Jump to content

Foam board in cold air return?


Bryan
 Share

Recommended Posts

This is a cold air return with foam insulation board used to block electrical wires in the stud cavity of a 3 year old home. Logic tells me this is not correct and the only code reference I can find is: M1601.2.1 Duct insulation materials.

Duct insulation materials shall conform to the following requirements:

1. Duct coverings and linings shall have a flame-spread index not greater than 25, and a smoke-developed index not greater than 50 when tested in accordance with ASTM E 84. Specimens tested in accordance with ASTM E 84 shall be representative of the final composite material.

Click to Enlarge
tn_201064144941_z%20088.jpg

21.38 KB

Does this apply or is there a better code reference?

Bryan

Link to comment
Share on other sites

  • 3 months later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...