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Drainage Plane Update in Residential Codes
Apr, 2023
New 2021 Code Language
Recent code changes in the IRC and IBC require an enhanced drainage plan or rainscreen in most climate zones.
WPL has the product solutions and a knowledgeable team to help build several code compliant stucco and adhered veneer assembly designs to meet these new challenges.
Contact one of our local specialists to help you build a code compliant wall assembly or discuss different wall design solutions.
Click for an excerpt of the 2021 IRC Code or the 2021 IBC Code.
To meet new requirements, wood sheathing with DuPont™ Tyvek® DrainWrap™ or StuccoWrap® is an economical solution.
Regardless of your exterior wall design, turn to Weatherization Partners for all your rainscreens and drainage plane solutions.
From DuPont Building Solutions, to Keene Building Products, to MortarNet, we have solutions to meet all your building challenges.
DuPont™ Tyvek® StuccoWrap®
Tyvek® StuccoWrap® can be used as the primary weather barrier for traditional stucco and direct-applied stone masonry applications (including brick) requiring two-layer weather resistive barrier systems or an intervening layer over the primary weather resistive barrier. It is also acceptable for use behind traditional lapped cedar and cement siding applications up to four stories. Tyvek® StuccoWrap®
boasts a long track record of proven performance and meets all major building codes by ICC-ES evaluation reports.
DuPont Tyvek StuccoWrap does not absorb water, helps maintain the moisture level needed for better curing and doesn’t expand and contract, resulting in a stronger stucco. Tyvek® StuccoWrap® provides superior water drainage.
Learn more data sheet
Keene™ DriWall Rainscreen
Driwall™ Rainscreen is a drainage mat for exterior wall systems. The entangled net
product eliminates incidental moisture problems in most exterior veneer applications, including stucco, manufactured stone, and plank siding.
With the increase in building “tightness” for thermal protection, moisture problems are on the rise, causing a greater need for hydrostatic pressure release and a ventilation method.
The full-wall Driwall™ Rainscreen product rolls over the water-resistive barrier to separate it from the exterior veneer. The airspace that Driwall™ Rainscreen creates increases airflow through the wall cavity, allowing the wall to breathe and stay dry.
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