Concrete Overlay On Wood Subfloor

Self leveling concrete underlayments are used to rehabilitate old floors that are out of level.

Concrete overlay on wood subfloor.

You can use overlays to create concrete surfaces that run up wood walls. Polymer modified cementitious overlays are well known for their ability to put new faces on old concrete slabs. 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.

Many of these same products can put brand new concrete faces on wood surfaces both old and new. Replace any weak or water damaged wood. After installing a vapor retarder if necessary cut your plywood panels into 2 x8 or 4 x4 sections. Concrete floor video on how to install concrete over an existing wood subfloor.

The sub floor must be free of deflection l 360 considering both live and dead loads. Overlays are also used down wood stairs over wood countertops and more often than not across wood floors or decks. You can turn off the heat to the floor if you put a subfloor over top. 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.

Concrete overlays for wood surfaces create the ultimate makeover. Duraamen s param 5500 goes on thin in a 3 8 to 1 2 thick application. Prepare by sanding down to clean bare wood. 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.

You would then need to find another way to heat the kitchen. The heat transfer to subfloor will be very very little. They can be used over pre cast concrete planks wood subfloors in multifamily housing and on slabs on grade in single family homes. 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.

Secure loose boards with deck screws and fill open seams with rapid setting polymer modified concrete. It lays down ultra flat. As with a floated subfloor nwfa recommends a vapor retarder for glue down subfloors when installing wood flooring over concrete.