Messages and Online Forum Q&A

Re: Styrofoam-clad foundation

From: info@builderswebsource.com
Category: Alternative Building Techniques
Remote Name: 63.198.181.43
Date: 23 May 2001
Time: 08:20 AM

Comments

You're referring to ICFs, or insulated concrete forms. The EPS itself (Expanded Polystyrene) foam is not a source of termite nutrition. However, there have been reports that termites can tunnel their way through the EPS to sources of wood in the structure. As a result, some municipalities prohibit the use of EPS underground. You must check with your local building department to verify whether this is permitted.

However, in cases where EPS is used underground, it's common practice to provide a few inches of "break" in the foam above grade between the basement and the first floor. This gap allows visual inspection of the exterior of the structure for possible termite tunnels. For more information on ICFs and termites, see our technote which is available online for a nominal fee. Go to: http://www.builderswebsource.com/techbriefs/about_icfs.htm

Builders Websource

Article Tools

Builders Websource® is a corporate member of ASTM International—a non-profit engineering body dedicated in part to the standardization of building materials specifications, products, systems, and test methods for improved health, safety, and reliability of residential and commercial structures.

Copyright © 1999 - 2008 Builders Websource®, an InBuild™ company. All rights reserved.