ASTM International

Standard Specification for Self-Adhering Polymer Modified Bituminous Sheet Materials Used as Steep Roofing Underlayment for Ice Dam Protection
 N D1970/D1970M

Annotation

This specification covers polymer modified bituminous sheet materials intended for use as underlayment on roof eaves, or valleys, or both, to prevent leakage of shingle, tile, or metal roofs from water back-up due to ice dams

These underlayment sheets have a sticky adhesive layer which is exposed by removal of a protective sheet. The top surface is suitable to work on during the application of the exposed roofing

The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use

Автоматический перевод:

Стандартная спецификация для полимера самособлюдения измененные битумные материалы листа, используемые в качестве крутой кровли Underlayment для ледяной защиты дамбы

Эта спецификация покрывает измененные битумные материалы листа полимера, предназначенные для использования в качестве underlayment на карнизе крыши, или долинах, или обоих, для предотвращения утечки гальки, мозаики или металлических крыш от водного резервного копирования из-за ледяных дамб