Originally Posted by MWGS1058
I bring it up because I work with a building company that uses them from time to time on some of our custom homes. When assembling we use burners to install bucks for framing that holds each panel together. Even as the heat gets close to the material it's almost already starting to disappear. Once finished it looks the same as any other home you would see. My concern is, if responding to a fire that involves SIP panel construction how long would a roof last, especially if ventilating. I didn't know if maybe once a house is built like this, it would be a good idea for departments within the response area to be notified of it.
I'm skeptical as well about sip construction but there are a few videos on YouTube with sip under fire conditions and its seems to hold up much better then traditional construction.
Probably just as dangerous as light weight as there is only 1 ridge beam holding up the roof panels and once it goes the whole roof will fail. Although it may last slightly longer then light weight if you use larger dimensional lumber as it will take longer to burn... Just my thoughts.
Here's a link: