Ask the Expert: “Do the (fastener) guidelines in Tables 1A and 1B apply to the underlayment”

We had several “Ask the Expert” questions regarding underlayment fastening recently. Below are 2 questions from an attorney and responses from TRI President and Technical Director Rick Olson. Question #1 – “Do the guidelines in Tables 1A and 1B regarding “Attachment Type of Fasteners” that call for ¾ penetration apply to the underlayment?” Response – Table 1A …
from Tile Roofing Institute http://tileroofing.org/ask-the-expert-do-the-fastner-guidelines-in-tables-1a-and-1b-apply-to-the-underlayment/

from Tumblr http://scarletpoling.tumblr.com/post/139181945240