At Farrow Built, we know that picking the perfect foundation for your new post-frame building is key, and we're here to help! Check out our five fantastic options, designed to suit a variety of needs for your next project.
Screw Piles
Our top choice for post-frame foundations when the site allows it. Screw piles are engineered to provide solid support from the base up, with each pile installed to meet specific uplift and load-bearing requirements. This is achieved by measuring torque during installation, ensuring the pile will anchor securely in the ground. Screw piles are built to last well over 100 years, making them a highly durable post-frame foundation option.
Pros: Reliable, engineered to withstand both uplift and load, incredibly durable
Cons: Unsuitable for very rocky or bedrock-laden ground, and challenging on sloped sites where retaining walls are needed.
True Columns
True Columns offer a comparable alternative to screw piles for post-frame foundations. Installed by augering holes, True Columns are lightweight and cost-effective, making them a great option, especially for DIY builders. They’re engineered for stability and long-term performance but require augering, which can make installation messier than screw piles.
Pros: Cost-effective, easy to install, engineered for durability
Cons: Creates more mess during installation due to augering.
Concrete Pilings
Concrete pilings are often the best solution if your post-frame foundation site has extremely rocky soil or bedrock. The process involves augering a hole, pouring concrete with rebar reinforcement, and setting a saddle at the top to secure the post. Concrete pilings provide stability on difficult ground where other foundation options may not hold up.
Pros: Ideal for rocky or bedrock conditions, engineered with rebar for strength
Cons: More labour-intensive and may require specialized installation.
Concrete Foundation Wall Post-Frame Foundation
On sloped sites or in agricultural applications, concrete foundation walls offer excellent support and durability for post-frame buildings. This foundation type doubles as a retaining wall on sloped sites and can withstand heavy-duty cleaning equipment. For barns or agricultural buildings, the exposed concrete allows you to scrape or clean against the wall without damaging the structure.
Pros: Great for sloped sites, durable in agricultural settings, provides a solid scraping surface
Cons: High cost and added excavation requirements.
Wood Posts in the Ground
Once a popular post-frame foundation option, wood posts in the ground remain the most budget-friendly choice. However, over time, posts can rot—something we’re seeing more often in buildings just 20-40 years old. Although newer pressure-treated wood is eco-friendlier, it doesn’t last as long. For those on a tight budget, wood posts can work but expect a shorter lifespan and potentially costly repairs down the line.
Pros: Most affordable foundation option
Cons: Limited durability, risk of rotting, shorter lifespan with newer pressure-treated wood.
Selecting the perfect foundation is crucial for the durability and prosperity of your post-frame construction. Every choice comes with its own advantages, and here at Farrow Built, we are excited to assist you in discovering the foundation that perfectly fits your requirements. Don't hesitate to get in touch with our team today to chat about your project and ensure that your building stands strong on a reliable base for many years ahead.
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