Best way to lay deck boards on exposed trusses?

- Totally get the worry about shortcuts - seen too many decks rot out from trapped moisture.
- Sleepers with a slope are solid, especially in wet climates. I’ve seen folks skip that and end up with puddles under their deck boards... not pretty.
- Pedestals seem cool but yeah, price can be nuts for small jobs. Sometimes feels like every year there’s a new “must-have” system that’s supposed to fix all problems.
- Curious - has anyone tried those composite sleeper systems? Wondering if they actually hold up better long-term or just another gimmick.

Had a client try composite sleepers after a bad flood season - honestly, they held up better than expected. No warping or rot after two years, but they did get a bit spongy in spots. Not perfect, but definitely less maintenance than wood in wet zones.

No warping or rot after two years, but they did get a bit spongy in spots. Not perfect, but definitely less maintenance than wood in wet zones.

That’s actually really reassuring to hear. I’ve been debating whether to go composite or stick with treated wood for the deck I’m planning - my backyard floods every spring, and I’m tired of replacing boards. The “spongy in spots” thing worries me a little, but honestly, if it’s just in a few areas and not causing any sagging or safety issues, that sounds like a trade-off I could live with.

For anyone else reading, here’s what I’ve learned so far: lay down a vapor barrier if you can (some folks use landscape fabric), and make sure your trusses are set up for good drainage. I watched a few tutorials where people spaced the sleepers out just enough to let air flow underneath. It seemed to help with moisture buildup.

I love the idea of less maintenance. Even if composite isn’t perfect, not having to stain or replace rotted boards every year sounds like a win to me.

I get the appeal of composite, but I’ve seen it get pretty slick when wet - especially in shaded spots. If your yard floods every spring, you might want to factor that in. Treated wood isn’t perfect, but at least it’s got some grip. Just something to think about before you commit.

If your yard floods every spring, you might want to factor that in.

That’s a fair point. I’ve seen composite get almost as slippery as ice after a good rain, especially if there’s any algae buildup from shade or standing water. Had a client last year whose deck turned into a skating rink after their sump pump failed - made me rethink composite for flood-prone spots. Has anyone tried those anti-slip strips on composite? Wondering if they actually hold up long-term or just peel off after a season...