[left][url]https://photos.app.goo.gl/3iSFVgrWmeTaBsN1A[/url]Hello everybody, My name is Alex and I am going to add more insulation to my attic, the townhouse was build in 1985 the roof was changed in 2015 I am going to seal all the holes I see under the current cellulose insulation. I saw that the window vent has some old and abandones bee house also the wood around it seem rotten. The wall under has a stain and I’m not sure if I should start worrying about replacing. the house has plastic siding all around also I found some air baffles install but there are no soffits in that area. Or it has been blocked with a 2 x 4 yhere are two skylights that have fiberglass insulation that keeps falling over and making the room below heat up pretty bad. please advise what can i do and if I need to worry about the wet mark in the wall. also any good recommendation on how to insulate I’m trying to keep it DIY.[/left]

Looks like it's a hole from an appliance vent that someone put spray foam . Is there a better way to seal It. basement is finished. [url=https://postimg.cc/67tvxPHP][/url]