Does this contain asbestos?

[MalinStr]

We are replacing windows from -65. There is a black "cardboard sheet" in a layer closest to the windows. It looks different at each window, see differences in photos. I think the threads come from the insulation that was around it. Anyone know what the black material is? Is it regular tar paper?

 

[Viktor.J]

Impossible to answer based on images. But based on your description, it seems very likely that it does not contain asbestos.

 

[newbee]

I think it looks like asfaboard.

 

[bergquist]

If you're unsure, send it for testing; we did it when we removed an old carpet.

Not expensive at all and didn't take many days to get a response.

 

[Jonatan79]

Tar paper plus lindrev kanske