When your project demands absolute system integrity with maximum watertight security, Sika Sarnafil's self-adhered waterproofing system is for you. The system consists of the robust G 476 Self-Adhered (SA) membrane, a composite sheet comprised of Sarnafil G 476 waterproofing membrane with a closed-cell foam backing. The foam backing is factory-coated with a pressure sensitive adhesive and is perfect for new construction over concrete decks. It can also be used effectively on renovation projects where the old waterproofing system can be removed completely, or where a new concrete topping slab is placed over the structural deck.