A clear intumescent varnish that is the first coat of a 2 coat system (3 coats externally) for the decorative Fire Protection of timber and timber derived substrates to BS Class 1, Class 0 and EN Class B s2 d0. See Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior) to complete the system.
Complete systems including basecoat and overcoat can be found here;
Please note: Professional Use Only. Should not be used without first receiving an application schedule from our Technical Department. Please see below.
Please note that this product CANNOT be used without first receiving an application schedule from our Technical Department. Please download and complete the 'Thermoguard Wood 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).
Thermoguard Fire Varnish is a varnish system with the option of a clear or stained finish for the Fire Protection of timber and timber derived substrates to BS Class 1 and Class 0 Surface Spread of Flame as well as BS EN Class B s2 d0 (for 30 or 60 minutes Fire Resistance see Thermoguard Fire Varnish 30 & 60 Minute System). The special formula provides a tough, durable finish to internal and external wood. Clear or stained overcoats enhance the natural beauty of the wood while fire protecting new/bare surfaces. Thermoguard Fire Varnish Overcoat (Interior) and Thermoguard Fire Varnish Overcoat (Exterior) provide protection against UV and wear.
The Thermoguard Fire Varnish System is made up of Thermoguard Fire Varnish Basecoat (a two component, water based product consisting of a base and activator mixed together before use - see image above) which is a clear, intumescent varnish to be finished with Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior) available in a clear or stained matt or satin finish. Thermoguard Fire Varnish Overcoats provide protection against UV and wear whilst Thermoguard Fire Varnish Basecoat provides the Fire Protection.
Restricted to professional users. Not for sale to, or use by, the general public.
When exposed to fire, the Thermoguard Fire Varnish System expands to create an insulating barrier, protecting timber surfaces from flames, heat and oxygen and suppressing emission of deadly smoke & gasses.
2023 compliant BS Class 1 and Class 0 Surface Spread of Flame as well as BS EN Class B s2 d0 (for 30 or 60 minutes Fire Resistance see Thermoguard Fire Varnish 30 & 60 Minute System)
Prepare and apply – (INTERIOR)
Prepare and apply – (EXTERIOR, DAMP, HIGH WEAR AREAS or FRUITWOODS)
Please note: Timber must be clean and thoroughly dry prior to application (maximum 18% moisture content). Any gaps should be sealed with Thermoguard Intumescent Mastic. Fire should be prevented from accessing unprotected wood surfaces and for external applications it is recommended wood has been sealed on the reverse face to stop water ingress.
NOT suitable for the topside of floor surfaces that will be trafficked/walked on.
Available Pack Sizes
Application by painters, decorators & other professional users only. Refer to instructions on Fire Varnish Base & Overcoat containers.
The Thermoguard Fire Varnish System can be applied over firmly adhered standard clear varnish. For existing stained varnishes, stain coatings, old fire coatings or if in doubt, contact our Technical Department on 0113 2455450.
*Allow adequate time for stain or preservative fluids to escape before applying the Thermoguard Fire Varnish System.
Note - For 30 or 60 mins Fire Resistance see Thermoguard Fire Varnish 30 & 60 Minute System.
For fire protection to doors, see Door Upgrade Products.
Thermoguard will issue a Certificate of Supply upon request for each correctly specified project for Insurance, Fire and Building Control Authority and Client Records against proof of purchase. After successful application of a complete system a certificate can be applied for HERE
Application to OSB/Sterling Board
This is a board made of chips of wood glued together to form a hard non-decorative board. If it needs fire coating, Thermoguard Fire Varnish or Thermoguard Timbercoat BS Class 1/0 & EN Class B System can be applied to it to provide surface spread of flame protection ONLY (BS Class 1/0 and EN Class B). However we first recommend a test is carried out by applying a small amount of the proposed coating to the board to check for "cessing" / "cissing" (where coating gathers together in lumps and may leaving bare patches between). If this occurs the board should be degreased/cleaned and allowed to dry before testing again - if this still does not provide a satisfactory application please contact our Technical Team for further advice on 0113 2455450 (option 2) or send a message to [email protected].
The Thermoguard Fire Varnish System should only be applied to dry wood, with dry conditions during application and drying of basecoat and overcoat. Thermoguard Fire Varnish Basecoat is a water-based 2 pack coating.
After Mixing Allow to Stand for 30-60mins before use.
Apply to a small test area before applying generally.
Use within 4 hours of mixing.
Apply 1 or 2 coats, ensuring the correct amount applied relative to the coated area.
Important Note: Ensure good air movement & ventilation with dry conditions before and during the application, until over-coated.
Drying
Minimum drying time 8 hrs.
Ensure the basecoat is hard dry at the time you apply the overcoat.
Drying time of the basecoat in good conditions is overnight.
Once the basecoat has hard dried, it remains ideal to overcoat for a further 4 days. Thereafter, the basecoat becomes gradually harder, until it reaches a point where the overcoat may not obtain a good bond.
Thermoguard therefore recommend overcoating when basecoat is dry, within the following 4 days in good conditions.
Note: The longer the delay beyond '4 days after basecoat has dried' (so typically 5 days after application), the greater the risk of overcoat delaminating. If overcoating is delayed notably beyond 7 days after the basecoat was dry, it is advised; Basecoat is abraded to obtain a key with 120 grit abrasive Apply a light coat of basecoat to replace material removed during abrasion then apply overcoat within the ideal window or as near to it as possible.
During application & drying of the full system:-
Cleaning
Return as much unused material to its original container as possible. Wash brushes, rollers and guns with Clean Water immediately following use.
Health & Safety
Please refer to the relevant Safety Data Sheet for full details of this product. Apply all products in accordance with BS 6150:2019- Code of practice for painting of buildings. Do not store this product in cold temperatures below 5°C or above 30°C.
Further Support
If you require any further assistance, please contact our Technical Team on 0113 2455450 (option 2) or email [email protected]
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.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
 DC on 2022-01-13 12:23:42 | Question: Hi Is there anyway to thin the base coat as it seems extremely thick and is quite difficult to apply via brush and leave a good sagless finish ? Thanks |
Answer from Rawlins’ Technical Team: For brush application this product should not be thinned, but having the materials at room temperature for 24 hours prior to application will help with the thickness. For spray application clean water can be added to achieve a sprayable viscosity. | |
| Rob Small on 2019-10-28 23:39:52 | Question: 1. Can Thermoguard Fire Varnish Basecoat be overcoated with a polyurethane varnish (Bona Mega) instead the of the Thermoguard topcoat? I would like to be able to match existing finishes. 2. Once the activator is added to the Thermoguard Fire Varnish Basecoat what is the product's working time before it goes off? Ideally I would like to be able to apply the basecoat to plywood sheets in batches. |
Answer from Rawlins’ Technical Team: Thermoguard Fire Varnish Basecoat MUST be overcoated with either Thermoguard Fire Varnish Overcoat Exterior or Interior grade and nothing else. I would suggest the best course of action would be to call our Technical Team on 0113 2455450 (option 2) to discuss your project and it's requirements as we should have a way for you to achieve what you require. | |
| james watt on 2018-10-15 11:46:23 | Question: Can this be put over painted wood ? |
Answer from Rawlins’ Technical Team: No, but if you contact our Technical Team on 0113 2455450 (option 2) or [email protected] with your full requirements we may be able to provide a solution for you. | |
| Robert Harris on 2016-11-10 20:02:28 | Question: Hi Does the clear varnish product turn a mdf veneered board from no fire Protection to 30min protection?Is there a choice of satin or gloss finish too? Is the varnish fully clear or is lightly tinted? |
Answer from Rawlins’ Technical Team: Thermoguard Fire Varnish Basecoat provides BS Class 1, Class 0, EN Class B s2 d0 protection to timber and timber derived substrates. It is a clear varnish (not lightly tinted) available in matt, satin or gloss finishes. 30min protection can be achieved using the Thermoguard Fire Varnish System but approval must first be sought from the governing authority on the project for information provided by our Technical Department. To receive a 30min specification and supporting documentation for submission, please contact our Technical Team on 0113 2455450 or [email protected]. | |
Thermoguard Fire Varnish Basecoat 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
General Painting Application Kit from Rawlins Paints provides the basics for any painting project. Whether it is a one off job, or you just want to make sure the right application tools get to site.Provides an economical way of making sure you will have what you need Ideal for interior and exterior paint projects Click to jump down to...
£12.04 (incl. VAT)
£10.03 (ex. VAT)
4,000+ coloured fire retardant paint system for interior and exterior timber surfaces. Each pack contains the correct amount of basecoat (Thermoguard Timbercoat Insulating Basecoat) and topcoat (Smoke & Flame Retardant Dualcoat) to ensure protection is achieved in line with the manufacturers recommendations to the area in question....
£214.45 (incl. VAT)
£178.71 (ex. VAT)
A clear fire retardant varnish for interior and exterior timber surfaces. Important!For use on timber with a minimum thickness of 9mm. Woodstains are only available on the following shipping options:Express: 1-3 Working Days Delivery (Thermoguard DS) Economy: 7-10 Working Days Nationwide DeliverySee further below for...
£218.32 (incl. VAT)
£181.93 (ex. VAT)
A clear intumescent varnish (with 9 woodstain shades available) for interior and exterior timber surfaces. Each pack contains the correct amount of basecoat (Fire Varnish Basecoat) and topcoat (Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior)) to ensure protection is achieved inline with the...
£218.32 (incl. VAT)
£181.93 (ex. VAT)
A decorative lacquer for use over Thermoguard Fire Varnish Basecoat for exterior surfaces. Restricted to professional users. Not for sale to, or use by the general public.Each 20m2 pack of Thermoguard Fire Varnish Exterior Overcoat is sufficient to apply the required 2 coats to 20m2 of surface areaPlease note should you be unsure...
£144.90 (incl. VAT)
£120.75 (ex. VAT)
