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One of Most Popular Products!

Roof-Master
Plus 221

Ultimate Rubberized Flashing Cement

Ultimate Rubberized Cement, Remains Flexible, Adds Extra Durability

Image of Roof-Master Plus used to repair a skylight.

Description

Roof-Master Plus 221 Ultimate Rubberized Flashing Cement is a high grade SBS rubberized flashing cement manufactured using the highest quality chemical ingredients. Roof-Master Plus 221 Ultimate Rubberized Flashing Cement is soft, pliable cement that gradually hardens to a compound that is elastic, durable and resistant to water.

Ideal for sealing emergency leaks on both wet and dry roof surfaces and has excellent underwater adhesion.

Where to Use Roof-Master Plus 221 Ultimate Rubberized Flashing Cement

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Quick Application Guide

Min Mil Thickness

1/8″

Apply with Trowel

Larger Areas

1/4″–2″

Embed with Fabric

Coverage Rate

8 GAL

Per Square (Per Coat)

Uses

Specially formulated for use in damp, wet roofing situations. Roof Master Plus 221 Ultimate Rubberized Flashing Cement can be used as a heavy duty flashing cement for repairing flashings, asphalt shingles, built-up roofs, metal and masonry surfaces. Great for sealing leaks and openings at flashings (chimneys, vents, skylights, metal joints, gutters). DO NOT USE with EPDM, PVC, TPO or other single-ply membranes.

Preparation

Surface must be clean and free of dirt, dust, oil or grease and be free of any other foreign matter that would interfere with good adhesion. In colder climates we recommend storing the product at room temperature for 24 hours prior to application.

Application

Apply with a trowel or putty knife. Spread Roof Master Plus 221 to approximately 1/8” thickness and work thoroughly into the problem area. Repairing cracks and blisters: if the area is 1/4” wide to 2” long apply United Asphalt Cotton or Fiberglass Fabric for reinforcement, then cover with additional cement.