Sika Sarnafil says it new self-adhered membrane can cut installation times in half and removes the need for the use of adhesives on site.
The company says one of it self-adhered hot air weldable roof membrane – Sarnafil G410 FSA – combines all the traditional and proven advantages of a Sarnafil membrane with fast and easy installation, thanks to a strong self-adhered attachment method.
Instant adhesion means time and money can be saved by installers, specifiers and building owners due to a quick turnaround and shorter times on site.
This multi layer synthetic roofing membrane is a premium quality polyvinyl chloride (PVC) material with an inlay of glass non-woven for dimensional stability and self-adhesive polyester fleece backing. The membrane contains ultraviolet light stabilisers, which assist weathering in direct exposure and is flame retardant. It is also prepared with an uncoated welding edge to ensure that a strong welding seam is achieved in the overlap.
Suitable for new construction and refurbishment projects on smooth substrates and with no built in stress at the time of production, the membrane is also a dimensionally stable product.
Installation of the new system follows an ‘align, peel, stick and seal’ approach. The membrane is rolled out and aligned before the release liner is peeled off and, using a brush or squeegee to prevent blisters, the membrane is adhered to the substrate. To fully press down the membrane, it is recommended that a water-filled or steel roller be used. An appropriate primer must also be used together with the recommended substrate material. Sika Sarnafil says this application method of provides instant wind uplift resistance through the self-adhesive backing.
Its lacquer coated surface means Sarnafil self-adhered membrane maintains its aesthetic appearance for a long time and comes with the company’s guarantees. In addition, the new membrane is BBA-certified in excess of 40 years.
Prior to its launch the new self-adhered roofing membrane was trialled with a number of contractors. The speed of installation and reduction of time on site to complete the project was noted by many during the field trials, as was the adhesion strength.
Stuart Harding, contracts manager at RLW Roofing who attended the product launch, said: “From the launch day demonstration and our involvement with the field trials, we have been extremely impressed with the quality, the ease of installation and the end finish of the Sarnafil self-adhered membrane. We can see this membrane offering unique opportunities on projects requiring a fully-adhered roofing system where the ease of installation and reduction of COSHH (Control of Substances Hazardous to Health) hazards will be of great benefit.”
