Import Astm D-226 15# Asphalt Waterproof Roofing Felt — Buy in Bulk from Supplier in China

ASTM D-226 15# asphalt waterproof roofing felt is a bituminous underlayment manufactured with a mat paper core saturated with asphalt, designed to provide a secondary moisture barrier beneath primary roofing materials. The listing specifies a width of 1 metre and a roll length of 40 metres, yielding 40 square metres of coverage per roll. The product is packaged in rolls on pallets, with a stated minimum order quantity of 1,000 rolls. The designation "15#" refers to the traditional weight classification of approximately 15 pounds per square (100 square feet), a standard reference in North American roofing specifications.

The mat paper substrate is saturated with oxidised asphalt to achieve water repellency and dimensional stability under thermal cycling. Standard industry practice for ASTM D-226 Type I felt requires a minimum tensile strength of 20 lbf/in in the machine direction and 10 lbf/in in the cross direction, though buyers should request certificates of analysis for the specific batch. The felt typically exhibits a permeance rating of 5 perms or less, classifying it as a vapour retarder rather than a vapour barrier. Saturant content, measured by extraction testing, generally falls between 150% and 250% by weight of the dry mat for this grade. Roll packaging on pallets facilitates mechanical handling; standard pallet configurations for roofing felt range from 40 to 60 rolls depending on roll diameter and core size.

Primary applications include underlayment for asphalt shingles, wood shakes, and metal roofing systems on slopes down to 2:12, as well as temporary weather protection during construction. Commercial buyers include roofing contractors, building material distributors, and construction firms serving residential and light commercial projects. The supplier mentions FOB and CIF shipping terms, with letter of credit and telegraphic transfer payment options. Buyers should confirm the specific port of export, as Cangzhou sits inland in Hebei Province, and verify whether delivery is ex-works or includes inland freight to Tianjin or another coastal port.

Cangzhou Jiansheng Building Waterproof Material Co., Ltd. is located in Wangsi Town, Nanpi County, Cangzhou City, Hebei Province, China, postal code 061000. The supplier's the platform profile carries a trust tier classification of "harbor" and an imported supplier tier, with a reported response rate of 0.00% and zero average response hours recorded. These response metrics indicate no documented reply activity on the platform, so buyers should establish direct communication channels before relying on the listing for time-sensitive procurement.

The company name specifies building waterproof materials as its product category, consistent with the ASTM D-226 roofing felt offered. The source description provided no information about factory size, year of establishment, production capacity, number of employees, revenue figures, or named clients. Buyers seeking to verify manufacturing credentials should request business licence documentation, ISO 9001 or ISO 14001 certificates if claimed, and factory audit reports directly from the supplier rather than assuming certification status.