Appendix X-where is it? | Ask Mason Knowles - SPF Consultant | Spray Foam Technical Questions and Answers | SprayFoam Magazine Q&A Forums

Q&A Forums

Author	Comments
Circle-D Posted: Mar 23, 2011 01:27 PM	Appendix X-where is it? Mason, Browsing the ICC website this afternoon I found this: 2603.4.1.6 Attics and crawl spaces. Within an attic or crawl space where entry is made only for service of utilities, foam plastic insulation shall be protected against ignition by 11/2-inch-thick (38 mm) mineral fiber insulation; 1/4-inch-thick (6.4 mm) wood structural panel, particleboard or hardboard; 3/8-inch (9.5 mm) gypsum wallboard, corrosion-resistant steel having a base metal thickness of 0.016 inch (0.4 mm) or other approved material installed in such a manner that the foam plastic insulation is not exposed. The protective covering shall be consistent with the requirements for the type of construction. There is no mention of Appendix X approved foams not needing a covering. Is the ICC website behind or am I mistaken?
jimcoler I have over 10 years of experience specifying and installing open and closed cell spray foam. I've sold my business but I'm still selling for the new owners and consulting on large and custom specific jobs. I've expanded my knowledge into t Posted: Mar 23, 2011 02:11 PM	This is regarding the ICC-ES AC 377 Appendix X which is techincally not code but is being accepted as code approved because it uses the ICC-ES as the front. Stil trying to get an answer from someone who can answer the question on what the real role of the ICC-ES is if it can't write code or make code changes. Because the Appendix X testing method does not meet the code based on "Actual end use configuration". The modified NFPA 286 test is a ful room burn test and not an attic or crawlspace test. It's 8' high with a flat ceiling and one end wide open for air exchange. Now, that isn't very realistic!
mason Posted: Mar 23, 2011 02:23 PM	As Jim reported, Appendix X can be found in the ICC-ES Acceptance Criteria 377. This criteria is used by ICC-ES engineers to provide the different types of sprayfoam by application, sealant, low density, medium density and roofing foam. AC 377 lists the test methods and property values listed for each type of foam. As Jim also reported, AC 377 describes the type of fire tests that can be used by suppliers to qualify their materials when they are using something other than a code prescribed thermal or ignition barrier. ICC-ES is a separate entity from ICC, but ICC officials, staff and most code officials will accept an ICC-ES report to qualify materials or designs for code approval.

Author

Comments

Circle-D

Posted: Mar 23, 2011 01:27 PM

Appendix X-where is it?

Mason,
Browsing the ICC website this afternoon I found this:

2603.4.1.6 Attics and crawl spaces. Within an attic or crawl space where entry is made only for service of utilities, foam plastic insulation shall be protected against ignition by 11/2-inch-thick (38 mm) mineral fiber insulation; 1/4-inch-thick (6.4 mm) wood structural panel, particleboard or hardboard; 3/8-inch (9.5 mm) gypsum wallboard, corrosion-resistant steel having a base metal thickness of 0.016 inch (0.4 mm) or other approved material installed in such a manner that the foam plastic insulation is not exposed. The protective covering shall be consistent with the requirements for the type of construction.

There is no mention of Appendix X approved foams not needing a covering. Is the ICC website behind or am I mistaken?

jimcoler

I have over 10 years of experience specifying and installing open and closed cell spray foam. I've sold my business but I'm still selling for the new owners and consulting on large and custom specific jobs.

I've expanded my knowledge into t

Posted: Mar 23, 2011 02:11 PM

This is regarding the ICC-ES AC 377 Appendix X which is techincally not code but is being accepted as code approved because it uses the ICC-ES as the front. Stil trying to get an answer from someone who can answer the question on what the real role of the ICC-ES is if it can't write code or make code changes. Because the Appendix X testing method does not meet the code based on "Actual end use configuration".
The modified NFPA 286 test is a ful room burn test and not an attic or crawlspace test. It's 8' high with a flat ceiling and one end wide open for air exchange. Now, that isn't very realistic!

mason

Posted: Mar 23, 2011 02:23 PM

As Jim reported, Appendix X can be found in the ICC-ES Acceptance Criteria 377. This criteria is used by ICC-ES engineers to provide the different types of sprayfoam by application, sealant, low density, medium density and roofing foam. AC 377 lists the test methods and property values listed for each type of foam.

As Jim also reported, AC 377 describes the type of fire tests that can be used by suppliers to qualify their materials when they are using something other than a code prescribed thermal or ignition barrier.

ICC-ES is a separate entity from ICC, but ICC officials, staff and most code officials will accept an ICC-ES report to qualify materials or designs for code approval.

You need to login to reply to this topic. Please click here to login.