Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
- Product Families
Features & Benefits
Applications & Uses
- Application Area
- Compatible Substrates & Surfaces
- Uses
KM Acryl 40-HS is designed to protect and seal a variety of roof systems and can be used as either a base or surface coating. When the substrate is properly prepared, KM Acryl 40-HS can be used on aged BUR and mineral surfaced modified bitumen membranes and also over most thermoplastic, thermoset, and metals (a primer may be required). When applied over asphaltic surfaces, KM Acryl 40-HS offers resistance to asphalt staining (“bleed through” resistance). KM Acryl 40-HS can be applied directly to concrete, SPUF, exterior-grade plywood and most rigid cover boards. Usage to certain substrates may be limited or require additional preparation.
- Application Instructions
Surface Preparation:
• All surfaces to receive coating must be clean, dry and free from any foreign matter such as dirt, oils, grease or other debris that could inhibit the adhesion capabilities of the newly installed products.
• Metal surfaces that display rusting or other oxidation, to be prepared with a grinder or wire brush as needed to remove surface contaminants.
• Existing roof systems to be visually inspected for conditions that may adversely affect adhesion of performance of newly installed products.
• Visually inspect all metal and non-metal flashings, edges, drains, valleys and through-roof penetrations and repair as needed by project conditions.
• Do not apply to wet or visibly damp surfaces, or surfaces previously covered with coal tar based products or Kynar® finishes.
• Concrete surfaces cured with wax/resin based compounds can inhibit adhesion.
Application:
• Mix well prior to application.
• KM Acryl 40-HS is recommended to be applied with high pressure sprayer for best appearance and coverage, however may be applied by roller or brush applications.
• Apply KM Acryl 40-HS at 24 wet mils (1.5 gallons per 100 square feet) per coat. Typical application conditions require KM Acryl 40-HS be applied in two coats at 24 wet mils per coat.
• Allow coating to dry overnight prior to applying second coat.
• To minimize potential voids or pinholes in coating application, apply second coat perpendicular to the first.
• Apply only when ambient temperatures are 50°F and rising. Cold weather could result in uneven application and improper curing of product. Do not apply if there is a threat of inclement weather within 24 hours of application.
• Do not thin product. Do not heat outside of container. Do not apply at temperatures greater than 120°F.
• Prior to using this product on new cap sheets (smooth or granulated), it is recommended to wait 30 days for weathering.- Spray Equipment
KM Acryl 40-HS can be applied by conventional airless spray equipment designed for the purposes of field application of fluids, paints and coatings. The following minimums are recommended:
Pump: 1.6 gal/min output; 2,500 psi
Gun/Tip: Reversible tip with orifice sizes ranging from .025–.039.
Hose: Minimum inside diameter of high pressure nylon hose of 3⁄8" to 75'; 1⁄2" to 200'.
Refer to equipment manufacturer product guidelines.
Properties
- Typical Physical Properties
| Value | Units | Test Method / Conditions | |
| Weight Per Galllon | 11.5 - 12.5 | lb | ASTM D2939 |
| Solids Volume | 58 - 62 | % | ASTM D2697 |
| Solids Volume | 68 - 72 | % | ASTM D1644 |
| Elongation | 235 - 335 | % | ASTM D2370 |
| Tensile Strength | 245 - 345 | psi | ASTM D2370 |
| Accelerated Weathering | Pass | - | ASTM D4798 |
| Fungi Resistance | Pass | - | ASTM G21 |
| Flash Point | min. 212 | °F | PMCC |
| Viscosity (77°F, 25°C) | 28,000 - 58,000 | cP | ASTM D2196 |
| Dry Film Thickness (1 Gal/100 ft²) | 9.6 | mils | - |
| Dry Time (hours) | 3 - 5 | hours | - |
| Volatile Organic Compound (VOC) | max. 20 | g/l | - |
| pH | 9.0 | - | - |
Regulatory & Compliance
- Certifications & Compliance
- Codes and Standards
• Meets or exceeds the requirements of ASTM D6083 Type II Standard Specification for Liquid Applied Acrylic Coating Used in Roofing.
• UL Classified - File #R20755
• ICC ESR-4942
• Can be used to comply with 2016 Title 24 Part 6 Cool Roof Requirements (white only)
• CRRC listed (white only)
• Texas Department of Insurance
• Florida Building Code
• Miami-Dade County Product Control Approved
Packaging & Availability
- Packaging
5GA pail, 55GA drum, 250GA tote
- Standard Colors
KM Acryl 40-HS is available in White, Gray, and Tan.
Storage & Handling
- Storage and Cleaning
• Product shelf life: Typically 18 months from date of manufacture when properly stored.
• Do not store at temperatures greater than 120°F.
• Store 24 hours at room temperature prior to application.
• Observe normal safeguards for storing and handling of this product prior to and during application.
• Do not allow product to freeze. Discard if any degree of freezing would occur.
• Keep containers covered when not in use.
• Clean equipment and overspray with water.
• Clean hands with waterless hand cleaner.