BTM Elastobit
Waterproofing Products
BTM Elastobit
BTM Elastobit is a waterproofing membrane with a glass-fiber or polyester felt carrier, manufactured from bitumen modified with SBS
(styrene-butadiene-styrene), featuring a PE (polyethylene) film on the underside and either a PE (polyethylene) film
or colored granule coating on the upper surface. It offers high elasticity and is applied using a torch
or hot asphalt. BTM can manufacture 10 different versions of the Elastobit membrane with different technical properties.
ADVANTAGES
It provides the superior flexibility and low-temperature performance of SBS-modified bitumen.
It can be bonded using a torch or hot asphalt.
AREAS OF USE
-On terrace roofs of buildings,
-On sloped concrete roofs,
-BTM Waterproofing Membrane Elastobit is used on retaining walls and foundations to provide waterproofing and moisture protection.
-BTM Waterproofing Membrane Elastobit can be used as an underlay membrane on lightweight metal roofs or prefabricated roofs.
-Designed for cold climates, BTM Waterproofing Membrane Elastobit can be used as an underlay or intermediate-layer membrane in waterproofing applications on any surface requiring flexibility.
-Used for waterproofing pressurized and non-pressurized groundwater or surface water.
SURFACE PREPARATION
The surface on which BTM Waterproofing Membrane Elastobit will be applied must be free of dust, dirt, rust, and
oil, and loose particles must be removed. Depending on the application surface, where necessary, BTM liquid-applied waterproofing
material BTS 100 or BTM liquid-applied BTR 100 primer should be applied to the application surface,
and it should be allowed to dry completely.
APPLICATION METHOD
If the surfaces to be waterproofed are concrete, they must be finished with a wood-float-finished sloped screed,
and must be clean and dry. Before applying BTM Waterproofing Membrane Elastobit,
bituminous solution primer BTS 100 (TS103) or bituminous emulsion primer BTR 100
(TS113) must be applied to the surface and allowed to dry. Depending on the slope of the substrate, application of BTM Waterproofing Membrane Elastobit
should begin from the lower elevation and proceed toward the higher elevation. BTM Elastobit
is heated with a torch flame and bonded to the surface. The rows must always be staggered.
For the 1-meter-wide short-edge overlaps of the membrane, a 15 cm overlap should be provided, while the long-edge
overlaps should have a minimum 10 cm overlap, and a roller should be used to bond the joints. Between layers, a 50 cm
stagger should be maintained on the short edge and 5 m on the long edge.
•Bituminous membrane applications must be carried out by certified application teams.
•Application should not be carried out at temperatures of +5 oC or below during winter months.
•If application is to be carried out in cold weather, membrane rolls must be stored for at least 24 hours before application in enclosed
areas with a temperature above 5 oC, and the membranes brought to the application site must be applied immediately. Failure to comply with this rule may result in
cracks forming on the membrane surface.
•When unrolling membrane rolls at the application site for alignment purposes, they should be unrolled slowly and carefully.
•Applied waterproofing layers must be protected against impacts/mechanical damage.
PACKAGING
BTM Waterproofing Membrane Elastobit is supplied in rolls measuring 1 m in width and 10 m in length.