We just built a new house and are moving in. It has a cement fireplace that has a glass wall to the outside. When we tested the gas unit it put out a lot of heat. I noticed that the glass subcontractor had mounted what looks like neoprene between the glass and concrete. The glass also butts against a glass wall and appears to be joined with a silicone seal.
I’m concerned that these materials will burn. When I called the sub, he just said he built it as designed, and he couldn’t offer any solutions.
Is there a risk, and how might I solve the problem? Are there other materials that would be better?
Replies
Ask the installer for the name and number (if he knows it) of the person who designed it and ask him. The designer must have had reasons for using the materials he called for. Some silicone will withstand high temps--they use it on the space shuttle, for example--but I don't know about the caulk you find in stores. I have more doubts about the neoprene.
"Are there other materials that would be better?"
LOL, you mean like firebrick and masonry?
It sounds like maybe this is a gas log type fireplace, right?
If so, I would want to know the designer's qualifications before having it installed. if the whole kit and KaBoodle is from one source, it should have an underwriters seal which means it has been tested.
If not, too bad, you are a test case, but if so, do not tamper with it trying to make it better. if you mess with their product, the warrantee is voided.
Some silicones are good for over 2000°F. I don't know about the Neoprene, but there are similar appearing gaskets and seals that can withstand that much.
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