Floor Joist And Plywood Floor Or Concrete Slab

Slabs suspended or on grade put out more heat 50 btus sq.

Floor joist and plywood floor or concrete slab. Hydronic radiant floor heating hrf is usually associated with concrete slabs. Concrete slabs are also the most efficient for hydronic radiant heating systems as the thermal mass of the slab helps hold heat. Retrofits for plumbing or mechanical changes later can be difficult and costly. Fir or syp 16 or 24 o c.

Ft than systems within floor joists 35 btus sq. Can i just lay my floor joist directly on the concrete. Concrete slab floors do require that all subgrade utility rough ins be completed before the slab is poured and be accurately located. These will be the end sill plates that support the ends of the floor joists.

I have read in some places that you need a vapour barrier to put over the concrete before installing the plywood and in other places to just glue the plywood to the concrete floor. However well insulated residential structures need only 20 25 btus sq. Concrete expands and contracts and that type of movement can also crack the tiles and the grout. The studs keep the wood flooring planks further away from the slab and they minimize the amount of.

A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Have done quite a few floor systems over slab never had a complaint from ho inspector or mechanicals. Long circuits of 1 2 inch to 3 4 inch polyethylene polybutylene or rubber tubing are arranged over a layer of welded wire mesh and then buried in concrete see radiant slab techniques 8 92. When installing a ceramic tile floor on a concrete subfloor you don t have to worry about flexing as long as the concrete slab is at least 1 1 8 inch thick which most slabs are.

However you re not out of the woods. I have been researching a lot and would like to install a plywood floor over concrete in two bedrooms in our basement. Install it flat on the slab surface with the outside edge aligned against the side wall or the edge of the floor line. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.

I have seen many blogs and read a lot and know it can be done but need a bit of help. To maintain comfortable temperatures at zero degrees f so either arrangement will provide sufficient heat. The reason is that slab embedded systems are relatively simple to install. For your floor joists 5 1 2 3 4 plywood subfloor brings you up to 9 3 4 floor covering tile carpet brings you to just over 10.

Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s.