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pjaj 10-29-2005 07:28 AM

Oak laminate flooring problem
In July I had oak laminate flooring installed throughout most of the ground floor of the 50 year old house we are renovating. The work was carried out by a firm of carpenters who are competent and have made a good job of other woodwork around the house. They have layed a lot of this flooring in new properties on my son-in-law's building site where there have been no problems.

The boards were layed over a mixture of concrete screed and old wood block according to the manufacturer's instructions. Vapour barrier underlay was used and expansion gaps were left at the edges.

The run of the boards is front to back and there is a transverse passage that runs from one end of the house to the lounge at the other end, so there must be about 100 boards side by side in the entire width. There is a large entrance hall in the middle of the house and the floor has developed a substantial hump (about 1 inch!) over 4-5 boards in the middle of it. It's like a trampoline.

I suspect that this is due to the onset of cooler, damper weather in the autumn. We are all at a loss as to exactly what has gone wrong and more importantly how to fix it with the least damage to the floor and the skirting boards. Any ideas from the flooring experts?

Further notes:

It's Wood-Engineered, 3-4mm oak / chip (particle) board interior / balancer veneer.

Some of the ground floor rooms had an old wood block floor (parquet) other areas have a concrete screed. The house has been extended twice in the past.

The underlay is rubber foam backed with aluminium foil DPM.

Bonus 10-29-2005 11:24 AM

I wonder if they left one or two of the spacers in against the wall? Pull the base where the hump is and see if the floor has enough room to move there.

pjaj 10-29-2005 12:17 PM


Originally Posted by Bonus
I wonder if they left one or two of the spacers in against the wall? Pull the base where the hump is and see if the floor has enough room to move there.

It's certainly a possibility, but the latest thoughts are that the flooring is jamed against a wall or doorway somewhere. The passage does have a dog-leg in it, although the problem does not manifest itself at that point. Or possibly the run is so long that the normal expansion allowance at either end is not enough.

Teetorbilt 10-29-2005 10:40 PM

I have been faced with this twice and the problem has always been the flooring installed too tightly as suggested by the former posters.

First, you should go back to whoever you bought the flooring from or the installers, if they are seperate entities. They should correct the problem. If they won't come back and we can discuss small claims court.

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