Timber Frame vs Post and Beam

It’s all in the connection.

Timber Frame and Post & Beam are both terms you’ve heard but might be wondering what the difference is between the two? Both utilize the beauty of heavy timbers and are able to provide a strong weight-bearing frame with a homely aesthetic, though there are differences between the construction process and the visual appearance that are important to take into account.

The main difference between true timber frame and post and beam is the way in which the timbers are connected to each other. The timber frame method uses interlocking lengths of timber to construct a weight-bearing frame through the use of mortise and tenon joints. Essentially, this means each member connects together like pieces of a finely-crafted jigsaw puzzle, with wooden pegs inserted afterward to fuse them tightly together. Such joinery requires very precise fitting and can only be cut by trained artisans or Computer Numeric Control (CNC) machines. Without the use of any nails, bolts, or steel, this method of construction dates back to ancient civilizations. Using only timber means there will be less wear and tear than using metal with timbers, resulting in less maintenance over time.

Meanwhile, with post & beam construction, timbers are typically butted together with half-lap joinery and connected by metal fasteners or plates, often imitating the appearance of a timber frame.

Skill & Craftsmanship

When it comes to price, a timber frame can cost more due to the complex joinery cuts and the need for skilled labor to erect the timber frame. However, this varies from build to build. For instance, if a post & beam home requires many connections, the cost of specialized steel hardware may increase beyond that of the made-to-measure wooden slots used in timber frame construction.

Another factor to take into account is the way in which the frame is assembled. Timber frame bents are first assembled on the ground then raised and set in place, section by section. With post and beam construction, each component is individually built on top of the next, member by member.

Authenticity

The final look of the home is another element to consider, as prominent pegs and natural tight-fitting joinery in timber frame builds can lend a property a stately, sturdy authenticity that post & beam homes may not be able to achieve. Both exposed pegs and metal plates are beautiful features of each respective method, but there is something to admire about the craftsmanship of a true timber frame structure that can stand the test of time.