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ROOFING
CHAPTER 8. ROOFING INSPECTION GUIDE
8.1 DEFINITIONS:
Roofing System - an assembly of interacting components designed to weatherproof, and
normally to insulate, a building's top surface. Normally from above the ceiling of the
top floor or the ceiling of an attic to the top most surface of the facility
Test Cuts - destructive tests used to determine primarily the composition of the roofing
system, conformance with specification, i.e., bitumen weights, and condition. Normally
test cuts are limited in number and therefore are not a complete indication of the condi-
tion of a roof structure.
Infrared Thermography - is a non-destructive method of inspecting roofs. The equip-
ment can be hand-held or used from an aircraft, to determine heat retained by wet in-
sulation.
Nuclear moisture surveys - Nuclear moisture surveys require a minimum of core
samples be taken to verify moisture content. They are non-destructive tests used to
determine the condition of roof insulation. A nuclear moisture survey can detect mois-
ture in a roof which could contribute to leaks and rapid deterioration of the roof
Trusses - includes all types of building trusses that are normally designed for the express
purpose of supporting roof loads as well as ceilings where applicable. All lateral and
vertical bracing and ties between trusses are included
8.2 ROOFING INSPECTION INSTRUCTIONS:
8.2.1 Asphalt strip shingled roof: Check for:
n Flashings - Pay particular attention to the flashing around penetrations or
between roofs of different ages. Check for:
l Missing sections
l Rust
l Damage
n Valleys:
Punctures
Weathering
8-l








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