Flex TPO Для дома - Manual (Page 8)

Existing Single Ply Roof Membranes: If the existing membrane is
to be left in place it must be cut into sections no larger than 100 square
feet per each section. All flashing must be removed at the perimeter
edge, roof drains and roof penetrations.
Gravel-Surfaced Built Up Roofing: The loose gravel must be
removed either by vacuuming or power brooming. The surface must
be leveled to prevent the insulation or recover board from bridging.
All Projects: The substrate must be smooth and relatively even
without high spots or depressions. Any accumulated water, ice, or
snow must be removed to prevent the absorption of moisture in the
new roofing components and roofing system. The substrate shall be
clean and free from debris and any other foreign material.
Placing Flex fan-fold GreenGuard re-cover board
Vapor or Air Barrier Installation
Install the barrier in accordance with the manufacturer’s written instructions
and the project specifications for the installation of the specified product.
Wood Blocking
Install wood blocking as indicated by the project specifications and in
accordance with current Flex Details and Specifications. Blocking is always
required at roof edges and roof penetrations. The wood blocking
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