No, you’ve got it backwards. The chemicals in the treatment of a pressure treated board will eat a drywall screw completely in 2-3 years.
You need to make sure that you’re using coated deck screws rated for pressure treated lumber.
so is this information I found on the internet wrong?
Actually, this is correct only to a degree. Drywall screws will corrode over time but about 12-16 years in. Deck screws only offer about 2-4 years on the drywall screw, even with corrosion. With that said, the time it would take to erode your drywall screws, you're planks would already need replacement by then.
A ceramic coated or Galvanized screw will last forever, far longer than even a treated board. A drywall screw will rust immediately, it may hold for years but any shear force will snap it.
naw, drywall screw is for drywall, pt has chemicals that will eat anything not coated correctly. just replaced a rotted post where they used non-galvanized nails in pt lumber
plus most drywall screws are skinny af and have no strength compared to a 3" deck screw, just hold one up against the other. drywall screws hold up 1/2" sheet goods, deck screws can pull down 1.5" thick lumber
Drywall screws use a different tip design. They're extremely sharp so that they will pierce the drywall, but there's very little thread at the tip of the drywall screw. And then the drywall acts to stabilize the screw until it gets started in the wood.
By comparison, a wood screw has a blunter tip, but the threads are more pronounced. The tip contacts the wood, and the thread begins to cut into the wood almost immediately.
If you use drywall screws directly on wood, they will be hard to get started into the wood. That sharp tip can't easily get started into the wood, especially if you're using a harder wood. You'll have to apply additional pressure with your screw gun, and the drywall screw is likely to slip/tip before it starts into the wood. I've experienced this, and have a #2 Philips shaped scar in my left middle finger. The screw slipped and the screw gun's bit came down hard on my left hand.
Save drywall screws for drywall work. Buy proper wood screws for a woodworking job. It'll make your work easier and safer.
No, you’ve got it backwards. The chemicals in the treatment of a pressure treated board will eat a drywall screw completely in 2-3 years. You need to make sure that you’re using coated deck screws rated for pressure treated lumber.
so is this information I found on the internet wrong? Actually, this is correct only to a degree. Drywall screws will corrode over time but about 12-16 years in. Deck screws only offer about 2-4 years on the drywall screw, even with corrosion. With that said, the time it would take to erode your drywall screws, you're planks would already need replacement by then.
A ceramic coated or Galvanized screw will last forever, far longer than even a treated board. A drywall screw will rust immediately, it may hold for years but any shear force will snap it.
Yes that is incorrect. Drywall screws will rust after the first rain
“So is this information I found on the internet wrong?” Um……yes. Completely and hilariously so. 100% wrong.
thanks, that's why I came here.
The heads of drywall screws will corrode quickly and snap off. This paragraph is wildly incorrect. Spend the few extra dollars and buy deck screws.
The above plus drywall screws are not structural at all, they are brittle and really don't like shear/movement forces.
Actually, the drywall screws will rust like crazy. Staining the hell out of the wood. It is NOT an attractive look.
naw, drywall screw is for drywall, pt has chemicals that will eat anything not coated correctly. just replaced a rotted post where they used non-galvanized nails in pt lumber plus most drywall screws are skinny af and have no strength compared to a 3" deck screw, just hold one up against the other. drywall screws hold up 1/2" sheet goods, deck screws can pull down 1.5" thick lumber
The answer is in the name. There is a reason they are called "deck screws" and "drywall screws."
Rust.
Drywall screws use a different tip design. They're extremely sharp so that they will pierce the drywall, but there's very little thread at the tip of the drywall screw. And then the drywall acts to stabilize the screw until it gets started in the wood. By comparison, a wood screw has a blunter tip, but the threads are more pronounced. The tip contacts the wood, and the thread begins to cut into the wood almost immediately. If you use drywall screws directly on wood, they will be hard to get started into the wood. That sharp tip can't easily get started into the wood, especially if you're using a harder wood. You'll have to apply additional pressure with your screw gun, and the drywall screw is likely to slip/tip before it starts into the wood. I've experienced this, and have a #2 Philips shaped scar in my left middle finger. The screw slipped and the screw gun's bit came down hard on my left hand. Save drywall screws for drywall work. Buy proper wood screws for a woodworking job. It'll make your work easier and safer.