The recommended thickness of the plywood subfloor is governed by the spacing of the joists.
Marine ply for bathroom floor.
This will prevent the ply from sucking moisture out of the tile adhensive thus the tiles wont come unstuck.
Regular plywood is much less expensive than marine plywood.
There are many projects that may require plywood that s water resistant.
Advantages of regular plywood over marine plywood.
A sheet can cost 10 to 50 as opposed to the cost of marine plywood which ranges from 70 to over 200 a sheet.
There s an idea that plywood can t be used around water but of course plywood can even be used to make boats.
Using the right type plywood ensures a long lasting floor.
12mm wbp would be the minimum thickness for over boarding when laying ceramic tiles.
External ply or wbp uses similar waterproof adhesive for the timber veneers so is effectively the same.
That usually means the underlayment and the subfloor also get wet.
You don t even need to use marine grade for high moisture areas.
The thickness of the ply you need is about floor construction loading the type of use the room gets.
Roseburg s ab marine panel is a marine grade plywood that is produced entirely of group 1 species of veneer.
When re tiling the ply it will need a coat of watered down pva glue to seal it.
However few require waterproof marine grade plywood.
I m a tiler no vinyl flooring expert but i would have thought that 6mm would be adequate for vinyl flooring tiles which after all is.
Marine grade plywood is a waterproof product intended for exterior uses that will typically do more than come into contact with water but will in all likelihood be completely submerged.
You just need to specify to the supplier that the plywood be appropriate for high moisture areas and then ensure it s finished with the right product.
Tile floors are especially heavy with layers of cement board mortar tile or stone and grout.
The floor must also handle the weight of the tub shower tiles and other fixtures.
Kitchen hall heavy use 25mm.
Marine plywood is a particular variety of plywood that s been treated to withstand moisture as the name implies it s often used on boats and other items that are in frequent contact with water.
Bath shower room light use 18 22mm but sometimes 25mm is necessary.
Douglas fir ab marine plywood has been sanded and can either be painted or stained to match your home decor.
The marine ply should be usable if it hasnt got water damage and warped.
The bathroom floor gets wet.
Some experts suggest that 15 32 inch plywood should be standard if the underlying floor joists are spaced 16 inches apart or less but slightly thicker 3 4 inch plywood should be used for joists spaced further apart.
Ply thickness has nothing to do with it being a wet room but in wet room s ply floors must be tanked anyway or it won t that long.
You don t need marine ply with expensive decorative veneers.
