The sub floor must be free of deflection l 360 considering both live and dead loads.
Concrete overlay on wood subfloor.
We have experience resurfacing concrete with microtoppings and polymer overlays and we are now just starting to do this process over wood either interior floors or upper level patios that do not have enough clearance for concrete.
Prepare by sanding down to clean bare wood.
You can use overlays to create concrete surfaces that run up wood walls.
The nwfa recommends plywood with a minimal thickness of.
Secure loose boards with deck screws and fill open seams with rapid setting polymer modified concrete.
Concrete floor video on how to install concrete over an existing wood subfloor.
The heat transfer to subfloor will be very very little.
We recommend applying param 5500 at a minimum thickness of 3 8 1 2 is preferred to withstand lateral movement and traffic stress.
As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete.
You would then need to find another way to heat the kitchen.
Replace any weak or water damaged wood.
Polymer modified cementitious overlays are well known for their ability to put new faces on old concrete slabs.
Your subfloor would have to be concrete with the new wiring sunk into the.
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.
You can turn off the heat to the floor if you put a subfloor over top.
When installed correctly your concrete over plywood floor will not permit moisture through will not warp or buckle and will come with all the benefits of concrete in an easy to care for floor.
They can be used over pre cast concrete planks wood subfloors in multifamily housing and on slabs on grade in single family homes.
Duraamen s param 5500 goes on thin in a 3 8 to 1 2 thick application.
After installing a vapor retarder if necessary cut your plywood panels into 2 x8 or 4 x4 sections.
Overlays are also used down wood stairs over wood countertops and more often than not across wood floors or decks.
Concrete overlays for wood surfaces create the ultimate makeover.
A subfloor over radiant in floor heat sunk in concrete useless radiant heat.
It lays down ultra flat.