Hello,
I am renovating a bathroom and need to install underfloor heating and tile flooring.
The thing is, the bathroom needs to be built on a wooden joist structure, and all the approved (according to BKR or GVK) constructions I have seen consist of a 22 mm flooring board with glued moisture-resistant drywall on a 60 cm center-to-center joist structure + self-leveling compound, but without underfloor heating. However, I have the option to tighten and stiffen the joist structure to perhaps 20 cm center-to-center instead, so it should be possible to use thinner materials than flooring drywall since I don't want the floor height to be too high.
I was planning on a joist structure with 20 cm center-to-center with sparse paneling (22x120) on it and underfloor heating pipes, then 13 mm screwed flooring drywall, fully glued (Ardex S48) humidboard, self-leveling compound, moisture barrier, and finally tiles.
But of course, one doesn't want to build something that isn't approved by insurance companies, etc.
/Jonas
I am renovating a bathroom and need to install underfloor heating and tile flooring.
The thing is, the bathroom needs to be built on a wooden joist structure, and all the approved (according to BKR or GVK) constructions I have seen consist of a 22 mm flooring board with glued moisture-resistant drywall on a 60 cm center-to-center joist structure + self-leveling compound, but without underfloor heating. However, I have the option to tighten and stiffen the joist structure to perhaps 20 cm center-to-center instead, so it should be possible to use thinner materials than flooring drywall since I don't want the floor height to be too high.
I was planning on a joist structure with 20 cm center-to-center with sparse paneling (22x120) on it and underfloor heating pipes, then 13 mm screwed flooring drywall, fully glued (Ardex S48) humidboard, self-leveling compound, moisture barrier, and finally tiles.
But of course, one doesn't want to build something that isn't approved by insurance companies, etc.
/Jonas
Why not skip the sparse panel for floor particle board and the gypsum for leveling compound? The rules say floor particle board + leveling compound or floor gypsum, not both at the same time? You save an additional 13 mm and can follow all standards without having the floor joists closer than c/c 600.
Read what Jon_h writes in his pinned thread in the bathroom section.
http://www.byggahus.se/forum/429859-post2.html
http://www.byggahus.se/forum/429859-post2.html