Joist tape on a small ground-level deck - worth the money or overkill?

I went with the joist tape on my small 12 by 16 platform, even though my neighbor thought it was overkill. We built ours in a slightly shady spot under a lean-to, so keeping water away from the connection points was a must for me. I used Pro-Joist brand tape and wrapped the joints before I set the decking. Even after a couple of heavy rains, I haven't seen any swelling or browning on the ends of the joists, which made the extra step feel totally justified. As for the hardware, I started with hidden clips, specifically the ones that slot in without drilling through the side of the board. It looks much cleaner than regular lag screws, which is huge for the aesthetic, expecially since I was using cedar stain. My biggest concern with the clips was making sure the underlying framing was perfectly level so they seated flush, but once that was done, they stayed tight and stable after a few seasons of just patio furniture sitting on them. I've found that even the best stain won't stop rot if moisture gets trapped in the wood grain itself, so prioritizing the joist protection was the smartest call I made. It just makes the whole thing feel more robust and worry-free.

I didn't use tape on my deck, even though the idea of water getting trapped in the joints is something I definately considered. My wife and I were building a small 8 by 10 platform about three years ago in a slightly dry area, and I figured the wood itself would handle it fine. I used pressure treated 5/4 decking and made sure to leave a decent gap between the boards, maybe 7 inches across the span, to allow airflow under the whole thing. It really makes a difference in keeping the frame dry rather than relying solely on covering the joists. My main philosophy was that as long as the wood I chose had a decent protective finish, like a high quality stain that penetrates deep, the exposure wouldn't be an issue. The previous reply mentioned their spot was shady, and while that means moisture is a factor, my deck got direct sun most of the day. I found that the ventilation and the material selection were more critical than adding extra tape to the framing.

For the screws, I stuck with the hidden clip systems. It was a bit trickier getting the mounting hardware lined up perfectly during the initial install, but from a cosmetic standpoint, it's definitely cleaner. The clips I used are designed to be resistant to corrosion, which was my main concern over using standard galvanized screws. I haven't seen any signs of warping or rot yet.

Tape's cheap insurance, I'd just throw it on. Took me ten minutes on my build a few years back and it's annoying to add later once the boards are down. I skipped the hidden clips though and went with regular screws, mostly because I wanted to be able to pull a board if one ever cracks. With clips you're kinda stuck if you need to get one up. Anyone else find that a pain when a board warps?

Agree with the screw crowd here. I taped my joists before the boards went down and it paid off two summers later when a cupped board needed swapping. Took out four screws, slid the new one in, done in under an hour. Also, since your deck sits low to the ground, run the tape over the screw holes too so water can't wick down through the fasteners. My frames still look solid as the day I built them.

Reading this made me realize I never even thought about the tops of the wood getting soggy. My dad has an old ground-level platform behind his shed and the boards are fine but the frame underneath looks rough, so maybe there's something to the tape thing. Quick one though - does the tape go on the top of the horizontal pieces only, or do you wrap it around the sides too? Also does it matter if you put it on before or after you screw the boards down, or is after pointless since the holes are already there?

Kind of relieved reading this since I'm mid-build on a small deck off my back door too, though mine sits on piers instead of being close to the dirt like yours. I haven't bought any tape yet and my lumber is already sitting out in the rain, which now has me second guessing. Mine's actually smaller than yours, barely fits a table and two chairs, and my wife said the same thing about it being exactly what we need, funny how that works out. One thing I'm still stuck on is how much gap to leave between boards on something this low. I don't want water sitting between them but I also don't want huge gaps you can see through from the yard.