Any one use the foil faced osb from menards on their walls and ceiling of there detached garage? I know it is meant for exterior use, but, it s suppose to reflect heat away from it so it should help heat stay in? Garage is insulated top to bottom just looking to cover walls and keep as much heat in as possible with the electric qmark muh 102 heater.
Foil faced osb
- Thread starter Mjwebber
- Start date
72Anthony
Well-known member
One of the brand names is Tech Shield. It is used a lot in new construction in the Houston area and other southern states where air conditioning load dominates heating load. It is primarly used in attics because the foil side needs to be facing an air gap for the radiant barrier to work.
I dont know how effective it will be as an insulator, keeping the heat in. It would require the foil to face your interior shop space.
I would research further, I think you will find other options are more effective.
I dont know how effective it will be as an insulator, keeping the heat in. It would require the foil to face your interior shop space.
I would research further, I think you will find other options are more effective.
gasgas17
Well-known member
If the foil side is installed facing the attic space it would only make sense that it would face the insulation in a wall application. Reflection of heat from the sun on the roof (outside source) or reflection of heat in a room (inside source).
wnstwolf
Well-known member
FullRaceMerc
Well-known member
We have started using it for roof sheathing on jobsites. Our climate is hot so most of our effort is spent in repelling heat. It makes a noticeable difference in attic temps. I haven't measured with a thermometer to compare, but worked in a split attic where an addition had it & the existing house didn't. My sweat meter indicated that the foil section was much cooler. 
When we re-roofed our shop a few years ago we used it. It is much cooler in the summer & I don't think we fire up the heaters nearly as often in the winter. It seems like it would have to be effective to some degree for walls (no pun intended), but I have no real knowledge as to how much. My guess is that it would probably help, but it would be pretty disappointing to line walls with to find out that it is really only effective at the heat levels generated by a sun soaked roof.
The glare off it can be pretty overwhelming. Like a 4x8 mirror. We have to be careful to not blind anyone while loading it on a sunny day. And you can sure feel the reflected heat off of it if you turn it towards the sun. As stated above the foil normally faces the air space, so on a roof it faces down. For walls I would think it would face the studs. If it faced the room uncovered the glare could be an issue. I don't know how it is in regards to its fire rating.
When we re-roofed our shop a few years ago we used it. It is much cooler in the summer & I don't think we fire up the heaters nearly as often in the winter. It seems like it would have to be effective to some degree for walls (no pun intended), but I have no real knowledge as to how much. My guess is that it would probably help, but it would be pretty disappointing to line walls with to find out that it is really only effective at the heat levels generated by a sun soaked roof.
The glare off it can be pretty overwhelming. Like a 4x8 mirror. We have to be careful to not blind anyone while loading it on a sunny day. And you can sure feel the reflected heat off of it if you turn it towards the sun. As stated above the foil normally faces the air space, so on a roof it faces down. For walls I would think it would face the studs. If it faced the room uncovered the glare could be an issue. I don't know how it is in regards to its fire rating.
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diypolebarns
Member
FullRaceMerc is right about how much heat and light is reflected back by the foil. Liken in to the foil shades people place in their windshields to protect their interiors from the summer sun. The foil reflects radiant heat, whether it is from the sun or an interior heat source. We utilize foil-lined insulation on most of our barn roofs to keep the buildings cooler as well as keep condensation from forming on the metal barn roofs. In this application it is to reflect the sun's radiant energy, but it could also be turned with the foil to the inside to reflect a heater's radiant energy. It works great along with regular insulation. Remember that the foil does not carry a true R-value, but does an amazing job retaining/reflecting heat.
blueovalforever
Member
if installed as a ceiling, will it hold some blow in insulation if wanted to be added at a later time? Im also concidering using the same stuff since I have 13 ft ceiling.
I used it on the outside of my garage. When I hung some of it, it was hot and a clear sky. That **** about cooked me reflecting the Sun back on me.
Apparently PB is having issues right now.
Apparently PB is having issues right now.
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Modern Jess
Well-known member
It's a little more straightforward than that. Used as roof decking, the foil face is installed toward the attic space because if it were the other way around, the foil face would be in contact with the shingles (or tarpaper) and would act as a conductor instead of a radiator. The important point to remember is that the foil face always needs to face an air gap, or it is effectively useless.