Description
PDF FORMS: DATA SHEET, SDS PART A, SDS PART B
ROOFDX SL
Tough, Flexible, Lead-Like Appearance Protective Finish Coating
ROOFDX SL is a silicon-modified, aliphatic polyurethane finish coating engineered for exceptional toughness, flexibility, and long-term durability. Designed to replicate the appearance of lead-coated copper without containing any lead, it provides a premium architectural finish with superior environmental performance.
Formulated with micaceous iron oxide and a blend of flaked metals, including stainless steel, ROOFDX SL creates a dense, highly protective barrier against weathering, corrosion, and chemical degradation. The cured surface develops a distinctive silicon “hammer finish” texture that enhances durability, resists surface damage, and minimizes dirt retention.
ROOFDX SL is commonly used as a premium finish coat over Andek systems such as POLAROOF NW, POLAROOF RAC, and ROOFDX SUPER. When applied over ROOFDX COPPER, it delivers a highly realistic lead-coated copper appearance at a fraction of the cost, making it ideal for architectural restoration and high-end design applications.
Key Benefits
- Lead-Like Appearance (No Lead Content)
Authentic lead-coated copper visual effect without environmental or health concerns - Extreme Toughness & Flexibility
Maintains elasticity while delivering long-term durability and impact resistance - Seamless Protective Finish
Forms a dense, waterproof barrier against environmental exposure - Weathering & Corrosion Resistance
Protects against rust, oxidation, and long-term environmental degradation - Silicon Hammer Finish Surface
Textured surface improves damage resistance and reduces dirt retention - Chemical Resistance
Resists staining and deterioration from most industrial and environmental chemicals - Impact & Abrasion Resistance
Will not chip, flake, or peel under normal service conditions - Low Surface Energy
Helps prevent buildup of tree resin, bird droppings, and debris - Thermal Stability
Maintains dimensional integrity in both cold and high-temperature environments - Long-Term Aesthetic Stability
Retains lead-like appearance without discoloration over time
Recommended Substrates
Suitable for application over:
- BUR and cap sheet roofing
- Modified bitumen systems
- Steel, aluminum, and tin
- Concrete and masonry
- Fiberglass and composite surfaces
- RoofdX COPPER systems (for lead-coated copper appearance)
- Other approved roofing and architectural substrates
Coverage
Approximately 400 sq ft per gallon
(Coverage may vary depending on substrate condition and surface profile.)
Container Sizes
1 gallon, 5 gallon
Technology
2-Part Silicon-Modified Aliphatic Polyurethane System
Preparation and Application
Surface Preparation
All surfaces to be coated must be clean, dry and completely free of loose particles, oil, grease, or any substance that would interfere with proper adhesion.
Application
It is important to test for “through-cure” as coating over a dry-to-the-touch surface may cause blisters in the basecoat through solvent entrapment. Once “through-cure” has been established by subjecting aggressive torque to the surface, application of the ROOFDX SL may commence.
Add Part ‘B’ color concentrate into Part ‘A’ resin side and stir thoroughly for 3 minutes. ROOFDX SL is applied at a rate of 400 square feet per gallon in a single coat at a film thickness of 4 mils w.f.t. ROOFDX SL may be applied by brush, roller or airless spray technique in a thin even coat. As with any metallic coating, all brush strokes, roller or spray passes should be in the same direction so that the metal flakes within the coating orient themselves evenly for optical uniformity. Another important procedure is to stir frequently all mixed material to prevent settling of the metal flake pigments. Do not allow the mixed material to be contaminated with water or foam, bubbles and pinholes in the coating will develop. If this does happen, these defects may be sanded out and touched up once the coating has set thoroughly.
Spray Application
Utilize a 30:1 airless pump, a 3/8″ hose and a 21 tip
Recommended Thickness
2 to 3 mils Dry Film Thickness (DFT) per coat
Drying Time
Approximately 1.5 hours at 70°F (21°C) and 50% RH
Curing Time
Approximately 24 hours at 70°F (21°C) and 50% RH
Clean up
Equipment may be cleaned with toluene or xylene while the coating is still wet.
Limitations
Store in a cool dry place away from direct sunlight. Avoid opened containers, as moisture will cure the material. Do not apply in temperatures below 35°F. Application must be protected from precipitation for at least 4 hours. Shelf life is 12 months when stored in factory sealed containers between 45°F and 85°F.
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
Technical Data
| VOC | 250 gms/liter | |
| Impact Resistance | 4 mm indent | ASTM D-1474 |
| Color Measurement | 1.0 Delta E variation | ASTM D-2194 |
| Film Hardness | 2 H | ASTM D-3363 |
| Gloss Consistency | 1.5 | ASTM D-4449 |
| Lead-Free Determination | None detectable | ASTM D-5702 |
| Moisture Vapor Transmission |
0.5 perms @ 4 mil d.f.t. | ASTM E-96 |
| Tensile Strength |
4,500 lb/square inch | ASTM D-412 |
| Elongation |
10% | ASTM D-412 |
| Solids Content | 70% (B.W.); 66% (B.V.) | ASTM D-1044 |
| Flashpoint (liquid) | 110°F | FTMS 141A (M4293) |
| Flexibility @ Low Temperature | 180° bend @ 20°F | ASTM C-711 |
| Water Absorption | Zero | ASTM D-570 |
| Viscosity @ 70°F | 650 cps | ASTM D-446 |