Info about two-layer parquet to the full-surface gluing are fabricated decks like parquet in a two-layer finished parquet elements with multiple bar or a bar. As carrier be plywood or turned this Nadelholz-of rare hardwood strips, or particle board and fibreboard used to deck. the layer of wood-based products is a grooved mostly from below cross with intervals of approx. 20 mm up to the upper class, so that the elements up to the adhesive on the base, which only generates a return, aufschusseln by its asymmetrical design not in length. A support of softwood these remain kept for the same reason often by aluminium bands at a distance. The choice of substrate or the middle layer has an important influence on the shrinkage behaviour of the finished parquet elements. Carriers or core out of chipboard and fibreboard, the swing in the longitudinal direction can lead to open head joints in wood flooring on underfloor, because the shrinkage at great lengths, often with little shrinkage mass of materials from Wood to clearly visible Spalten can result.
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