Hello.
Wooden house with exhaust air heat pump and the new energy requirements. The wooden house stands on a ground floor built with lightweight concrete blocks with insulation in the middle. Plaster on the inside and outside. The wooden house from outside to inside: 2x 22mm vertical panel-34mm horizontal batten/air gap-wind barrier.-170x45 - construction plastic-45x45 horizontal- OSB/plywood- gypsum.
170+45mm insulation with plastic in between. Have been very careful to ensure all the plastic is sealed.
Now I'm going to start with the ground floor, I've plastic-wrapped under the floor joists/ground floor ceiling and then attached 38x70 battens.
BUT what should I do now?
Should the wall plastic connect to the ground floor ceiling plastic? Or do you rely on the top plate and everything at the bottom of the wooden house being sealed? (there's a soft foam sill insulation around)
The floor will be 22mm chipboard that will be glued, so it should be fairly sealed between the floors there.
The first thought was to just let the wall plastic extend under the chipboard about 40-50mm? Or should the plastics come together?
A picture says more, so here comes a question picture.
I have searched and found, but it was a bit mixed Yes and No. But it leans towards not putting building plastic in the floor joist, but rather pulling the wall's plastic down towards the sill and sealing it there with insulation, of course, also behind it.
My drawing from the "house supplier" shows that there should be plastic there, but on the other hand, the house is not initially intended to be placed on a masonry floor either...
Then I have 2 warm and possibly humid spaces on the ground floor. Laundry room and machine room with water automatic and vp.
Maybe it should be plastic there anyway?
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