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GAF Unisil HS 5 Gallon White

$273.90
In stock
SKU
891410920

Help protect your low-slope roof from damages caused by ponding water with Unisil HS II silicone roof coating. Unisil HS II provides excellent long term weathering as well as ultraviolet and biological resistance and unlike acrylics, won’t chalk. Formulated with pure silicone polymers that make it naturally fire retardant. Unisil HS II also offers a tight finish that resists algae, mildew and mold. Unisil HS II is versatile enough to be used on a variety of roof substrates and is available in reflective, cool colors that help reduce energy costs.

Why United Coatings™ Unisil HS II Roof Coating?

United Coatings™ Unisil HS II Roof Coating provides superior weatherproofing, ultraviolet resistance, and biological resistance over polyurethane foam insulation and other appropriate substrates. Its pure silicone polymers are naturally fire resistant.

Benefits

Benefits of United Coatings™ Unisil HS II Roof Coating include:
  • 100% silicone elastomeric roof coating
  • Helps protect against leaks caused by ponding water
  • Ideal for flat roofs
  • Can be applied to EPDM, granulated asphalt, Hypalon,®, metal, PVC, aged TPO and structural concrete
  • Is also effective over SPF insulated concrete, metal, plywood, ambient and hot tanks
  • Resistance to weathering from sub-zero temperatures to high heat; no deleterious effects on coating after 5,000 hours of continuous exposure
  • CRRC Rated, FM Approved, UL Classified, Miami-Dade County Product Control approved, and ENERGY STAR® certified (White only; U.S. only)
  • Low VOC, UL rated 790 class A fire testing
  • Can be applied by roller, brush, or airless sprayer
  • Can be applied with 1-coat application
  • Up to a 20-year Limited Warranty (See Warranty for details)
Specifications (All Dimensions are Nominal)
Solids by Weight92% [ASTM D2697]
Solids by Volume84% [ASTM D1644]
Tensile Strength228 PSI (1.57 MPa) [ASTM D2370]
Elongation169% [ASTM D2370]
Elongation at Break210% (+10%) at 0°F (-17°C) [ASTM D412]
Permeance10.7 Perm [ASTM E96]
Low-Temperature FlexibilityPasses 180° flex over 1/2" (12.7 mm) mandrel at -15°F (-26°C) [ASTM D522]
ColorsWhite
VOC<50 g/L [ASTM D3960]
Resistance to Accelerated WeatheringPass; no cracking or checking after 5,000 hours [ASTM G154]
Application Temperature (Air, Surface)Air: 40°F and rising; Surfaced: 40°F – 110°F (4°C – 43°C)
Application Rate3 gallon-per-minute (11 L/minute) output and 3,500 psi (24,138 kPa) pressure capability, fed with 5:1 transfer pumps.
Application MethodAirless Sprayer
Drying Time (70°F, 50% RH)5 hrs.
Thermal EmittanceInitial: 0.90
Tear Resistance16 PLI [ASTM D624]
Solar ReflectanceInitial: 0.89
Initial SRI113
Solids by Weight: 92% [ASTM D2697]
Solids by Volume: 84% [ASTM D1644]
Tensile Strength: 228 PSI (1.57 MPa) [ASTM D2370]
Elongation: 169% [ASTM D2370]
Elongation at Break: 210% (+10%) at 0°F (-17°C) [ASTM D412]
Permeance: 10.7 Perm [ASTM E96]
Low-Temperature Flexibility: Passes 180° flex over 1/2" (12.7 mm) mandrel at -15°F (-26°C) [ASTM D522]
Colors: White
VOC: <50 g/L [ASTM D3960]
Resistance to Accelerated Weathering: Pass; no cracking or checking after 5,000 hours [ASTM G154]
Application Temperature (Air, Surface): Air: 40°F and rising; Surfaced: 40°F – 110°F (4°C – 43°C)
Application Rate: 3 gallon-per-minute (11 L/minute) output and 3,500 psi (24,138 kPa) pressure capability, fed with 5:1 transfer pumps.
Application Method: Airless Sprayer
Drying Time (70°F, 50% RH): 5 hrs.
Thermal Emittance: Initial: 0.90
Tear Resistance: 16 PLI [ASTM D624]
Solar Reflectance: Initial: 0.89
Initial SRI: 113
Codes
FBCState of Florida Approved
FMFM Approved
NSFNSF Protocol P151 Health Effects from Rainwater Catchment System Components
FBC: State of Florida Approved
FM: FM Approved
NSF: NSF Protocol P151 Health Effects from Rainwater Catchment System Components
Energy Rating
CRRCCRRC rated
LEED® Credit for ReflectanceCan contribute
Title 24 (California Energy Commission)Can be used to comply with Title 24 cool roof requirements.
CRRC: CRRC rated
LEED® Credit for Reflectance: Can contribute
Title 24 (California Energy Commission): Can be used to comply with Title 24 cool roof requirements.
Shipping and Packaging
Pail5-gallon (18.9 liter)
Drum50-gallon (189 liter)
Shelf Life12 months 40°F – 90°F (4°C – 32°C)
Pail: 5-gallon (18.9 liter)
Drum: 50-gallon (189 liter)
Shelf Life: 12 months 40°F – 90°F (4°C – 32°C)

Data Sheets

Technical Bulletins

Technical Information

Details (By Roof Area)

Brochures

Codes

Warranty - Guarantee

Safety Data Sheets (SDS)

Specifications

  • GAF Roofing | A Guide to a Proper Adhesion Test
     
    GAF Roofing | A Guide to a Proper Adhesion Test
    We are GAF. (https://www.gaf.com) More homes and businesses in the U.S. are protected by a GAF roof than by any other product. We are the leading roofing manufacturer in North America, with plants strategically located across the U.S. For over a century, we have manufactured and sold a wide variety of high-performing residential and commercial roofing products including Timberline, North America's best-selling roof shingle. People trust GAF to protect what matters most in their daily lives.
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