Drainage Plane Behind Siding

Drainage planes are water repellent materials building paper house wrap sheet membranes etc that are located behind the cladding and are designed and constructed to drain water that passes through the cladding.

Drainage plane behind siding.

Behind vinyl siding you definitely need a water resistant barrier wrb. Ideally wood siding should be installed over furring creating a drained and vented air space between the drainage plane and wood siding. With vinyl and aluminum siding the drainage space is more pronounced and furring is not necessary. Old timers will tell you there s no substitute for using tar paper under siding.

Building america recommends a gap of at least 1 16 inch behind lap siding and a drainage space of inch between stucco and plastic house wraps to control liquid phase water penetration. One of the first things that a good builder learns early in their career is the fact that all siding. Above the window is the same deal water can drain out air can flow in. It makes its own drainage gap.

Siding is applied directly over the drainage mat so water can drain out and air can flow in. Since you have tyvek you re all set. Provides a continuous drainage plane behind rainscreen systems and stone and stucco veneers download product overview wallnet wallnet allows moisture to easily flow to the weeps promotes drying to help prevent mold growth and moisture damage and can help extend the life of siding materials by helping them dry from the back. So why use a drainage mat product behind your stucco cultured stone man made stone thin brick hardboard siding or other veneer.

You don t need a separate air gap between the vinyl siding and the tyvek because vinyl siding is installed loosely and doesn t sit tight to the sheathing. After the windows are installed add a mesh drainage mat to the outside the wall. There s probably some truth. With wood siding the drainage space is typically intermittent and depends largely on the profile of the siding.

This space is known scientifically as a drainage plane and it is most effectively created by installing a product commonly referred to in the industry as a drainage mat.