That’s been my experience too—honestly, I’ve seen more water stains in attics from a missed step in the install than from the underlayment itself. I r...

That’s my main gripe with powered attic fans too. If the attic’s not sealed off well, they’ll pull your AC right out through every gap and can even ba...

That’s pretty much my approach too—layers of checking, not just trusting the gadgets. I’ve found pin meters can be a little more reliable than pinless...