#30 felt or grace over non-pt deck joists; Yes or no?
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yes
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no
Spheramid Enterprises Architectural Woodworks
" Nie dajê siê olœniæ statkami parowymi i kolej¹ ¿elazn¹. Wszystko to nie jest cywilizacj¹. - Francois Chateaubriand (1768 - 1848) "
just out of curiosity, why not?
Because..unless you are building a temple to the Gods, it is pointless to add a layer to the 100 yr old framing....it is already ensconsed in the grand scheme of lively hood..and will continue to be so.
The more you try to overengineer the grand scheme, the more you waste time of YOUR grand scheme..it's wood dude, let it live and die, like all of us will face.
Adding a diaper, dont stop the poop..the poop will still be there. Spheramid Enterprises Architectural Woodworks
" Everything looks like a nail, to a hammer"
I've torn up plenty of these covered decks that had 30# paper over the joists and after a hundred years, the only plces that had any rot in th ejoists was where a lot of water splashed in on it or got trapped. The ones with no tarpaper were way gone. We usually use vycor I&W going back in.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
How do you know it is covered? OP said "deck"..notta "pooch"
Great Piffinac arises? Spheramid Enterprises Architectural Woodworks
" Everything looks like a nail, to a hammer"
read #6 againand if it's out in the open, so much more the reason for sealing it over. The main rot i see there on these old ones is the back side of the decking while the joists stay protected.
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
But that was 30 pound paper from a hundred years ago. How many layers of today's "30#" would it take to have the equivalent protection?
Like I said, we use vycor, but even 15# will be better than nothing
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
maybe
Stacy's mom has got it going on.
Can you explain what your using non-pt joists for? I'm sure your not using them for a open deck.
the joist comprise the deck portion of an entry porch built 105 years ago. they are pretty good shape surprisingly enough. My main concern is water getting into the joists via the nail holes left by the original decking and rotting them out over time. I thought about reframing the whole deck, but the old framing is fine. I just want to ensure it stays so.
I just did some work on a deck that's 20 years old. The joists are standard fir 2x8s and the decking is cedar 2x3 spaced about 3/8" apart. The joists are in fine shape except for places around the edge where there's a band of 2x decking as a perimeter--that band trapped water against the ends/edges of the decking and the top part of the rim joist, causing rot in both. Otherwise the standard fir joists are fine.
In the areas that I reworked I flashed the tops of the joists with Vycor. Got the 6" stuff and ripped it in half. Stapled it occasionally along the edges where I folded it down. In the areas the I built new I used PT and the same flashing detail.
I have used asphalt roll roofing # 90 strips to protect large beams on a structural deck ( shingles would do the same ). Just trimmed to over hang the sides by a bit. Also acts as a gasket around nails / screws and deflects water away from the joist. Going to use this detail on my own deck. PWF materials are generaly CRAP, and am going to use D fir.
IF IT WAS EASY, EVERYONE COULD DO IT !