Quote Originally Posted by VinnieL View Post
Wow, I cringe thinking about a fire and firefighting using water on that stuff.
I used LVL and TJI for all floor and roof framing as well as headers over large windows my home back in the late 80's, Moved in Christmas of 1990.
TJI= engineered I-beams with LVL top and bottom chords with plywood web, like this, https://parr.com/PDFs/TJ-4000_ijoist_guide.pdf .Got mine before they switched to OSB for the web.

I have had remnants of those materials sitting outside, unprotected, for 25 years in Ohio weather. The wood has obviously been greatly degraded over the years, but there is no sign of delamination due to glue line failure.

The water from a fire is not a problem with LVL.

I have talked with some firefighters who do say they do not like TJI for joists as fire weakens them more quickly that standard wood joists and rafters.