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GacoBase Pail
Roofing

GacoBase U95

A Sustainable, Cost-Effective Alternative for Encapsulating Built-Up Gravel Roofs

GacoBase U95 is a two-component urethane maintenance base coat that streamlines roof restoration across many substrates. As a result, you can restore more roofs with less labor and lower material costs—all without sacrificing performance.

In addition, GacoBase forms a tough, durable film that protects foam substrates and blocks oil migration on asphalt roofs. Because of this, you no longer need bleed-blocking primers. Furthermore, the coating extends the life of aged asphaltic, single-ply, BUR, and previously coated roof systems.

For easy application, you can brush or roll GacoBase directly over existing single-ply systems. Plus, it carries UL and FM approvals for roof maintenance coatings. Once applied, it’s ready for a top coat in as little as 4 hours, which saves valuable time on the job.

Beyond performance, GacoBase also advances sustainability. Made with renewable castor oil, it provides a USDA bio-preferred alternative to petroleum-based roofing materials. In doing so, it reduces reliance on fossil fuels and supports eco-friendly building practices. Finally, the formula is low VOC and compliant in all 50 states.

Built-Up Gravel Roof Encapsulation

For built-up gravel roofs, first remove loose aggregate with vacuum equipment. Next, flood coat GacoBase to encapsulate about 75% of the remaining embedded gravel. As a result, the surface becomes properly prepared for a GacoFlex top coat. Finally, apply urethane, silicone, or acrylic to meet the specific needs of the building, location, and durability requirements.

Remember to put Gaco’s premium solutions to work for you. Gaco coatings are backed by industry-leading warranties*, international expertise, and a team of in-market experts who are local to you. At Gaco, we believe there’s a difference between just any solution and the right solution. You deserve the right solution and Gaco’s team of experts will help you find it! Find GacoBase U95 near you or contact your local Gaco Area Manager with questions.

Benefits

VERSATILE APPLICATION: Can be rolled or brushed as the base coat for any GacoFlex coating chemistry.

USDA BIO-PREFERRED FORMULATION: A renewable castor-oil base offers a sustainable base coat alternative to spray polyurethane foam over built-up gravel roof systems.

GREAT DURABILITY: High Tensile Strength and impact/abrasion resistance, ideal for frequently trafficked roofs, decks and impact-prone areas.

BACKED BY GACO: Up to 20-year warranty in roof coating applications.

Details

  • 1-year shelf life
  • 5-gallon kits available
  • Part of a multi-layer system with aromatic base coats and an aliphatic topcoat (as needed)
  • Colored Gray
  • UL and FM approvals for roof maintenance coating
  • USDA Bio-preferred
  • Full system warranties require installation by a Gaco Licensed Applicator
  • Material Warranty available
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GacoFlex U95 Sell Sheet June 2nd, 2025 Product: GacoBase U95 Brochure
TG-U95U92-10 - GACOFLEX™ GACOBASE U95 & GACOFLEX U92 ROOF COATING FOR TAR AND GRAVEL ROOFING MEMBRANE ASSEMBLIES May 13th, 2025 Product: GacoBase U95 Specifications
TG-U95S42-10 - GACOFLEX™ GACOBASE U95 & GACOFLEX S42 ROOF COATING FOR TAR AND GRAVEL ROOFING MEMBRANE ASSEMBLIES May 13th, 2025 Product: GacoBase U95 Specifications
GacoBase U95 - TWO-COMPONENT URETHANE BASE COATING May 13th, 2025 Product: GacoBase U95 Product Data Sheets
Gaco Safety Data Sheet (SDS) - Alternate Access April 2nd, 2024 Product: Gaco 052N Safety Data Sheets