I recently purchased a home and would like to turn the area into a family room with a wet bar with porcelain tile floors. I am having trouble figuring out what the best way to do this.
Questions on work that needs to be done:
Framing walls / internal insulation / redo drywall
1- How should my framing be done? 2" Rigid insulation followed by wood? Pressure treated wood on the bare concrete without insulation? Other suggestions? Is a vapor barrier needed?
2- I only need to frame on the 2 sides of the walls that come into contact with the ground outside. Should I redo the shared wall and the egress along with this?
3- I am not sure whether the building was constructed with external insulation. Would applying internal insulation be harmful if there is external insulation?
4- Do I use mold retardant drywall or regular?
Set up floor for tiling
1- Should I insulate the floor prior to laying down tiles? Is a vapor barrier needed?
2- Will insulating with 1in rigid insulation and laying T&G OSB yield good results?
3- Do I need to leave space around the walls?
4- Can use a foam compatible construction adhesive be used to glue the foam to the floor and glue the OSB to the foam rather than use tapcons or other fastener?
My local home improvement store only sells Faced EPS 1in R3.85 and Unfaced XPS in 1in R5 or 2in R10.
Any other suggestions would be very much appreciated. Apologies for the long post and thank you for your time.
(Facts about basement area:
- Frame house with brick veneer built in 2006
- Climate Zone 4
- Utilized previously as storage / laundry room
- Semi finished
- 800 sq ft & 9 ft height
- 66% below grade
- Cheap carpet over the concrete slab as flooring
- Drywall seems to be directly affixed to the concrete
- Semi detached house, 1 side is a shared wall with neighbor, 1 side is an egress to the backyard partially in contact with the ground outside, 2 sides with with direct contact with the ground
- Did not feel humid. Previous owner claims no water / moisture / mold issues.
- Not sure if there is external insulation or insulation below the slab floor