Hardtop One Moisture-cured Acrylic Polysiloxane Topcoat belongs to Acrylic and is used as a topcoat. Industrial protective coatings segment: recommended for offshore environments such as refineries, power stations, bridges and buildings. This product is isocyanate-free and does not generate diisocyanate during hot work/welding or in the event of a fire. It exhibits excellent gloss retention and colour retention. Parameters on this page: volume solids 72 ± 2%, dry film thickness 60–100 µm, theoretical spreading rate 12–7.2 m²/L. Comparable models from the same brand and category: Conseal Touch-Up one-component physically drying acrylic coating, Hardtop CA two-component acrylic topcoat, Hardtop Pro SG acrylic polysiloxane topcoat SG.
Parameter source: JOTUN original technical data sheet (TDS) “Hardtop One Moisture-cured Acrylic Polysiloxane Topcoat”; values such as spreading rate are converted from TDS parameters and are 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 | 72 ± 2% |
|---|---|
| Dry Film Thickness | 60–100 µm |
| Theoretical Spreading Rate | 12–7.2 m²/L |
| VOC | 240 g/L (China) |
| Density / Specific Gravity | 1.4 kg/L |
| Number of Components | One-component |
| Flash Point | 30 °C |
| Thinner | JOTUN Thinner No. 2 |
| Gloss | Gloss (70–85) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Hardtop One
This is a one-component, moisture-curing acrylic polysiloxane coating. This product is isocyanate-free and does not generate diisocyanate during hot work/welding or in the event of a fire. It exhibits excellent gloss retention and colour retention. It is a high-solids product. It is designed for brush and roller application. It has good application properties and is not prone to dry spray. It is used as a topcoat in atmospheric environments.
Marine coatings:
Recommended for freeboard, decks and superstructures.
Industrial protective coatings:
Recommended for offshore environments such as refineries, power stations, bridges and buildings.
Others
Pre-qualified according to NORSOK M-501 in selected coating systems. Certified to the low flame-spread requirements of the IMO 2010 FTP Code. Other certificates and approvals are available on request.
Can be tinted using the industrial tinting system (MCI)
| Property | Test / Standard | Description |
| Volume Solids | ISO 3233 | 72± 2 % |
| Gloss (GU 60°) | ISO 2813 | Gloss (70–85) |
| Flash Point | ISO 3679 Method 1 | 30 °C |
| Density | Theoretical Value | 1.4 kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| US | CARB(SCM)2020 / SCAQMD rule 1113 | Calculation | 192 g/L |
| Hong Kong | Air Pollution Control (VOC) Regulation | Calculation | 192 g/L |
| EU | European Paint Directive 2004/42/CE | ISO 11890-2 | 159 g/L |
| China | Mandatory national standard of China | GB 30981.2-2025 | 240 g/L |
Coating hazards GB 30981.2-S-Pb≤1000-NC. 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 |
|---|
VOC content based on white paint.
Typical recommended specification range
| Dry Film Thickness | 60–100 µm |
| Wet Film Thickness | 80–130 µm |
| Theoretical Spreading Rate | 12 – 7.2 m²/L |
Bright colours may require a higher dry film thickness within the recommended range to achieve hiding.
Surface Preparation
| Substrate | Minimum | Recommended |
| Coated surface | A clean, dry and sound compatible primer. | Clean, dry and intact compatible primer. Lightly sand the surface prior to coating application. |
This product may be applied by the following methods
| Spray: | Suitable for air spray and airless spray. |
| Brush: | Recommended. Note that the specified dry film thickness must be achieved. |
| Roller: |
One-component. Ensure the lid is kept tightly closed when not in use. The coating cures on contact with moisture in the air. A lid not properly closed will cause curing in the can and alter the properties of the applied product.
| Thinner: | JOTUN Thinner No. 2 |
| Maximum thinning: | 10 % |
When the substrate temperature is below 5 °C, use JOTUN Thinner No. 7 to improve flow.
Normally no thinning is required. For application under extreme conditions, consult the local JOTUN representative. Do not thin beyond the requirements of local environmental regulations.
| Note | Where the Korean VOC regulation (Clean Air Conservation Act) and its corresponding thinning limits differ from the recommended thinning volume, the former prevails. |
|---|---|
| Cleaner | Jotun Thinner No. 7 |
When the thinner is used as a cleaning solvent, it must first comply with local regulatory requirements
| Nozzle tip size (inch/1000): | 13-19 |
| Nozzle pressure (minimum): | 150 bar/2100 psi |
| Nozzle tip size: | HVLP: 11–19 (inch/1000) / pressure pot: 1.1–1.9 (mm) |
| Nozzle pressure (minimum): | HVLP: 2.1 bar/30 psi / pressure pot: 2.1 bar/30 psi |
| Substrate Temperature | 0 °C | 5 °C | 10 °C | 23 °C | 40 °C |
| Touch Dry | 20 h | 10 h | 5 h | 3 h | 2 h |
| Walk-on Dry | 48 h | 12 h | 7 h | 4 h | 3 h |
| Minimum recoat interval | 32 h | 12 h | 7 h | 4 h | 3 h |
| Dry/cured to service | 20 days | 15 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 depend on the controlled temperature and relative humidity (30%–85%), as well as the average dry film thickness range of the product. Moisture may affect the curing rate due to the moisture-curing characteristics of the coating.
| 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.
Temperature
| Continuous | Peak | |
| Drying, atmospheric | 120°C | 140 °C |
Withstands peak temperatures for a maximum of one hour.
At the above temperatures, protective performance is unaffected, but appearance may be affected.
The product is recommended for coating systems in combination with the following JOTUN primers.
Previous coat:
Penguard Universal Reinforced Universal Abrasion-resistant Epoxy (0R5) Penguard Express Quick-drying High-build Epoxy (0VA) Jotamastic Smart Pack HB Easy-to-apply 1+1 High-build Primer (03N) Jotamastic 90 Surface-tolerant Abrasion-resistant Epoxy 90 (0D5) Jotamastic 90 WG Jotamastic Plus Alu For combinations with other coating systems, contact the local JOTUN office.
| Subsequent coat: | Itself |
|---|
| Volume | Container Size | |
| (L) | ||
| Hardtop One Moisture-cured Acrylic Polysiloxane Topcoat | 5/20 | |
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.
Hardtop One 12 months Moisture-curing Acrylic Polysiloxane Topcoat
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.
