Insul-Joint Expansion Joint 3/16 In White - All Sizes Size:3.5 In x 50 ft (13 Rolls) Landmark offers algae-resistant (AR) shingles

Landmark offers algae-resistant (AR) shingles that help protect against dark or black discoloration

R-Value: R-30

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with a self-built curb with flashing

Insul-Joint Expansion Joint 3/16 In White - All Sizes Size:3.5 In x 50 ft (13 Rolls) Landmark offers algae-resistant (AR) shinglesInsul Joint is a closed cell (non crosslink) polyethylene expansion joint filler designed to prevent cracks and breaks during concrete expansion and contraction. Insul Joint can be used in all standard concrete construction, such as floor slabs, driveways, sidewalks, parking garages, highways and runways. Insul Joint is extruded from high quality closed cell polyethylene foam. Technical Specification: ASTM D 4819 Standard Specification for Flexible