Nick
In Remembrance
We can kidnap him at a port of call.
Thanks for explaining that. I thought I read somewhere (I could be wrong) that 24" on center was common for spacing and that if it was more than that, it would require thicker. I'm trying to remember my math. Both 5/8+3/8 and 3/4+1/4 equal 1 inch, right? I'd love to do tongue and groove if I could find it. I'm thinking 3/4" might be easier for me to manage than 5/8" because of the weight, but ultimately it depends on what is available in the store. I really hope they have tongue and groove for a reasonable price.Starting from the bare joists, it would be nice to see at the very least 1/2" on 16" centers would work, but I'd go at least to 5/8". 1/2 inch is skating on thin ice. 3/4" T&G would be way better. Thicker is always better. If the joists are wider than 16 on center, you need even thicker material.
Lay the subfloor perpendicular to the joists... that's really important for strength because the plywood has one more layer in length than width. That makes the plywood much more rigid if it's installed correctly.
Imagine the plywood grain as one of those exterior roll up bamboo window or deck shades. Another example might be a mini-blind for windows.
Imagine unrolling the bamboo shade or laying the mini-blind over the bare floor joists........... lay it parallel, them lay it perpendicular to the joists.
One way it lays over the joists like a limp blanket and layed the other way the shades will lay perfectly flat. That additional layer of veneer adds a lot of strength.
As for the underlayment... the thicker/stronger the subfloor is the thinner the underlayment could be. 5/8" subfloor and 3/8" underlayment would work. With 3/4" or thicker subfloor and 1/4" underlayment would work.
I suppose knowing the joist spacing is first on the list.
This is probably more than you asked for, but it's good info. I'm gonna save this one. Lots of good info for ya.
For 24" on center, 3/4 or thicker.
http://www.pfsteco.com/techtips/pdf/plywooddesignapplicationguide
I wouldn't use pressure treated for anything that is going to have vinyl over it. I'm not sure if it's safe for indoor use either. I'd contact the manufacture of the plywood and ask them what the preservative is and if it will stain the vinyl. Maybe there is a treatment that's safe for both indoor use and won't stain the vinyl over time. I just don't know about that sort of stuff because it's never used where I live.
....and someone left the gate open.
who let the dogs out............
Paid for another cruise over Xmas leaving Auckland
Looks like I still have to carry on working for awhile yet
https://www.seabourn.com/details?we...ode=7792&selectedMeta=Veranda Suite&shipId=SE
A 40 tooth carbide combo blade... Metal cutting blade is $60 and a regular carbide blade is...What kind of blade are you using?
:camping:
Daris
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