Most laminate flooring is installed as a 'floating floor' system, meaning it is not secured to the subfloor and requires room to move with temperature and humidity changes. A heavy, permanent fixture like a stone hearth can restrict this movement. If the laminate is pinned under such weight, the boards cannot expand, causing them to warp, buckle, or separate at the joints. It is generally recommended to install heavy stone hearths directly on the subfloor and finish the laminate transition up to the hearth edge.
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Can laminate handle the weight of a heavy stone fireplace hearth?
Laminate typically cannot support the weight of a heavy stone fireplace hearth directly if it is meant to float. Placing excessive, concentrated weight on a floating floor can pin it down, preventing necessary expansion and contraction, which can lead to buckling.