Utilizing control joints along long seams or large areas is important.
Concrete overlay over wood subfloor.
Why would you want to do this.
Secure loose boards with deck screws and fill open seams with rapid setting polymer modified concrete.
We recommend applying param 5500 at a minimum thickness of 3 8 1 2 is preferred to withstand lateral movement and traffic stress.
A subfloor over radiant in floor heat sunk in concrete useless radiant heat.
You can use overlays to create concrete surfaces that run up wood walls.
The sub floor must be free of deflection l 360 considering both live and dead loads.
Self leveling concreteunderlayments are used to rehabilitate old floors that are out of level.
Replace any weak or water damaged wood.
You can turn off the heat to the floor if you put a subfloor over top.
Your subfloor would have to be concrete with the new wiring sunk into the.
They can be used over pre cast concrete planks wood subfloors in multifamily housing and on slabs on grade in single family homes.
Overlays over wood surfaces.
You would then need to find another way to heat the kitchen.
The heat transfer to subfloor will be very very little.
Metal lath stapled over plywood substrate.
Concrete floor video on how to install concrete over an existing wood subfloor.
The installation of calcium aluminate cement based self leveling concrete param 5500 along with expanded metal lath for reinforcement is a successful fast track method to convert a plywood subfloor into a beautiful concrete floor.
The overlay may be as thin as 3 8 of an inch so the surface prep is keenly important.
The substructure must be well construction to successfully support a cementitious overlay.
It s best to place the underlayment over 3 4 inch thick plywood fastened with screws at 12 to 16 inch intervals to help decrease deflection and add stability.
I would not be surprised to see that the crack had followed a seam in the plywood or decking in the sub floor.
Find out how to this is done properly.
Prepare by sanding down to clean bare wood.