• All-in-One Kit: Covers both gap filling and surface flashing needs in one convenient bundle.
• Advanced STPE Technology: Provides flexible, high-performance adhesion without primers.
• Wide Substrate Compatibility: Bonds to OSB, plywood, metal, concrete, CMU, gypsum, ICF, and more.
• Damp Surface Application: Both products can be applied on dry or damp surfaces.
• Bridges Gaps up to ¾”: Gap Filler seals seams and voids between dissimilar materials.
• UV Resistant: Both products can be exposed to sunlight for up to 9 months.
• Low VOC & Solvent-Free: Safer for installers and environmentally conscious jobsites.
• Fire-Rated: Class A surface burning rating for added safety.
• Durable & Flexible: Resists cracking and maintains elasticity over time.
• No Mixing or Primer Needed: Both products are ready-to-use out of the tube.

• Window and Door Flashing
• Rough Opening Prep
• Sealing Sheet Membrane Edges
• Bridging Dissimilar Materials
• Top Termination Seals
• Air and Moisture Barrier Detailing

Common Substrates:

• OSB and plywood sheathing (untreated)
• Concrete
• CMU block
• Metal (aluminum, steel)
• ICF (Insulated Concrete Forms)
• Gypsum sheathing

Surface Preparation:

• Clean surfaces of dust, dirt, and debris using a stiff brush and damp cloth.
• Ensure a positive slope at sill if required by window manufacturer.

Gap Filling (BB GF):

• Fill voids, joints, cracks, and dissimilar material seams up to ¾".
• Smooth with a trowel or dampened finger.

Flashing (BB LF):

• Apply BB LF in a serpentine bead around the window or door opening.
• Use a trowel or putty knife to spread to 25 mils wet thickness, ensuring full coverage over the sheathing and substrate.

Cure Time: Allow ~30 minutes before installing window or door. Product may still be tacky but should not stick to the finger.

Final Sealing: Apply BB LF over window flanges (top and sides) after installation. Do not flash the sill flange to allow for proper moisture drainage.