Im gonna be cutting up some 3/4 OSB to make strips for "on top" radiant 1/2 pex heat.
This will be on top of a 3/4 t&g plywood which sits on 11-7/8 tgi joist (which i did not glue
Im thinking to glue and screw the strips so no squeak develops over time, a friend advised against because by gluing will leave no room for expansion and contraction and over time with the pex heat in the floor it will start to buckle.
Your opinions ?
Heres what i planed on doing.
Cutting up some 3/4 OSB (already have) in 7" strips at around a 15 deg angle the length of the cut.
Using 1/2 pex (3/4 O.D.) will space the strips 3/4 from one another and create a dove tail so the pex will "snap" into place (trying to mimmik what ive seen in the past with "over the top" panels) and glue and screw down the strips.
With a jig saw, create the radius for looping back.
Then placing oak hardwood on top.
So the main question is, will screwing & gluing these strips and the use of heated pex between them cause problems with the floor down the line ?
Thanks for any opinions.