Description

This bulletin outlines the elements for achieving a successful asphalt shingle roof.

Scope

This bulletin covers:

• composition
• design and selection criteria - including roof pitch, roof weight, wind exposure, size and coverage, durability and servicability, climate, exposure and weatherproofing and roof space/cavity ventilation
• installation method - including storage, substructure, drip edges, underlay, laying procedure, fixings ridges and hips, valleys and flashings
• maintanance.