Jotamastic 90 Low Surface Treatment Epoxy Wear-resistant Coating 90 is an epoxy coating. Industrial protective coatings field: recommended for offshore environments, including splash zones, refineries, power stations, bridges, buildings, mining equipment and general structural steel. Suitable for properly prepared carbon steel, galvanized steel, stainless steel, aluminium, concrete and many aged coated surfaces. Parameters on this page: volume solids 80 ± 2%, dry film thickness 100–300 µm, theoretical spreading rate 8–2.7 m²/L. Comparable products of the same brand: Balloxy HB Light Epoxy Ballast Water Tank Coating, Jota Armour Heavy-duty Wear-resistant Epoxy Anti-slip Coating, Jotacote HF002 General Wear-resistant Epoxy Coating HF.
Parameter source: JOTUN original technical data sheet (TDS) "Jotamastic 90 Low Surface Treatment Epoxy Wear-resistant Coating 90"; values such as spreading rate are converted according to TDS parameters, for selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 80 ± 2% |
|---|---|
| Dry Film Thickness | 100–300 µm |
| Theoretical Spreading Rate | 8–2.7 m²/L |
| VOC | 159 g/L (China) |
| Density / Specific Gravity | 1.4 kg/L |
| Number of Components | Two-component |
| Flash Point | 35 °C |
| Thinner | Jotun Thinner No. 17, JOTUN Thinner No. 17, generally not required… |
| Gloss | Semi-gloss (35–70) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Jotamastic 90
This is a two-component, polyamine-cured low surface treatment epoxy coating. It is a high-build product featuring low surface treatment, wear resistance and high solids content. This product can be tinted to various colours using the JOTUN Industrial Protective Coatings colour tinting machine (MCI). It is specifically designed for areas where ideal surface preparation cannot be achieved or is not required. It provides long-term anti-corrosion protection in highly corrosive environments. It can be used as primer, intermediate coat, topcoat or single-coat system in atmospheric and immersion environments. Suitable for properly prepared carbon steel, galvanized steel, stainless steel, aluminium, concrete and many aged coated surfaces. Can be applied at substrate temperatures below 0 °C.
General:
Mainly for maintenance and repair.
Marine coatings:
Hull shell, exterior and interior areas.
Industrial protective coatings:
Recommended for offshore environments, including splash zones, refineries, power stations, bridges, buildings, mining equipment and general structural steel.
Others
Certified according to IMO Res.288(87), suitable for crude oil tank PSPC standard (applicable to standard grade only)
Pre-qualified according to Norsok M-501 in selected coating systems. Grain certificate issued by the Occupational Health Agency, Newcastle (UK). Certified to comply with IMO 2010 FTP Code — low flame spread requirements. For details, please consult your JOTUN representative.
Other certificates and approvals are available on request.
Jotamastic 90 Aluminium Low Surface Treatment Epoxy Wear-resistant Aluminium Pigmented Coating 90 (0D5)
Jotamastic 90 GF — Surface-Tolerant Epoxy Abrasion-Resistant Glass Flake 90 (0C5)
For the different products in this series, refer to the respective technical data sheets
Black, white and tinted using the industrial colour tinting system (MCI)
Property Test/Standard Description
Ambient-curing
| Volume Solids | ISO 3233 | 80± 2 % |
| Gloss (GU 60°) | ISO 2813 | Semi-gloss (35–70) |
| Flash Point | ISO 3679 Method 1 | 35 °C |
| Density | Theoretical Value | 1.4 kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| US | CARB(SCM)2020 / SCAQMD rule 1113 | Calculation | 234 g/L |
| Hong Kong | Air Pollution Control (VOC) Regulation | Calculation | 234 g/L |
| EU | European Paint Directive 2004/42/CE | Calculation | 234 g/L |
| China | Mandatory national standard of China | GB 30981.2-2025 | 159 g/L |
Winter grade
| Volume Solids | ISO 3233 | 80± 2 % |
| Flash Point | ISO 3679 Method 1 | 36 °C |
| Density | Theoretical Value | 1.4kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| US | CARB(SCM)2020 / SCAQMD rule 1113 | Calculation | 213 g/L |
| Hong Kong | Air Pollution Control (VOC) Regulation | Calculation | 213 g/L |
| EU | European Paint Directive 2004/42/CE | Calculation | 213 g/L |
| China | Mandatory national standard of China | GB 30981.2-2025 | 173 g/L |
Test value, water-free
Coating hazards GB 30981.2-S-Pb≤1000-NC. Contains reactive thinner. The data listed are based on factory batch production and may vary slightly with colour.
| Gloss description | According to JOTUN's definition of functional coatings |
|---|
When switching between these two curing agents, slight colour variation may occur. If exposed without topcoat, the winter-grade product of the same colour yellows much faster than the standard product. VOC content is from the grey paint.
Typical recommended specification range
| Dry Film Thickness | 100–300 µm |
| Wet Film Thickness | 125–375 µm |
| Theoretical Spreading Rate | 8–2.7 m²/L |
| Dry Film Thickness | 100–300 µm |
| Wet Film Thickness | 125–375 µm |
| Theoretical Spreading Rate | 8–2.7 m²/L |
Surface Preparation
| Substrate | Minimum | Recommended |
| Carbon Steel | St 2 (ISO 8501-1) | Sa 2 (ISO 8501-1) |
| Stainless steel | The surface should be blasted with a non-metallic abrasive, | “Blast clean using an approved non-metallic abrasive |
| hand- or machine-sanded using abrasive paper or fibre discs, | to produce a sharp angular surface profile.” |
to produce scratch marks on the surface.
| Aluminium | The surface should be blasted with a non-metallic abrasive, | “Blast clean using an approved non-metallic abrasive |
| hand- or machine-sanded using abrasive paper or fibre discs, | to produce a sharp angular surface profile.” |
| Galvanised steel | The surface should be clean, dry and have a suitable profile | Sweep blast with a non-metallic abrasive to produce a clean, |
| ° | a rough and uniform surface. | |
| Shop-primed Steel | Clean, dry and intact shop primer (compliant with ISO 12944-4 clause 5.4). | Sa 2 (ISO 8501-1) |
| Coated surface | A clean, dry and sound compatible primer. | |
| Concrete | On rough, clean, dry, laitance-free surfaces, sweep blast at low | Curing time of at least 4 weeks. Maximum moisture 5%. Seal with |
| Water jetting. | Closed-circuit blasting, diamond grinding and other suitable methods to treat the surrounding concrete surface to remove laitance. | |
The recommended surface preparation provides optimum properties including adhesion, corrosion resistance, heat resistance and chemical resistance.
This product may be applied by the following methods
| Spray: | Apply by airless spray. | |
| Brush: | Recommended for touch-up and small-area application. Take care to achieve the specified dry film thickness. | |
| Roller: | Suitable for small areas. | Not recommended for the first primer coat. Take care to achieve the specified dry film thickness. |
| Jotamastic 90 Comp A — Surface-Tolerant Epoxy Abrasion-Resistant 90, Component A | 3.5 parts |
| Jotamastic 90 Standard Comp B Surface-tolerant Abrasion-resistant Epoxy 90, Component B | 1 part |
| Winter-grade Jotamastic 90 Comp A Low Surface Treatment Epoxy Wear-resistant Coating 90 Component A | 3.5 parts |
Jotamastic 90 Wintergrade Comp B — Surface-Tolerant Epoxy Abrasion-Resistant 90, Component B (Winter Grade) (1 part)
Regardless of substrate temperature, the minimum temperature of the mixed base and curing agent is 10 °C. At lower temperatures, thinner is required to achieve the specified application viscosity. Adding more thinner may reduce sag resistance and slow curing. If thinner is required, add it after mixing the two components.
| Thinner | Jotun Thinner No. 17, JOTUN Thinner No. 17, generally no thinning required. For application in extreme environments, consult the local JOTUN representative. When thinning, do not exceed local environmental regulations. |
|---|
| Nozzle tip size (inch/1000): | 19-25 |
| Nozzle pressure (minimum): | 150 bar/2100 psi |
Substrate temperature -5 °C 0 °C 5 °C 10 °C 23 °C 40 °C Ambient-curing
| Touch Dry | 20 h | 12 h | 4 h | 1.5 h |
| Walk-on Dry | 40 h | 20 h | 6 h | 3 h |
| Minimum recoat interval | 30 h | 10 h | 3 h | 1.5 h |
| Dry/cured to service | 28 days | 14 days | 7 days | 2 days |
| Touch Dry | 24 h | 18 h | 12 h | 8 h | 3.5 h |
| Walk-on Dry | 72 h | 30 h | 20 h | 12 h | 4 h |
| Minimum recoat interval | 54 h | 20 h | 10 h | 6 h | 2 h |
| Dry/cured to service | 21 days | 14 days | 10 days | 5 days | 3 days |
For the maximum recoat interval, refer to the Application Guide (AG) for this product.
Drying and curing times are determined based on temperature and relative humidity below 85%, with dry film thickness within the average range.
| Touch Dry | The state at which light finger pressure leaves no mark or stickiness. |
|---|---|
| Walk-on Dry | The minimum time after which the coating allows normal foot traffic without leaving permanent footprints, marks or other physical damage. |
Minimum recoat interval after drying: the recommended minimum interval before applying the next coat.
Dry/cured to service: the minimum time before the coating can be permanently exposed to a specific environment/medium.
| Paint temperature | 23 °C |
| Ambient-curing | |
|---|---|
| Pot life after mixing, winter grade | 2 h |
| Pot Life | 45 min |
Temperature
| Drying, atmospheric | Continuous 90 °C | Peak - |
| Immersed, sea water | 50 °C | 60 °C |
| Immersed, crude oil | 80 °C | 90 °C |
| Winter grade | ||
| Dry, atmospheric environment, continuous: 120 °C | ||
| Dry, atmospheric environment, peak: - |
Withstands peak temperatures for a maximum of one hour.
At the above temperatures, protective performance is unaffected, but appearance may be affected.
Note: this coating can withstand different immersion temperatures, depending on the specific chemical and whether immersion is continuous or intermittent. Heat resistance is affected by the coating system as a whole. When used with other coatings, ensure that all coatings in the system have similar heat resistance.
Depending on the actual exposure conditions in service, this product may be used with various primers and topcoats. Some reference systems are listed below. For specific systems, contact JOTUN.
| Previous coat: | Epoxy shop primer, inorganic zinc silicate shop primer, zinc epoxy, epoxy, modified epoxy, inorganic zinc silicate |
| Subsequent coat: | Polyurethane, polysiloxane, epoxy, acrylic, vinyl epoxy |
| Volume | Container Size |
| (L) | |
Jotamastic 90 Comp A 3.55/15.6 5/20 Low Surface Treatment Epoxy Wear-resistant Coating 90 Component A Jotamastic 90 Standard Comp B 1/4.4 1/5 Low Surface Treatment Epoxy Wear-resistant Coating 90 Component B Winter-grade Jotamastic 90 Comp A 3.55/15.6 5/20 Low Surface Treatment Epoxy Wear-resistant Coating 90 Component A Jotamastic 90 Wintergrade Comp B 1/4.4 1/5 Low Surface Treatment Epoxy Wear-resistant Coating 90 Component B (winter-grade)
The packaging sizes above are typical reference sizes for factory batch production. Due to regional regulatory differences, packaging sizes and capacities may vary by region.
Store in accordance with national regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.
| Jotamastic 90 Comp A — Surface-Tolerant Epoxy Abrasion-Resistant 90, Component A | 48 months |
| Jotamastic 90 Standard Comp B Surface-tolerant Abrasion-resistant Epoxy 90, Component B | 24 months |
| Jotamastic 90 Wintergrade Comp B — Surface-Tolerant Epoxy Abrasion-Resistant 90, Component B (Winter Grade) | 24 months |
In some markets, the stated shelf life may be shortened to comply with local legal requirements. The above is the minimum shelf life; thereafter, testing is required to confirm quality remains acceptable.
This product can contribute to green building standard credits. Visit Jotun.com for more information or contact your local JOTUN representative.
EPDs are available at www.epd-norge.no
For professional use only. Applicators and workers must be trained, experienced, capable and equipped to mix, stir and apply the coating correctly in accordance with JOTUN's technical documents. Applicators and workers must wear appropriate personal protective equipment when using this product. This guidance is provided based on current product knowledge. Any proposed modification to suit site conditions must be approved by the responsible JOTUN representative before use.
Read the safety warnings on the container packaging. Use in well-ventilated conditions. Avoid inhaling spray mist and avoid skin contact. In case of accidental splashes on skin, wash immediately with a suitable cleaner, soap and water. In case of eye contact, rinse thoroughly with water and seek medical attention immediately.
When used primarily as a primer or antifouling coating, products may show slight colour variation from batch to batch. Such products, and epoxy products used as topcoats, may chalk when exposed to sunlight.
Gloss and colour retention of topcoats depend on the colour type, the surrounding environment such as temperature and UV intensity, application quality and product type. Contact your local JOTUN office for further information.
The information in this datasheet is based entirely on knowledge gained in our laboratory and in practice. JOTUN products are regarded as semi-finished products, and their use is generally beyond our control. JOTUN therefore guarantees only the quality of the product itself. To comply with local regulations, the product may be adjusted, and we reserve the right to modify the datasheet without further notice.
Users should consult JOTUN for specific guidance on the suitability of the product for their requirements and applications.
In case of any discrepancy between language versions, the English (UK) version shall prevail.
Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
