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Old 02-16-2012, 08:24 AM   #1
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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.

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Old 02-16-2012, 09:01 AM   #2
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Laminate floor installation


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.

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Old 02-16-2012, 10:25 AM   #3
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Quote:
Originally Posted by joecaption View Post
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.
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Old 02-16-2012, 10:28 AM   #4
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Laminate floor installation


1/4 plus 1/4 is a total of 1/2". Should be more then enough room by leaving 1/4 on each end.
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Old 02-16-2012, 10:48 AM   #5
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Originally Posted by joecaption View Post
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.
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Old 02-17-2012, 02:50 PM   #6
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Laminate floor installation


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?


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Old 02-17-2012, 04:20 PM   #7
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Originally Posted by GBR in WA View Post
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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