Polymer Modified Bitumen (SBS、APP)
Polymer Modified Bitumen waterproof membranes are composed of
reinforcing fabrics that serve as carriers for the hot
polymer-modified bitumen as it is manufactured into a roll
material. The kind roof systems typically are installed as a
two-ply system and almost always are fully adhered.
Surfacings for modified bitumen membranes include aggregate
surfacing, mineral surfacing, metal foil-laminate surfacing and
smooth liquid-applied surfacing.
Polymer modified bitumen or modified bitumen sheet membranes were
developed in Europe in the early 1960s and now have been widely in
use all over the world.
There are two types of modified bitumen waterproof membranes:
Styrene-Butadiene-Styrene(SBS) polymer-modified bitumen membranes
commonly are installed in hot moppings of asphalt or cold adhesive.
SBS is a rubber-type modifier that gives bitumen the ability to
stretch and resist damage, and improves its cold-temperature
flexibility. Some SBS modified membranes are self adhering; that
is, they contain an adhesive backing.
Polypropylene (APP) polymer-modified bitumen membranes typically
are heat-welded or torch-applied. APP is specially suitable for
high temperature and strong sunshine area.
Generally, APP modifiers impart a "plasticized" quality to asphalt,
and SBS modifiers impart a "rubberized" quality to asphalt.
KRS Modified Bitumen waterproof membranes are ideal choice for the
customer due to the following advantages.
Firstly Excellent durability and high strength. Glass-reinforced
polyester, combined with pinpoint asphalt/polymer blends, provides
puncture-resistant strength. The resulting elongation and recovery
characteristics also resist stress and enhance the roof’s long-term
Secondly Simple, economical installation. KRS Modified Bitumen
waterproof membranes can be installed without extra time or money,
thanks to installation options such as cold-applied adhesive; hot
asphalt; heat-welded; self-adhered base with heat-welded cap; and
mechanically attached base with heat-welded cap.
Thirdly Diverse choices for design freedom. KRS Modified Bitumen
waterproof membranes are available in both SBS and APP. Our careful
blending of polymers and asphalt results in a versatile product—
giving the architect, contractor and building owner the ability to
create a customized roofing solution.
At last Dependability in all applications. KRS Modified Bitumen
waterproof membranes are ideal in any situation, from new roofing
or reroof applications.