Answer :
Final answer:
The installation of GAF Leak Barrier does not require Shingle-Mate beneath it at roof penetrations; instead, it is applied directly to the roof deck in these areas for extra leak protection, and Shingle-Mate is used over the rest of the roof deck.
Explanation:
The question is regarding the installation of roofing materials on a home. It asks whether Shingle-Mate should be installed under GAF Leak Barrier at all roof penetrations. The answer is false. The GAF Leak Barrier products are designed to be installed directly on the roof deck, around areas prone to leaks such as roof penetrations, and then Shingle-Mate (or other GAF roof deck protection) is installed over the rest of the roof deck. The Leak Barrier provides an extra layer of protection in vulnerable areas before the installation of the shingles, while Shingle-Mate provides a uniform surface on which to lay the shingles and helps protect the roof structure from moisture.
