IKO Perforated Sand Underlay is a perforated venting underlay which is sand finished on both surfaces. This product is loose laid to provide an economical, controlled partial bond to a substrate, when the subsequent layer is fully bonded in hot bitumen.
IKO 3H Perforated Venting 20m
Roll Weight 34.5kg; Length 8m; Width 1m
Product Finish: Perforated Sand
Installation Method: Pour & Roll