2019 Idaho Real Estate Blog

Flashing windows "Whats the deal?" Main The Durable Green Home
With all the construction going on in the Treasure valley those of you who work with us in new construction or existing home retrofits know that we are big proponents of Weather Resistant Barriers (WRB) and proper window flashing techniques. So what is the big fuss, you might ask I see flashing on the homes that are being built, and besides it does not rain much in Idaho." Unfortunately water intrusion is the number three reason for insurance claims in the Nation, and a major contributor to building failure, especially in Dry climates.

With all the construction going on in the Treasure valley those of you who work with us in new construction or existing home retrofits know that we are big proponents of Weather Resistant Barriers (WRB) and proper window flashing techniques.  So what is the big fuss, you might ask I see flashing on the homes that are being built, and besides it does not rain much in Idaho ." Unfortunately water intrusion is the number three reason for insurance claims in the Nation, and a major contributor to building failure, especially in Dry climates.

So how do we eliminate the liability of water intrusion around windows? Follow the window manufacturer installation recommendations are a good place to start. You will find that all window manufacturers instruction say windows should be flashed into a drainage plane or in better terms a WRB. A good source for details on proper window flashing is the water management guide available on http://www.eeba.org/ the author is Joseph Lstiburek who is a leading authority on building performance and moisture issues. Another principle to remember is ALL CLADDINGS LEAK, I SAY AGAIN, ALL CLADDINGS LEAK. So in order to eliminate the liability a person needs to establish a drainage plane behind the cladding that the opening in the shell are flashed into. The basic principles are Drain the building, Drain the assembly, Drain the component, Drain the material. When I look at a wall I think if I poured water on the wall, where would it go. OSB or plywood is NOT a drainage plane. Where are the windows flashed?

Tad Duby
407-5414

Onpoint Signature Logo copy.gif

 
Posted by Tad Duby at 1/26/2007 11:19:00 PM
Comments (0)
No comments yet, login to post a comment.
Add Comment
Provide comments on this blog entry. If you have an account with this site please sign in.
*Title *Email Web Address *Comments

 

Michelle Penick, Build Idaho Client Real Estate Services

Michelle Penick

Client Care Team
208.629.0217 | [email protected]

Contact Agent
Search
★★★★★ 5 stars - "Our experience with Full Sail/ Build Idaho was great from start to finish! "