Hi There -
I am converting my garage into a small in-home hair salon and really need some help in determining the best design for the sub-floor.
Here are the considerations:
-Concrete floor (I put down poly before pouring, so moisture is minimal)
-The floor is sloped towards what used to be the garage doors. (approx. 3" to 4" difference from one end to the other)
-Cold Canadian winters reaching temperatures sometimes colder than -30C)
-Around the perimeter of the floor is a short concrete knee wall that is exposed & not insulated on the exterior.
-The floor is not perfectly level. (there are high and low areas)
-High traffic
-Heavy furniture
Here is what I feel I should be doing:
1. Concrete floor
2. 6mm poly (overlapping 6" and caulked). This poly wraps up the short concrete knee wall and is caulked at the baseplate of the wall.
3. Owens Coring r10 FM used vertically to insulate the outside perimeter knee wall.
4. Pressure treated 2x4 on 16" centers runs side to side (not up & down the slope).
5. Owens Coring r10 FM in between 2x4's and siliconed on either side.
6. Ripped 2x8 and 2x6 run up the slope against the 2x4 's. These ripped boards are glued and toenailed into each of the 2x4's as they cross. These boards can be "shaved" down where they intersect the 2x4 's to help level the floor.
7. Tongue and groove plywood glued and screwed going across the joists.
8. Hardwood flooring stapled on top.
Why are you asking this question?
Initially, I had placed my floor joists entirely on top of the r10 FM without any poly. My electrician stopped by and informed me that this approach was bad he had done this and it had resulted in a spongy floor that had to be ripped apart and rebuilt.
So, when I was tearing apart my floor I found ice on the joists where the floor meets the knee wall. Obviously this is bad and I'm glad I found it, but what do I do? I'm concerned that the 6mm poly won't resolve this issue and I'll have a rotting floor underneath my hardwood.
I apologize for the length of this, but I have tried to explain this clearly so I get this issue effectively resolved.
Thank you.
I am converting my garage into a small in-home hair salon and really need some help in determining the best design for the sub-floor.
Here are the considerations:
-Concrete floor (I put down poly before pouring, so moisture is minimal)
-The floor is sloped towards what used to be the garage doors. (approx. 3" to 4" difference from one end to the other)
-Cold Canadian winters reaching temperatures sometimes colder than -30C)
-Around the perimeter of the floor is a short concrete knee wall that is exposed & not insulated on the exterior.
-The floor is not perfectly level. (there are high and low areas)
-High traffic
-Heavy furniture
Here is what I feel I should be doing:
1. Concrete floor
2. 6mm poly (overlapping 6" and caulked). This poly wraps up the short concrete knee wall and is caulked at the baseplate of the wall.
3. Owens Coring r10 FM used vertically to insulate the outside perimeter knee wall.
4. Pressure treated 2x4 on 16" centers runs side to side (not up & down the slope).
5. Owens Coring r10 FM in between 2x4's and siliconed on either side.
6. Ripped 2x8 and 2x6 run up the slope against the 2x4 's. These ripped boards are glued and toenailed into each of the 2x4's as they cross. These boards can be "shaved" down where they intersect the 2x4 's to help level the floor.
7. Tongue and groove plywood glued and screwed going across the joists.
8. Hardwood flooring stapled on top.
Why are you asking this question?
Initially, I had placed my floor joists entirely on top of the r10 FM without any poly. My electrician stopped by and informed me that this approach was bad he had done this and it had resulted in a spongy floor that had to be ripped apart and rebuilt.
So, when I was tearing apart my floor I found ice on the joists where the floor meets the knee wall. Obviously this is bad and I'm glad I found it, but what do I do? I'm concerned that the 6mm poly won't resolve this issue and I'll have a rotting floor underneath my hardwood.
I apologize for the length of this, but I have tried to explain this clearly so I get this issue effectively resolved.
Thank you.
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