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Old 08-08-2011, 02:05 PM   #1
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T&G Flooring Bubbling


An engineered wood T&G floating floor was installed in basement 90 days ago. We dont have water leakage in the room, but a 3" length in one area and also a smaller area bubbled up, about 1 inch vertical in the worst places. This occurred about July 1. I think it started getting humid here ( > boston) -- maybe my imagination. But its been bubbled about 4 weeks.

So today I guessed where the floor was pressing against a wall and chiseled out a 1/8th inch x 2 inch section of floor - doesn't look like anything improved.

So I guess the question is... how do you pinpoint the problem area, and is expansion the only possible cause?

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Old 08-08-2011, 03:14 PM   #2
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T&G Flooring Bubbling


What was the floor installed on?

Was the floor installed leaving a gap around the walls to allow for expansion?

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Old 08-08-2011, 03:22 PM   #3
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T&G Flooring Bubbling


Installed on cement.
Technically I dont know what/if any gaps were made anywhere but refer to sentence # 3 below.

I did not install it. All footage of room except the 1 ft I exposed is covered with molding. The part I exposed had a gap.

Question: just by looking at the floor and where bubbling occurs, ... how can you tell where the absence of a gap or deficiency in a gap's size might be located?
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Old 08-08-2011, 03:29 PM   #4
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T&G Flooring Bubbling


when you say bubbling do you mean the flooring has bubbled or that the flooring is raised up along a seem ?

is it engineered hardwood or a laminate?

Last edited by CountryCare; 08-08-2011 at 03:34 PM.
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Old 08-08-2011, 03:38 PM   #5
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T&G Flooring Bubbling


The wood flooring.. more correctly said... has buckled, not bubbled. In 2 spots.. with a non-buckled are between. As you look left or right along the board length from the buckled areas the buckling diminishes, eventually to flat.
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Old 08-08-2011, 03:42 PM   #6
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Are these two areas close to a wall or more to the middle of the room?
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Old 08-08-2011, 03:47 PM   #7
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T&G Flooring Bubbling


Neither. Ha. Here's why...

It's a square room but has a small " L " [a cheap bar] like coming 5' out from the wall with a 1 - ft wide end. The major buckling occurs about 1 foot in front and 2 ft to the left and right of the L's end.

The buckled area's proximity the " L " is why I guessed the problem was at the L. And I figure it only takes 1 inch to set off a buckling effect. Am I right here?

But I guess generally you could say buckling is not near the walls.

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Old 08-08-2011, 04:03 PM   #8
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if its near the L that would lead me to believe that they didnt gap it probably and when it was installed there was little humidity and then when the humidity rose it expanded and buckled because of no gap at the L but that would be an educated guess.
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Old 08-08-2011, 04:09 PM   #9
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When I opened up this 1 ft length there was 1/8 in gap across it, except for 2 inches which touched the wall. I opened up the gap.. and I bought a de-humdifier. Buckling still present, and the same amt.
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Old 08-10-2011, 03:12 PM   #10
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What method would you use to cut wood off the floor pieces?
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Old 08-14-2011, 01:37 AM   #11
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It may not go back down. The buckling can ruin the joints.
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Old 08-14-2011, 10:33 AM   #12
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it went back down on its own. i bought a toe kick saw just the day before. i will use it today to cut off about 3/8 inch. on lengths and some of the side boards. def ambient humidity-related.

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