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Polyurethane Top Coat

Gaco U91
Polyurethane Top Coat

GacoFlex U91

Take durability to new heights with this waterproof coating

GacoFlex U91 is a liquid-applied waterproof coating with diverse applications. Use this single-component, aromatic waterproofing membrane over metal, asphalt, and single-ply roofing systems, or over plywood and concrete as part of pedestrian and vehicular decking systems. GacoFlex U91 may also be used in shower pan liner applications. GacoFlex U91 is the ideal urethane coating solution for rejuvenating existing roofs or protecting traffic surfaces that require high durability and impact resistance.  

Roof Coating Applications 

GacoFlex U91 provides a weathertight seal that protects the substrate from degradation caused by UV, water, and other normal weathering hazards. Apply a top coat with GacoFlex UA6000 Aliphatic Urethane to add additional long-lasting reflectivity to your roof. 

GacoFlex U91 may be brush-applied, rolled, or spray-applied and meets the requirements of Florida Maintenance coating specifications (Note: these are pending code compliances). Three coats are recommended for most roof coating applications. The coating surface can generally receive another coat within 10-12 hours, and may be walked on within 24 hours. 

GacoFlex U91 may also be combined with GacoRoofFoam for a total roof replacement solution. 

Decking Applications 

Wherever you apply GacoFlex U91, you can trust its proven track record in the decking and waterproofing space. Two coats are recommended for most decking applications. The coating surface can generally receive another coat within 10-12 hours, and may be walked on within 24 hours. U91 for pedestrian and vehicle decking exceeds requirements of ASTM C957 Standard for High-Solids Content, Cold Liquid Applied Elastomeric Waterproofing Membrane with Integral Wearing Surface. It also complies with the IBC 2020 and IRC 2020. 

Whether you are using U91 for a roof coating or decking application, remember to put Gaco’s premium solutions to work for you. GacoFlex 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 GacoFlex U91 near you or contact your local GacoFlex Area Manager with questions. 

*Visit Gaco.com for warranty requirements.

Coating Benefits

Single-component moisture-cure polyurethane that can be rolled, sprayed (if thinned), or brushed

High Tensile Strength* (350% Elongation, 2600 psi strength)

Outstanding weatherability and chalking resistance for a long-lasting, clean aesthetic

High impact and abrasion resistant, making U91 ideal for frequently trafficked roofs and decks

Up to a 10-year warranty in decking applications, 20-year warranty  in roof coating applications*

*When combined with UA6000 topcoat.

Coating Details

1 year shelf life

5-gallon pails and 55-gallon drums available

A multi-layer system with aromatic base coats and an aliphatic topcoat (as needed)

Oyster, Pewter, Shale, and Adobe colors available 

For pedestrian and vehicle decking, exceeds requirements of ASTM C957; complies with IBC 2020 and IRC 2020

For shower pan liner and tile applications, exceeds requirements of ANSI 118.10

Filter icon Filter Results
PDS|GacoFlex™ U91C Series (Compliant)|Single-Component Urethane Coating August 12th, 2021 Product: GacoFlex U91 Product Data Sheets
PDS|GacoFlex™ U91 Series|Single-Component Urethane Coating August 12th, 2021 Product: GacoFlex U91 Product Data Sheets
GacoFlex Portfolio Sales Sheet August 9th, 2021 Product: GacoFlex S42 Brochure
ASP-U91S42-44-20|GacoFlex™ U91 & S4200 over Asphalt July 14th, 2021 Product: GacoFlex U91 Specifications
ASP-U91S42-36-15|GacoFlex™ U91 & S4200 over Asphalt July 14th, 2021 Product: GacoFlex U91 Specifications
ASP-U91S42-30-10|GacoFlex™ U91 & S4200 over Asphalt July 14th, 2021 Product: GacoFlex U91 Specifications
SPF-U9102-60-20|GacoFlex™ U9102 over Spray Polyurethane Foam May 21st, 2021 Product: GacoFlex U91 Specifications
SPF-U9102-52-15|GacoFlex™ U9102 over Spray Polyurethane Foam May 21st, 2021 Product: GacoFlex U91 Specifications
SPF-U9102-44-10|GacoFlex™ U9102 over Spray Polyurethane Foam May 21st, 2021 Product: GacoFlex U91 Specifications
SP-U9102-60-20|GacoFlex™ U9102 over Single-Ply May 21st, 2021 Product: GacoFlex U91 Specifications
SP-U9102-52-15|GacoFlex™ U9102 over Single-Ply May 21st, 2021 Product: GacoFlex U91 Specifications
SP-U9102-44-10|GacoFlex™ U9102 over Single-Ply May 21st, 2021 Product: GacoFlex U91 Specifications
RC-U9102-60-20|GacoFlex™ U9102 for Re-Coat May 21st, 2021 Product: GacoFlex U91 Specifications
RC-U9102-52-15|GacoFlex™ U9102 for Re-Coat May 21st, 2021 Product: GacoFlex U91 Specifications
RC-U9102-44-10|GacoFlex™ U9102 for Re-Coat May 21st, 2021 Product: GacoFlex U91 Specifications
MR-U9102-60-20|GacoFlex™ U9102 over Metal Roof May 21st, 2021 Product: GacoFlex U91 Specifications
MR-U9102-52-15|GacoFlex™ U9102 over Metal Roof May 21st, 2021 Product: GacoFlex U91 Specifications
MR-U9102-44-10|GacoFlex™ U9102 over Metal Roof May 21st, 2021 Product: GacoFlex U91 Specifications
ASP-U9102-60-20|GacoFlex™ U9102 over Asphalt May 21st, 2021 Product: GacoFlex U91 Specifications
ASP-U9102-52-15|GacoFlex™ U9102 over Asphalt May 21st, 2021 Product: GacoFlex U91 Specifications
ASP-U9102-44-10|GacoFlex™ U9102 over Asphalt May 21st, 2021 Product: GacoFlex U91 Specifications
RC-U91UA60-42-10|GacoFlex™ U91 & UA60 for Re-Coat April 16th, 2021 Product: GacoFlex U91 Specifications
RC-U91UA60-48-15|GacoFlex™ U91 & UA60 for Re-Coat April 16th, 2021 Product: GacoFlex U91 Specifications
RC-U91UA60-58-20|GacoFlex™ U91 & UA60 for Re-Coat April 16th, 2021 Product: GacoFlex U91 Specifications
SP-U91UA60-58-20|GacoFlex™ U91 & UA60 over Single-Ply April 16th, 2021 Product: GacoFlex U91 Specifications
SP-U91UA60-48-15|GacoFlex™ U91 & UA60 over Single-Ply April 16th, 2021 Product: GacoFlex U91 Specifications
SP-U91UA60-42-10|GacoFlex™ U91 & UA60 over Single-Ply April 16th, 2021 Product: GacoFlex U91 Specifications
SPF-U91UA60-42-10|GacoFlex™ U91 & UA60 over Spray Polyurethane Foam April 16th, 2021 Product: GacoFlex U91 Specifications
SPF-U91UA60-48-15|GacoFlex™ U91 & UA60 over Spray Polyurethane Foam April 16th, 2021 Product: GacoFlex U91 Specifications
SPF-U91UA60-58-20|GacoFlex™ U91 & UA60 over Spray Polyurethane Foam April 16th, 2021 Product: GacoFlex U91 Specifications
MR-U91UA60-58-20|GacoFlex™ U91 & UA60 over Metal Roof April 16th, 2021 Product: GacoFlex U91 Specifications
MR-U91UA60-48-15|GacoFlex™ U91 & UA60 over Metal Roof April 16th, 2021 Product: GacoFlex U91 Specifications
MR-U91UA60-42-10|GacoFlex™ U91 & UA60 over Metal Roof April 16th, 2021 Product: GacoFlex U91 Specifications
ASP-U91UA60-58-20|GacoFlex™ U91 & UA60 over Asphalt April 16th, 2021 Product: GacoFlex U91 Specifications
ASP-U91UA60-48-15|GacoFlex™ U91 & UA60 over Asphalt April 16th, 2021 Product: GacoFlex U91 Specifications
ASP-U91UA60-42-10|GacoFlex™ U91 & UA60 over Asphalt April 16th, 2021 Product: GacoFlex U91 Specifications
Gaco U91 Sell Sheet April 14th, 2021 Product: GacoFlex U91 Brochure
GacoFlex Standard Color Chart April 13th, 2021 Product: GacoFlex A30 Brochure
U9149-1K-MOISTURE-CURE-URETHANE-DESERT-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
U9118-1K-MOISTURE-CURE-URETHANE-ADOBE-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
U9116-1K-MOISTURE-CURE-URETHANE-SHALE-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
U9107B-1K-BASECOAT-MOISTURE-CURE-URETHANE-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
U9102-1K-MOISTURE-CURE-URETHANE-PEWTER-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
U9101-1K-MOISTURE-CURE-URETHANE-OYSTER-GHS07192016 December 30th, 2020 Product: GacoFlex U91 Safety Data Sheets
GacoFlex Standard Material Warranty-Sample 7007 December 30th, 2020 Product: GacoFlex S20 Additional Information
GacoFlex Deck Coating Warranty-Sample 7005 December 30th, 2020 Product: GacoFlex U61 Additional Information
GacoFlex Roof Coating Warranty-Sample 7003 December 30th, 2020 Product: GacoFlex S20 Additional Information
Evaluation Report – Creek Technical Services FL27003 – GacoFlex Pedestrian and Vehicular Traffic Deck Waterproofing Systems December 29th, 2020 Product: GacoFlex E5320 Evaluations / Approvals
GacoFlex Pedestrian and Vehicular Traffic Deck Waterproofing Systems - TDI RC-628 December 29th, 2020 Product: GacoFlex E5990 Evaluations / Approvals
Miami-Dade NOA - 18-0424 – GacoFlex U64,U66,U91 Pedestrian and Vehicular Traffic Deck Waterproofing Systems December 29th, 2020 Product: GacoFlex E5990 Evaluations / Approvals
07 18 13 / GW-14-U91 / GacoFlex Pedestrian Deck Single Component Polyurethane December 29th, 2020 Product: GacoFlex U91 Specifications
07 18 13 / GW-15-U91 / GacoFlex Vehicular Traffic Deck Single Component Polyurethane December 29th, 2020 Product: GacoFlex U91 Specifications
Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91

Polyurethane Top Coat

GacoFlex U91