Posted by AzFred on July 14, 19104 at 09:13:12:
In Reply to: Leveling a sub floor? posted by Chris on July 14, 19104 at 08:56:05:
Flex of the flooring planks is not the issue. Laminate flooring is a veneer or overlay for the subfloor and mirrors the subfloor surface with a new face. If the floor is not flat enough, the assembly joints will open. The "FLATNESS" tolerance varies for different brands but "flat" must be measured at about 1/8" in 8'. Note that "flat" and "level" in this sense are different. Check the specific manufacturers installation and warrantee statements to ensure that you satisfy those requirements.
If you floor needs to be made more flat, a Self Leveling Cement or SLC can be applied prior to installing the laminate flooring planks.
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: I am trying to decide what to do with my flooring. It needs to be replaced in the hall and kitchen that connect, but the floor has settled over the main support beam of the house causing a high spot of 1/8 to 1/4 inch that runs half the length of the hall into the kitchen. I would like to put down laminate, but not sure if a concrete underlayment is not needed to level it out? Can laminates flex enough to compensate for the uneven floor? Any suggeation?