How can I make plywood waterproof?

Question

Hi there. What steps are needed to waterproof plywood prior to the installation of tiles? Thanks.

Chriatian · Accepted Answer

Hi, if you are using plywood I would seal with an SBR primer. However, if it was me I would use a cement board as that is waterproof. I hope that helps. Thanks, CJ Kings Tiling.

Jagjit · Answer

Hi you need to tank the plywood, use the tanking to protect the plywood and after 24 hours you can tile on top

Paul · Answer

Maybe apply PVA uni bond or maybe buy backer boards that are already treated

Nigel · Answer

you could use PVA glue with a wide paintbrush and apply a couple of coats which also helps the adhesive stick more firmly most tilers use this method.

Damian · Answer

Prepare the Plywood Before the liquid latex, paint, or PVA is applied, the plywood needs to be readied. ...
Apply the Sealer If you’re using a brushed-on sealing method, paint it on with a brush or roller, just as you would normally. ...
Let it Dry, and Keep an Eye

Peter · Answer

Buy and install WBP plywood or you're going to have issues. Better still use a cement board.

Harry · Answer

Use marine plywood or get a tanking kit and simply brush on plywood

Alan · Answer

Mix PVA 50% with water and paint with the solution, which should solve your problem

Jason · Answer

Hi, I use an acrylic primer. To waterproof the plyboard and get a good bond

Paul · Answer

Yes, you can make plywood waterproof you can find water vase resin with modified polymers that you can spread on the plywood and becomes waterproof. WATERPROOF means that you need drainage not to stay 24/7 underwater If you have drainage it's ok like bathroom walls or floor if it's a pool of something where the water needs to stay all the time it's not ok you can use a product from MAPEY or SIKA the need to be A+B that means a better waterproof  example (mapelastic)

How can I make plywood waterproof?

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