BULLDOG® #196 Modified Bitumen Adhesive – Trowel Grade

Modified bitumen adhesive trowel grade products are built for roofing applications where strong adhesion, controlled placement, and reliable lap bonding matter. BULLDOG® #196 Modified Bitumen Adhesive – Trowel Grade is a polymer-modified, cold-process asphalt adhesive designed for SBS modified bitumen single-ply membranes, especially on vertical surfaces and flashing details.

Built for SBS Modified Bitumen Membranes

BULLDOG® #196 is formulated as a trowel-grade adhesive for SBS modified bitumen single-ply membranes. Its adhesive qualities provide excellent substrate adhesion and strong lap bonds, helping roofing contractors secure membrane details where performance depends on proper bonding and application control.

This product is intended for professional roofing contractors using generally accepted roofing practices. In the field, that matters. Modified bitumen work is detail-heavy, and a trowel-grade adhesive gives contractors the control they need around flashings, parapet walls, laps, and repair areas.

Recommended Uses

BULLDOG® #196 Modified Bitumen Adhesive – Trowel Grade is used as a cold-process adhesive to adhere SBS modified bitumen single-ply membranes to vertical surfaces. It may also be used as a roof repair cement on asphalt, metal, and modified bitumen surfaces.

• Adhering SBS modified bitumen single-ply membranes
• Vertical modified bitumen membrane applications
• Flashing work
• Parapet wall details
• Strong lap bond applications
• Roof repair cement for asphalt surfaces
• Roof repair cement for metal surfaces
• Roof repair cement for modified bitumen surfaces

Application Guidelines

Apply BULLDOG® #196 with a trowel to flashings at approximately 1/8-inch thickness. The surface must be sound, dry, and dirt-free before application. Use precut and relaxed membrane strips no longer than 15 to 20 feet.

Allow a minimum of 3-inch side laps and 6-inch end laps. Embed the membrane while the adhesive is wet and allow adhesive to bleed through the laps. Mechanical fastening with a termination bar is recommended for added securement.

Parapet walls should be primed with BULLDOG Asphalt Primer and allowed to dry for approximately 24 hours before applying the modified bitumen adhesive. Cover air intakes before applying and while the product cures.

Important Use Limitations

Do not use BULLDOG® #196 with modified bitumen single-ply membranes that have polyethylene or other backing. Always read the container label and follow any cautionary statements and instructions provided by the modified bitumen membrane manufacturer.

Because this product is designed for professional roofing use, proper surface preparation, membrane handling, lap layout, fastening, and application thickness all matter. The adhesive can do the heavy lifting only when the crew gives it a clean, dry, properly prepared surface to work with.

Performance Characteristics

BULLDOG® #196 meets ASTM D 4586, Type I, Class I. It has a service temperature range of -30°F to +150°F and forms an outside shell in approximately 2 days at the recommended application rate.

When applied at a rate of 13 square feet per gallon without absorption, the dry film thickness is approximately 77 mils. The product shows no sagging or blistering at 60°C according to ASTM D 4586 and no cracking or separation at 0°C according to ASTM D 4586.

BULLDOG® #196 has approximately 74% nonvolatile matter by weight, 26% volatile solvent by weight, 16% mineral filler and/or other stabilizers by weight, and a net weight of approximately 8.7 pounds per gallon.

Available Container Size

• 5-gallon pail

Cleanup and Handling

Clean tools with mineral spirits or #99 BULLDOG Asphalt Remover. BULLDOG® #196 contains petroleum solvents and should be used with proper ventilation, protective gloves, eye protection, and safe handling practices. Keep away from heat, sparks, open flames, and hot surfaces. Follow all label instructions and safety data sheet guidance before use.

Why Choose BULLDOG® #196?

BULLDOG® #196 Modified Bitumen Adhesive – Trowel Grade gives roofing professionals a polymer-modified, cold-process adhesive for SBS modified bitumen membrane details, vertical surfaces, flashing work, and roof repairs. With ASTM D 4586 Type I Class I compliance, strong substrate adhesion, strong lap bond performance, and trowel-grade control, it is a serious adhesive for serious roof work.