Jotamastic 87 is a two pack, anticorrosive, surface-tolerant, abrasion resistant, high solids, epoxy mastic coating for repair and maintenance. Suitable for use on steel where blast cleaning may not be possible, on hydrojetted surfaces still being moist and as a solution for less severe environments.
Jotamastic 87 provides long-lasting protection and can be used alone as primer, mid coat and finish coat, or in combination with various systems. Suitable for use in atmospheric and immersed environments and can be applied at sub zero surface temperatures. This product is a part of a complete system which is certified not to spread flames. If exposed to sunlight chalking will likely occur.
- Minimal surface preparation
- Surface tolerant for maintenance and repair
- More than 25 years track record
- Cures at low temperatures
- May be applied in high film thickness
- Excellent resistance to salt & fresh water
- For severe environments requiring long lifetime expectancy
|Application Method ||Airless Spray, Brush or Roller |
|Surfaces ||Generally for Maintenance & Repair |
|VOC Level ||236g / Litre |
|Coverage ||2.7m² / Litre |
|Touch Dry ||18 Hours @ 10°C / 2 Hours @ 40°C |
|Over-Coating ||24 Hours @ 10°C / 4 Hours @ 40°C |
|Pot life @ 23°C ||Standard - 2 Hours |
|Winter - 1 Hour |
|Maintenance Cycle ||Standard - 4 Years |
|Winter - 3 Years |
|Thinning & Cleaning ||Jotun No.17 |
|Number of Coats ||2 |
Surface Preparation: All surfaces should be clean and free from contamination. The surface should be assessed and treated in accordance with ISO 8504.
Bare steel: Cleanliness: Power tool cleaning to min. St 2, mill scale free (ISO 8501-1:1988). Improved surface treatment (blast cleaning to Sa 21⁄2) will improve the performance. In case of hydrojetting the flash rust degree shall not exceed moderate in SSPC and NACE standards for water prepared surfaces.
Shop primed steel: Clean, dry and undamaged approved shopprimer.
Coated surfaces: Clean, dry and undamaged compatible primer. For maintenance UHPWJ to WJ2 (NACE No.5/SSPC-SP 12) or Power tool cleaning to min. St 2 for rusted areas.
Other surfaces: The coating may be used on other substrates.
Please contact us for more information.
Typical Paint System: Jotamastic 87 2 x 200 μm (Dry Film Thickness) followed by Hardtop AS 1 x 50 μm (Dry Film Thickness).
Other systems may be specified, depending on area of use.
General: Primarily designed for maintenance and repair.
Marine: Outside hulls, exterior and interior areas, including water ballast tanks.
Protective: Recommended for offshore environments, including splash zones, refineries, power plants, bridges, buildings, mining equipment and general structural steel.
Spray: Use airless spray.
Brush: Recommended for stripe coating and small areas. Care must be taken to achieve the specified dry film thickness.
Roller: May be used for small areas. Not recommended for first primer coat. Care must be taken to achieve the specified dry film thickness.