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Roof-Master
Plus 221

Ultimate Rubberized Flashing Cement

Ultimate Rubberized Cement, Remains Flexible, Adds Extra Durability

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.

Coverage

Approximately 8 gallons per sq (per coat)

Cleanup Roof-Master Plus 221 Ultimate Rubberized Flashing Cement

Clean tools with Del-Val Orange Cleaner & Degreaser or mineral spirits, taking necessary precautions when handling combustible liquids.

Code Approvals / Compliance

This product meets or exceeds the requirements of ASTM 4586 Type I and ASTM D-3409

V.O.C. Less than 300 g/L

Precaution

DO NOT THIN. DO NOT HEAT CONTAINER. DO NOT store in an area where temperatures exceed 120°F.

Also Check out:

Roof-Master 220 All-Weather Flashing Cement in 5 Gallon Pail

Roof-Master 220

All-Weather Flashing Cement

Product Information

Sizes Available

10oz Capacity Caulk Tube
1 Gallon Capacity Pail
3 Gallon Capacity Pail
5 Gallon Capacity Pail

Tools Needed

Trowel Tool Graphic
Spackle Knife Tool Graphic

DATA SHEETS

Available From These Distributors

Click a logo to find a location close to you.

ABC Supply Co Distributor Logo
Beacon Roofing Supply Distributor Logo
J & L Building Materials Inc. Distributor Logo
New Castle Building Products Distributor Logo
Image of SRS Distribution's Logo
Universal Supply Co Distributor Logo
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