subfloor 14'

[dogneck]

Just a beginner (I searched and read a whole lot of subfloor questions, but can't find the right answer) so --

on the 14x24.   I'm going to install advantec 3/4 t&G.     Since 3 sheets x 4'= 12    Where is it best to put the other 2".    Should I put it right on the end?   If I put it in the middle somewhere,  so I have full sheets at the beam/walls,  then the T&G won't work?

[OldDog]

Install it using the T&G.  Rip last sheet to fit.

Glue it.  Helps stop squeeks

Screw it.  Put a screw on every dot on the Adventech (abt every 6")

[PEG688]

  Lay it with the 8' lenght going with the 24' long direction. Start the 2nd row with a 4'x4' long piece so your  butt joints do NOT all line up, the 4' joints (ends of the sheets) should be off set. So you'll have two rows of full sheets, one row  (2nd one )that has a 4 x 4  to start then 3 ea. 4x8 full sheets , then another 4x4 sheet to finish.

The last row will be  start with a 2x4 ripped down piece , then 3 ea, 2x8 pieces , then the last pieces will also be a 2x4.

You will have 4ea 2x8 pieces left over.



   

[TheWire]

Not sure if its the case with advantec but most T&G sheets are 4' wide including the tongue and the sheet only covers 47.5" or so.  Which means when you have a house built on 4' centers, you run short by the time you get to the other side.  In your case, with the 14' dimension, you won't run short, but your sheets may need to be more than 24" to compensate for the loss in the T&G joint.  MtnDon reduced his 16' cabin width to allow for this.  But he may have to now trim 4x8 wall sheeting because it is really 4' wide.

Jerry

[MountainDon]

Yep, Jerry. I did have to trim a little off the final sheet on each end wall.  The framing was all planned so the wall studs were placed to allow working from each north side corner using a normal 48" panel size. Just the final framing is "off". No big deal. It worked well for me.

People actually read what I write?     

[paul s]

3 sheets will not usually cover 12'  u loose on the tounge and grove.  i was watching men subfloor a 28' widefloorand wassuprisedtoseehow shortit came up to the 28'

[mechengineer13]

TheWire and Paul S are both correct.  Advantech is rated at 47.5" face width across the 4 foot dimension.  It actually measures 47" across the exposed face so your width will be 47" plus whatever gap you end up with at the tongue and groove interface.  I wasn't aware of this when I framed the floor for my 12'x24' shop.  I actually came up at about 47" face width after installation but I made sure I had good engagement of the tongue and groove with a sledge and 2x4 "cushion" against the grooved edge of the sheet and was going for no gap.  I ended up having to scab a filler strip in under the walls on each side to account for the loss in width.

[Redoverfarm]

dogneck just reading over the post.  If you haven't already laid the Advantex I thought I would mention that the manufacturers recommend that you use the Polyethlene glue rather than regular construction adhesive.  You can get it where the regular adhesives are.  Not that much more in $$.