Windows should they be taped?

[Knalle10]

Switched to new windows in 70s villa.
Before I install the interior window trim, should I tape the gap between the drywall and the window frame with vapor-tight tape?
Does anyone know?
Grateful for tips, see the picture

 

[fribygg]

Do you have a vapor barrier/plastic in the wall?

 

[Matti_75]

Yes, it never hurts. Above all, it becomes airtight.

 

[Knalle10]

Do you have a vapor barrier/plastic in the wall?

Yes, there is plastic in the wall, but there are many screw holes in the walls, and the new windows are not sealed in any way against the plastic.

 

[Knalle10]

Yes, it never hurts. Above all, it becomes airtight

Ok thanks

 

[fribygg]

Yes, there is plastic in the wall, but there are many screw holes in the walls and the new windows are not sealed in any way against the plastic.

I think it might be easier to get a seal with latex caulk when the wall is already lined.

 

[Knalle10]

I'm thinking it might be easier to seal with latex caulk when the wall is already panelled.

But the gap between the drywall and the window is at least 15 mm, it's a bit difficult to caulk with latex.

 

[fribygg]

But the gap between the gypsum and the window is at least 15 mm, isn't it a bit difficult to seal with latex?

Isn't it practically impossible to tape the plastic on the wall to the window frame when the wall is already sheeted?

 

[Jansson69]

But the gap between the plaster and the window is at least 15 mm, it is probably a little difficult to caulk with latex

Flexible sealant is suitable here, tape is not needed in this situation.

 

[Knalle10]

Well, I have replaced the windows on a house from the 70s. So, of course, there are plasterboard walls. But there is a gap of 15 mm which I have filled with insulation. The question is if I should tape over the gap before I put on the interior moldings?

 

[Matti_75]

Tape on.

 

[Jansson69]

So I've replaced windows on a house from the 70s. So of course, there are plasterboards on the wall. But there is a gap of 15 mm that I've insulated with insulation. The question is whether I should tape over the gap before I put on the interior moldings?

Much easier and cheaper to seal that 15mm gap with flexible sealant.

 

[fribygg]

Of course, there are plasterboards on the wall.

In seventies houses, it's often chipboard on the walls, but regardless of whether it's plaster or chipboard, you can't tape the plastic in the wall against the window frame.

 

[Jansson69]

In seventies houses, there is often particle board on the walls, but regardless of whether it's gypsum or particle board, you can't tape the plastic in the wall to the window frame.

There are new houses with particle board, I was in an Älvsbyhus where all the walls were covered with particle board, I recall it was built around 2020!

 

[Matti_75]

But please, stop complicating everything. It's much quicker and easier to tape than to first press in the bottningslist and then seal the gap. It's not 100% correct, but in an old house, there are worse inaccuracies than that.