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Posted by Chas Hurst on October 4, 2006, 1:41 pm
> You'd think that, wouldn't ya?
>
> However, if you nail it tight and it gets wet, the wood will try to swell.
> If it has room, it will expand in the gap you left around the edges. If
> you left no edge, it will expand anyway, raising the seam, and probably
> delaminating the sheets.
>
> Then you call the supplier to complain of this horrible product he shipped
> and demand that it be replaced. So he sends the rep to your jobsite and
> thirty seconds later the rep shows you the stamp on the panel that says to
> maintain 1/8" gap.
>
> After the rep leaves, you learn how difficult it is to remove screwed and
> glued sheets of subflooring.
>
> Therefore, although it may "defeat the purpose," I follow the instructions
> as much as possible.
>
> Shannon Pate
The last floor (and only floor) I put down was 3/4 T&G ply and I followed
the lead of TOH and butted it up tight. I nailed it down with ring shanks
and after 3 years there's no problems. I waited till the building was
completely closed so the floor has never got wet.
>> Having a gap on T&G subfloor kinda defeats the purpose of using T&G,
>> don't it?
>>
>>> Place a 2x4 flat along the "hammer" side of the OSB. Hit the 2x4 with a
>>> sledgehammer. Take care not to get overly aggressive with your
>>> hammering. Most subfloor panels specify 1/8" gap at all sides for
>>> expansion.
>>>
>>> Shannon Pate
>>>
>>>> I'm installing 1 3/4 t&g osb for a basment floor on 2x4 sleepers. This
>>>> is my first subfloor project.
>>>>
>>>> How do I get the tongue of one 4x8 sheet to mesh with the groove in the
>>>> adjoining one? Pushing doesn't seem to do it (although I found out
>>>> that construction glue is really, really sticky), and hammering just
>>>> smashes the hammered side. Kicking it didn't work.
>>>>
>>>> I'm wishing for something like a come-along that would PULL the two
>>>> sheets together, but I have no idea if such a thing exists.
>>>>
>>>> I'm doing this myself, so I'm wondering if the normal method is to have
>>>> several beefy guys just lean into each sheet to make it snap in. If
>>>> so, the damn book neglected to mention that in the "needed tools" list!
>>>>
>>>> Maybe use a hydraulic jack to push, & a 6' 2x4 along the edge?
>>>>
>>>
>>>
>>
>>
>
>
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