The Permanent Wood Foundation System is an engineered system that is thoroughly proven and approved for foundation and basement construction based on years of testing and field evaluation. Originally known to builders as the All Weather Wood Foundation because it can be installed in wet or even freezing weather, the Permanent Wood Foundation is a significant advancement in foundation construction. It is accepted by building codes and Federal Agencies and by lending, home warranty and fire insurance institutions. CCA pressure treatment permanently protects the wood from decay and termites. Footings are crushed stone and are engineered to provide both structural support and groundwater drainage.
Carpenters do all the work since no concrete is required.
Treatment is per code requirements for penetration, retention and drying after treatment. The required retention of preservative is .60 lbs. CCA per cubic foot of wood, which is 50 percent higher than codes require for many other ground contact applications. Fasteners are stainless steel. Permanent Wood Foundations are fabricated andinstalled by carpenters.