what happens if you dont cover foamular ngx f-150 1 in. x 4 ft. x 8 ft. sse r-5 xps rigid foam board insulation in my basement. On the walls. I was thinking about putting insulation, but I’m not planning on framing my basement till next year
foam board insulation
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Not much, except for a laaaarge firehazard. You're supposed to cover it with drywall for that reason.
bogieb
Minister of Fire
I foam boarded my basement a couple of years ago (2017 or 2018). I got part of covered with reflectix, then put up metal studs, then sheet rock for about 1/2 of it (all of what is closest to the pellet stove). The other half was open foam board (it is hazardous - expectantly the fumes put out if there is a fire - that will get you before the fire in my understanding).
Anyway, the foam board is fine after sitting on the wall for a couple of years. I did have to re-tape a couple of seams as one of my cats finds foil tape fascinating
![[Hearth.com] foam board insulation](https://www.hearth.com/talk/attachments/rigid-foam-before-covering-webp.312890/ "[Hearth.com] foam board insulation")
![[Hearth.com] foam board insulation](https://www.hearth.com/talk/attachments/rigid-foam-after-reflectix-webp.312891/ "[Hearth.com] foam board insulation")
Anyway, the foam board is fine after sitting on the wall for a couple of years. I did have to re-tape a couple of seams as one of my cats finds foil tape fascinating
Did you notice a difference when you have your wood burning stove on since you put that up?I foam boarded my basement a couple of years ago (2017 or 2018). I got part of covered with reflectix, then put up metal studs, then sheet rock for about 1/2 of it (all of what is closest to the pellet stove). The other half was open foam board (it is hazardous - expectantly the fumes put out if there is a fire - that will get you before the fire in my understanding).
Anyway, the foam board is fine after sitting on the wall for a couple of years. I did have to re-tape a couple of seams as one of my cats finds foil tape fascinating
View attachment 312890
View attachment 312891
EbS-P
Minister of Fire
If well glued to the wall I would be tempted to to just glue 1/4” sheet rock to the foam. It’s not right but it would be a fast way to get fire protection. It would probably cost more than adding 2x2 studs then 1/2” rock.
It’s what I will do cover the exposed foam board in my rim joists where I have an exposed joist ceiling.
It’s what I will do cover the exposed foam board in my rim joists where I have an exposed joist ceiling.
bogieb
Minister of Fire
I use a pellet stove and my pellet usage went down by a ton or two. The foundation is no longer sucking up the heat and transferring it to the ground around it.
That would probably work. Definitely more expensive and more work to put up the metal studs (I actually used (broken link removed)). And drilling into the concrete block to install the metal furring. But at the same time, it saved me some hassle when I replaced my old boiler and water heater with a direct vent combi-boiler a couple of months ago. The unit is required to be attached to plywood. Since I had the metal furring strips, they were able to attache the plywood easily, the install the combi-boiler.
BTW - make sure you use the correct adhesive for the foam board. Some adhesives will melt it.
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