Description
POLAROOF RAC
Reflective, Fire-Retardant Urethane Roof Coating. Durable Seamless Waterproof Protection.
POLAROOF RAC is a high-performance, single-component moisture-cure urethane roof coating engineered for maximum durability, fire resistance, and long-term waterproofing performance. Reinforced with bright aluminum flakes and fire-retardant additives, it forms a seamless, protective membrane designed to withstand harsh environmental and rooftop conditions.
Built for demanding applications, POLAROOF RAC delivers a tough, elastic coating with high tensile strength and excellent puncture resistance, ensuring long-term durability under foot traffic, weather exposure, and thermal movement. Its reflective aluminum finish helps reduce heat absorption, lowering roof temperatures and improving energy efficiency.
Ideal for both new construction and restoration, POLAROOF RAC protects a wide range of substrates from water intrusion, corrosion, UV degradation, and acid rain, while maintaining flexibility across extreme temperature ranges. The system also withstands ponding water and retains performance without cracking, peeling, or breaking down over time.
POLAROOF RAC is listed by Underwriters Laboratories® (UL) and approved by Factory Mutual (FM), providing trusted, industry-recognized fire and performance ratings.
Key Benefits
- Extreme Durability
High tensile strength and puncture resistance for long-term performance in demanding environments - Fire-Retardant Protection
Upgrades roofing systems to Class “A” fire status - Reflective Energy Savings
Bright aluminum finish reflects solar and radiant heat, reducing roof temperatures and energy costs - Seamless Waterproofing
Creates a fully adhered, high-density membrane that prevents water infiltration - All-Weather Performance
Remains flexible in low temperatures and stable under high heat without flowing or degrading - Ponding Water Resistant
Performs on vertical, pitched, and horizontal surfaces, including areas with standing water - Corrosion & UV Resistance
Protects against rust, oxidation, UV exposure, and acid rain - Lightweight Restoration System
Can be applied over existing roofing systems, minimizing tear-off and reducing labor costs - Weatherproof & Non-Re-Emulsifying
Will not wash away or deteriorate under rain exposure - Recoatable & Long Service Life
Easily maintained and supported by a 10-year material warranty
Recommended Substrates
Suitable for application over:
- Asphalt BUR and coal tar BUR
- Concrete and masonry
- Spray polyurethane foam (SPF)
- EPDM, PVC, TPO, Hypalon, and other single-ply membranes
- Metal roofing systems (steel, aluminum, etc.)
- Wood and plywood
- Modified bitumen
- Insulation systems
- Slate, tile, and other approved surfaces
Coverage
Approximately 33–50 sq ft per gallon
(Coverage may vary depending on substrate condition and porosity.)
Container sizes
1 gallon, 5 gallon, 55 gallon
Technology
Moisture-Cure Urethane System with Aluminum Flake Reinforcement
Test Reports
Preparation and Application
Surface Preparation
Surfaces must be dry, free of dirt, loose debris, oils, grease or any substance that could interfere with adhesion. Surface must remain at least 5°F above dew point during the application and curing process. Polaroof RAC should never be applied to a wet or damp surface, or pinholes may result.
Application
Do not apply if the substrate or air temperature is predicted to drop below 35°F (2°C) within 4 hours after application. The application surface must remain at least 5°F (3°C) above dew point during the application and curing process. Do not apply Polaroof RAC to wet, damp, or frozen surfaces. Do not apply if the area cannot be protected from precipitation for at least 4 hours after application.
Polaroof RAC is applied directly out of the container after at least 2 minutes of low speed drill stirring. Do not thin the product. Apply in 2 coats using a soft brush, medium nap roller, or airless sprayer in a smooth, even technique.
Reinforcing over seams on Metal Roofs:
Achieved by embedding ROOFAB into a fresh coat of POLAROOF RAC applied at 15 to 25 mils wet thickness. The fabric is then brushed thoroughly to squeeze the POLAROOF RAC upwards to remove all voids, fishmouths and dry spots. A second coat is then applied to seal the surface of the fabric. Bolt-heads on metal roofs should be daubed with sufficient POLAROOF RAC that they are encapsulated to the point of rundown. As soon as the POLAROOF RAC has dried, it may be coated with POLAROOF RAC or other compatible topcoat.
Application over EPDM, Modified and other roofs:
Requires the preparation detailed above, including reinforcement of seams. Some types of rubbers will swell slightly immediately upon application. This is normal, the adhesion process is complete when the original dimensions have returned. New urethane foam should receive 2 coats of POLAROOF RAC at 15 mils wet thickness per coat. Sudden precipitation will not wash POLAROOF RAC off when wet or newly applied, but will produce a mottled, dull appearance that is not detrimental to overall appearance.
Spray Application
Utilize a 30:1 airless pump, a 3/8″ moisture excluding hose and a 33 width tip
Recommended Thickness
2 coats yield 30 mils Dry Film Thickness (DFT)
Dry time to walk on
Approximately 24 hours at 80°F (27°C) and 70% RH.
Total Curing Time
Approximately 72 hours at 80°F (27°C) and 70% RH.
Clean up
Clean tools and equipment with Xylene or Aromatic Naptha
Storage
Store in a dry area and protect from direct sunlight and freezing. Keep container tightly sealed. Shelf life is 2 years from date of manufacture when stored in a factory sealed container between 50ºF (10ºC) and 81ºF (27ºC).
Disposal
Waste disposal must be in accordance with existing federal, state and local environmental control laws. Incineration is the preferred method of disposal.
Read the container label warning and Safety Data Sheet (SDS) for important health and safety information prior to the use of this product.
KEEP AWAY FROM CHILDREN AND PETS
For additional information, contact the Andek Technical Department
Polaroof RAC Application Guide over various Roof Substrates
Technical Data
| VOC | 200 gms/liter | |
| Moisture Vapor Transmission | 1.57 perms | ASTM E-96 |
| Tensile Strength | 600 psi | ASTM D-412 |
| Elongation | 500% | ASTM D-412 |
| Flexibility at Low Temperatures | 180° bend @ -10° C | ASTM C-711 |
| Shore ‘A’ Hardness | 56 degrees | ASTM D-2240 |
| Surface spread of flame |
Class 1 | ASTM E-108 |
| Puncture Resistance |
120 psi | ASTM D-154-79 |
| Viscosity at 70°F |
4,500 cps | ASTM D-446 |
| Solids Content | 82% (B.W.); 94% (B.V.) | ASTM D-1044 |
