Manufacturer profile

GAF

🏢 Parsippany, New Jersey

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GAF, part of Standard Industries, is North America's largest roofing and waterproofing manufacturer. Its commercial liquid-applied line — built largely on the United Coatings brand acquired in 2011 — spans moisture-cure silicones (Unisil, High Solids Silicone), acrylic elastomerics, the fabric-reinforced HydroStop system, and companion primers, sold through commercial distributors with warranty terms tied to published application rates.

Product line

Coating products & published specs.

Unisil Silicone Roof Coating

Silicone

  • CoverageMax 1.5 gal/sq per coat, min 2 coats
  • Solids71% by volume
  • Film build23 / 31 / 40 dry mils for 10 / 15 / 20-yr warranty
  • Warranty10 / 15 / 20-year liquid-applied limited warranty by application rate
Full specs & data sheet

Application

Coverage: Max 1.5 gal/sq per coat, min 2 coats; warranty totals 2.0 (10-yr), 2.75 (15-yr), 3.5 (20-yr) gal/sq

Film build: 23 / 31 / 40 dry mils for 10 / 15 / 20-yr warranty

Physical properties

Solids: 71% by volume

  • Tensile 300 psi
  • elongation 550%
  • reflectance 0.83
  • SRI 104
  • ponding resistant
  • UL790 Class A

Warranty

10 / 15 / 20-year liquid-applied limited warranty by application rate

📄 Technical Data Sheet →

High Solids Silicone Roof Coating

Silicone

  • CoverageUp to 2.75 gal/sq in one pass (substrate permitting)
  • Solids96.6% by volume
  • Film buildPer GAF Liquid-Applied Roofing Manual
  • WarrantyGAF liquid-applied limited warranties
Full specs & data sheet

Application

Coverage: Up to 2.75 gal/sq in one pass (substrate permitting)

Film build: Per GAF Liquid-Applied Roofing Manual

Physical properties

Solids: 96.6% by volume

  • Tensile 299 psi
  • elongation 261%
  • reflectance 0.88
  • SRI 111
  • UL790 Class A
  • FM 4482
  • Miami-Dade

Warranty

GAF liquid-applied limited warranties; marketed with 20-yr terms

📄 Technical Data Sheet →

Acrylic Top Coat (Roof Mate)

Acrylic

  • Coverage1.0-1.5 gal/sq per coat
  • Solids53% by volume
  • Film build17.5 dry mils system minimum
  • WarrantyGAF acrylic system limited warranties
Full specs & data sheet

Application

Coverage: 1.0-1.5 gal/sq per coat; system min 2.0-3.0 gal/sq

Film build: 17.5 dry mils system minimum

Physical properties

Solids: 53% by volume

  • Tensile 284 psi
  • elongation 258%
  • reflectance 0.83
  • SRI 105
  • ENERGY STAR
  • ASTM D6083

Warranty

GAF acrylic system limited warranties

📄 Technical Data Sheet →

Premium Acrylic HydroStop Top Coat

Acrylic

  • CoverageMax 1.5 gal/sq per coat
  • Solids52% by volume
  • Film build33 / 37 dry mils for 10 / 15-yr warranty
  • Warranty10 / 15-year liquid-applied limited warranty
Full specs & data sheet

Application

Coverage: Max 1.5 gal/sq per coat; system 4.0 (10-yr) / 4.5 (15-yr) gal/sq

Film build: 33 / 37 dry mils for 10 / 15-yr warranty

Physical properties

Solids: 52% by volume

  • Tensile 207 psi
  • elongation 306%
  • tear 93 lbf/in
  • FM 4470 Severe Hail
  • ASTM D6083 Type I

Warranty

10 / 15-year liquid-applied limited warranty

📄 Technical Data Sheet →

Multi-Purpose Primer

Primer

  • Coverage0.25-1.3 gal/sq by substrate (metal 0.25-0.33
  • Solids42% by volume
  • WarrantyComponent of GAF coating systems
Full specs & data sheet

Application

Coverage: 0.25-1.3 gal/sq by substrate (metal 0.25-0.33; granulated asphalt 1.0-1.3)

Physical properties

Solids: 42% by volume

  • Two-part water-based epoxy
  • pot life ~2 hrs
  • topcoat within 48 hrs

Warranty

Component of GAF coating systems

📄 Technical Data Sheet →

Specs from published manufacturer data sheets — researched August 2026. Always confirm current specifications and pricing with the manufacturer or your distributor.

Warranty systems

Application rates by warranty term and substrate.

Quick specs on file: GAF High Solids Silicone Quick Spec — Metal (UH-1) · GAF High Solids Silicone Quick Spec — Aged PVC (UH-2) · GAF High Solids Silicone Quick Spec — Aged TPO (UH-10) · GAF High Solids Silicone Quick Spec — EPDM (UH-4) · GAF High Solids Silicone Quick Spec — Granulated Asphaltic (UH-6) · GAF High Solids Silicone Quick Spec — Smooth Asphaltic (UH-5) · GAF High Solids Silicone Quick Spec — Spray Polyurethane Foam (UH-9) · GAF Acrylic Quick Spec — Metal (LAR-1) · GAF Acrylic Quick Spec — Structural Concrete (LAR-8)

Unisil Silicone Roof Coating

Silicone71% volume solids

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
All approved substrates 10-year warranty 2 gal/sq (1 avg per coat) 2 23 mils — Per the Unisil data sheet, all approved substrates; Unisil quick specs not on file yet
15-year warranty 2.75 gal/sq (1.38 avg per coat) 2 31 mils — Per the Unisil data sheet
20-year warranty 3.5 gal/sq (1.17 avg per coat) 3 40 mils — Per the Unisil data sheet
Published warranty rates · Primer: GAF Multi-Purpose Primer: 0.25-0.33 gal/sq on metal, 0.66-1.0 gal/sq on smooth asphalt, 1.0-1.3 gal/sq on granulated asphaltData sheet →Estimate this system →

High Solids Silicone Roof Coating

Silicone96.6% volume solids

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
Metal 10-year warranty 1.5 gal/sq 1 23 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Metal (UH-1)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
15-year warranty 2 gal/sq 1 31 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Metal (UH-1)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
20-year warranty 2.5 gal/sq 1 39 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Metal (UH-1)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
PVC 10-year warranty 1.5 gal/sq 1 23 mils 0.33 gal/sq Multi-Purpose Primer 0.33 gal/sq (after Cleaning Concentrat… GAF High Solids Silicone Quick Spec — Aged PVC (UH-2)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
15-year warranty 2 gal/sq 1 31 mils 0.33 gal/sq Multi-Purpose Primer 0.33 gal/sq (after Cleaning Concentrat… GAF High Solids Silicone Quick Spec — Aged PVC (UH-2)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
20-year warranty 2.5 gal/sq 1 39 mils 0.33 gal/sq Multi-Purpose Primer 0.33 gal/sq (after Cleaning Concentrat… GAF High Solids Silicone Quick Spec — Aged PVC (UH-2)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
TPO 10-year warranty 1.5 gal/sq 1 23 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Aged TPO (UH-10)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; new TPO or under 2 PLI adhesion: contact GAF Design Services
15-year warranty 2 gal/sq 1 31 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Aged TPO (UH-10)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; new TPO or under 2 PLI adhesion: contact GAF Design Services
20-year warranty 2.5 gal/sq 1 39 mils See note No primer: Cleaning Concentrate (diluted) 0.5-0.7 gal/sq GAF High Solids Silicone Quick Spec — Aged TPO (UH-10)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; new TPO or under 2 PLI adhesion: contact GAF Design Services
EPDM 10-year warranty 1.5 gal/sq 1 23 mils 0.2 gal/sq EPDM Activator 0.20 gal/sq (plus Multi-Purpose Primer 0.33 … GAF High Solids Silicone Quick Spec — EPDM (UH-4)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
15-year warranty 2 gal/sq 1 31 mils 0.2 gal/sq EPDM Activator 0.20 gal/sq (plus Multi-Purpose Primer 0.33 … GAF High Solids Silicone Quick Spec — EPDM (UH-4)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
20-year warranty 2.5 gal/sq 1 39 mils 0.2 gal/sq EPDM Activator 0.20 gal/sq (plus Multi-Purpose Primer 0.33 … GAF High Solids Silicone Quick Spec — EPDM (UH-4)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
Granulated mod-bit / cap sheet 10-year warranty 1.5 gal/sq 1 23 mils 1.5 gal/sq Bleed Block Primer 1.50 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Granulated Asphaltic (UH-6)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
15-year warranty 2 gal/sq 1 31 mils 1.5 gal/sq Bleed Block Primer 1.50 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Granulated Asphaltic (UH-6)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
20-year warranty 2.5 gal/sq 1 39 mils 1.5 gal/sq Bleed Block Primer 1.50 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Granulated Asphaltic (UH-6)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
Smooth asphalt / mod-bit / Built-up (BUR) 10-year warranty 1.5 gal/sq 1 23 mils 1 gal/sq Bleed Block Primer 1.00 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Smooth Asphaltic (UH-5)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
15-year warranty 2 gal/sq 1 31 mils 1 gal/sq Bleed Block Primer 1.00 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Smooth Asphaltic (UH-5)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
20-year warranty 2.5 gal/sq 1 39 mils 1 gal/sq Bleed Block Primer 1.00 gal/sq (after Cleaning Concentrate … GAF High Solids Silicone Quick Spec — Smooth Asphaltic (UH-5)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available; membrane aged 30+ days; not over gravel
Spray foam (SPF) 10-year warranty 1.25 gal/sq 1 19 mils See note No primer listed GAF High Solids Silicone Quick Spec — Spray Polyurethane Foam (UH-9)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
15-year warranty 1.75 gal/sq 1 27 mils See note No primer listed GAF High Solids Silicone Quick Spec — Spray Polyurethane Foam (UH-9)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
20-year warranty 2 gal/sq 1 31 mils See note No primer listed GAF High Solids Silicone Quick Spec — Spray Polyurethane Foam (UH-9)
May be applied in a single pass where substrate and slope allow; Emerald and Diamond Pledge warranties available
Published warranty rates · GAF silicone seams & details (6-in width): 3-coursed Silicone Mastic + fabric 2.5 gal/sq (75 LF/gal, 45 mils); flashing grade only 4.0 gal/sq (50 LF/gal, 60 mils); on asphaltic roofs coating-only seam rate 1.25 gal/sq (200 LF/gal, 19 mils)Data sheet →Estimate this system →

Premium Acrylic HydroStop Top Coat

Acrylic52% volume solids

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
Metal 10-year warranty 1.5 gal/sq (0.75 avg per coat) 2 13 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
0.75 + 0.75 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
15-year warranty 2 gal/sq (1 avg per coat) 2 17 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
20-year warranty 3 gal/sq (1.5 avg per coat) 2 25 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
Structural concrete 10-year warranty 3 gal/sq (1.5 avg per coat) 2 25 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
15-year warranty 4 gal/sq (1.33 avg per coat) 3 33 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
Published warranty rates · GAF acrylic seams & details (6-in width): 3-coursed Premium Brush-Grade Acrylic Flashing + fabric 4.0 gal/sq (30 LF/gal, 43 mils); flashing grade only 2.0 gal/sq (100 LF/gal, 19 mils)Data sheet →Estimate this system →

High Tensile Acrylic Top Coat

Acrylic

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
Metal 10-year warranty 2.5 gal/sq (1.25 avg per coat) 2 21 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
15-year warranty 3.5 gal/sq (1.17 avg per coat) 3 29 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
20-year warranty 4.5 gal/sq (1.5 avg per coat) 3 38 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.50 + 1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
Structural concrete 10-year warranty 3 gal/sq (1.5 avg per coat) 2 25 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
15-year warranty 4 gal/sq (1.33 avg per coat) 3 33 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
Published warranty rates · GAF acrylic seams & details (6-in width): 3-coursed Premium Brush-Grade Acrylic Flashing + fabric 4.0 gal/sq (30 LF/gal, 43 mils); flashing grade only 2.0 gal/sq (100 LF/gal, 19 mils)Data sheet →Estimate this system →

Acrylic Top Coat (Roof Mate)

Acrylic53% volume solids

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
Metal 10-year warranty 2.5 gal/sq (1.25 avg per coat) 2 21 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
15-year warranty 3.5 gal/sq (1.17 avg per coat) 3 30 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
20-year warranty 4.5 gal/sq (1.5 avg per coat) 3 38 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.50 + 1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
Structural concrete 10-year warranty 3 gal/sq (1.5 avg per coat) 2 26 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
15-year warranty 4 gal/sq (1.33 avg per coat) 3 34 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
All approved substrates System minimum (TDS) 2 gal/sq (1 avg per coat) 2 17.5 mils — Data sheet: system minimum 2.0-3.0 gal/sq at 1.0-1.5 gal/sq per coat; substrate not stated
Published warranty rates · GAF acrylic seams & details (6-in width): 3-coursed Premium Brush-Grade Acrylic Flashing + fabric 4.0 gal/sq (30 LF/gal, 43 mils); flashing grade only 2.0 gal/sq (100 LF/gal, 19 mils)Data sheet →Estimate this system →

WOB Acrylic TopCoat

Acrylic

Substrate Warranty term Total rate Coats Dry film Primer Source / notes
Metal 10-year warranty 2.5 gal/sq (1.25 avg per coat) 2 23 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
15-year warranty 3.5 gal/sq (1.17 avg per coat) 3 32 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.00 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
20-year warranty 4.5 gal/sq (1.5 avg per coat) 3 42 mils 0.4 gal/sq Metal Roof Primer on rusty areas, 0.3-0.5 gal/sq (after Cle… GAF Acrylic Quick Spec — Metal (LAR-1)
1.50 + 1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald and Diamond Pledge warranties available
Structural concrete 10-year warranty 3 gal/sq (1.5 avg per coat) 2 28 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
15-year warranty 4 gal/sq (1.33 avg per coat) 3 37 mils 0.35 gal/sq Epoxy Primer 0.3-0.4 gal/sq (after Cleaning Concentrate 0.5… GAF Acrylic Quick Spec — Structural Concrete (LAR-8)
1.50 + 1.50 + 1.00 gal/sq; a Base Coat is used as the first coat; Emerald Pledge available
Published warranty rates · GAF acrylic seams & details (6-in width): 3-coursed Premium Brush-Grade Acrylic Flashing + fabric 4.0 gal/sq (30 LF/gal, 43 mils); flashing grade only 2.0 gal/sq (100 LF/gal, 19 mils)Estimate this system →

Rates transcribed from the manufacturer’s published quick specs and data sheets — September 28, 2026. Premium members load any term straight into the material calculator. Always confirm current specifications with the manufacturer.

Planning a project with GAF products?Run the numbers with their published application rates — gallons, pails, and primer in seconds.

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Sourcing

Where to buy GAF coatings.

National distributors

SRS DistributionBeacon Building Products
Retail

The Home Depot

Commercial coatings (United Coatings, Unisil, HydroStop) sell through pro roofing distributors; a subset of GAF roof coatings is stocked at Home Depot.

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121 GAF contractors are listed on RCNBrowse crews using GAF systems, filtered by state, roof type, and coating.

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Proof in the field

Projects featuring GAF systems.

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GAF contractors by state.

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