Funny, I’ve seen a lot of folks run into the same dilemma with old sashes—sometimes the wood’s just too far gone, and you’re right, there’s a point wh...

I get where you’re coming from with wood hardener, but in my experience, it’s a bit of a gamble if you’re dealing with anything more than minor surfac...

That’s the only way to survive a pre-war house. I’ve seen sashes off by half an inch from one side to the other—makes for some interesting trim work. ...

That lines up with what I see a lot—minor fogging doesn’t always mean you’re hemorrhaging energy. If the condensation is just a little haze and not pu...

Compression foam definitely has its place, but yeah, durability can be a bit iffy over the long haul. I installed some compression foam strips around ...