Shield Your Roof from Leaks with GACO Elastomeric Roof Coating

GACO Elastomeric Roof Coating delivers industry-leading waterproofing performance by forming a seamless, super-flexible membrane that stands up to ponding water, extreme temperature swings, and UV degradation. Whether you’re looking to extend the life of a commercial flat roof or reinforce a residential low-slope system, GACO Elastomeric Roof Coating offers unmatched elongation, adhesion, and durability to keep your building dry and energy-efficient for years to come.


Why Choose GACO Elastomeric Roof Coating?

  • Superior Ponding-Water Resistance
    GACO’s patented formulation resists softening or breakdown when water collects on the roof surface, preventing corrosion and substrate damage in low-slope areas.

  • Extreme Elasticity
    With elongation values exceeding 400%, the coating stretches to bridge hairline cracks and contracts back without tearing—ideal for substrates subject to thermal cycling.

  • Strong Adhesion
    Bonds tenaciously to clean, dry surfaces—including metal, concrete, modified bitumen, and BUR—often without the need for a separate primer coat.

  • UV and Mildew Protection
    Engineered UV stabilizers and anti-microbial additives preserve reflectivity, inhibit mold growth, and guard against chalking and color fade over time.


Key Benefits

  1. Leak Prevention & Sealant Performance
    Forms a monolithic layer that fills and bridges micro-fissures, stopping leaks at their source before moisture can penetrate the roofing assembly.

  2. Energy Savings
    Available in bright white and reflective formulations to deflect solar heat, helping to cut cooling costs and reduce rooftop temperatures by up to 50°F.

  3. Extended Roof Life
    A high-performance topcoat can add 10–15 years of service to an aging roof, delaying costly tear-offs and structural repairs.

  4. Low Maintenance & Easy Repairs
    Smooth, washable surface resists dirt buildup; periodic recoat cycles refresh the waterproof barrier without full removal.


Application Best Practices

  • Thorough Surface Preparation
    Pressure-wash to remove dirt, chalk, grease, and loose coatings. Repair any large blisters or buckled seams prior to coating.

  • Ideal Weather Conditions
    Apply when temperatures are above 50°F (10°C) and humidity is below 85%, with no rain expected for 24–48 hours after application.

  • Two-Coat System
    Apply a first “bond” coat at approximately 20–25 mils wet-film thickness; allow 4–6 hours to cure. Follow with a second full waterproofing coat.

  • Coverage Rates
    Plan for about 1.5–2 gallons per 100 sq. ft. total (across both coats), adjusting for surface texture and porosity.


Is GACO Elastomeric Roof Coating Right for Your Project?

Choose GACO Elastomeric Roof Coating if you need a proven, professional-grade solution for:

  • Roofs prone to standing water

  • Buildings in climates with wide temperature swings

  • Structures requiring long-term UV and mildew resistance

  • Cost-effective roof life extension without full replacement

Consult a certified GACO applicator to evaluate substrate conditions and determine the optimal coating thickness and system components for your specific roof.


Invest in one of the most trusted names in roofing protection. With GACO Elastomeric Roof Coating, you get a high-performance sealant that defends against leaks, lowers energy bills, and keeps your roof looking and performing its best for years to come.

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