Bitumen Membrane Sikabit W 15, Packaging Size: 1.0 M X 20 M Rolls, Powder

Product Details

Wet-applied, modified bitumen waterproofing membraneDESCRIPTION SikaBit® W-15 is a double-sided modified bitumen waterproofing membrane for wet-application. It consists of a cross-laminated PE film and two modified bitumen layers covered with silver release liners. USES SikaBit® W-15 is designed for non-exposed waterproofing application such as: ▪ Foundations ▪ Basement slabs and walls ▪ Podium slabs ▪ Concealed roofs CHARACTERISTICS / ADVANTAGES ▪ Safe, easy and fast installation ▪ No need for special equipment ▪ Direct application on wet substrate ▪ Excellent initial and long term adhesion ▪ Full surface bonding ▪ Zero water underflow ▪ Crack-bridging ability ▪ High tear resistance ▪ High puncture resistance ▪ Resistant to chemical corrosion APPROVALS / STANDARDS GB/T 23457-2009 Pre-applied and wet installed waterproof sheets ▪ ▪ Singapore Green Label (in process) ▪ TTJ 276-2000 Salt Water TestAPPLICATION INSTRUCTIONS APPLICATION METHOD / TOOLS PRE-Application This method applies for waterproofing below foundations and base slabs. Prior to the installation of SikaBit® W-15, a layer of very smooth and solid cement concrete is required as a substrate. No standing water is allowed. SikaBit® W-15 is then unrolled and aligned. The long edges of the membrane are overlapped by min. 80 mm and firmly pressed together using a roller. The short edges of the membrane are overlapped in the same way. The overlaps need to be staggered. After removal of the release liner a modified cement concrete screed is applied to all horizontal areas. POST-Application This method applies for waterproofing of walls, podium slabs and concealed roofs. Prior to the installation of SikaBit® W-15 the concrete needs to be saturated by water (use water hose). Any protrusions need to be removed and the concrete surface needs to be cleaned. A bonding adhesive SikaBit® W-1 (with approximate of 2–3 kg/m2) is applied to the substrate. Then the SikaBit® W-15 membrane is unrolled and pressed into the fresh adhesive after removal of the release liner. The long edges of the membrane are overlapped by min. 80 mm and firmly pressed together using a roller. The short edges of the membrane are overlapped in the same way. The overlaps need to be staggered. Details See method statement SikaBit® W System for detailing of corners, penetrations, construction joints, pile heads etcIMPORTANT CONSIDERATIONS Apply at temperatures above +15 °C only. SikaBit® W-15 is not UV-stabilized and shall not be used on structures where it is permanently exposed to weathering. The installed SikaBit® W-15 shall be protected against mechanical damage with a suitable protective layer. It takes a about seven days for the bond strength between the membrane and the concrete substrate to fully develop. Manual testing of the bond-strength (cross-cut peel-off test) is recommended prior to backfilling especially in case of low ambient temperatures. BASIS OF PRODUCT DATA All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. LOCAL RESTRICTIONS Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields. ECOLOGY, HEALTH AND SAFETY For information and advice on the safe handling, storage and disposal of chemical products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.