tempered glass or pyrex?

I have a double sided fireplace. One side is open and the other is glass doors. The glass doors are closed but air still gets through and it contributes to my fireplace spilling smoke into the room. We are going to replace the glass doors with what amounts to a glass window so that side is completely sealed. Am I ok to go with tempered glass or should I go with pyrex or something else? I used my thermapen to measure the temp of the glass doors tonight with the fire going and it was about 275. I know that's within the acceptable range for tempered glass but I didn't know if I should go with something more heat resistant to be safe.

I have a fireplace like that too, never use it since its useless as is, Id go with neoceram or something like that. Been thinking about getting sealed doors, are you just attaching a pane of glass?

I would not use pyrex. They have changed the material they make it out of and there have been many cases of it exploding. I don't want to think of what would happen should this happen in a stove and the fire could no longer be controlled.

Matt

I think he wants to use it for fireplace doors and not a stove, not sure exactly what he has in mind since he hasnt responded yet.

Do not use tempered glass. We had/have a double sided fire place and twice the tempered glass exploded. We then went to aromatherapy( sp) and it held up. Now we used a Jotul 550 and the Pyro side looks, still like a fire place. Much better as the fireplace lowered the house temp by 10', now it keeps us warm all winter!!

Aromatherapy? Say what?

No stove. This is a regular old fireplace. Heating the house doesn't matter to me. I live in Florida. The fire is more for ambience and a little heat coming out if you sit in front of it. One side of the fireplace is totally open. The other has glass doors. I'm having trouble with the fireplace smoking. I had a pro come out and he explained that the fireplace is drawing in too much air and my flue is too small to handle it. He installed a smoke guard on the front of the open side and that has fixed 75% of the problem. However smoke still spills into the house. I've been told by multiple people that double sided fireplaces are notorious for this. So I'd like to seal off the back side, however I still want to be able to see the fire from both sides. So if I replace the glass doors with a solid piece of glass, have it framed, mounted and then caulked, that side will be airtight. So the question is what type of glass to use for this purpose. Someone suggested neoceram which appears to be a ceramic? That looks like it could work, but the next question would be, where the heck do I get a custom made piece of neoceram?

There is a member here who has just what you want; he either owns or operates a stove glass shop and can cut any size you would want out of neoceram or pyroceram. This is the link. Hope this helps.

http://www.woodstove-fireplaceglass.com/

If you go through with it can you put some pics up when your done? Im going to be doing something similar and would be interested to see how yours looks. Thanks

Sure I'll try to remember. I think the challenging part will be getting a frame built. I can order the neoceram but then I need something to hold it in place. I assume the frame will need to be some sort of metal?