Hi
Building a bathroom, fully tiled.
I need your advice on the durability of the underlying walls.
Today there is 11mm Masonite on cc60 frame. (70s holiday home)
My plan is to use Fermacell for increased strength vs regular plasterboard.
Will this hold?
Will it also hold for heavier mountings such as a vanity unit?
Building a bathroom, fully tiled.
I need your advice on the durability of the underlying walls.
Today there is 11mm Masonite on cc60 frame. (70s holiday home)
My plan is to use Fermacell for increased strength vs regular plasterboard.
Will this hold?
Will it also hold for heavier mountings such as a vanity unit?
Do you have a link to that? Is it new?Jonatan79 said:
Last time I checked, BKR didn't have anything to say about the underlying board... You were allowed to have single plasterboard even
Fermacell is a good board, holds more than plasterboard, but you should have noggins where you want to attach things or put 15mm plywood, with that you can mount whatever you want wherever you want without noggins.
Unsure what kind of document it is. As far as I know, the "development" of the vptrumsväggen with the plywood was a project initiated by a number of insurance companies. It was supposed to be seen as an example of how to achieve the more abstract requirements found in the regulations. It is possible that it has been elevated to a rule by now, but I don't think so.
But as for the original question in the thread, I don't have a good answer. Other than it's not sufficient if you're going to install a sink or shower wall. It barely holds for a towel rack or toilet paper holder.
Insurance companies usually require that you follow industry regulations, so BBV in this case, and they don't require the wet room wall even though it's a really darn good universal solution that solves some problems more automatically than more budget solutions.
However, I think it sounds rather weak for a bathroom, and I would want to go in with more studs and plywood. I have an experienced carpenter/tiler at home, and they used max 45cc in the wall and max 30cc in the floor, and they took the reinforcement job very seriously.
As I interpret fermacell's own documentation, it should be ok with a single board.
"
4.8.13 Use of fermacell
Fiber gypsum in wet rooms
n 12.5 mm fermacell Fiber gypsum c/c 600 mm
is approved and P-marked by SP-certification to be used in one layer in wet rooms. To meet the requirement for P-marking SC 0226-09 in wet rooms, all horizontal joints must have noggings."
page 40 in this description https://www.byggfaktadocu.se/monter...32/fil-files/monteringsanvisningfibergips.PDF
"
4.8.13 Use of fermacell
Fiber gypsum in wet rooms
n 12.5 mm fermacell Fiber gypsum c/c 600 mm
is approved and P-marked by SP-certification to be used in one layer in wet rooms. To meet the requirement for P-marking SC 0226-09 in wet rooms, all horizontal joints must have noggings."
page 40 in this description https://www.byggfaktadocu.se/monter...32/fil-files/monteringsanvisningfibergips.PDF
thanks puff of the original question.H hempularen said:
thanksRickard. said:
The new wall will have cc30 with noggings.
The old walls, as mentioned, have masonite with cc60+ nogging.
On these walls, it sounds like I need to reinforce, either with plywood or open the wall and re-stud.
Considering that bathrooms were built with simple drywall and additional studs where needed near sinks, etc., and they are still built this way (though there are disclaimers regarding "säker vatten" and other recommendations), it works, but there's a reason why the wet room wall was developed.
The question is whether fermacell single board is suitable as a base for tiles if the studs are at cc60. Regular gypsum is not rigid enough. A wet room wall is not always tiled.