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Water-based intumescent paint system providing fire resistance to structural steel and cast iron with a minimum number of coats. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features.
- Optimised for CHS, SHS and RHS hollow sections
- See Thermoguard Thermocoat WI Ultimate for Universal Beams, Columns and other open section steel:
- For protection to exterior environment steels, please refer to Thermoguard Thermocoat S
- Up to 90 minutes’ fire resistance
- Can be overcoated with Thermoguard Flame Retardant Topcoat
- Water-based and low odour
- Certificate of supply available on request
- Can be applied by brush, airless spray or roller
Please note that this product is for Professional or Industrial Use ONLY and CANNOT be used without first receiving an application schedule from our Technical Department. Please see below.
Please Note: We strongly recommend Tricomb Plastic Wet Film Gauges are used to help ensure correct film thicknesses are achieved during application
Please note that this product CANNOT be used without first receiving an application schedule from our Technical Department. Please download and complete the 'Thermoguard Steel Enquiry Form' and return by email to [email protected]
If you have any questions regarding this process consult our technical department on 0113 2455450 (option 2).
Economy and Speed
Thermoguard Thermocoat WO Ultimate is a water-based intumescent paint system providing fire resistance to structural steel and cast iron of up to 90 mins with a minimum number of coats. A compatible decorative overcoat system ensures the system will enhance the building’s architectural and design features.
Thermoguard Thermocoat WO Ultimate is optimised for for CHS, SHS and RHS hollow sections:
See Thermoguard Thermocoat WI Ultimate for Universal Beams, Columns and other open section steel:
For protection to exterior environment steels, please refer to Thermoguard Thermocoat S.
It is designed for use on larger projects, where our technical team can advise the exact amount of Thermocoat required, keeping costs down and making application easier.
Thermocoat WI is a low odour, water-based coating, making it user and environmentally friendly. Thermoguard Flame Retardant Topcoats are 2010 compliant and safe to use in accordance with manufacturer’s instructions.
Quick Links - Click To Jump To Section:
- How it Works
- Fire Testing
- Fire Certification
- Preparation and Pre-Treatment
- Specification
- Application
- Recoating
- Spray Equipment
- Application Conditions
- Terminology
How it Works
The heat of a fire triggers a catalytic reaction, causing the expansion of an insulating char layer up to 50 times the paint thickness. This layer keeps the steel below its critical temperature, thus maintaining the structural integrity of the building.
Fire Testing
Product performance assessment based upon UKAS/EGOLF Fire Test Laboratory Certification to BS 476 Part 21 - Fire resistance to load bearing elements of structures.
Fire Certification
After use, a Certificate of Supply can be issued upon request for each specified project for insurance, Fire and Building Control Authority and Client Records. Click HERE to apply.
Preparation and Pre-Treatment
- Steel and cast iron should be free from rust and millscale and primed with Thermoguard Steel Fire Paint Primer to 75 microns DFT (or alternative good quality anti-corrosive primer compatible with intumescent paints) in accordance with manufacturer's instructions.
- Treat galvanised surfaces with Teamac Mordant Solution (T Wash) first before priming with Thermoguard Steel Fire Paint Primer.
- Thermoguard Steel Fire Paint Primer may be left without further overcoating or decorated with appropriate conventional paint where no fire resistance is required depending on level of exposure/environment.
Specification
- Dry Internal: Apply Thermocoat WO in accordance with film thickness schedule supplied by Technical Department to achiive 30, 60 or 90 minute protection.
- Visible or occasional modest damp internal areas: Also apply 1 good coat Thermoguard Flame Retardant Topcoat (available in Gloss or Eggshell finishes).
- Wet or External Under Cover: Apply 2nd coat Thermoguard Flame Retardant Topcoat (available in Gloss or Eggshell finishes).
- Full External Exposure - Contact Technical Department.
Application
- Thermocoat WO may be applied by brush, roller or airless spray. To achieve the best finish in the shortest time, spray application is recommended. Prior to application the contractor should contact the technical department and obtain an application schedule. To assist correct application in accordance with this schedule, a wet film gauge should be used, wet film gauges can be provided on request.
- Maximum wet film thickness per brush coat – 800 microns
- Maximum wet film thickness per spray coat – 1400 microns
Recoating
Brush/roller application
- Surface dry: minimum 2 hours
- Recoat: minimum 4 hours
- Overcoating with Thermoguard Flame Retardant Topcoat: minimum 10 hours
Spray application
- Surface dry: minimum 4 hours
- Recoat: minimum 10 hours
- Overcoating with Thermoguard Flame Retardant Topcoat: minimum 48 hours
Spray Equipment
Airless Spray Pump
Use equipment recommended by manufacturer for the application of high viscosity intumescent paints.
- Filter size 30 mesh. 10mm hose 3/8” diameter with no whip end
Tip Size
- Tip Size 319, 321, 419, 421
Care should be taken to clean filters regularly. Cleaning should be undertaken with water.
Application Conditions
- Maximum Relative Humidity 80%
- Minimum ambient temperature 4°C
- Minimum Steel Temperature 3°C above Dew Point
Steel Terminology
Fire Exposure
Steel Types
- CHS: Circular Hollow Section
- SHS: Square Hollow Section
- RHS: Rectangular Hollow Section
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions and should be applied only by an individual with the necessary expertise and experience. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
Data sheet
- Manufacturer
- Thermoguard
- For Use By
- Professional Use
- For Use By
- Industrial Use
- Interior / Exterior Use
- Interior Use
- Water / Solvent Based
- Water
- For Use On
- Steel, Cast iron
- Application Method
- Brush, Roller, Spray
- Colour
- Standard / Ready Mixed
- VOC Levels
- Ultra-Low (5-49 g/l)
- Single, Two or Three Pack
- Single
- Pack Size
- 2.5KG, 5KG, 20KG
- Coverage
- Refer to Technical Department
- Min. Application Temperature
- 4°C ambient temperature
- Touch Dry
- 4 hours
- Touch Dry
- Brush: min. 2 hours/ Spray: min. 4 hours
- UN Number
- N/A
- Dry to Recoat
- Brush: min. 4 hours/ Spray: min. 10 hours
- Dry for Topcoat
- Bush: min. 10 hours/ Spray: min. 48 hours
- Base Type
- Water-Based
- Suitable For Use On
- Cast Iron
- Suitable For Use On
- Structural Steel
- Finish
- Matt
- Application Method
- Brush
- Application Method
- Roller
- Application Method
- Spray
- Product Usage Type
- Basecoat
- Product Range
- Thermocoat
- Best Seller
- Best Seller
- Fastest Delivery
- Next Working Day
- Colour Family
- White
- Fire Rating
- 30 Minutes
- Fire Rating
- 60 Minutes
- Fire Rating
- 90 Minutes
- Site Application
- On-Site
Questions
Question about the product
Andrew on 2024-08-01 13:08:44 | Question:
Hello, can this product be applied to steals that are already coated with a zinc phosphate primer |
Answer from Rawlins’ Technical Team:
Thank you for your enquiry, please could you complete and return the Steel Enquiry Survey Form via the attached link to allow us to assist further with your enquiry. Thermoguard Fire Application Forms | Rawlins Paints Please return via e-mail to [email protected] If you know the name of the Primer previously applied to the steels, pelase confirm this on response so it allows us to check the compatibility with Thermoguard's system. | |
David on 2024-06-05 18:50:22 | Question:
Do the steel posts need to be bare metal or can this be applied over red oxide paint? |
Answer from Rawlins’ Technical Team:
Thank you for your enquiry, we have replied direct via e-mail with further information. | |
michael on 2024-05-01 10:37:33 | Question:
can this product be applied over steels that have a red oxide coating on already? |
Answer from Rawlins’ Technical Team:
Thank you for your enquiry, we have contacted you directly via e-mail to request more information. | |
jenny Goss on 2022-04-04 11:50:48 | Question:
Can this be overcoated with a 'normal eggshell' for future redecoration |
Answer from Rawlins’ Technical Team:
Please note this product is part of a system and must be used in conjunction with compatible primers and topcoats to achieve a level of fire protection. The topcoat that must be used with this product is Thermoguard Flame Retardant Topcoat and this cannot be substituted for any other product. It is available in many RAL, BS or NCS colours in a gloss or eggshell finish. | |
IMPORTANT SHIPPING & DELIVERY INFORMATION
Thermoguard Thermocoat WO Ultimate is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
Thermoguard Flame Retardant Topcoat
An oil based, decorative flame-retardant paint with 4,000+ colours used to decorate and complete Thermoguard fire protection upgrading systems. BS476 Part 7; Class 1 surface spread to flame BS476 Part 6; Fire propagation Designated Class 0 in accordance with U.K. Building Regulations Metallic colours (steel, gunmetal) available in...
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Etching agent, formulated to enhance paint adhesion on galvanised surfaces. For new or weathered galvanising. Also applicable on weathered surfaces with some limitations. Ideal for paints that struggle with adhesion on untreated zinc.
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