KEY TAKEAWAYS
- Post frame construction is an efficient structural system built on widely spaced laminated posts that carry loads directly into the ground, rather than a full concrete foundation.
- In the post frame world, “foundation” means how the posts are set below grade, not the formed and poured foundation in traditional builds.
- Clear-span interiors are a defining trait of these buildings because the exterior posts are heavy-duty and handle the loads; there are no interior load-bearing walls needed.
- Four core components define the system: laminated posts, engineered trusses, purlins/girts, and metal cladding create the shell of every building.
- “Pole building” and “post frame building” essentially describe the same system. The key difference lies in whether a building uses round poles or engineered laminated posts.
You want a building that works hard to make daily routines smoother and work more productively, without worrying about durability and longevity. Post structures give you open space, tall access points, and strength that stands up to Canadian seasons. The structure uses fewer foundation points than many systems and still delivers a solid, long‑lasting structure. You get room to move, room to store, and room to grow.
Rural property owners choose post frame for practical reasons. Clear spans keep interiors open for maneuvering equipment, and shop layouts remain flexible. Equipment doors can be wide and tall without complicated interior columns, while versatile designs tailor the building to your unique needs. The method adapts to farm buildings, acreage structures, equestrian facilities, commercial construction, and residential projects, like shouses that need a dependable structure.
What is a Post Frame Building?
A post frame building is a structural system built on widely spaced vertical posts that carry roof and wall loads directly into the ground. Engineered trusses span between those posts to create clear interiors without load-bearing walls, giving owners tall, open space that fits equipment, livestock, or workshop layouts. Horizontal members called purlins and girts support the roof and wall cladding, and trims finish the building to seal and protect the envelope.
Post frame buildings do not rely on a continuous concrete foundation like more traditional buildings. Instead, the structure transfers loads to the ground through the individual posts, reducing excavation requirements and eliminating the need for a full concrete foundation. Rather, the term ‘foundation’ refers to the way the posts are set below grade. Instead of a single standardized approach, post frame contractors offer different foundation options based on soil conditions, longevity goals, and budget. In some applications, wood posts are set directly into the ground, with pressure-treated material used anywhere the post contacts soil. Other systems add protective sleeves or barriers at ground level to improve moisture protection over time. Another option keeps wood entirely out of the ground by using buried piers made from concrete, steel, or other durable materials, with the wood posts attached above grade. Each approach is selected to match site conditions, expected service life, and overall project budget.
What Makes a Building Post Frame?
A building is post frame when it relies on a few core components working in unison. Vertical laminated posts carry roof and wall loads to the ground or to concrete piers. Engineered trusses span between those posts to create clear interiors without the need for load-bearing walls. Purlins and girts provide the horizontal framework that supports metal roof and wall cladding, completing a strong and durable building shell. These key elements appear in every post frame project.
Everything beyond these essentials becomes a matter of personalization rather than structure. You choose features based on use, such as tall equipment doors for farm machinery, ventilation for barns or workshops, or interior metal cladding for bright, cleanable surfaces.
“A post frame building is a strong, adaptable structure engineered to fit your land, your work, and your style.”
The Four Key Components
| Component | What it is | Why it matters for owners |
| Laminated posts | Vertical structural members that carry roof and wall loads | Strong, durable primary structure with capacity for tall walls and wide openings |
| Engineered trusses | Roof components spanning between posts | Clear span interiors sized for local snow loads and intended building width |
| Purlins & girts | Horizontal framing members connect posts and trusses | Stiffness, fastening surfaces, and proper load transfer across the structure |
| Metal cladding | Exterior steel panels for roof and walls | Durable protection, weather resistance, and a clean, low-maintenance envelope |
Once the main structure is built with these key components, optional features such as overhead, sliding, or bi-fold doors, wall lights, soffit and fascia, interior metal cladding, and porches are added according to your priorities and building use. Regardless of additional features, the components of the main building system stay consistent whether you’re building a 40′ x 60′ shop with living quarters or an 80′ x 200′ cold storage building for your farm.
These components and engineered design are what give post frame its practical edge—the post frame advantage for rural properties is covered in depth in our benefits guide.
“Rural property owners care about how a building feels to use, how it holds up, and the value it adds to daily routines.”
How Does Post Frame Compare to Different Construction Methods?
The main differences between post frame, stick‑built, and steel frame construction are materials, how loads travel to the ground and how well that structure enables wide spans or tall walls. Post frame uses widely spaced posts with engineered trusses to create clear spans over a minimal foundation, while stick‑built uses many closely spaced studs and beams on continuous foundations, and steel frame uses steel columns and rigid frames on engineered piers. Those choices affect interior flexibility, door sizing, site work, and building costs. Matching the system to your use and site conditions protects performance and lifespan.
| Criterion | Post frame | Stick-built | Steel frame |
| Primary structure | Laminated posts with engineered trusses | Stud walls with beams and rafters | Steel columns with rigid frames |
| Foundation | Posts in ground or on concrete piers | Continuous concrete foundations | Engineered piers and anchors |
| Clear span capability | Spans greater than 80' are common | Moderate, interior beams or columns commonly restrict layouts | Strong for very long spans |
| Equipment door compatibility | Excellent for large overhead, sliding, or bi-fold doors | Good for standard overhead door sizes | Excellent, often integrated into frames |
| Interior flexibility | High, partitions are non-structural | Lower, many walls are structural | High, with secondary framing for finishes |
| Site impact | Dirt work to level the building pad only, no excavation required | More continuous excavation and formwork | Heavy coordination and crane access |
What Are Post Frame Buildings Used For?
Post frame buildings have deep roots in the agricultural world, having been used as barns or storage buildings on farms for over a century. Today, however, they’re a popular choice for rural buildings of all types and are commonly used for:
- Agricultural buildings: Farm shops, machine sheds, calving barns, and hay storage
- Acreage buildings: Garages, workshops, and hobby shops
- Equestrian buildings: Riding arenas and horse barns
- Commercial buildings: Offices, warehouses, retail spaces, and workshops
- Post Frame Homes: Barndominiums (shop homes) and bungalows
Remuda Building has designed and built custom post frame buildings for farms, acreages, and rural properties across Alberta, British Columbia, and Saskatchewan since 2014. Explore our diverse range of projects in our portfolio.
FAQs About Post Frame
A post frame building uses vertical structural posts, engineered roof trusses, purlins, and girts to create a wide, open interior with minimal need for interior load-bearing walls. The vertical posts are set securely in the ground or on engineered piers, and each post pair supports the weight of a single truss to form the primary structural system. Horizontal purlins and wall girts tie the frame together and provide fastening surfaces for the cladding. Once metal panels are installed on the roof and walls, the structure encloses efficiently, creating a clear span building that is strong, adaptable, and well-suited to rural and commercial applications.
Post frame construction is the step‑by‑step process of designing, engineering, and assembling a post frame building on your site. It starts with a property visit and drawings sized for local snow and wind, then moves through manufacturing of key building components, sourcing materials, then framing, enclosure, and finishing details. The outcome is a strong, usable space with open interiors.
Post & beam and post frame are different systems with different goals. Post & beam uses heavy timbers and traditional joinery to create a structure and an exposed look. Post frame uses laminated posts, engineered trusses, and metal cladding to build wide, functional interiors quickly and efficiently. The best choice depends on use, style goals, and how you plan to use the space day to day.
