Sometimes it feels like these houses are actively trying to keep you guessing.
That’s the truth—old houses are full of surprises. I’ve had similar issues with over-sealing, too. Did a big rehab once and ended up with condensation on the windows for months until we added an HRV. Blower door tests have saved me from missing weird leaks more than once, though. Not cheap, but they’ve paid off in the long run for me.
Funny you mention blower door tests—I used to think they were overkill, but after finding a leak behind an old built-in, I’m a convert. Ever run into the issue where you fix one draft and suddenly another pops up somewhere else? It’s like whack-a-mole sometimes.
Man, I hear you on that—it’s always one step forward, two drafts back. Every time I seal up a spot I swear the air just finds a new escape route. It’s wild how old houses especially seem to have endless secret passages for drafts. I’ve had jobs where we’d chase leaks for weeks and only finally get ahead of it with a blower door test and thermal camera. Sometimes the culprit is something weird, like a gap where plumbing runs through a sill plate or even under the stairs.
Curious, when you found that leak behind the built-in, did you end up opening up walls or just patching from the outside? Some folks go all in and pull apart half the room, but I try to keep it as non-invasive as possible unless there’s mold or rot. There’s always that balance between fixing what you find and not turning the whole place upside down.
Also, do you ever get pushback from clients who think sealing up every draft will make their house “too tight”? I’ve had a few who worry about “stale air” if we go overboard. Always makes me wonder where folks draw the line between comfort and ventilation.
Man, you nailed it with the “secret passages” bit—old houses are like Swiss cheese sometimes. I’ve definitely had those moments where you fix one draft and suddenly there’s a new cold spot across the room. As for that leak behind the built-in, I’ll admit, I went halfway. Popped off the trim and a couple boards to get a look, but didn’t go full demo unless I saw signs of water damage. No sense in tearing up more than you have to, especially if you’re planning to flip or rent.
And yeah, the “too tight” house debate comes up all the time. Some folks are convinced they’ll suffocate if you seal every gap. I usually tell them, look, you want control over your air—not just random leaks. If you’re worried about fresh air, get a proper ventilation system or at least crack a window when you need to. Beats paying to heat the outdoors, right? I’d rather deal with a slightly stuffy room than drafty floors in January... but maybe that’s just me.
“old houses are like Swiss cheese sometimes. I’ve definitely had those moments where you fix one draft and suddenly there’s a new cold spot across the room.”
That’s the truth—patch one hole and three more pop up somewhere else. I swear, my place has more hidden nooks than a mystery novel. I’ve found everything from old newspapers to a petrified mouse in those “secret passages.” Makes you wonder what the original builders were thinking.
I hear you on not going full demo unless you see real damage. I’ve learned the hard way that sometimes less is more, especially if you want to keep the character (and your sanity). As for the “too tight” debate, I get where folks are coming from, but honestly, I’d rather have control over airflow than just let the wind decide for me. A little stuffiness beats waking up to an arctic breeze under the covers.
If you’re insulating an old house, patience is key. It’s never as quick as you hope—there’s always some weird corner or hidden cavity that slows things down. But once it’s done, those January drafts aren’t nearly as menacing.