Description
RUBBERKOTE® 1047
Kevlar® Reinforced All-Weather Roof Repair Coating
RUBBERKOTE® 1047 is a high-performance, fiber-reinforced waterproofing coating engineered for long-term roof repairs and maintenance. Formulated with DuPont Kevlar® technology, it delivers exceptional strength, flexibility, and durability in even the harshest conditions.
Designed to stop leaks instantly and permanently, RUBBERKOTE® 1047 cures in wet, freezing, and even submerged conditions—making it the ideal solution for emergency repairs or as a permanent waterproofing membrane.
Key Benefits
- Instant Leak Protection – Seals leaks immediately, even in ponding water
- All-Weather Performance – Cures underwater and in freezing temperatures
- Kevlar® Reinforced Strength – Enhanced durability and crack-bridging capability
- Seamless Waterproof Membrane – Fully adhered, high-density, flexible barrier
- UV Stable – Will not chalk, crack, or peel
- Temperature Resistant – Remains flexible in cold weather and will not flow in high heat
- No Primer or Topcoat Required – Apply directly from the container
- Vertical & Horizontal Use – Suitable for pitched, flat, and vertical surfaces
- Will Not Re-Emulsify – Resists wash-off and water breakdown
- Non-Staining – Compatible with coatings applied over it
- 5-Year Material Warranty
Ideal For
Substrates:
BUR, cap sheet, modified bitumen, steel, aluminum, tin, concrete, fiberglass, and other common roofing materials.
Repairs Including:
- Surface splits and cracks
- Coping and control joints
- Membrane pinholes
- Gutter seams and rain collars
- Pipe penetrations
- Fish mouths
- Junctions between dissimilar materials
Coverage
Approximate 30 to 40 sq ft/gal (depending upon substrate)
Container sizes
1 gallon, 3.5 gallon
Color
Light Gray
Preparation and Application
Surface Preparation
Although only minimal preparation is required, all loose material, stones and grease should be removed, together with as much dust, rust and standing water as is reasonably possible. Bird excrement, algae and slime mold should be scrubbed off of the surface for best adhesion results. All holes, gaps and joints should be bridged with ROOFAB sandwiched between sufficient RUBBERKOTE 1047 to provide thorough wetting of the roof surface and thorough saturation of the ROOFAB. This is best accomplished by “stippling in” with a brush. RUBBERKOTE 1047 may be applied in 2 coats of 20 wet mils thickness each over capsheet, modified, metal, transite or concrete after the above preparation is complete.
Application
The 1st coat may be applied directly over any fresh, wet repairs as curing will proceed regardless of thickness although slower. The 2nd coat may be applied as soon as the 1st coat is sufficiently dry to walk on (normally 2-3 days at 65°F). Care should be taken not to disturb any patches or pre-treatments as they may still be wet. RUBBERKOTE 1047 may be applied over asphalt or coal tar B.U.R. after the preparation described above has been completed. The 1st coat should be applied at 66 square feet per gallon; ROOFAB laid into it and thoroughly “stippled in” by brush with a 2nd coat at 66 square feet per gallon to remove all tents and voids. The Roofab should be overlapped by at least 2 inches and thoroughly saturated with RUBBERKOTE 1047 so that no dry spots remain.
Dry time to walk on
Approximately 60 hours at 80°F (27°C) and 70% RH.
Total Curing Time
Approximately 7 days (to 36 deg. Shore ‘A”‘) 80°F (27°C) and 70% RH.
Clean up
Clean tools and equipment with Mineral Spirits.
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 | 400 gms/liter | |
| Moisture Vapor Transmission | 0.32 perms | ASTM E-96 |
| Tensile Strength | 250 psi | ASTM D-412 |
| Elongation | 65% | ASTM D-412 |
| Flexibility at Low Temperature | 180 deg. bend @ -20°C | ASTM C-711 |
| Shore ‘A’ Hardness | 36 degrees | ASTM D-2240 |
| Puncture Resistance |
50 psi | ASTM D-154-79 |
| Viscosity at 70°F |
10,000 cps | ASTM D-446 |
| Solids Content |
60% (B.W.); 58% (B.V.) | ASTM D-1044 |








