UNDERLAY NEXT SELF

Self-adhesive non-reinforced SBS-modified bitumen membrane UNDERLAY NEXT SELF is used as an underlay on pitched roofs with continuous rigid wood decking (OSB-3, plywood, tongue or groove planks). The use of self-adhesive underlay membranes is mandatory in zones of valleys and eaves as these areas are most prone to leakages.

The top side of the material is covered with a strong multilayer polypropylene fabric that prevents applicators from slipping from the pitched roof. A high-performance self-adhesive bitumen compound on the bottom side provides maximum reliability and eliminates the need for the application of adhesive mastic on overlaps. The self-adhesive binder is covered with an easy-removable protective film.

Waterproofing material UNDERLAY NEXT SELF has the following advantages:

• Sticks well to its' top surface and does not require the use of adhesive mastic on transverse and longitudinal overlaps;
• Additional strength is granted by multilayer polypropylene fabric that also prevents applicators from slipping from the pitched roof;
• The lightweight of the membrane simplifies the transportation and installation;
• Installation of the membrane takes minimum time and does not require any additional equipment and skills;
• Safe and cheap application – the membrane is applied without the use of gas and flame;
• The high-quality polymer-bitumen compound has the property of self-healing, which grants absolute tightness in places of nail penetration;
• Special marking lines on the fabric make the following installation of the roofing shingles easier;
• High repairability.

Product technical data