Version 1.3 Quality You Can Trust...From North Americas Largest Roofing Manufacturer! ™ HYDROSTOP ® ® PREMIUMCOAT LIQUID-APPLIED ROOFING Application & Specifications Manual ' •-- -- .
HydroStop® PremiumCoat® Liquid-Applied Roofing Application & Specifications Manual Table of Contents Welcome...............................................................................................................................................3 Section 1: Guides Product Guide......................................................................................................................................6 Cleaner & Primer Guide....................................................................
Quick Specs Section 3: Quick Spec Directory HydroStop® PremiumCoat®..............................................................................................................28 Metal.......................................................................................................................................29 Smooth & Granulated Asphaltic.............................................................................................30 TPO............................................................
ABOUT GAF As North America’s largest roofing manufacturer, GAF proudly offers a comprehensive portfolio of award-winning, innovative roofing products for both residential and commercial properties. Supported by an extensive national network of factory-certified contractors, GAF has built its reputation—and its success—on its steadfast commitment to Advanced Quality, Industry Expertise, and Solutions Made Simple.
Welcome DISCLAIMER • GAF manufactures and sells roofing materials and does NOT practice architecture or engineering. GAF is NOT responsible for the performance of its products when damage to its products is caused by such things as improper building design, construction flaws, or defects in workmanship. • The design responsibility remains with the architect, engineer, roofing contractor, or owner, and construction details illustrated and described herein are furnished solely for guidance purposes.
Guides Section 1 Guides HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Cleaner & Primer Guide Cleaner* Single-Ply Asphaltic (BUR, SBS, APP) Metal Rusty Metal Application Rates Acrylex 400 0.33-0.67 gal /100 sf (1.4-2.7 L / 10 sq m) or StableRust 0.33-0.50 gal / 100 sf (1.4-2 L / 10 sq m) YES Severe Rusty Metal YES Lock-Down Primer 0.25 gal /100 sf (1 L / 10 sq m) Kynar Coated Metal YES XR-2000 0.75 gal /100 sf (3.1 L / 10 sq m) Residual Asphalt YES UniBase 0.50-1.0 gal /100sf (2-4 L / 10 sq m) Smooth Asphaltic YES UniBase 0.50-1.
Seam Treatment Guide Product Options (Choose One) Guides Substrate Butter Grade Flashing w/HydroStop® Fabric Horizontal Seams FoundationCoat® w/HydroStop® Fabric Liquid Fabric** Roof Mate Seam Tape or UniTape Metal Butter Grade Flashing Vertical Seams [Overlap and Trapezoidal seams MUST be treated; other types can forgo treatment if the seal/tape is in tact or if the seam is double locked.
Warranty Guide Emerald Pledge™ 15 yr 1 20 yr 2 10 yr 15 yr 20 yr HYDROSTOP: Who can offer Warranty? No Authorized Contractors Master & Master Select Contractors Yes No No No No Yes Yes Yes Yes Pre-Inspection/Approval Yes, for jobs over 20,000 sq. ft. (1,858 sq m) Yes, for jobs over 20,000 sq. ft. (1,858 sq m) Interim Inspection Yes, for jobs over 10,000 sq. ft.
Quick Specs Section 2 Substrate Preparation HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
GENERAL SUBSTRATE CONDITIONS Always contact GAF’s Technical Services Department (800-766-3411) for questions regarding suitable substrates, materials for test patches, or if you require additional information. PROPER PREPARATION FOR ROOF TYPES To ensure proper coating application, the existing roof membrane must be thoroughly cleaned. All dust, chalking film, bitumen exudate, greases or oils, and other loose debris should be removed prior to coating.
Quick Specs MOISTURE SURVEY It is the responsibility of the roofing contractor to determine the suitability of any substrate to receive a liquid-applied coating system. Roof moisture surveys are a common tool used to assist with this determination. When the deck/substrate has more potential to “hold” water, a moisture survey may be required by GAF. Alternately, for decks/substrates such as steel, the use of roof cuts to verify the suitability of the substrate can be effective.
REPAIR Damaged Substrate Treatment: Metal Areas of Concern Treatment Rust Areas • Severely damaged or rusted seams and/or fasteners must be replaced. Roof panels that are corroded to the point where they have holes must be replaced. • Light rust areas must be treated to prevent further deterioration on metal panels. Roof surface shall have no more than 20% rust or must have panels replaced. Fasteners • All fasteners must be retightened, secured, or replaced as necessary.
Damaged Substrate Treatment: Non-Metal Quick Specs Substrate Treatment TPO • Any areas where TPO has torn, cracked, and/or buckled, or where scrim is exposed must be repaired using similar compatible materials to the current roof. • Any wet insulation must be replaced. • Allow at least 48 hours drying time after the cleaning process before application of HydroStop® PremiumCoat® liquid-applied products.
Damaged Substrate Treatment: Non-Metal (Cont’d.) Substrate Treatment Structural Concrete • All large or excessive gaps (greater than 1/4” [6 mm]) must be repaired using high-quality concrete grout. Grout must fully cure before application of HydroStop® PremiumCoat® liquid-applied coating system. • Correct areas of ponding water. HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Quick Specs CLEANING PROCEDURES Treatment General Surface Prep • Clean and prepare surfaces to receive liquid-applied roofing products. Remove all dirt, dust, loose and flaking particles, grease, oil, laitance, pollution fallout, and other contaminants that may interfere with proper adhesion. • Use a stiff bristle push broom and/or pressure washing for cleaning and surface preparation.
GENERAL SUBSTRATE PREPARATION Areas of Concern Preparation Crickets • Sheet metal crickets must be installed according to metal deck manufacturer's specifications. • New crickets must be sealed with HydroStop® PremiumCoat® Butter Grade Flashing under the flanges before they are mechanically attached to the curb unit and metal roof panel. • Stitch-screw cricket flanges to the curb unit and metal roof panel while the HydroStop® PremiumCoat® Butter Grade Flashing is still wet using fasteners.
Substrate Preparation: Metal (Cont’d.) Quick Specs Areas of Concern Preparation Ridge Caps • All ridge caps must be flashed with HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • All voids and open areas in the ridge cap must be filled with polyurethane foam prior to application of the coating and fabric.
Substrate Preparation: Metal (Cont’d.) HORIZONTAL SEAMS Preparation Ribbed Seam • All ribbed panel vertical seams must be sealed with HydroStop® PremiumCoat® Butter Grade Flashing. Feather the coating until seams are no longer visible while brushing in the direction parallel to the seam. Standing Seam • All standing vertical seams must be sealed with a 1/2 inch (12 mm) bead of HydroStop® PremiumCoat® Butter Grade Flashing.
Substrate Preparation: TPO Quick Specs Areas of Concern Treatment Parapet Walls • Repair all open seams and any loose or failed terminations with inkind materials prior to application of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • All parapet wall details within the roof system must be secured and sealed with a 12 inch (305 mm) minimum width of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • Fabric must be cut around all fasteners so it lies flat.
Substrate Preparation: PVC & Hypalon® Areas of Concern Treatment Curb Flashings • All curb flashings, including cricket details, must be flashed with at least a 12 inch (305 mm) width of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • Encapsulate all fasteners using HydroStop® PremiumCoat® Butter Grade Flashing with fabric. Do not bridge fasteners. • Fabric must be cut around all fasteners so it lies flat.
Substrate Preparation: EPDM Quick Specs Areas of Concern Treatment Parapet Walls • Repair all open seams and any loose or failed terminations with inkind materials prior to application of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • All parapet wall details within the roof system must be secured and sealed with a 12 inch (305 mm) minimum width of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • Fabric must be cut around all fasteners so it lies flat.
Substrate Preparation: Smooth & Granulated Surfaced Asphaltic Areas of Concern Treatment Curb Flashings • All curb flashings, including cricket details, must be flashed with at least a 12 inch (305 mm) width of HydroStop® PremiumCoat® Butter Grade Flashing with fabric. • Encapsulate all fasteners using HydroStop® PremiumCoat® Butter Grade Flashing with fabric. Do not bridge fasteners. • Fabric must be cut around all fasteners so it lies flat.
Substrate Preparation: Structural Concrete Quick Specs Areas of Concern Treatment Parapet Walls • Repair all cracked, spalled and open concrete holes with an in-kind cementitious patch. Repair any loose or failed seams with similar materials as originally used. This is commonly a polyurethane sealant with a closed cell polyethylene backer rod.
Adhesion Testing When adhesion tests are conducted: • Test patches shall be labeled and photographed to document adhesion results. • Installer can consult with GAF’s Technical Services Department (800-766-3411) concerning all adhesion test results. GAF recommends either of the following test methods: Test Method #1: Test Patches Overview Patch testing gives information about the bond strength created between a liquid-applied product and a substrate.
Quick Specs Test Method #2: Field Peel Adhesion (Alternate to Test Patches) Overview ASTM D903 “Peel Adhesion” is found in all roof coating standards and is especially well-suited to field testing with elastomeric materials. Primers and enamels may also be evaluated by a similar test called ASTM D3359 “Tape Adhesion.” It may also be important to run the test wet; this is called “wet adhesion.” Preparation101 • Make a mock-up of the intended coating system on the existing roof surface.
Quick Specss Section 3 Quick Specs HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Quick Specs HydroStop® PremiumCoat® Quick Spec Directory Spec Number Substrate Specification Page # HS-1 Metal – HydroStop® PremiumCoat® 29 HS-2 Smooth & Granulated Asphaltic – Hydro�top™ PremiumCoat® 30 HS-3 TPO – HydroStop® PremiumCoat® 31 HS-4 PVC – HydroStop® PremiumCoat® 32 HS-5 Hypalon® - HydroStop® PremiumCoat® 33 HS-6 EPDM – HydroStop® PremiumCoat® 34 HS-7 Structural Concrete – HydroStop® PremiumCoat® 35 HS-8 Corrugated Structural Transite Panel – HydroStop® PremiumCoat® 3
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat • Roof must be clean, dry, and tight. • Adhesion test required to ensure proper adhesion to substrate(s).
Quick Specs QUICK SPEC SMOOTH & GRANULATED ASPHALTIC – HYDROSTOP® PREMIUMCOAT® (HS-2) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com.
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat Method • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Moisture survey required. • Roof must be clean, dry, and tight.
Quick Specs QUICK SPEC PVC – HYDROSTOP® PREMIUMCOAT® (HS-4) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Moisture survey required.
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Moisture survey required. • Roof must be clean, dry, and tight.
Quick Specs QUICK SPEC EPDM – HYDROSTOP® PREMIUMCOAT® (HS-6) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Moisture survey required.
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Moisture survey required. • Roof must be clean, dry, and tight.
Quick Specs QUICK SPEC CORRUGATED STRUCTURAL TRANSITE PANELS – HYDROSTOP® PREMIUMCOAT® (HS-8) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com.
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • Roof must be clean, dry, and tight.
Quick Specs QUICK SPEC GYPSUM ROOF BOARD (Densdeck® & Securock®) – HYDROSTOP® PREMIUMCOAT® (HS-10) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com.
QUICK SPEC NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat Requirements • The existing HydroStop® Roofing System will be inspected to determine eligibility for recoat. • Roof must be clean, dry, and tight.
METAL – HYDROSTOP® PREMIUMCOAT® + KYMAX (HS-12) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com. Method • Use GAF Roof Brush to apply HydroStop® PremiumCoat® Foundation Coat • Spray, roller, or brush apply HydroStop® PremiumCoat® Finish Coat • Roof must be clean, dry, and tight.
QUICK SPEC TPO, PVC, HYPALON, EPDM, ASPHALTIC, STRUCTURAL CONCRETE, STRUCTURAL CORRUGATED TRANSITE PANELS. ISO, GYPSUM (DENSDECK®, SECUROCK®) NOTE: The following “Quick Spec” is an abbreviated specification and is not meant to replace the detailed specification. Read the entire 3-Part CSI System Specification prior to starting the project. Specifications are available at www.gaf.com.
Care & Preventative Maintenance Section 4 Care & Preventative Maintenance HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
OVERVIEW The roofing system is a critical asset in the overall building envelope, and should be treated as such. Identifying and correcting potential problems early is paramount to ensuring that small problems do not become major issues. It is also essential in maintaining the integrity of the roof, protecting the building’s contents, and avoiding interruption of the building’s intended function.
Care & Preventative Maintenance • The use of catch pans (including proper drainage of these pans or other means of protection) may be used to protect the roofing membrane from exposure to grease, chemicals, and other materials that would otherwise be expelled onto the roof surface. Prolonged exposure to these materials can cause swelling and possible degradation of the roofing system if spills are not removed in a timely manner.
SEMI-ANNUAL INSPECTIONS & MAINTENANCE Semi-Annual Inspection & Maintenance Consist of cleaning the membrane and then a visual examination of the roof coating system. The inspection should include the overall coating condition as well as the integrity of flashings, vent pipes and other protrusions, skylights, drains, gutters, parapet walls and caps, adjacent walls, and mechanical equipment. Also check for evidence of any biological growth or other foreign debris.
Care & Preventative Maintenance prevent excessive leaf and pine needle accumulation, allowing as much sunlight to the roof as possible to help eliminate mildew and algae growth. 2. Liberally apply GAF United Cleaning Concentrate, diluted at a ratio of 1 part concentrate to 10 parts water, under low pressure to a given section of the roof at the rate of 0.4 to 0.7 gallons per 100 ft2 (1.6 to 2.9 L/m2). Allow the cleaner to sit for a minimum of 15 minutes. 3.
INSPECTION CHECKLIST 2. Prior to going onto the roof itself, inspect the underside of the deck (if accessible), as well as the outside of the building. Note any signs of excessive moisture or deterioration. These observations can give clues to not only problems with the roof, but also other conditions affecting the performance of the building envelope.
Care & Preventative Maintenance ROOF SPECIFIC LEAK INVESTIGATION On metal decks, it is important to identify the direction of the deck flutes and deck slope. Moisture may infiltrate through the roofing system, migrate in the lower flutes of the deck, and leak inside the building in low areas. On concrete decks or on projects where the existing roofing material is left in place, leaks may result from moisture entrapment in the original installation.
• Rinse the area with clean water and allow it to dry. • Apply HydroStop® PremiumCoat® Butter Grade Flashing and embed with fabric as needed to provide additional strength. Contact GAF Technical Services before any other product is used to confirm its suitability.
Architectural Design Drawings Section 5 Architectural Detail Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Architectural Design Drawings Drawing Number Substrate Specification Page # HS-101 Typical Metal Roof Joint Detail 50 HS-102 Section at Vertical Panel Seam 51 HS-104 Deck Joint Stripping Detail 52 HS-201 Standard Drip Edge Detail 53 HS-202 Gutter With Standard Drip Edge Detail 54 HS-203 Concrete Roof Deck Edge Detail 55 HS-300 Alternate Wall Flashing Detail 56 HS-301 Wall Flashing Detail 57 HS-302 Drip Edge Parapet Wall Deta
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
I �-- HYDROCAP FASTENER COVER -FULLY EMBEDED IN PREMIUMCOAT ® FOUNDATION COAT �-- BEAD OF HYDROSTOP PREMIUMCOAT ® BUTTER GRADE FLASHING ™ �--HYDROSTOP PREMIUMCOAT SYSTEM PER SPECIFICATIONS ™ ® �- METAL ROOFING IOPTION2 I �---- UNICAP FASTENER COVER ,-----UNITAPE SEAM TAPE �--HYDROSTOP PREMIUMCOAT@sYSTEM PER SPECIFICATIONS ™ �- METAL ROOFING !NOTE:! 1. PREPARE ALL SURFACES AS REQUIRED BY GAF SPECIFICATIONS. 2. IF RUST IS PRESENT, PRIME ENTIRE ROOF WITH STABLE RUST PRIMER@200 SF/GAL MIN COVERAGE. 3.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawingss HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
Architectural Design Drawings NOTES HydroStop® PremiumCoat® Liquid-Applied Roofing (LAR) – Version 1.
