TORCHSEAL DESCRIPTION
BITUMAT TORCHSEAL is a uniquely formulated prefabricated waterproofing membrane with a special multilayered design for superior pliability, tensile strength, workability and resistance to elements.
The multilayered design consists of a spunbonded polyester core coated on both sides with APP modified bitumen. The polyester core gives the membrane high tensile strength, elongation and superior lap joint strength.
Properly installed, BITUMAT TORCHSEAL forms an impervious, permanently flexible waterproof blanket which accepts normal structural movement without breaking or cracking.
USES
BITUMAT TORCHSEAL membranes are ideal for a wide range of waterproofing applications, including roofs, reservoirs, basements, tunnels and car parks. BITUMAT TORCHSEAL may be utilized in exposed and covered applications.
OUTSTANDING FEATURES
- Total impermeability
- Excellent resistance to aging and weathering
- Outstanding bondability and seam integrity
- Stability at high temperatures
- Very high resistance to impact & puncture
- Simple, single-layer installation reduces labour & errors
- Variety of finishes for exposed and covered applications
GENERAL DATA
Nominal Weight: 3, 4 or 5 kg/M2
Nominal Thickness: 3, 4 or 5 mm
Nominal Roll Size: 1 x 10 Mts.
Reinforcement: Robust, isotropic, spunbonded, nonwoven polyester core.
FINISHES
BITUMAT TORCHSEAL is available in three basic finishes:
- Black smooth finish with polyethylene surfaces for covered applications.
- Granule surfacing for exposed applications.
- Fine sanded upper surface for coated systems.
QUALITY CONTROL
In addition to stringent regular tests by BITUMAT laboratory, our products are tested periodically by Independent Laboratories.
STANDARDS
BITUMAT TORCHSEAL complies with the performance requirements and tolerance levels of the listed standards. Some of which modified to better suit the various climatic conditions around the world. 1. American Society for Testing and Material ASTM D 6222 Type I. 2. European Union of Technical Agreement (UEAtc) 3. Canadian General Standard Board (CGSB 37-GP 56M - July 1980). 4. German Standard (DIN 52133).
INSTALLATION TOOLS REQUIRED
- Gas torch
- Knife
- Trowel
- Measuring tape
- Marking string
- Gloves
APPLICATION
BITUMAT TORCHSEAL is installed by torch welding method, loose-laid or fully bonded to substrate. When loose-laid, only overlaps are bonded together. Peripheres , protrusions and other flashing details are installed according to specifications.
COVERAGE RATE (Approx.)
(Rate may vary as per site requirement)
Flat areas: 1.15 M2/M2 per layer with 10 cm. side laps and 15 cm. end laps.
Base flashing: 100x35 cms. with 15 cm. end laps, 0.40 M2/ linear M
Average wastage : 3 - 5%
TORCHING GUIDELINES
The underside of the membrane should be torched just enough to superficially melt the bitumen. Excessive heating may damage the reinforcement. Overlaps should be re-heated from the top and re-sealed with a trowel to ensure seam integrity. For details of installation methods and flashing requirements, consult the relevant BITUMAT Systems Design and Installation Manual.
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