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bitumen can be asphalt or coal-tar pitch. The bitumen of choice for waterproofing is coal-tar pitch (ASTM D-450, Type I or II) because of its self-healing properties. Organic felts are preferred over glass. Asphalt (ASTM D-449) has greater water absorption than coal-tar pitch and is not suitable. The felt plies can be shingled or
The outerwrap systems of coal-tar saturated asbestos felt and coal-tar saturated mineral felt were deleted. 6283, FAX (303) 795-1440, or write to the department at 6666 W. Quincy Ave., Denver, CO 80235. Methods for Sampling and Testing. Bitumen-Saturated Felts and Woven Fabrics for Roofing and Waterproofing.
TarFelt. ®. - BS. Hessian Based Bituminous Waterproofing Membrane. Description. TarFelt® - BS consists of a centre core of hessian adequately coated on both sides with oxidized bituminous compound. Mica / sand is then spread over on both faces to prevent inter-sticking of layers. Characteristics. Breaking Strength, kg
work above grade, where asphalt will be exposed to sunlight. B. Coal-Tar: ASTM D450, Type II. SPEC WRITER NOTE: In cases where waterproofing must be applied to concrete or masonry walls in waterlogged soils or where some settlement is likely to occur, it may be advisable to use the fabric type instead of the felt type.
D 727 Test Method for Kerosine Number of Roofing and. Flooring Felt by the Vacuum Method6. D 1557 Test Method for Laboratory Compaction Character- istics of Soil Using Modified Effort (56 000 ft-lbf/ft3(2,700. kN-m/m3))5. D 2822 Specification for Asphalt Roof Cement4. D 4022 Specification for Coal Tar Roof Cement,
Compatible for top coating with. SuperSilverShield (aluminium finish with. UV resistance properties) or ShaliCryl 215. (Aesthetic look in standard colours) for non-trafficable roofs. 9. Page 10. www.stp ltd.com. Click icon to add clip art. TarFelt LM Ideal for waterproofing & protecting Asbestos / GI sheets and renovation of Old
BH. Hessian Based Bituminous Waterproofing Membrane. Description. TarFelt® BH, is produced by saturating centre core of hessian with straight grade bitumen and coated with specially formulated bituminous compound on both sides. Thereafter, Mica / sand is spread over bituminous surface to prevent inter layer sticking
specification writer in preparing a sys- tem to suit various needs when using. BITEC products as roofing membrane write letters stating that we have reviewed plans, details, and/or specifications, and find the condi- .. of roofing and waterproofing require- ments. LET BITEC. SHOW YOU HOW. BITEC sponsors many
Waterproofing in. /Old construction. Report no.RDSO/WKS/2015/1. January – 2015. Works Directorate dk;Z funs"kky;. Design and Standards Organization, improving or if any error/ discrepancy is noticed in its contents, kindly write to the Hessian based tar felt is the most common product for water proofing on the.
Forty years back hessian reinforced bituminous felt was introduced in the construction industry and over a period of time term tarfelt became generic name in the industry for all oxidised bituminous felts. However with the advancement of technology replacement of hessian as reinforcement material was imminent as it was
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