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New house will have stained cc radiant (hydronic/PEX tubing) finish floor w/ crawl space. No slab on grade, no Gypcrete. Desire input on substructure and slab specs. Leery of I-joists so thinking wood joist & girder system w/ ply subfloor, vapor barrier (6mm poly?). 2″ slab pumped- 6 sack pea gravel, fiber?, control joints scored 2’x3’pattern (1/2″ deep enough?). Thoughts on slab as structural unit vs. framing providing structure? Would do all framing incl partitions and roof first.
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We have the same kind of floor. Our difference is the slab is 1.5 inches. We did no control joints or fiber. We have 4 cracks in 1100 square feet of floor. We did i joists, 12 inch on center and beefed them up from 9 in. to 12 inches. The cracks are where two or more rooms meet in hall ways. The floor was stained 17 days after pouring.
Jill
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New house will have stained cc radiant (hydronic/PEX tubing) finish floor w/ crawl space. No slab on grade, no Gypcrete. Desire input on substructure and slab specs. Leery of I-joists so thinking wood joist & girder system w/ ply subfloor, vapor barrier (6mm poly?). 2" slab pumped- 6 sack pea gravel, fiber?, control joints scored 2'x3'pattern (1/2" deep enough?). Thoughts on slab as structural unit vs. framing providing structure? Would do all framing incl partitions and roof first.