Noble Curbs save time by replacing lath and mortar to create a tileable surface. They are made from high density expanded polystyrene and coated with an acrylic polymer. Curb overlays are installed over a waterproofing membrane and stacked 2 x 4's and provide a watertight, tileable surface on shower thresholds. Solid curbs are thin-set and replace 2 x 4's.
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