“You’re spot on about those corners; they’re always the last to dry and the first to cause trouble if you miss them.”
That line hit home. I can’t count how many times I’ve thought a deck was good to go, only to find out later that one stubborn corner held onto moisture like a grudge. Had a job last summer—old cedar deck, lots of tree cover. Looked dry at first glance, but my pin meter kept screaming at me in the back left corner. Sure enough, when we pulled up a board, there was just enough dampness underneath to make me pause. Ended up running fans for an extra day and it paid off—no swelling or buckling after the underlayment went down.
I know some folks swear by IR meters, but I’m with you—they just don’t seem to get it right with wood. Maybe it’s the density or something, but I’ve had them tell me things are bone dry when my gut (and the pin meter) said otherwise. I’ll trust my tools, but I also trust my boots-on-the-deck instincts.
One thing I started doing is checking under any stacked materials or tarps before calling it dry. Learned that lesson the hard way after a stack of shingles sat on one end and trapped moisture underneath. Now I move everything around and check every spot, especially those shaded areas you mentioned.
Humidity’s a beast here in the Midwest—sometimes feels like you’re fighting a losing battle, especially in late spring. But taking that extra time with the meter and not rushing pays off every single time. Deck prep isn’t glamorous work, but it saves headaches down the road.
Funny how it’s always those little details—the corners, the shaded spots—that end up making or breaking a job.
Corners are like little gremlins for moisture—never trust 'em. I’ve had to crawl around with a pin meter too, feeling like I’m playing hide and seek with wet spots. IR meters? Meh, hit or miss for me. Nothing beats actually poking around and checking under stuff. If you skip a spot, it’ll come back to haunt you... always does.
Corners are always the trouble spots, no doubt. I’ve lost count of how many times I thought a deck was good to go, only to find a damp patch tucked away in a back corner or right under a window. My process is pretty methodical at this point—start with a visual sweep, then I’ll run the pin meter along every seam and edge, especially where flashing meets the deck. IR meters are fine for big leaks, but like you said, they miss the sneaky stuff.
I always pull up a few boards if anything feels even slightly off. Had one job where everything looked dry on top, but there was a soft spot under the fridge—turned out water had been wicking in from a tiny gap for months. If you skip those checks, you’re just asking for callbacks later.
I’m not shy about using my nose either. Musty smell? That’s usually a sign to dig deeper. It’s tedious, but I’d rather spend an extra hour now than deal with mold complaints down the line.
Funny you mention the nose test—I’ve caught more hidden rot with a sniff than with any fancy tool. I’m with you on pulling boards if anything feels off, though I’ll admit I sometimes get a little obsessive with the pin meter. One thing I do differently: I always check under any appliances or built-ins, even if the rest of the deck looks perfect. Learned that lesson after chasing a mystery smell for way too long... turns out, water loves to hide where you least expect it.
I hear you on the nose test—it’s surprisingly effective, especially after a storm when moisture gets trapped in weird spots. I’m a big fan of pin meters too, but I always double-check under anything that’s been sitting for a while, like heavy planters or built-ins. One step I never skip is probing the fastener holes and seams with an awl. Even if the surface looks solid, sometimes there’s soft wood just beneath. I’ve also found that using a strong flashlight at a low angle can reveal subtle warping or discoloration you’d miss otherwise. It’s tedious, but I’d rather catch it now than deal with a failure later.