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tomkk 02-16-2012 08:24 AM

Laminate floor installation
 
Does the season of the year have a bearing on the 1/4"-1/2" edge gap during installation?

The gap is, of course, intended to allow expansion of the floor but what if the temperature at installation is such that the laminate is already in it's expanded state? My concern is, if I install the flooring during the warm season when the laminate is in it's expanded state, it will contract out from under the moulding when winter makes the home cooler.

My installation requires 1/2" edge gap due to the room size. Quarter round moulding is only 5/8" wide so, if the contraction is more than 1/8" during the cooler season, it will leave a gap around the edge of the room due to contraction.

Appreciate any thoughts.

joecaption 02-16-2012 09:01 AM

May want to recheck that 1/2 gap figure. I've installed many brands and have never seen one that leaves that much.
A 1/4" gap on both ends would allow it to expand 1/2" along the whole length.
As long as the floorings been sitting in the room for about 48 hours uninstalled and the room is heated to the normal temperature you use it will be fine. Your over thinking this.

tomkk 02-16-2012 10:25 AM

Quote:

Originally Posted by joecaption (Post 854898)
May want to recheck that 1/2 gap figure. I've installed many brands and have never seen one that leaves that much.
A 1/4" gap on both ends would allow it to expand 1/2" along the whole length.
As long as the floorings been sitting in the room for about 48 hours uninstalled and the room is heated to the normal temperature you use it will be fine. Your over thinking this.

Thanks for the reply. I was working with 1/4" also but the Armstrong instructions say "If the room is wider than 26′ (7.92 m) but less than 52′ (15.85 m) in
plank width, a minimum of 1/2″ (12.7 mm) expansion zone." It surprised me, too, but that got me to thinking about the effect of contraction, rather than expansion, depending on the temp & humidity at the time of installation.

joecaption 02-16-2012 10:28 AM

1/4 plus 1/4 is a total of 1/2". Should be more then enough room by leaving 1/4 on each end.

tomkk 02-16-2012 10:48 AM

Quote:

Originally Posted by joecaption (Post 854978)
1/4 plus 1/4 is a total of 1/2". Should be more then enough room by leaving 1/4 on each end.

Thanks, that's different than the way I read it but makes sense.

Gary in WA 02-17-2012 02:50 PM

The gaps listed are for each side, not combined. Fig. 8, and 9, page 19.
Room size over 52’ board width requires ” expansion space at each side. Page 26; http://www.armstrong.com/pdbupimages/2127188114.pdf

Parallel to stair nosing varies from ”---1” depending on room size (planks), pp.: 32.
I must be reading a different product?


Gary

tomkk 02-17-2012 04:20 PM

Quote:

Originally Posted by GBR in WA (Post 855918)
The gaps listed are for each side, not combined. Fig. 8, and 9, page 19.
Room size over 52 board width requires expansion space at each side. Page 26; http://www.armstrong.com/pdbupimages/2127188114.pdf

Parallel to stair nosing varies from ---1 depending on room size (planks), pp.: 32.
I must be reading a different product?


Gary

Yeah, you're right. The 26' in plank width requirement on page 12 is the real problem but it does refer to the perimeter, as you said, not the sum of both sides.


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