A permanent wood foundation (PWF) can provide a durable and energy-efficient alternative to a traditional concrete foundation. Quick to install, PWFs are a sustainable way to increase your home’s living space while also creating a warm and comfortable basement interior. The knowledgeable team at STAR Building Materials is ready to answer any questions you may have about PWF foundation construction or materials.
- Increases living space
- Quicker to install than a traditional concrete foundation
- Energy efficient
- Variety of plywood and lumber options available
What is a PWF foundation?
A permanent wood foundation (PWF) is a type of foundation most frequently used in residential construction that has below-grade wooden foundation walls made from pressure-treated lumber.
What is required for wood foundation?
In Canada, lumber and plywood used in a PWF must be certified as treated with chromated copper arsenate (CCA). Fastening nails, staples, and framing anchors must be hot-dipped galvanized or stainless steel. Moisture and vapour barriers must be a minimum of 0.15 mm thick.
How long does PWF foundation last?
Under ideal conditions, a PWF can last a century or more.
Will concrete hurt pressure treated wood?
Under ideal conditions, concrete will not hurt pressure-treated wood. However, if concrete becomes damp or water becomes trapped between it and pressure-treated wood, the wood can eventually be susceptible to rotting, thus compromising its structural integrity.