We are in the process of building a lightweight concrete house, and the construction company is handling the shell of the house and the ground floor. Part of the upstairs will be a rental apartment, so the construction company will have double plasterboard on the ceiling of the ground floor, and we need to have a firewall, an apartment-separating wall between our rooms and the rental apartment (upstairs). (Perhaps according to the construction recommended by Träguiden. Naturally, we will fill the floor structure with mineral wool and have some kind of step sound insulation. We will have underfloor heating pipes embedded in gypsum strips 13 mm on the chipboard floor (again on the 2nd floor).
We have a problem with the construction. Can we lay a chipboard floor, with 13 mm gypsum on top (the underfloor heating pipes will not cross/go under the upcoming firewall but will instead be routed along one of the lightweight concrete walls ) across the entire floor area, that is, even where the firewall is going to be built?
It is probably easiest to lay the chipboard floor over the entire floor area - but the question is whether this meets fire safety requirements?
One could of course lay another layer of gypsum on the underfloor heating (glued on, so as not to puncture the heating pipes), to enhance fire safety. A plus is that it also dampens sound. Then one could build the apartment-separating wall on top of that.
What do you recommend?
We have a problem with the construction. Can we lay a chipboard floor, with 13 mm gypsum on top (the underfloor heating pipes will not cross/go under the upcoming firewall but will instead be routed along one of the lightweight concrete walls ) across the entire floor area, that is, even where the firewall is going to be built?
It is probably easiest to lay the chipboard floor over the entire floor area - but the question is whether this meets fire safety requirements?
One could of course lay another layer of gypsum on the underfloor heating (glued on, so as not to puncture the heating pipes), to enhance fire safety. A plus is that it also dampens sound. Then one could build the apartment-separating wall on top of that.
What do you recommend?
Who is in charge of the construction? There are high demands on a mezzanine floor between two apartments.
Check these examples:
http://www.isover.se/konstruktionsl...m-c3-205+lägenhetsskiljande+bjälklag+masonite
http://www.rockwool.se/produkter/u/2011.construction/1855/
Check these examples:
http://www.isover.se/konstruktionsl...m-c3-205+lägenhetsskiljande+bjälklag+masonite
http://www.rockwool.se/produkter/u/2011.construction/1855/
What is the benefit of gypsum strips, saving self-leveling compound? On an approved fire wall, the gypsum usually goes down to the suspended ceiling and up to the raw lathing. So no, I can't imagine laying the floor first is approved.
Yes, the plaster strips naturally save self-leveling compound. With two layers of plasterboard (including the layer with underfloor heating - but as I said before, there will not be any underfloor heating loops under the fire wall) on the chipboard floor, it should be okay. It is not a load-bearing fire wall.
Keep in mind that the fire rating should be EI 60...
Is double plasterboard enough then? The front door to the apartment normally suffices with EI 30.
Is double plasterboard enough then? The front door to the apartment normally suffices with EI 30.
Does not have to do with fire, but the underfloor heating loops should be separated so that you can regulate the rental apartment separately. This also solves the fire issue...
Yes, there will be two sensors for the underfloor heating, so the loops for the rental apartment will be separate.