Hempatop Repel 800

PRODUCT DATASHEET

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PRODUCT CHARACTERISTICS

Recommended use

Hempatop Repel 800 is designed to be used as the top coat in a two coat system with Hempel’s Hempadur Avantguard 770, activated zinc epoxy primer, for demanding C5 and CX environments as defined by ISO 12944-2:2018.
Suitable for structural steel, pipe, vessels, minimum two meters above the splash zone.

Service temperature

• Maximum, dry exposure only: 120°C [248°F].

Features

• Outstanding corrosion resistance.
• Excellent mechanical properties including impact resistance and flexibility.

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PRODUCT SAFETY

Flash point

42°C [108°F]

VOC content mixed product

Legislation	Value
EU	589 g/L [4.92 lb/US gal]
US (coatings)	15 g/L [0.13 lb/US gal]
US (regulatory)	36 g/L [0.30 lb/US gal]
China	589 g/L [4.92 lb/US gal]

According to specific legislation, see details in the Explanatory Notes available at Hempel website, hempel.com or at your local Hempel website. Measured according to GB/T 23985-2009.

Handling

Handle with care. Before and during use, observe safety labels on packaging and paint containers and follow all local and national safety regulations. Always consult Hempel’s Safety Data Sheet for this product along with the Product Data Sheet.

For professional use only.

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PRODUCT DATA

• Product code: 55540
• Product components: Base 55549, Curing Agent 98990
• Standard shade / code: Light grey 17380 **
• Gloss: Flat
• Volume solids: 60 ± 2%
• Specific gravity: 1.4 kg/L [11 lb/US gal]
• Reference dry film thickness: 200 micron [8.0 mils]

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SURFACE PREPARATION

Cleanliness

• According to Hempel’s Specification.

New build

• According to Hempel’s Specification.

Maintenance and Repair

• According to Hempel’s Specification.

Consult Hempel’s separate Surface Preparation Guidelines for more details.

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APPLICATION

Mixing ratio

Base 55549 : Curing Agent 98990 (4 : 1 by volume)
Stir well before use.

Thinner

Hempel’s Thinner 08080, Hempel’s Thinner 08680

Cleaner

Hempel’s Thinner 08450

Pot life

Product temperature	Pot life
30°C [86°F]	60 min

Application method

Tool	Application parameters
Airless spray	Nozzle pressure: 150 bar [2200 psi], Nozzle orifice: 0.015-0.017″
Brush	Not Applicable
Air spray	Not Applicable

If brush or roller application is used, more coats will be necessary to achieve the specified dry film thickness. Spray data are indicative and subject to adjustment. Pressure is for a material temperature of 20°C [68°F].

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FILM THICKNESS

	Low	High	Recommended
Dry film thickness	175 micron [7.0 mils]	250 micron [10 mils]	200 micron [8.0 mils]
Wet film thickness	293 micron [12 mils]	419 micron [17 mils]	335 micron [13 mils]
Theoretical spreading rate	3.4 m²/L [139 sq ft/US gal]	2.4 m²/L [98 sq ft/US gal]	3 m²/L [122 sq ft/US gal]

Product may be specified in another film thickness than indicated depending on purpose and area of use. This will alter spreading rate, drying and curing time and overcoating interval. For best performance, avoid excessive film thickness.

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APPLICATION CONDITIONS

• To avoid condensation, apply on a clean and dry surface with a temperature that is at least 3°C [5°F] above the dew point.
• Surface temperature must be above 15°C [59°F] during application and curing.
• The film formation may be adversely affected by light rain, high humidity and/or condensation during application and the following interval after application: “6 hours, 20°C/68°F”.

RELATIVE HUMIDITY

• Relative humidity must be below 85% during application.

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DRYING AND OVERCOATING

Product compatibility

• Previous coat: Recommended product is: Hempadur AvantGuard 770
• Subsequent coat: None or according to Hempel’s specification. Recommended product is: Hempatop Repel 800, Hempathane HS 55610

Drying time

Surface temperature	Touch dry hours	Hard dry hours
20°C [68°F]	3½	6
30°C [86°F]	2½	3

Determined for dry film thickness 200 micron [8.0 mils] at standard conditions, see Hempel’s Explanatory Notes for details.

Overcoating

Quality name	10°C [50°F]	20°C [68°F]	30°C [86°F]
Atmospheric severe Min / Max	4½ h / Ext*	2 h / Ext*	80 min / Ext*

Ext*: Depending on the actual exposure conditions, the coated surface is overcoatable for an extended period of time. Contact your local Hempel representative for advice.

Hempel’s specification supersedes any guidelines indicated in the overcoating table.

Drying conditions

• To obtain the drying time stated, it is important to maintain sufficient ventilation during application, drying and curing.
• Condensation on the freshly applied coating should be avoided.

Overcoating details

• The surface must be dry and clean prior to application.

Other remarks

• Hempel’s Specification supersedes any recommendations given in the Product Data Sheets.

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STORAGE

Shelf life

Ambient temperature	Base	Curing Agent
25°C [77°F]	24 months	24 months

Shelf life from date of production, when stored in original, unopened containers. Thereafter, the product quality must be re-inspected. Storage at elevated temperatures may reduce shelf life. For advice, please consult Hempel.

Storage conditions

• The curing agent is sensitive to moisture. Store in a dry place and keep the can tightly closed until use.

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CARBON FOOTPRINT

Dry film thickness	GWP (Global Warming Potential)
1 µm	12.9 g CO₂e/m²
1 mil	0.067 lb CO₂e/ft²

The carbon footprint is for 1 square meter / square foot of surface area with a dry film thickness of 1 micron / mil. The scope includes raw materials, in-bound transport to the Hempel factory, Hempel manufacturing processes, and any Volatile Organic Compounds emitted during and after the application of the product. It is calculated based on the standard shade defined in this PDS. Values may vary with shade.

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REFERENCES

Product Data Sheet – Hempatop Repel 800
Issued by Hempel A/S – May 2025
Document Version: 4/4
Source: https://www.hempel.com

Technical Guidelines and Explanatory Notes
Last accessed: 28 May 2025
Reference link: https://www.hempel.com/service-and-support/technical-guidelines

Note: Always consult the latest version of the Product Data Sheet and associated documents directly from Hempel’s official website to ensure accuracy and compliance with the most current recommendations.