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Norcross Permalayer is an anti-fracture underlay, used beneath ceramic, porcelain and natural stone tiles to protect the tiled finish from damaging movement stresses which may occur in the background under the tiles.
Designed for use over timber as well as green (i.e. minimum 48 hours old) concretes and screeds, Nocross Permalayer is ideal for bridging cracks in the substrate up to 3mm wide, preventing the cracks from transferring through to the tiled finish. Permalayer enables the substrate beneath to move laterally, protecting the tiled finish from the detrimental effects of subfloor movement. A solid bed can also be achieved due to the flat nature of the underlay eliminating the problems associated with point loading.Permalayer is easy to install and adds only 2mm to the floor height as in comparison to the 15-18mm required for plywood overlays. Due its design, Permalayer uses upto 50% less adhesive than other brands making it the most cost effective option for floor prep/insulation.
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