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I need to get started on a subfloor in our 'ground level' guest bedroom. Its a standard (for CA) 4" thick concrete slab. This floor is about 1' lower than the exterior ground level and we have extensive exterior drainage in place. The floor shows no water issues at all.
I am going to use the Delta FL product on the floor under my subfloor. According to the Delta FL install manual you can lay 3/4" min T&G plywood on top of it and float it completely without any attachments thru to the concrete.
I need to raise the level of the bedroom subfloor up to match the existing levels of the attached bathroom and landing. If I use 2by4s lain on their side (the 1.5" dimension vertical) as sleepers and 1 1/8" T&G plywood flooring the height would be perfect. What I don't want to have to do is attach the sleepers to the concrete with about a million tapcon screws. The Delta FL folks say that to make a connection thru to the concrete you need to pre-drill each hole then caulk the hole then insert the tapcon....thats a gonna take a while.
What I wanna do is lay down the 2by4s and connect them all toghether some how (pocket screws I have the technology). then glue and screw the 1 1/8" flooring to them and float the floor that way? Do any of you think that this would work?
Before you suggest this I have called the Delta FL folk's tech line several times but keep getting voicemail and no callbacks.
Crazy Home Owner
Restoring our second Victorian home this time in Alamdea CA. Check out the blog http://www.chezneumansky.blogspot.com/
Crazy Homeowner-Victorian Restorer