We are currently erecting the frame and started last week, and we've managed to get the roof rafters up without any rain at all. About 1/4 of the roof panel (or whatever it's called) was installed by the carpenters on the rafters before the rain came this afternoon. Unfortunately, the carpenters didn't have large enough tarpaulins and weren't quick enough to put them up. Fortunately, the sections are protected with plastic or are nailed shut with planks. There is also some type of moisture-resistant gypsum board right behind the outer panel on the exterior of the wall structure, so I'm not concerned about that.
The following parts are currently wet: - The chipboard floor on the upper floor has large puddles. - The insulation on the upper floor against the outer wall is also wet, only in the corners where the factory protection was torn during assembly. - The insulation in the ceiling between the lower/upper floor is a bit wet where there are no chipboards yet. - The roof panel (the part that's up) that the roofing felt is laid on is very wet on the top side.
Should any of these parts be removed and replaced with new dry parts? Or can we expect most of it to dry over time? I don't feel particularly good about wet insulation, so I'm considering tearing it out! And can the roofing felt be laid on a wet panel, or must it be dry?
The following parts are currently wet: - The chipboard floor on the upper floor has large puddles. - The insulation on the upper floor against the outer wall is also wet, only in the corners where the factory protection was torn during assembly. - The insulation in the ceiling between the lower/upper floor is a bit wet where there are no chipboards yet. - The roof panel (the part that's up) that the roofing felt is laid on is very wet on the top side.
Should any of these parts be removed and replaced with new dry parts? Or can we expect most of it to dry over time? I don't feel particularly good about wet insulation, so I'm considering tearing it out! And can the roofing felt be laid on a wet panel, or must it be dry?
Let them seal it first of all so that no more damage occurs.
Then bring in heat and remove the damp insulation.
It's not optimal to lay roofing felt on a damp underlayer, but it's incredibly difficult to be sure to avoid rain at this time of year. If there's nothing under the raw wood that hinders ventilation, it can dry out with heat, but it takes a while.
If it's a completed subfloor, remove insulation and any vapor barrier so the subfloor dries out. If the chipboard has swollen, it must be replaced.
Here you should consult your site manager and hear what the house manufacturer says.
/Kent
Then bring in heat and remove the damp insulation.
It's not optimal to lay roofing felt on a damp underlayer, but it's incredibly difficult to be sure to avoid rain at this time of year. If there's nothing under the raw wood that hinders ventilation, it can dry out with heat, but it takes a while.
If it's a completed subfloor, remove insulation and any vapor barrier so the subfloor dries out. If the chipboard has swollen, it must be replaced.
Here you should consult your site manager and hear what the house manufacturer says.
/Kent
I was there myself yesterday morning and covered the parts that the carpenters hadn't done themselves.
Then I looked a bit closer at what had gotten wet, and according to the construction manager, the floor chipboards are supposed to withstand water (there should be some form of impregnation in them).
The insulation that was wet was only wet on the inside and will probably dry up. We need to check before we nail it back in place to make sure it is completely dry.
The worst, I assess, is the roof sheathing, which partly ended up in the middle of the rain shower and is now covered with roofing felt.
According to the construction manager, you cannot apply heat from below because then the roof sheathing will "explode" and lift, he says.
I haven't gotten a good explanation of what he means, but he says the moisture must be allowed to migrate out slowly and without adding heat from below.
I brought KA there yesterday afternoon, who assessed that there was no risk of moisture damage.
So now I am calm and can sleep well at night again....
Then I looked a bit closer at what had gotten wet, and according to the construction manager, the floor chipboards are supposed to withstand water (there should be some form of impregnation in them).
The insulation that was wet was only wet on the inside and will probably dry up. We need to check before we nail it back in place to make sure it is completely dry.
The worst, I assess, is the roof sheathing, which partly ended up in the middle of the rain shower and is now covered with roofing felt.
According to the construction manager, you cannot apply heat from below because then the roof sheathing will "explode" and lift, he says.
I haven't gotten a good explanation of what he means, but he says the moisture must be allowed to migrate out slowly and without adding heat from below.
I brought KA there yesterday afternoon, who assessed that there was no risk of moisture damage.
So now I am calm and can sleep well at night again....