BULLDOG® SECUREFLASH® Rubberized Flashing Cement #79AF

BULLDOG SECUREFLASH #79AF is a chemically modified roof flashing cement reinforced with select polymers for wet or dry roof repair applications. Manufactured by Palmer Asphalt Company, this rubberized flashing cement is designed for strong adhesion, high elongation and recovery, and reliable performance where roof leaks, flashing cracks, roof protrusions, and repair details need attention.

BULLDOG® SECUREFLASH® #79AF is a multipurpose roof cement that can be used on asphalt and metal surfaces, SBS modified bitumen membranes, roof flashings, roof protrusions, and shingle tab cement applications. Its polymer-reinforced formulation provides an unusually high percentage of elongation and recovery, helping the repair area maintain flexibility as roof surfaces expand, contract, and move over time.

What BULLDOG® SECUREFLASH® #79AF Is Used For

BULLDOG® SECUREFLASH® #79AF is designed for roof repair situations where adhesion, flexibility, and wet-or-dry surface performance matter. It may be used to repair leaks on asphalt and metal surfaces, repair and adhere SBS modified bitumen membranes, repair cracks in flashings, prevent leaks around roof protrusions, and serve as a shingle tab cement.

This makes BULLDOG® SECUREFLASH® #79AF a strong option for contractors, property managers, facility teams, distributors, and building owners looking for a rubberized flashing cement that can handle multiple roof repair conditions. From flashing details to roof penetrations, this product supports practical repair work where water intrusion can quickly become a bigger problem.

BULLDOG® SECUREFLASH® #79AF is not intended for use on coal tar, EPDM, or other single-ply roofs. Before selecting this product, confirm that the existing roof surface is compatible with asphalt-based roof cement and review the official Product Data Sheet and Safety Data Sheet.

Common Applications

• Wet surface roof repair
• Dry surface roof repair
• Asphalt roof leak repair
• Metal roof leak repair
• SBS modified bitumen membrane repair
• SBS modified bitumen membrane adhesion
• Flashing crack repair
• Roof protrusion leak prevention
• Shingle tab cement applications
• Rubberized flashing repair
• Multipurpose roof cement applications
• Emergency roof leak control where wet surfaces are present

Key Features and Benefits

BULLDOG® SECUREFLASH® #79AF is built for repair conditions that demand more than standard roof cement. Its chemically modified formulation and select polymer reinforcement help improve flexibility, elongation, and recovery, making it useful for roof areas that experience movement, weather exposure, and recurring leak risks.

• Rubberized flashing cement: Designed for wet or dry roof repair applications.
• Polymer-reinforced formula: Contains significant polymers that support high elongation and recovery.
• Superior wet surface adhesion: Formulated with a trade secret ingredient that supports adhesion to wet surfaces when tested in accordance with ASTM D3409.
• Multi-surface repair use: Can be used on asphalt and metal surfaces.
• SBS modified bitumen compatibility: May be used to repair and adhere SBS modified bitumen membranes.
• Flashing repair performance: Helps repair cracks in flashings and reduce leak risks around roof details.
• Roof protrusion protection: Can help prevent leaks around protrusions where roof systems are often vulnerable.
• Shingle tab cement use: May be used as a shingle tab cement where appropriate.
• ASTM specification: Meets ASTM D4586, Type I, Class I and II.

Recommended Surfaces

BULLDOG® SECUREFLASH® #79AF may be used on asphalt surfaces and metal surfaces. It is also suitable for repairing and adhering SBS modified bitumen membranes. Its wet-or-dry application profile makes it useful when roof repair work cannot wait for fully dry conditions.

This product should not be used on coal tar, EPDM, or other single-ply roofs. When there is uncertainty about roof surface compatibility, users should confirm the existing roof system before application or request guidance from Palmer Asphalt.

Application Guidance

Before applying BULLDOG® SECUREFLASH® #79AF, remove all loose dirt, grease, oils, and other surface contaminants. Proper surface preparation helps improve contact between the roof cement and the repair surface. Apply the product uniformly by trowel.

For dry surfaces, apply BULLDOG® SECUREFLASH® #79AF at a thickness of approximately 1/8 inch to 1/4 inch. For wet surfaces, apply at a thickness of approximately 1/4 inch or heavier if needed to stop the leak. Use pressure during application to ensure a firm bond between the product and the repair surface.

Air intakes should be covered before applying the product and while the product is curing. This is especially important on occupied buildings because vapors, fumes, or odors may migrate through air intakes, open windows, doors, or other building openings.

Coverage, Dry Time, and Performance Notes

At a recommended application rate of 1/8 inch thickness, one gallon of BULLDOG® SECUREFLASH® #79AF covers approximately 13 square feet. When applied at this rate, the product has a listed dry film thickness of approximately 77 mils.

The dry time at the recommended application rate is approximately 2 days for the outside shell. Service temperature is listed from -30°F to +150°F, supporting use across a broad range of roof repair and maintenance conditions.

Typical physical characteristics include 75% nonvolatile matter by weight, 25% volatile solvent by weight, 20% mineral filler and/or stabilizers by weight, 0.05% water content by volume, and a net weight of 8.5 pounds per gallon. The product also lists a minimum flash point of 104°F according to ASTM D93.

BULLDOG® SECUREFLASH® #79AF is listed as having no sagging or blistering at 60°C under ASTM D4586 and no cracking or separation at 0°C under ASTM D4586. It also lists minimum elongation of 270% at 73°F, supporting its use as a rubberized roof flashing cement where movement and flexibility are important.

Specifications

• Product Number: #79AF
• Product Type: Rubberized flashing cement for wet or dry surfaces
• Category: Roof Cements
• Application Method: Trowel
• Recommended Dry Surface Thickness: Approximately 1/8 inch to 1/4 inch
• Recommended Wet Surface Thickness: Approximately 1/4 inch or heavier if needed to stop leak
• Coverage: Approximately 13 square feet per gallon at 1/8 inch thickness
• Dry Time: Approximately 2 days for outside shell
• Service Temperature: -30°F to +150°F
• Elongation: 270% minimum at 73°F
• ASTM Specification: ASTM D4586, Type I, Class I and II

Available Container Sizes

BULLDOG® SECUREFLASH® #79AF is available in multiple job-site sizes for roof repair, flashing maintenance, and leak control applications.

• 3-gallon pail
• 5-gallon pail
• Cartridges, 12 per carton

Storage, Handling, and Safety Summary

BULLDOG® SECUREFLASH® #79AF should be used with adequate ventilation and handled according to the official Safety Data Sheet. The SDS identifies the product as a flammable liquid and vapor. It may cause skin irritation, serious eye irritation, an allergic skin reaction, and health effects through prolonged or repeated exposure.

Users should keep this product away from heat, sparks, open flames, hot surfaces, and other ignition sources. Do not smoke near the product. Protective gloves, eye protection, and face protection should be worn when handling or applying the material.

Avoid breathing dust, fumes, gas, mist, vapors, or spray. Avoid contact with eyes, skin, and clothing. Contaminated work clothing should not be allowed out of the workplace and should be washed before reuse. If skin irritation or rash occurs, or if eye irritation persists, seek medical attention.

Store containers tightly closed in a cool, dry, well-ventilated area. Keep the product away from direct sunlight, strong oxidizing agents, heat, sparks, and flame. Empty containers may retain residue and vapor, so they should not be cut, welded, drilled, ground, pressurized, or exposed to ignition sources.

Environmental and Disposal Notes

The Safety Data Sheet identifies BULLDOG® SECUREFLASH® #79AF as toxic to aquatic life with long lasting effects. Avoid release to the environment and do not allow spills to enter drains, sewers, or waterways. Spills should be contained with sand, earth, or other suitable absorbent material and handled in accordance with applicable regulations.

Dispose of contents and containers in accordance with local, state, and federal regulations. Empty containers should be handled carefully because residue and vapors may remain even after the container appears empty.

Cleanup

Tools may be cleaned with mineral spirits or #99 BULLDOG® Asphalt Remover. Cleanup should be completed with proper ventilation, skin protection, and safe handling practices. Always follow the product label, Product Data Sheet, Safety Data Sheet, and applicable job-site safety requirements.

Why Choose Palmer Asphalt and BULLDOG® Roof Products?

Palmer Asphalt Company has served the roofing industry since 1932 with roof cements, asphalt roof coatings, primers, adhesives, and specialty roofing products under the BULLDOG® name. BULLDOG® SECUREFLASH® #79AF reflects that practical roofing legacy with a rubberized, polymer-reinforced flashing cement designed for demanding repair conditions.

For contractors, distributors, facility managers, and property owners, BULLDOG® roof cements provide dependable options for roof repair, flashing maintenance, leak response, and roof restoration planning. With clear product documentation and support from Palmer Asphalt, users can make better decisions when selecting a roof cement, roof coating, primer, or complete roof restoration system.

Need Help Choosing the Right BULLDOG® Product?

Every roof repair has its own conditions. Surface type, roof age, moisture exposure, flashing condition, weather, existing roof materials, and long-term maintenance goals all affect which product should be used. Palmer Asphalt can help property owners, facility managers, and contractors evaluate roof conditions and identify the right BULLDOG® product for the job.

Request a Free Roof Analysis to get guidance on your roof repair needs and identify the right Palmer Asphalt or BULLDOG® solution for the project.

Frequently Asked Questions

What is BULLDOG® SECUREFLASH® #79AF used for?

BULLDOG® SECUREFLASH® #79AF is used for wet or dry roof repair, flashing repair, asphalt roof leak repair, metal roof leak repair, SBS modified bitumen membrane repair, roof protrusion leak prevention, and shingle tab cement applications.

Can BULLDOG® SECUREFLASH® #79AF be applied to wet surfaces?

Yes. BULLDOG® SECUREFLASH® #79AF is designed for wet or dry surfaces. For wet surfaces, apply at approximately 1/4 inch thick or heavier if needed to stop the leak, using pressure to ensure a firm bond.

What surfaces can this rubberized flashing cement be used on?

BULLDOG® SECUREFLASH® #79AF may be used on asphalt and metal surfaces. It may also be used to repair and adhere SBS modified bitumen membranes.

Can this product be used on EPDM or single-ply roofs?

No. BULLDOG® SECUREFLASH® #79AF is not intended for use on coal tar, EPDM, or other single-ply roofs.

How much area does one gallon cover?

One gallon covers approximately 13 square feet when applied at 1/8 inch thickness.

How long does BULLDOG® SECUREFLASH® #79AF take to dry?

The dry time at the recommended application rate is approximately 2 days for the outside shell.

What ASTM specification applies to this product?

BULLDOG® SECUREFLASH® #79AF meets ASTM D4586, Type I, Class I and II.

What makes this product different from standard flashing cement?

BULLDOG® SECUREFLASH® #79AF is chemically modified and reinforced with select polymers. It provides high elongation and recovery, making it useful for roof areas that experience movement, moisture, and repair stress.

What safety precautions should be followed?

Users should wear protective gloves, eye protection, and face protection, use the product with adequate ventilation, avoid breathing mist or vapors, and keep the product away from heat, sparks, open flames, and hot surfaces. Always review the full Safety Data Sheet before use.

Can Palmer Asphalt help select the right roof repair product?

Yes. Palmer Asphalt offers a Free Roof Analysis to help property owners, contractors, and facility managers identify the right BULLDOG® roof repair or roof coating product for the project.