BASC Search | Building America Solution Center

Drain the Rain…On the Plane…the Drainage Plane, BSI–112

Author(s)

Lstiburek Joseph W

Organization(s)

Building Science Corporation,

BSC

Publication Date

November, 2019

Report covering the rainwater performance of building assemblies.

Improving Drainage and Drying Features in Certain Conditions: Rain Screen Design for Absorptive Cladding

Author(s)

National Association of Home Builders

Organization(s)

NAHB

Publication Date

December, 2008

Guide detailing best practices on how to build wall assemblies with absorptive claddings such as brick, stone that drain and dry well.

Bees made a nest in the drainage plane behind a brick veneer wall by entering via unscreened weep holes

Publication Date

Thu, 06/03/2021 - 12:00

Standard Specification for Manufactured Polymeric Drainage and Ventilation Materials Used to Provide a Rainscreen Function, ASTM E2925–19a

Author(s)

ASTM International

Organization(s)

ASTM

Publication Date

August, 2019

Specification describing criteria for manufactured polymeric materials used to provide a rainscreen function, a means for the drainage of liquid moisture and the ventilation of vapor moisture that enters an above-grade exterior wall assembly which was published in the year 2019, and is available for...

Wrong: The homeowner mistakenly filled in the weep holes in this brick wall with spray foam, preventing drainage from behind the wall

A plastic fiber drainage mat rainscreen provides uniform support for the siding and allows moisture to flow horizontally and diagonally in addition to vertically.

Publication Date

Tue, 06/29/2021 - 12:00

A drainage plane is created behind lap siding by installing furring strips on the exterior walls over house wrap which is overlapped and taped at all seams to serve as an air and water barrier.

Publication Date

Wed, 12/06/2023 - 12:00

Tennessee 'Bee Whisperer' Removes 35,000 Honey Bees from Brick Wall

Author(s)

Farber Madeline

Organization(s)

Fox News

Publication Date

October, 2018

A story about bees building a hive in the drainage plane behind the brick veneer siding. The bees entered the wall through unprotected drainage holes.

Nashville's Home Inspector reveals clogged "Weep Holes"

Publication Date

May, 2011

Video showing how the weep holes in a brick façade are sometimes filled by the homeowner or subsequent contractor who mistakenly thought the holes are the result of an installation error during the brick laying work. These holes are important to the drainage and ventilation of the wall, please don’t...

Moisture-, Impact-, Fire-, and Pest-Resistant Exterior Siding

Guide describing how to select the siding materials best suited to withstand hazards the home is likely to face within its lifetime.