Author Topic: What size screw to use on 3/4 subfloor?  (Read 5974 times)

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pioneergal

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What size screw to use on 3/4 subfloor?
« on: November 30, 2005, 02:35:15 AM »
I know that my question has probably been addressed already on the forum but I can't find it.

I found on one forum that you were to use a 2 1/2 screw on 3/4 plywood but my DH thinks that may be overkill.

He seems to think that not more than a 2'' screw if even that much.

Thanks in advance for the help!

Spyke

  • Guest
Re: What size screw to use on 3/4 subfloor?
« Reply #1 on: November 30, 2005, 04:09:42 AM »
Whats wrong with overkill???? ;D

If you are using 3/4" subfloor 2" screws should be fine. Remember to glue it before you screw it. ;D

Jimmy_Cason

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Re: What size screw to use on 3/4 subfloor?
« Reply #2 on: November 30, 2005, 06:13:33 AM »
I think this is the thread you were looking for.

http://www.countryplans.com/cgi-bin/yabb2/YaBB.pl?num=1128040505/0

tjm73

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Re: What size screw to use on 3/4 subfloor?
« Reply #3 on: November 30, 2005, 11:31:07 AM »
Quote
Whats wrong with overkill???? ;D

Absolutely nothing!  Overkill is a good thing....IMO  ;D

Amanda_931

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Re: What size screw to use on 3/4 subfloor?
« Reply #4 on: November 30, 2005, 01:29:57 PM »
Might be a couple of things wrong with overkill in this case.

Takes more time, sometimes rather a lot more time to screw in extra-long screws.  Might be the end of my help on the project if I ended up with numb and/or vibrating hands because of the extra time.  I already have carpal tunnel syndrome, thank you, don't need it to be worse.

Takes more money.

glenn-k

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Re: What size screw to use on 3/4 subfloor?
« Reply #5 on: November 30, 2005, 01:58:36 PM »
I think screwing is for people with way too much energy.  If I wasn't planning on removing it I would just shoot it down with a nail gun and galvanized ring shank nails- glue if desired - screws shear easier than nails  with expansion and contraction.  Maybe I'm wrong but the ringshanks won't come out and I'm lazy. :-/
« Last Edit: November 30, 2005, 02:00:35 PM by glenn-k »

Amanda_931

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Re: What size screw to use on 3/4 subfloor?
« Reply #6 on: December 01, 2005, 02:57:25 PM »
Might be easier even if you don't have a nail gun.  If you're good at nailing.  I could nail a subfloor (with cement coated sinkers--I've gotten the impression that they are easier than galvanized) in a 3-step process--grab-nail-and-set, WHOMP WHOMP--guys I was working with were grab-and-set, WHOMP, grab-and-set, WHOMP.  But among other things I think their starting the nail was a bit more active than mine.  I hated to mash my fingers.

glenn-k

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Re: What size screw to use on 3/4 subfloor?
« Reply #7 on: December 01, 2005, 03:07:57 PM »
For nailing down floor years ago with my uncle, we used screw nails also which have resistance to working loose similar to ringshanks - we are talking about 10 times more holding power according to Ken Kern, if I remember right.

I worked with a guy at the diesel shop who liked to hammer like you mentioned, Amanda.  A friend of mine observed that all his fingers looked like spatulas.  When he was on the forklift everybody moved out of the way -- he drove like he hammered.

Amanda_931

  • Guest
Re: What size screw to use on 3/4 subfloor?
« Reply #8 on: December 01, 2005, 03:29:06 PM »
But forklifts only have one speed, don't they?? flat out?

What I always thought.  And did.  Sometimes I could even do it smoothly.