Buildings today incorporate lighter-weight structural materials than those built years ago. Contemporary roofing systems should, therefore, have the ability to withstand the increased substrate movements and deflections. Durability of the roof can be assured through good planning and by the correct specification and installation of the waterproofing system.

Underwriters Laboratories, Inc.
TGFU.R11080

Factory Mutual Global Technologies LLC
FM Approval Guide Jan 2005 Vol3 Chptr 2 MBT
FM Approval Report 3028235

ICC REPORT LayfastSBS
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Warnock Hersey
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