Vinyl Bubbling, DPM on concrete floor

[deanalewis]

Hi Folks,

I recently replaced my bathroom floor and I have found it was bubbling, We kept it like that for 6 months then done away with it and decided to get a new one (Perhaps a dodgy installer). We went with another well reputable company paid for a full stick down and again its starting to bubble.

The original floor was Vinyl ontop of a tanked membrane as the room was originally a wet room. The floor itself is solid concrete slab on the ground floor.

I guess the concrete is just always going to have moisture which ends up underneath the vinyl causing any replacements to bubble.

So my question is would putting a waterproof epoxy ontop of the concrete cure this problem. So that the moisture and air of the slab cannot penetrate through the vinyl and adhesive?

 

[dazlight]

When the old vinyl was uplifted the floor should of been left a week to breathe.
Can you post any pics?
If moisture in the floor still you will need a epoxy DPM. That has to go on a smooth surface with no adhesive on the subfloor. Then another layer of smoothing compound screed

 

[crazydaze]

Or you could lay on F-Ball Isolator, that would solve the issue quickly.