Green roof installers partnering with Sika Sarnafil are. The single-source warranty is available for 5, 10, 15, and 20 year periods. Under this program, customers access a single contact for support, regardless of the issue, and a single warranty covers the green roof assembly. Sika Sarnafil has established partnerships with leading full-service green roof installers and can provide customers with the advantages of a 'single source' project delivery solution, backed by a 'single source' Sika Sarnafil warranty that includes the vegetated cover and the Sarnafil waterproofing system. Allows the designer to create slope in the roof assembly.Insulation will not float since it is under the waterproofing membrane.Insulation is protected from the elements.The Sarnafil G 476 waterproofing membrane is installed over the hardboard.īoth XPS and isocyanurate insulation are available in tapered designs to enhance drainage.Īfter the Sarnafil G 476 is installed, it is covered by a drainage composite followed by the vegetated cover. However, since isocyanurate foam is typically manufactured with a 20 or 25 psi compressive strength, rigid hardboard should be installed over the isocyanurate insulation to protect it from damage and potential long-term creep from the weight of the vegetated cover. The benefit is it does not require a thermal barrier. Rigid isocyanurate foam insulation may be used in this configuration. A separation felt is installed over the XPS prior to installing the waterproofing membrane. Local building codes usually require the installation of a rigid, fire-tested thermal barrier over the metal deck prior to installing the XPS insulation board. It is available in 40 psi, 60 psi, and 100 psi compressive strengths so it will not crush during construction or under load after placement of the vegetated cover.

The rigid insulation material is typically extruded polystyrene (XPS), which is resistant to moisture absorption and has been used in green roof applications for decades. The most common design approach over a metal deck is to build a ‘conventional’ loose-laid roof assembly under the vegetated cover. Improved applicator productivity and job site safety.Conforms to minor surface irregularities and mitigates water migration under the sheet.Robust, factory-manufactured composite sheet.It can also be used on certain renovation projects where the old waterproofing system can be removed, or where a new concrete topping slab is placed over the structural deck. Sarnafil G 476 SA is best suited for new construction. Sarnafil G 476 SA also doesn’t require hot asphalt kettles or flammable adhesives, improving worker and job site safety. This ‘all-in-one’ product increases applicator productivity and helps keep the project on schedule. The integration of G 476 membrane with a foam backing layer and pressure sensitive adhesive eliminates the need for a field installed separation layer and adhesives. The pressure sensitive adhesive provides a tenacious bond to the substrate mitigating potential water migration under the membrane. The flexible foam backing layer conforms to minor irregularities in the substrate and provides a cushion for the G476 waterproofing membrane. G 476 SA provides peace of mind for specifiers and owners who value the benefits of an adhered system and thermoplastic technology. Sarnafil G 476 SA combines the time-tested, proven performance of Sarnafil G 476 waterproofing membrane with the added security of an adhered sheet system. The foam backing is factory-coated with a pressure sensitive adhesive and is protected by a plastic release liner which is removed during installation. The system uses the robust Sarnafil G 476 Self-Adhered (SA) membrane – a composite sheet comprised of the heat-weldable G 476 waterproofing membrane with a closed-cell foam backing. When your building demands absolute system integrity with maximum watertight security, Sika Sarnafil’s self-adhered waterproofing system is for you. Induction Welded Roofing System (RhinoBond)Įnvironmental Product Declarations (EPDs)

Patina green steel roof