I am going to be installing 1 1/8″ t&g sturdi-floor sanded plywood over 3 1/2″ X 14″ wide I Joists. I have gotten many different answers as to the nailing pattern required. I plan on using Pl adhesive also.Some guys say I should use 3″ screws instead of nails. This will be the finished floor in my new woodshop. Any one want to set me on the right track?
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The plywood being T&G and being glued, probably the nails/nailing pattern isn't all that critical. The glue will hold the plywood once it has set--the fasteners in that case are more or less like clamps. 3" screws would be good, if you could do it (maybe can rent one of those screw guns where you stand up, but I've screwed down kitchens of tile backer by just crawling around on my hands and knees and it wasn't bad. If you could rent a framing nail gun (and know how to use it safely) 16d nails would be fine, I'd think--something like a foot apart along the joists. See what others say--this reply would put your posting nearer to the top so more can reply.
I only do a little framing but I think 3" screws are overkill. The I-Joist flange is 1.5" thick, correct? So 1.5"+1.125" is less the 3" so your screws will stick out the bottom of the flange unless you hit right in the web. Just a thought.
the glue will do all the work...
screws is more than ya need..
3"ring shanks 8"oc and you'll never get it apart...
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I'd probably go with PL Premium and a 6/12 schedule. If I'm ever in doubt, that's what I go to. Screws are great, will help reduce squeaks, but it's a lot of time. I'd likely for 16d or ringshanks--with a framing nailer, I can just fly through.
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The APA website has the correct numbers.
has anyone used this instead of two layers of 1/2 inch bc grade?thats what was recommended to me.
yes...
works well...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!<!----><!---->
Forget the primal scream, just ROAR!!!
We use 2 1/2" strip screws that work in nail guns. I but them from my nail supplier, I'm sure if you ask around you can find some.
Just shoot 'em in just like nails, only if you want to pull one out you can use a phillips bit. They work a lot better than the ringshanks. I usually hit 5-7 in each joist. Don't but the 1 1/8" too tight if there's a chance it'll get wet. It has a bad tendency to delaminate. Advantech is much better.
John
thanks for the info, the local hardware store rents a screwgun for $40 a day that you can stand up and operate.Looks like the way to go. Not to pleased to hear about the plywood delaminating if it gets wet.Hope to get the walls up on the second floor and the roof on before we get our first rains in a month or so.Woking with POLYSTEEL ICF's is fun and fast. I'll keep breaktime posted