hanging heavy feed lines, or installing pit ventilation ducts. Ask the engineer specifically about: - Concrete strength and surface condition in the slats and solid floors - Rebar condition in the slats and pit walls - Truss condition, especially at bearing points and splice locations - Wall anchorage and wind load capacity - Foundation condition, including frost heave and settlement cracks - The condition of any load-bearing interior walls or columns The engineer should give you a written report with a list of deficiencies and a rough cost to fix each one. This report is your decision-making tool. If the engineer says the building is sound, you can proceed with renovation. If they find major structural issues, you need to compare the cost of fixing them against the cost of new construction. ### Check the Concrete Concrete in a swine barn takes a beating that no other agricultural building matches. Manure acids attack the surface, pressure washing erodes it, and temperature changes cause spalling. Walk every alley and look at every slat. Signs of concrete failure include: - Surface pitting or flaking that exposes aggregate - Cracks wider than one-eighth inch - Spalled edges on slats where the rebar is visible - Soft or crumbly concrete that you can scrape with a screwdriver - Uneven slats that rock or shift under foot - Pits that do not drain completely after washing If the concrete is failing in isolated spots, you can patch those areas. If the failure is widespread, you need to consider replacing the floor entirely, which is often the point where new construction becomes more attractive than renovation. ### Evaluate the Ventilation System Old barns were often built with natural ventilation or simple negative-pressure systems with a few large fans and curtain inlets. These systems work but they lack the precision that modern pig production demands. Walk through the barn and note: - The condition and age of all fans - Whether the fans are belt-driven or direct-drive - The condition of shutters and louvers - The type and condition of air inlets - Whether the inlets can be adjusted room by room - The presence or absence of pit ventilation - The type of ventilation controller, if any - The condition of the electrical service that powers the fans A modern ventilation system uses variable-speed fans, motorized inlets, and a controller that adjusts airflow based on room temperature, pig weight, and outside conditions. If your barn has manual curtains and thermostats that control fans in on-off mode, that is a major renovation target. ### Inspect the Manure System The manure handling system is the most expensive part of any swine barn renovation, and it is also the part that is hardest to change after the fact. You need to know exactly what you have before you plan anything else. Document: - The type of pit (deep pit, shallow pit with pull-plug, flush system, or scrape system) - The depth and condition of the pit - The location and condition of all pit access ports - The condition of the pit ventilation system, if one exists - The type of slats and their condition - The location and capacity of the manure storage, whether in-ground or above-ground - The distance to the nearest field or manure application site If you have a deep pit system, the biggest renovation question is whether to add pit ventilation or replace the slats. If you have a shallow pit with pull-plug, you may want to convert to a deep pit to reduce labor and odor. Both are major projects. ### Assess the Feed and Water Systems Old feed systems may use augers that are undersized for modern rations, or they may have drop locations that do not match your current pen layout. Water systems may use nipple drinkers that are worn or positioned for smaller pigs than you now raise in that barn. Walk the full length of every feed line and note: - The diameter and condition of the auger tube - The condition of all drops and feeders - The location of every water line and drinker - The condition of the water lines, including any signs of leaks - The water pressure and flow rate at the far end of each line If you are changing pen sizes or converting from stalls to group housing, you will need to relocate feed drops and water lines anyway. That work is easier to do during a renovation than after the barn is restocked. ## Step 2: Decide What to Keep and What to Replace Once you have the assessment report, you need to make a clear list of what stays, what gets repaired, and what gets replaced. This is where many renovation projects go wrong. Farmers often try to keep everything that still works, even when replacing it would save money in the long run. ### The 50 Percent Rule A useful rule of thumb: if the cost of renovating a component exceeds 50 percent of the cost of replacing it with new, buy new. This applies to ventilation systems, feed systems, gates, and especially the building envelope. A 20-year-old ventilation system with worn shutters, rusted fan housings, and an outdated controller will cost almost as much to repair as to replace. A new system will be more efficient, more reliable, and easier to service. The same logic applies to feeders that are rusted, gates that are bent, and drinkers that no longer seal. ### The Building Envelope Is the Foundation The walls, roof, and insulation are the hardest and most expensive parts to change. If the building envelope is in good shape, the renovation is worth doing. If the envelope is failing, you are essentially building a new barn inside an old shell, and that rarely makes financial sense. A good building envelope has: - Continuous insulation in the walls and ceiling with no gaps - A vapor barrier on the warm side of the insulation - No air leaks around doors, fans, or wall joints - A roof that does not leak and is not rusted through - Walls that are straight and plumb If your barn fails any of these tests, get a quote for fixing the envelope before you plan any interior work. ### Room Layout and Pig Flow The interior layout of an old barn may or may not match your current production system. Look at each room and ask whether it can support all-in-all-out pig flow. All-in-all-out requires: - Rooms that can be completely emptied and washed - Doors that seal tightly between rooms - Separate air spaces for each room, or at least the ability to isolate airflow - Dedicated alleys for moving pigs in and out without crossing dirty paths If your barn was built for continuous flow, the interior walls may not extend to the ceiling, or the ventilation may recirculate air between rooms. Both problems can be fixed during renovation, but they add cost. ### Gestation and Farrowing Considerations If you are renovating a gestation barn, the biggest decision is whether to convert from stalls to group housing. This is not just a matter of removing stalls. Group housing requires: - Larger pens with proper floor space per sow - Electronic sow feeding stations or a floor-feeding system - Multiple drinkers per pen - Good drainage and a non-slip floor surface - A layout that allows sows to escape aggression If you are renovating a farrowing barn, the priorities are different. Farrowing crates are smaller and more standardized. The main renovation targets are the flooring, the ventilation, and the ability to wash thoroughly between groups. ## Step 3: Plan the Ventilation Upgrade Ventilation is the single most important system in a swine barn. It controls temperature, humidity, and air quality, and it directly affects pig health, growth rate, and mortality. If you only do one upgrade, make it this one. ### Minimum Ventilation The minimum ventilation rate removes moisture and gases during cold weather. For a finishing barn, the minimum rate is typically 10 to 20 cubic feet per minute (CFM) per pig, depending on pig weight and outside temperature. For a farrowing barn, the minimum is higher, around 20 to 30 CFM per sow, because the sows are large and the room is warm. The minimum ventilation system must run continuously in cold weather. It uses small fans that run at low speed, often with a variable-speed controller. The inlet system must be designed to distribute this small amount of air evenly without creating drafts on the pigs. ### Transition and Tunnel Ventilation As outside temperature rises, the ventilation system must move more air. Transition ventilation uses additional fans and inlets to increase airflow to 40 to 60 CFM per pig. Tunnel ventilation moves air along the length of the barn at high speed, providing wind-chill cooling for pigs during hot weather. Tunnel ventilation requires a barn that is relatively long and narrow, with an inlet at one end and fans at the other. Many old barns are not shaped for tunnel ventilation. If yours is not, you can still use a combination of sidewall fans and ceiling inlets to achieve adequate summer airflow. ### Pit Ventilation Pit ventilation is a separate system that pulls air from the manure pit, not from the room. It removes gases like hydrogen sulfide and ammonia before they can rise into the pig zone. Modern pit ventilation uses a small fan for every 20 to 30 feet of pit length, exhausting directly to the outside. If your barn does not have pit ventilation, adding it is one of the most valuable upgrades you can make. It improves air quality, reduces respiratory disease, and lowers the risk of gas buildup during agitation and pumping. ### Ventilation Controllers A modern ventilation controller does more than turn fans on and off. It monitors room temperature, outside temperature, and sometimes humidity. It adjusts fan speed continuously to match the ventilation rate to the heat load in the room. It also controls the inlets, opening them wider as the fans speed up. Choose a controller that is easy to program and that your employees can learn to use. Some controllers offer remote monitoring through a smartphone app, which can alert you to a fan failure or power outage before you lose pigs. ### Inlet Design The inlets are as important as the fans. They must be positioned to distribute air evenly across the room, and they must be sized to match the fan capacity. If the inlets are too small, the fans will create negative pressure that pulls air through cracks and around doors. If they are too large, the air will be too slow to mix properly. For cold weather, use ceiling inlets that direct air along the ceiling, allowing it to warm before it falls into the pig zone. For warm weather, use sidewall inlets that can be opened fully to move large volumes of air. ## Step 4: Upgrade Insulation and the Building Envelope Insulation is the partner to ventilation. Without good insulation, the ventilation system cannot maintain a stable temperature, and energy costs will eat into your margins. ### Insulation Values For a swine barn in a cold climate, use at least R-19 in the walls and R-30 in the ceiling. In a moderate climate, R-13 in the walls and R-19 in the ceiling may be adequate. These values assume the insulation is properly installed with no gaps and a vapor barrier on the warm side. Check the existing insulation during your assessment. Look for: - Settling or sagging in ceiling insulation - Gaps around windows, doors, and fan openings - Evidence of rodent or bird damage - Moisture stains that indicate condensation problems - Deterioration of the vapor barrier If the insulation is in poor condition, remove it and install new. This is messy work, but it is the only way to get a tight building envelope. ### Air Sealing Air leaks are the enemy of ventilation control. Every crack and gap lets cold air in during winter and lets conditioned air out during summer. The result is drafts on the pigs, condensation on the walls, and wasted energy. Seal all penetrations in the building envelope, including: - Gaps around fan housings - Gaps around electrical conduit and water lines - Cracks where the wall meets the floor - Gaps around doors and windows - Joints between wall panels Use a high-quality polyurethane caulk or expanding foam for small gaps. For larger openings, use rigid foam board and seal the edges with tape or caulk. ### Condensation Control Condensation is a sign that the ventilation system is not removing moisture fast enough, or that the building envelope is not properly insulated. Condensation on the walls and ceiling leads to rust, rot, and mold. The fix is threefold: 1. Improve the ventilation rate, especially during cold weather when the air is dry and the moisture load is high 2. Improve the insulation and vapor barrier to keep the warm, moist interior air away from the cold exterior surfaces 3. Reduce the moisture load in the barn by fixing leaking drinkers, cleaning up spills, and ensuring good drainage ## Step 5: Repair or Replace Flooring and Manure Systems The floor and manure system are the most expensive components of a swine barn, and they are also the hardest to change after the fact. Get this part right. ### Slat Replacement Concrete slats have a service life of 15 to 30 years, depending on the quality of the concrete and the conditions in the barn. When slats fail, they create a hazard for the pigs and for workers. A pig that catches a foot in a broken slat can break a leg. A worker can do the same. If you are replacing slats, you have three main options: - Precast concrete slats, which are durable and familiar but heavy and difficult to install - Plastic slats, which are lighter and easier to install but more expensive per square foot - Cast iron slats, which are strong and long-lasting but expensive For most renovations, precast concrete slats are the standard choice. They match the existing floor height, they are durable, and they are available from most agricultural concrete suppliers. ### Patching and Resurfacing If the slats are in generally good condition but have isolated damage, you can patch them. Use a high-strength concrete repair product designed for wet environments. Clean the damaged area thoroughly, remove all loose material, and apply the patch in thin layers. For solid floors, you can resurface with a self-leveling concrete overlay. This smooths out rough surfaces and makes the floor easier to clean. It also improves traction for the pigs. ### Manure Pit Considerations If you have a deep pit, the pit walls and floor are probably in better condition than the slats, because they are not exposed to temperature changes or direct wear. However, the pit can still develop cracks that leak manure into the soil, which is an environmental hazard. Inspect the pit for: - Cracks in the walls and floor - Evidence of leaks around the pit edges - Deterioration of the pit ventilation system - Build-up of sludge that reduces pit capacity If the pit is in good condition, you can keep it and simply replace the slats and add pit ventilation. If the pit is failing, you need to decide whether to repair it or replace the entire manure system. ### Converting to a Different Manure System Some renovations involve changing the manure system entirely. For example, you might convert from a shallow pit with pull-plug to a deep pit, or from a flush system to a scrape system. These conversions are major projects that require: - Excavation and concrete work - New plumbing and pumps - Changes to the ventilation system - New permits and environmental review Before you commit to a manure system conversion, get quotes from at least two contractors and check with your state environmental agency about permit requirements. ## Step 6: Modernize Feed and Water Systems Once the structure, ventilation, and flooring are in place, you can focus on the feed and water systems. These are the components that affect daily labor and pig performance. ### Feed Delivery Systems Modern feed systems use augers or chains to move feed from a central bin to drops in each pen. The system should be sized to deliver the maximum feed demand without excessive wear or energy use. When upgrading a feed system, consider: - The diameter of the auger tube, which should be at least 4 inches for most applications - The capacity of the drive unit, which should match the length of the line - The type of drop, which should be adjustable for feed rate - The condition of the feed bin and the auger boot If you are changing pen sizes, you will need to relocate the drops. Plan the new pen layout before you order the feed system parts. ### Waterers and Drinkers Pigs need clean, fresh water at all times. Nipple drinkers are the standard choice, but they need to be positioned at the right height and flow rate for the pig size. For a renovation, consider upgrading to cup drinkers or swing drinkers, which reduce water waste and keep the floor drier. These are especially useful in farrowing and nursery rooms. For group-housed sows, you need at least one drinker per 10 sows, positioned to reduce competition. Drinking water flow should be at least 1 quart per minute for sows and 1 pint per minute for growing pigs. ### Water Quality Old water lines can accumulate scale, rust, and biofilm that reduce flow and harbor bacteria. Before you restock the barn, flush the lines and test the water quality. If the water tests show high levels of iron, sulfur, or bacteria, you may need to install a water treatment system. This can be as simple as a sediment filter or as complex as a reverse osmosis system, depending on the water quality and the needs of the pigs. ## Step 7: Improve Biosecurity and Cleaning Access A renovation is the perfect time to improve the biosecurity of your facility. The goal is to make the barn easier to clean, easier to disinfect, and easier to protect from outside contamination. ### Clean-Dirty Line Every barn should have a clear clean-dirty line that separates the clean area from the dirty area. This line is where you change boots and coveralls before entering the animal area. During renovation, you can install a permanent bench or partition that defines this line. You can also add a boot wash station and a hand-washing station. ### Washing and Disinfecting The ability to wash and disinfect a barn thoroughly between groups is critical for disease control. This requires: - Smooth, non-porous surfaces that can be scrubbed and rinsed - Good drainage so that wash water does not pool - Access to hot water and high-pressure washing equipment - A place to store cleaning chemicals and disinfectants If your old barn has rough concrete, wood surfaces, or poor drainage, the renovation should address these issues. ### Rodent and Bird Control Rodents and birds are major vectors for swine diseases. They can also damage the building envelope and contaminate feed. During renovation, take the opportunity to: - Seal all gaps and holes that allow rodents to enter - Install rodent bait stations around the perimeter - Install bird netting over open eaves and vents - Remove any nesting sites near the barn ### Ventilation and Disease Transmission If you are renovating a multi-room barn, consider how the ventilation system affects disease transmission between rooms. Ideally, each room should have its own air supply and exhaust, so that air does not recirculate from one room to another. This may require separate ventilation systems for each room, or at least the ability to isolate rooms by closing dampers and shutting off fans. Your ventilation contractor can help you design a system that supports all-in-all-out management. ## Step 8: Plan the Construction Sequence Renovating a barn while it is in use is difficult and risky. The dust, noise, and disruption stress the pigs, and the construction workers can introduce disease. In most cases, it is better to empty the barn completely before starting construction. ### Empty the Barn Plan to have the barn empty for at least 4 to 6 weeks for a major renovation. This allows time for: - Complete washing and disinfecting of the old facility - Construction and demolition work - Installation of new systems - Final cleaning and inspection before restocking If you run a continuous-flow operation, you may need to adjust your pig flow or contract with another producer to finish your pigs during the renovation. ### Coordinate with Your Veterinarian Your veterinarian should be involved in the renovation planning, especially if you are changing ventilation, group size, or stocking density. They can help you plan the health protocols for the new facility and the transition period when you restock. ### Hire Experienced Contractors Swine barn renovation is specialized work. A general contractor who builds houses may not understand the requirements for ventilation, manure handling, and biosecurity. Look for contractors who have experience with agricultural buildings, and ask for references from other swine producers. ### Staging the Work If you have multiple barns, you may be able to renovate them one at a time, moving pigs from the renovated barn to the unrenovated barn and back. This spreads the cost over several years and reduces the impact on your cash flow. However, this approach has risks. The pigs that stay in the old barns are at higher risk of disease and poor performance, and the renovation work may be less efficient if you are working around pigs in adjacent barns. ## Step 9: Budget and Financing A swine barn renovation is a major capital investment. You need a realistic budget that includes not just the construction costs but also the costs of lost production, financing, and unexpected surprises. ### Construction Costs The cost of a renovation varies widely depending on the scope of the work and the region of the country. As a rough guide: - Ventilation system upgrade: $10,000 to $30,000 per room - Insulation and air sealing: $5,000 to $15,000 per barn - Slat replacement: $15,000 to $40,000 per 1,000 square feet - Feed system upgrade: $10,000 to $25,000 per barn - Water system upgrade: $3,000 to $8,000 per barn - Biosecurity improvements: $2,000 to $10,000 per barn These are rough estimates only. Get firm quotes from contractors before you commit to the project. ### Hidden Costs Every renovation project has hidden costs. Set aside 10 to 20 percent of the total budget for: - Structural issues discovered during demolition - Changes to the design that are required by building codes - Additional electrical work to support new equipment - Disposal costs for old materials - Rental costs for temporary housing or equipment ### Lost Production The cost of lost production during the renovation is often the largest hidden cost. If the barn is empty for 6 weeks, you lose the revenue from the pigs that would have been raised in that time. Calculate this cost before you start. If the lost production is more than the cost of the renovation, you may want to reconsider the project or find a way to phase it. ### Financing Options Most farmers finance a major renovation through an agricultural lender. You will need a business plan that shows the expected return on investment, including: - Increased pig performance (better feed conversion, lower mortality) - Reduced labor costs - Lower energy costs - Higher pig prices if you are producing to a specific market Your lender may also require an appraisal of the property and a contractor quote before approving the loan. ## Step 10: Monitoring and Recordkeeping After Renovation The renovation does not end when the last pig is loaded. You need to monitor the performance of the new systems and keep records that will help you make future decisions. ### Track Performance Metrics Compare the performance of the renovated barn to the old barn or to your other barns. Key metrics include: - Average daily gain - [Feed conversion ratio](/knowledge/animal-farming/poultry/feed-conversion-ratio-measuring-improving-poultry-efficiency) - Mortality and culling rates - Medication costs - Energy use per pig - Labor hours per pig Keep these records for at least 2 years to get a full picture of the renovation's impact. ### Ventilation System Monitoring A modern ventilation controller can log temperature, humidity, and fan operation data. Review these logs regularly to ensure the system is performing as designed. Watch for: - Temperature swings that suggest the controller is not calibrated - Fan run times that are much higher or lower than expected - Inlet positions that do not match the fan speed - Alarms that indicate a fan or sensor failure ### Manure System Maintenance The manure system needs regular maintenance to prevent problems: - Inspect the pit periodically for cracks and leaks - Check the pit ventilation fans for proper operation - Agitate and pump the pit on a regular schedule - Keep the pit access ports sealed to prevent gas escape ### When to Call Your Veterinarian If you notice a decline in pig health after the renovation, call your veterinarian right away. The renovation may have introduced a new pathogen, or the new ventilation system may be creating drafts or temperature swings that stress the pigs. Signs that warrant a veterinary call include: - Increased coughing or sneezing - Increased mortality, especially in the first 2 weeks after restocking - Reduced feed intake or water intake - Pigs huddling or panting, which indicates temperature stress - Lameness or foot injuries that may be caused by new flooring ### When to Call Your Extension Agent Your local extension agent can help you with: - Evaluating the performance of the renovated barn - Troubleshooting ventilation problems - Comparing your results to regional averages - Applying for cost-share programs for conservation or environmental improvements - Developing a manure management plan for the renovated facility ## Common Mistakes in Swine Barn Renovation ### Underestimating the Scope Many farmers start a renovation project thinking they will just replace the fans and fix the gates. Then they discover the insulation is rotten, the slats are failing, and the pit is cracked. The project grows in scope and cost. The fix is to do a thorough assessment before you start. Hire the structural engineer, walk the barn with your contractor, and get written quotes for the full scope of work. ### Cutting Corners on Ventilation Ventilation is the most important system in the barn, but it is also the easiest to underfund. Farmers often buy cheaper fans, skip the pit ventilation, or reuse an old controller to save money. This is a false economy. A poorly designed ventilation system will cost you more in pig performance and energy use than you saved on the equipment. ### Ignoring Biosecurity During Construction Construction workers can track in disease just as easily as a visitor can. If the workers walk through the barn without changing boots, they can bring in pathogens from their previous job. Set up a clear biosecurity protocol for the construction crew. Provide them with clean boots and coveralls, and require them to use the same entry and exit procedures as your employees. ### Not Planning for the Future A renovation should look forward, not backward. If you are renovating for your current production system, you may be back in the barn in 10 years doing another renovation. Think about how the industry is changing. Is there a move toward group housing? Toward larger group sizes? Toward more automation? Build flexibility into your renovation so that you can adapt to future changes. ### Forgetting About the Workers A renovated barn should be easier to work in, not harder. Make sure the renovation includes: - Good lighting in all work areas - Non-slip flooring in the alleys - Easy access to the ventilation controller - Properly positioned gates that are easy to operate - A clean and comfortable break area for workers ## Decision Thresholds: When to Renovate vs. Build New The decision to renovate or build new is one of the hardest calls in swine production. There is no single formula, but there are some clear signposts. ### Renovate When: - The building envelope is sound and can be insulated and sealed - The concrete floor and pit are in good condition - The layout can be adapted to your production system with reasonable changes - The renovation cost is less than 60 percent of the cost of new construction - The payback period is less than 5 to 7 years - You can empty the barn for the renovation without disrupting your cash flow ### Build New When: - The building envelope is failing, with rotting trusses, rusted steel, or a cracked foundation - The concrete floor and pit need complete replacement - The layout cannot support modern pig flow or biosecurity requirements - The renovation cost exceeds 60 percent of new construction - The barn is in a location that limits expansion or creates environmental problems - You need a larger facility than the existing barn can provide ### The Payback Calculation To calculate the payback period, estimate the annual benefits of the renovation: - Increased revenue from better pig performance - Reduced costs from lower energy use and labor - Reduced mortality and medication costs Divide the total renovation cost by the annual benefit to get the payback period in years. If the payback is longer than 7 years, the renovation may not be worth doing. ## Frequently Asked Questions ### How long does a swine barn renovation take? A typical renovation takes 4 to 8 weeks for a single barn, depending on the scope of work. A simple ventilation upgrade might take 1 to 2 weeks. A full renovation with slat replacement, insulation, and new feed and water systems can take 2 to 3 months. Plan to have the barn empty for the entire construction period, plus 1 to 2 weeks for washing and disinfecting before restocking. ### What is the most important upgrade to make first? Ventilation is always the first priority. If the barn cannot maintain proper temperature, humidity, and air quality, no other upgrade will matter. After ventilation, focus on insulation and air sealing to make the ventilation system efficient. Then address flooring and manure handling, followed by feed and water systems. ### Can I renovate a barn while pigs are still in it? It is possible for small projects, like replacing a feeder or fixing a water line, but it is not recommended for major renovations. Construction dust and noise stress the pigs, and construction workers can introduce disease. The disruption to the pigs will likely cost you more in lost performance than the cost of housing them elsewhere during the renovation. ### How much does a swine barn renovation cost per pig space? The cost varies widely by region and scope. As a rough guide, a basic ventilation and insulation upgrade might cost $50 to $100 per pig space. A full renovation with new slats, manure system improvements, and feed and water systems can cost $200 to $400 per pig space. Get firm quotes from contractors for your specific situation. ### Do I need a building permit for a swine barn renovation? It depends on your location and the scope of the work. Many rural counties do not require permits for agricultural buildings, but some do. You will likely need an environmental permit if you are changing the manure system. Check with your county planning office and your state agricultural department before you start. ### How do I know if my barn's concrete is still sound? Hire a structural engineer or an agricultural engineer to assess the concrete. They can test the surface hardness, check for rebar corrosion, and evaluate the overall condition. As a quick field test, tap the concrete with a hammer. A dull thud suggests delamination, while a clear ring suggests sound concrete. But this test is not definitive, so get a professional opinion. ### What is the best ventilation system for an old barn? The best system depends on the barn's shape, size, and orientation. For most existing barns, a negative-pressure system with variable-speed fans, ceiling inlets, and a modern controller is the best choice. If the barn is long and narrow, tunnel ventilation can be added for summer cooling. Always include pit ventilation to remove gases from the manure pit. ### How do I prevent disease introduction during the renovation? Set up a clear biosecurity protocol before the construction crew arrives. Provide clean boots and coveralls for all workers. Require them to enter through the same clean-dirty line as your employees. Do not allow workers to bring in personal equipment or vehicles without cleaning them. After the construction is complete, wash and disinfect the entire barn before restocking. ## Related Farming Guides This section will be populated programmatically with links to other farming guides on this site. Please check back for related content on swine housing, ventilation design, biosecurity protocols, and barn construction. ## Related Clinical & Scientific Guides * [Pig Enrichment Programs and Behavior Monitoring](/knowledge/animal-farming/swine/pig-enrichment-programs-and-behavior-monitoring) * [Swine Handling Facility Design for Safe Pig Movement](/knowledge/animal-farming/swine/swine-handling-facility-design-safe-pig-movement) * [Swine Feeding Management for Grow-Finish Pigs](/knowledge/animal-farming/swine/swine-feeding-management-for-grow-finish-pigs) ## References - National Pork Board: https://www.pork.org/ - USDA APHIS Swine Health: https://www.aphis.usda.gov/livestock-poultry-disease/swine - FAO Pig Production: https://www.fao.org/pig-production-and-products/en/ - FAO Animal Production and Health: https://www.fao.org/animal-production/en/ - WOAH (World Organisation for Animal Health): https://www.woah.org/en/home/ > This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.