Pre-apply polymer self-adhesive film waterproof membrane is a multi-layer andcomposite
waterproof membrane which involves: high performance PE film, apressure-sensitive polymer
adhesive layer and a granuled layer.
This kind of membrane is designed for the pre-apply waterproof parts of the buildings,and
can make the membrane bond with the concrete firmly.
This kind of membrane can be used on smooth concrete surface or rigid sandy soilsurface,
also used on the vertical sides of the waterproof works; can well bond with thefollowing up
grouted concrete together, this will form a durable waterproof with theconcrete.
Apply to underground waterproof works, tunnel, basement, culvert etc; especially usedin the
methane-leakage resistance works.
This kind of membrane can bond with the concrete seamlessly and permanently, and
preventthe water leakage and penetration around the chink I gap of the membranes.
No need to make the protective layer; no need to pre-coat primer and make angles of
chamfer;immediate walk 1 step on the waterproof membrane allowed.
Working can be done over -4 degree Celsius, easy trimming on the gape 1 edge 1 end
ofdetailing parts, and ensure watertight waterproof effect.
As per standard under GB/T 23457-2009
Working Key Points
The surface of the substrate should be smooth, clean and rigid; no crack, no hole; if there
existschip/chink/gap, the width should be no more than 12mm, necessary repairing is
The horizontal substrate should be a complete concrete or a high density granular
stuffingsandy soil base; loose aggregate or sharp-edged aggregate are prohibited; multi-
angular sandsor stone grains are suitable rather than beveled / concave-convex shape;
working on the wetsubstrate is workable, but ensure no ponding existing.
Vertical board: to use concrete or 19mm composite board pile as the support to
themembrane; each and every board should connect with each other closely, the deviation
shouldbe less than 12mm.
Membrane installed: position the overlap precisely, and guarantee continuous
waterproofingadhibiting and no missing; in case working at a low temperature, proper
heating or torching onthe overlap parts required.