Hello house building community,
We have a small problem. In our new build, we finished the insulation and then stapled the vapor barrier to the battens. Then we were told it is better to attach the vapor barrier to the plaster instead of directly to the masonry to achieve better airtightness. So we waited until the plasterers were finished before sealing the vapor barrier. However, since we ordered a complete dry construction package, we had to install the drywall (gypsum board) on the ceiling right after the plasterers, as we have no space for the drywall and the underfloor heating was already installed. Now we wanted to bond the vapor barrier to the plaster with Siga Primur, which initially looked quite good. But after 1-2 days, in one place or another, the Primur ran down the wall like water and simply did not set. Since the plaster apparently is not completely dry yet, we think this might be the cause.
Our problem now is that the screed will be poured early next year, and the vapor barrier is still not airtight bonded to the wall. We need a short-term solution. One idea is to try to temporarily seal the vapor barrier to the wall more tightly with duct tape so that no moisture can penetrate the insulation, and then after the screed dries, make another attempt with the Primur.
What do you think of this idea, or does anyone maybe have another suggestion on what we could do?
Regards,
nano81
We have a small problem. In our new build, we finished the insulation and then stapled the vapor barrier to the battens. Then we were told it is better to attach the vapor barrier to the plaster instead of directly to the masonry to achieve better airtightness. So we waited until the plasterers were finished before sealing the vapor barrier. However, since we ordered a complete dry construction package, we had to install the drywall (gypsum board) on the ceiling right after the plasterers, as we have no space for the drywall and the underfloor heating was already installed. Now we wanted to bond the vapor barrier to the plaster with Siga Primur, which initially looked quite good. But after 1-2 days, in one place or another, the Primur ran down the wall like water and simply did not set. Since the plaster apparently is not completely dry yet, we think this might be the cause.
Our problem now is that the screed will be poured early next year, and the vapor barrier is still not airtight bonded to the wall. We need a short-term solution. One idea is to try to temporarily seal the vapor barrier to the wall more tightly with duct tape so that no moisture can penetrate the insulation, and then after the screed dries, make another attempt with the Primur.
What do you think of this idea, or does anyone maybe have another suggestion on what we could do?
Regards,
nano81
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