I had a similar issue at my last place—beautiful old windows, but man, those drafts were brutal. Tried weatherstripping, caulking...you name it. Final...

I've been debating gutter guards myself lately. My neighbor installed some mesh-type ones last fall, and while he says they're great for leaves, he's ...

Had the exact same issue a while back. Usually means the seal between panes failed, letting moisture in. Warranty covered mine—maybe check if yours is...

We did ours about five years ago, and I'd say they're worth it overall. Agreed, up close you can tell they're vinyl, but honestly, no one's ever menti...

Good call on checking the crawlspace—had a similar issue myself. Ventilation helped at first, but like you said, it never really solved the root cause...