Which of the following standards applies to asphalt saturated felt underlayment?

The correct answer encompasses the idea that all the listed standards can be relevant to asphalt saturated felt underlayment, as they each pertain to varying aspects of performance, material specifications, and testing methods for roofing products, specifically underlayment types.

ASTM D4869-03 addresses the standard specification for asphalt-saturated organic felt underlayment used for roofing. This standard outlines materials and construction details ensuring that this type of underlayment meets certain durability and performance criteria.

ASTM D6757-02 pertains to the specification for self-adhering polymer modified bituminous sheet materials used as underlayment for roofing. While this standard focuses on a slightly different type of underlayment, it is still relevant as it can apply to the overall category of asphalt-based underlayments used in roofing systems.

ASTM D226-979 specifies the requirements for asphalt-saturated organic felt, including material properties necessary for effective use as underlayment. This standard is crucial as it ensures the performance characteristics meet the needs for weather resistance and structural support in a roofing system.

Overall, the presence of all these standards reflects the comprehensive approach to assessing the quality and suitability of various types of asphalt underlayment materials in roofing applications, making the response to include