- Petroleum jelly's a decent quick fix, used it myself on smaller projects—works fine short-term.
- But for outdoor builds, especially roofs or decks, I'd be cautious. It tends to wash out or dry up after a while.
- If you're looking for budget-friendly and reliable, try galvanized or coated screws instead. They're not pricey and hold up better against rust long-term.
- Learned this the hard way after a green roof project... petroleum jelly screws rusted out after a few seasons, ended up replacing them all.
- Marine grease is messy, yeah, but a little goes a long way. Still, galvanized screws are probably your best bet for cost vs durability.
"Learned this the hard way after a green roof project... petroleum jelly screws rusted out after a few seasons, ended up replacing them all."
Can totally relate to this. Built a small garden shed a couple years back and thought I'd save some cash by using regular screws with petroleum jelly. Worked fine at first, but after one rainy winter, it was rust city. Ended up spending a weekend replacing almost every screw—lesson learned the annoying way.
Switched to coated deck screws after that, and honestly, they're worth every penny. Haven't had rust issues since, even with heavy rain and snow. Marine grease does sound tempting, but the mess factor puts me off. Galvanized or coated screws seem like the sweet spot between cost and hassle-free durability.
- Coated screws are decent, but honestly stainless steel is the way to go if you're serious about longevity.
- Yeah, they're pricier upfront, but factor in your time and hassle replacing rusted screws every few years...
- Did a green roof on my shed 5 yrs ago—stainless screws still look brand new. Worth considering if you hate maintenance as much as I do.
Stainless steel screws definitely have their advantages, especially if you're looking at long-term durability. I've used both coated and stainless screws extensively, and while coated screws can hold up reasonably well, they inevitably start showing signs of corrosion after a few years—particularly in damp or exposed conditions.
One thing to keep in mind, though, is the type of stainless steel you're choosing. Not all stainless screws are created equal. For outdoor projects, especially near coastal areas or places with high humidity, you'll want to go with 316-grade stainless steel rather than the more common 304-grade. The higher molybdenum content in 316 stainless significantly improves corrosion resistance, making it ideal for harsh environments.
I learned this the hard way after using cheaper stainless screws on a deck railing near the coast. Within two years, I noticed some minor surface rust spots appearing. Switched to 316-grade screws for the next project, and they've been spotless ever since—going on seven years now.
Just something to consider before you commit to buying a bulk box of screws...
Good points about stainless, but honestly, I've had great luck with hot-dipped galvanized screws. Built a fence five years ago in rainy Oregon weather, and they're still holding up fine—no rust yet. Stainless is nice, but sometimes feels like overkill (and overpriced)...