Answer :
Final Answer:
The purpose of a cant strip is to prevent the roof membrane from cracking at a change in direction, providing a smooth transition and protecting the roofing material from damage or stress points. Cant strips do not provide a curb for a skylight or replace a reglet as the counter-flashing seal, but they can help seal the top of a parapet wall to prevent water infiltration.
Explanation:
A cant strip is a roofing material designed to prevent the roof membrane from cracking or being damaged at changes in direction, such as at the intersection of a flat roof and an adjacent wall or parapet. When roofs meet walls or other surfaces at angles, they can create stress points where the roofing material may be vulnerable to damage due to movement or changes in temperature. Cant strips are typically triangular in shape and are installed at these junctures to provide a smooth transition and to redirect water away from these areas, preventing potential cracks or damage to the roofing membrane 1.
Cant strips do not provide a curb for a skylight. The curb for a skylight is a separate, raised frame that surrounds the skylight to keep it above the roof surface. A cant strip serves a different purpose in roofing construction 2.
A cant strip also does not replace a reglet as the counter-flashing seal. A reglet is a groove or channel cut into a wall or other surface to secure flashing or counter-flashing, which prevents water infiltration. It serves a different function than a cant strip 3.
In some cases, a cant strip can be used to help seal the top of a parapet wall. Parapet walls are short walls at the edge of a roof, and they can be susceptible to water infiltration. A cant strip can be installed at the top of a parapet wall to redirect water and help prevent cracking or damage to the roof membrane 4.
In summary, a cant strip primarily serves to prevent roof membrane cracking at changes in direction, making it an essential component in roofing to maintain the integrity of the roofing system.
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