In the past year, I've been engaged in a major renovation. Replaced the facade, added insulation, and now also redone the roof. This raises the question of what to do about the eaves and the presence or absence of ventilation.
1 1/2 stories, built in 1970. One part has a finished upper floor and 100 mm insulation in both the wall against the attic and the roof.
The other part has a cold attic.
In the finished part, some of the roof decking has been blackened, but not rotten/soft. The previous eave had felt under the boards, so the question is whether much air came through there. Otherwise, there's only ventilation at the ridge.
On the cold attic, the roof decking looks like new.
If it was black where there was no ventilation, then it might be worth looking into if it can be solved now to avoid mold and/or rot.
Yes, but I'm uncertain if it really was a ventilated eave or if the black felt behind the boards in the old eave prevented the space from being ventilated.
