Permanent Wood Foundations

The permanent wood foundation pwf is an innovative building system that saves builders time and creates com fortable warm living areas that enhance a home s salability.

Permanent wood foundations.

It is now known under a new name. The permanent wood foundation system. Properly designed vertical stacked wood stud walls will support a great deal. Permanent wood foundations should have a wood sump crock that is completely open at the bottom.

A wood foundation isn t strong enough to hold up my two story house a foundation is designed to support the vertical load of the house above it and the horizontal load of the soil pushing against it. When pressure treated wood was developed in the 1960s it became possible for wood to be used in foundation walls without being prohibitively vulnerable to damage from insects and moisture and by the 1970s pwfs gained acceptance. All lumber and plywood components in the wood foundation are. It s a load bearing lumber framed foundation wall sheathed with plywood.

The permanent wood foundation pwf is an innovative building system that saves builders time and creates comfortable living areas that enhance a home s value. Just what exactly is a permanent wood foundation. This will help to prevent it from getting clogged on the sides. A pwf consists of a stud wall and footing substructure constructed of approved preservative treated plywood and lumber which supports an above grade superstructure.

Since 1969 specially treated wood lumber and plywood has been used commercially in the united states for wood foundations. Hence the name permanent wood foundation. The sump basket should also be at least 30 deep. Generally the soil pushing against it is a much bigger concern.

A permanent wood foundation pwf is an engineered construction system that uses load bearing exterior light frame wood walls in a below grade application. If a traditional plastic sump basket is used with a wood foundation the bottom should be perforated to allow water to come in from the bottom. Forest laboratories in madison wisconsin has had wood foundation material in the ground since the 1940s and periodically checks it for any deterioration.