Sherwin Williams Firetex FX5000 - Formerly Leighs FX5000

Non Hazardous
A single pack, water based, TCEP free film intumescent coating to protect structural steel against fire for up to 60 minutes.
Available in 20 Litres in White
£418.33 £348.61
In stock
Product Description

Sherwin Williams Firetex FX5000 - Formerly Leighs FX5000 is a single pack, water based, TCEP free film intumescent coating to protect structural steel against fire for up to 60 minutes.

Best Uses

Firetex 5000 is formulated to provide up to 60 minutes fire protection to structural steel. For use in internal dry controlled environments without topcoat (C1 according to ISO 12944-2:1998) and internal semi controlled environments with topcoat (C2 according to ISO 12944-2:1998)


Must not be applied directly to galvanized steel and zinc rich primers. Recommended application method via airless spray or brush. Thin with water but thinning with have an adverse effect on sag tolerance. If can be guaranteed that application and subsequent in-service conditions will be in a C1 environment as defined in ISO 12944-2:1998, then no topcoat is required. FIRETEX FX5000 must be applied in a dry internal environment. It must not be exposed to condensation, damp or wet conditions during or after application. In conditions of high relative humidity good ventilation conditions are essential. Substrate temperature shall be at least 3°C above the dew point and always above 0°C. At application temperatures below 10°C, drying and curing times will be significantly extended, and spraying characteristics may be impaired. A minimum ambient air temperature of 5°C is required to ensure proper film formation.

Recommended topcoats include Sher-Cryl M770, FIRETEX M71V2, Acrolon C137V2 or C237. Macropoxy M630V2 can be used for internal areas where regular water washing down for hygiene reasons is required. Maximum temperature of water used should be not more than 60°C and water ponding on the coated steelwork must be avoided.

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 Limited 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.

Technical Details


  • Certifire Approved – Certificate CF383 (This product has been assessed in accordance with the Criteria of Acceptability given in the ASFP/BCF Industry Guidance Document
  • For cellular beam fire protection, consult Promain's Fire Estimation and Engineering Team
  • Unlike many other water based intumescent coatings, FIRETEX FX5000 does not contain tris-chloro ethyl phosphate (TCEP). TCEP is a category 3 carcinogen which would cause products to be classified as harmful since FIRETEX FX5000 is TCEP free, it is not classified as harmful by the Chemicals (Hazard) Information and Packaging for Supply Regulations 2002.

Technical Info

Components: Single Pack
Type: Water Based Intumescent
Finish: -
Stock Colours: White
Tintable: No
VOC Content: 55 gms/litre
Volume Solids: 70 ± 4%
Suitable Substrates: Structural Steel
Application Method: Brush, Airless Spray
Theoretical Coverage: See separate sheets of FX5000 loading requirements
Wet Film Thickness (WFT): Spray: 1400 microns, Brush: 429 microns
Dry Film Thickness (DFT): Spray: 1000 microns, Brush: 300 microns
Induction Time: -
Pot Life: -
Touch Dry: 3 hours at 15°C
Overcoatable: 6 hours at 15°C
Fully Cured: -
Cleaner / Thinner: Wtaer - Thinning will have an adverse effect on sag tolerance.
Shelf Life: 6 months from date of production unopened or 'use by' date where specified
Packaging: Available in 20 Litres

The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.

Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.

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