Helpful? 0

EPS and butyl rubber

I had a question regarding a roof SIP and GRACE Ultra Peel & Stick - Butyl Based Membrane. The SIP has an EPS core and my concern is when a fastener punctures the peel & stick membrane, the rubberized butyl gets into the EPS core. It is a rubberized asphalt type of product. Since petroleum and EPS don't mix, will this cause a problem?

I read that petroleum based products can eat away at EPS and literally melt it. Will this be a problem with GRACE peel & stick on the SIP roof with an EPS core?

Asked by Peter L
Posted Thu, 04/03/2014 - 00:15
Edited Thu, 04/03/2014 - 06:44


1 Answer

Select your preferred way to display the comments and click "Save settings" to activate your changes.
Helpful? 0

Butyl-based peel-and-stick products are entirely different from rubberized-asphalt peel-and-stick projects. They use a butyl adhesive and, as far as I know, do not contain asphalt.

If you have any further questions on compatibility, you should direct your questions to the technical help hotline at Grace: 800-444-6459.

Answered by Martin Holladay, GBA Advisor
Posted Thu, 04/03/2014 - 06:43

Other Questions in Green products and materials

In Mechanicals | Asked by Chris Marriner | Aug 18, 14
In Energy efficiency and durability | Asked by Anthony Hughes | Aug 20, 14
In Green building techniques | Asked by Stephen Youngquist | Aug 21, 14
In General questions | Asked by flitch plate | Aug 19, 14
In Green products and materials | Asked by Eric Burhop | Aug 20, 14
Register for a free account and join the conversation

Get a free account and join the conversation!
Become a GBA PRO!