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.
Features and Benefits:
- Formerly BS 747 Type 3H
- British Standard glass-fibre based
- Economical roofing materials
Product Finish: Sand
Project Type: Commercial Small, Domestic Large, Domestic Medium, Domestic Small