Drywall Screw gun for plywood floor ?

25mm screws would be ideal for the job, what's the smallest screws you can get for the gun?
Suppose it depends on what's likely to be beneath the boards, pipes and cables perhaps?
How big an area are you talking about?

 

I've used one to fix an 18mm ply floor.

 

That's a lot a screws, 2500 should do ya.
If you can be certain no services will be damaged, go for it!

 

Include the extension arm so you can screw standing up.

 

'69'

 

I think that's a bit different.

 

I have a FEIN M-gun and it paid for itself in just a day or two when I had labourers putting up plasterboard. You can get a mains powered one for around £200 and there is now a battery version.

Since then, I used it to fix 12mm T&G boards without problem. Something like 2000 screws in under four hours. The Fein works well with the B&Q/SF collated screws - I picked some up at around £4/box in a clearance. I have also used it for Hardie Backerboard and a few other smaller jobs. Get some scrap to practise on - keeping it running and moving from one to the next needs a little practice - there is always the temptation to release the trigger, but don't. As mentioned, get an extension so you can work standing up.

It is one of those tools I am really glad that I purchased.

 

If that is fixing 12mm T.G.V it must look absolutely terrible.Correct way is to nail through the tongue.

 

I know! But in this case they are not visible. Garden room with decent quality 150x50 rafters, boards laid on top, followed by membrane, battens and cedar shingles. So, the screws are from above and not visible and actually it give the effect I was told to get!

 

I bought a cordless Makita 14.4v LXT autofeed screw gun and it paid for itself time and time again. Uses any collated screws Ive bought wth no problems. Its my ideal tool when I've got a lot of first fix flooring to put down that'll get covered later on, not so good for finished flooring unless you want the diy look.