Very few vinyl manufacturers will give you a number for wood subfloor moisture.
Wet subfloor under vinyl.
Moisture weakens glue bonds and causes the edges to lift.
Keep this process going until moisture is gone.
Water damage problems may not be as common with sheet vinyl flooring as some other flooring products but they do happen.
Water damaged vinyl flooring problems are more common over concrete than with vinyl floors installed over wood substrates.
Overflowing toilets bathtubs and sinks in bathrooms can cause water to seep underneath tiles and saturate the subfloor.
Arrange the plywood on the first layer of wood.
Over wood the problem is usually a water leak flooding or the underlayment was too wet when installed.
Vinyl flooring can either be glued to the subfloor or it can float on top of it and either way moisture underneath it causes problems.
Major damage major damage happens when water is allowed to sit on a sub floor for a long period of time.
Lastly if your sub floor is weak but not wet it could be from an old leak.
This will also help the subfloor to dry faster.
Drying subfloor after flood damage can seem like a daunting task.
Sheet vinyl flooring provides a durable surface for high traffic areas in your home.
However equipped with a dehumidifier and some fans it is easier than you think.
When moisture becomes trapped in a subfloor it can cause tiles to bubble and warp.
When wood floorboards get wet they swell.
When left unattended this will cause your subfloor to get mushy and eventually cave in.
When you install your vinyl on a wood subfloor the top plywood should be a minimum of 1 4 thick.
Glue down floors again i personally feel subfloors over 13 moisture content will have to much movement for the underlayment and the flooring to accommodate and the chance of subfloor show through is very high.
If you remove a few floorboards one every 5 10 feet 1 5 3 0 m should be fine will allow your floorboards to expand without buckling or cracking.
To do this measure and cut the plywood to fit your room.
Over time trapped moisture can cause the subfloor to rot compromising the bathroom s structural integrity.
For most subfloors you will need to add an extra layer of wood.
Remove a few boards to let the others expand and dry the subfloor.
The key is to isolate the area to use the dehumidifier followed by circulating air using the fans.
You can also use a wet dry vacuum for this.
How to prepare a subfloor for vinyl flooring.
That s when sub floor surgery becomes your only option.