Hempel Hempafire Extreme 550
Hempel Hempafire Extreme 550 is a two component epoxy solvent-free, chemically curing intumescent coating for passive fire protection of structural steel against cellulosic fires. Fire protection up to 4 hours. Optimized for the range of R30 to R120.
Best Uses
Hempafire Extreme 550 is used as intumescent fire protection for structural steel in both interior and exterior service conditions, up to Type X (EAD350402-00-1106 / EN16623) and C5 conditions (ISO 12944-2). It is suitable for I section beams, H columns, hollow sections and cellular beams. Also as a repair and touch-up coating for damaged areas of Hempafire Extreme 550. This product has wide coverage of protectable Hp/A, allowing the use of light steel sections for higher fire ratings.
Smooth surface and compatible with a wide range of topcoats, allowing the desired aesthetic finish of the steel.
Application
Always ensure the surface to be coated is fully prepped prior to application. Remove salts, detergents and other contaminants by high pressure fresh water cleaning. Remove oil, grease and other contaminants by suitable detergent cleaning and remove any dust, blast media and loose materials. The surface must be dry and clean prior to application.
Abrasive blasting to min. Sa 2½ (ISO 8501-1) / SP 10 (SSPC). For zinc coated surfaces use a non-metallic blast media (corundum,garnet, etc.). Minor areas can be cleaned by power tool to St 3 provided the surface is roughened and not polished.
Always use an approved primer.
The recommended application method is by Airless Spray.
For approved substrates other than Carbon Steel, the substrate may require other surface preparations, consult the application guide for detailed information on this and all application instructions, or speak to our Technical team if you require further assistance.
Surface & Environment
Hempafire Extreme 550 is designed for off-site (in shop) application conditions, along with on-site touch up application (if required). On site application requires specific attention. The product can be applied at substrate and ambient temperatures between +5°C and +50°C but for optimum results it is recommended in the range +15°C to +45°C.
The area where the intumescent is applied must be well ventilated and proper air circulation shall be secured for optimum drying. Hempafire Extreme 550 must be protected from condensation and water during application and drying.
IMPORTANT INTUMESCENT PRODUCT NOTE: Always contact Promain’s technical team prior to purchase to obtain a tailored project specification and the advice necessary. The information displayed on this website should only be used as a guide. Promain UK will not be held liable for any resulting damage to property, human life or monetary costs incurred due to incorrect specification, preparation, application or maintenance that has occurred due to negligence by either the purchaser or applicator. This includes your failure to have contacted us to obtain the relevant advice/specification.
Certificates & Approvals
- Assessed according to EN 13381-8, fire resistance of structural steel up to R240
- Tested and assessed according to BS 476-21: Standard for Fire Test on Building Materials and structures; determination of the fire resistance of loadbearing elements of construction. Up to R240
- CE marked product with European Technical Assessment (ETA)
- Third-party verified, product specific Environmental Product Declaration (Type III EPD, ISO 14025, EN 15804)
- Reaction to fire tested (as part of a coating system with approved primer and topcoat) according to EN13501-1 B-S1-d0
Features & Benefits
- Very competitive thicknesses resulting in reduced paint consumption and less coats to apply.
- Wide coverage of protectable Hp/A, allowing the use of light steel sections for higher fire ratings.
- Fire protection up to 4 hours. Optimized for the range of R30 toR120.
- Excellent durability towards mechanical damages, chemical resistance and weather exposure.
- Weather resistant and up to C5 conditions without topcoat. Topcoat only needed for aesthetic purposes.
- Smooth surface and compatible with a wide range of topcoats, allowing the desired aesthetic finish of the steel.
- Reduced application costs and fast process time, combining high DFT/coat with a reduced total PFP thicknesses to apply. Protection achieved in less coats.
- One product for most common steel sections to reduce complexity in application and specification.
- It has been approved and 3rd party certified according to EN13381-8 and BS 476-21. It has ETA with CE mark and ApplusFire approvals.
- Can be applied up to 3-5 mm (118-196 mils) dry film thickness per coat (depending on the set up), thus providing the required protection in less coats.
- Optimized to maximize throughput and DFT/coat with plural feed application equipment. Application with single leg equipment also possible for touch ups / small areas.
- Solvent free / 100% solids, product has very low VOC. Environmental Product Declaration with third-party certification is ongoing (Type III EPD, acc. to ISO 14025, EN 15804). Product can contribute to EPD credits for LEED and BREEAM projects.
- Complies with EU Directive 2004/42/EC, The Paints Directive on the limitation of volatile organic compounds: subcategory i.
Technical Info
| Components: | Two Components |
| Type: | Solvent Free |
| Finish: | - |
| Stock Colours: | Off white 15710 |
| Tintable: | No |
| VOC Content: | 9 g/L |
| Volume Solids: | 100% |
| Suitable Substrates: | Structural steel |
| Application Method: | Airless Spray, Brush, Trowel |
| Theoretical Coverage: | See application guide |
| Wet Film Thickness (WFT): | See application guide |
| Dry Film Thickness (DFT): | See application guide |
| Induction Time: | - |
| Pot Life: | 45 minutes at 20°C |
| Dry to handle: | 20 hours at 20°C |
| Overcoatable: | See "Drying & Overcoating Intervals" sheet included with the Application Guide. |
| Fully Cured: | - |
| Cleaner / Thinner: | After finishing the application, clean the equipment immediately with Hempel’s tool cleaner 99610 or Hempel’s thinner 08450. |
| Shelf Life: | 18 months from date of production unopened |
| Packaging: | Available in 18 Litres |
