Underlayment for clay roof tile shall comply with which standard?

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Multiple Choice

Underlayment for clay roof tile shall comply with which standard?

Explanation:
Underlayment for clay roof tile must comply with the standard for asphalt-saturated roofing felt used as a roof underlayment. This standard, ASTM D226, specifies the properties and requirements for felt underlayment—such as weight classifications, asphalt saturation, tear resistance, and dimensional stability—so it can reliably serve as a moisture barrier beneath tile and withstand installation and weather conditions. The other options cover materials or code areas unrelated to roofing felt underlayment, so they are not the applicable standard for this purpose.

Underlayment for clay roof tile must comply with the standard for asphalt-saturated roofing felt used as a roof underlayment. This standard, ASTM D226, specifies the properties and requirements for felt underlayment—such as weight classifications, asphalt saturation, tear resistance, and dimensional stability—so it can reliably serve as a moisture barrier beneath tile and withstand installation and weather conditions. The other options cover materials or code areas unrelated to roofing felt underlayment, so they are not the applicable standard for this purpose.

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