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  • Thermoguard Fire Varnish 30 & 60min System Pack

Thermoguard Fire Varnish 30 & 60 Minute System

FV3060

Thermoguard Fire Varnish 30 and 60 Minute System is a clear intumescent varnish 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 manufacturers recommendations to the respective area in question.

For surface spread of flame protection (BS Class 1/0 & EN Class B s2 d0) instead see: Thermoguard Fire Varnish BS Class 1/0 & EN Class B System

See further below for representations of available translucent wood stains - these are shown in the colour picker as solid colours

**Available for delivery - see Delivery Options below**

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  • 250 char. max
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£156.24
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£168.74 Tax incl.
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Description

Thermoguard Fire Varnish 30 & 60 Minute System

Thermoguard Fire Varnish 30 & 60 Minute System is a clear intumescent varnish for interior and exterior timber surfaces. These packs have been created to help users ensure they are purchasing sufficient product for their project. Each pack contains the correct amount of basecoat (Fire Varnish Basecoat) and topcoat (Fire Varnish Overcoat) to enable protection to be achieved to the respective area in question.

Transparent Wood Stains (interior packs only)

Representations shown below; represented as solid colours in the colour picker further above.

Each component of the packs can still be purchased individually if required here: Thermoguard Fire Varnish Basecoat and here: Thermoguard Fire Varnish Overcoat (Interior) or Thermoguard Fire Varnish Overcoat (Exterior)

***IMPORTANT: Please see detailed information following the text in RED below***

For fire protection to doors, see Fire Door Upgrade Kits

For BS Class 1/0 & EN Class B s2 d0 only see Thermoguard Fire Varnish BS Class 1/0 & EN Class B System

Pack Contents

  • 6.5m² Pack (Interior Spec.) = 1 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Interior)
  • 6.5m² Pack (Exterior Spec.) = 1 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Exterior)
  • 13m² Pack (Interior Spec.) = 2 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Interior)
  • 13m² Pack (Exterior Spec.) = 2 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Exterior)
  • 20m² Pack (Interior Spec.) = 3 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Interior)
  • 20m² Pack (Exterior Spec.) = 3 x 20m² Fire Varnish Basecoat + 1 x 20m² Fire Varnish Overcoat (Exterior)

System

  • Apply 3 coats of Thermoguard Fire Varnish Basecoat @ 20m² per 20m² pack/per coat

Followed by either;

  • Internal Applications: 1 coat of Thermoguard Fire Varnish Overcoat (Interior) Matt or Satin @ 20m² per 20m² pack
  • External, Damp or High Wear Applications: 2 coats Thermoguard Fire Varnish Overcoat (Exterior) Matt or Satin - Each 20m² pack is sufficient to apply 2 coats to 20m² of surface.

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 (plus any other uncoated/vulnerable areas) to stop water ingress.

NOT suitable for the topside of floor surfaces that will be trafficked/walked on.

To achieve 30 and 60 minute protection minimum timber thicknesses apply of which approval must be sought before purchase.

For BS Class 1/0 & EN Class B s2 d0 ONLY see Thermoguard Fire Varnish BS Class 1/0 & EN Class B System

A gloss finish is available in batch quantities for large projects, contact us for details.

IMPORTANT - The below information from the manufacturer must be read and referred to your relevant authority for approval BEFORE purchase and use.

In line with good common practice, we recommend that approval be sought for the use of our system, outlining our justification for the issuing of the Fire Certificate prior to the product’s use.

Authorities generally accept our Fire Test evidence (copies available upon request) as justification for the provision of One Hour Fire Resistance in cases such as this for up to 1 Hour Fire Resistance, depending upon the thickness of board in question.

We have an indicative 30min Fire Test at a UKAS Fire Test Laboratory demonstrated 10mm loss to charring on plywood & MDF.

Our Fire Varnish BS EN Class B Test indicates that softwood did not burn significantly for the 20mins test duration and our previous Class O Part 6 Fire Propagation test indicates that protected softwood did not burn within the 10 minutes test duration.

Further in-house testing indicated that when applied at three times the Class B & Class O specification Fire Varnish intumescent added a total of 20 minutes Fire Resistance.

We assess projects requiring 30 or 60mins Fire Resistance on an individual basis, referring to the TRADA Char Rate Tables and calculated residual timber to ascertain whether we could issue a Fire Certificate for the project. A written specification should be obtained from the Technical Department for your project prior to use to ensure this system will be suitable. 

In order to enable us to issue a 30 minutes Fire Certificate in the case of softwood the surface must be able to afford the loss of 10mm depth from all surfaces exposed to a fire. For 60 minutes we assess based on 25mm loss during the fire.

For oak or similar woods the loss to take into account is 7mm for 30mins and 18mm for 60mins.

In other words, the residual timber should be adequate to in the case of:

  1. Underside of a floor to support the anticipated weight load on the floor.
  2. A timber ceiling under-drawing a floor and joists can be treated as sacrificial but should have protected the area above to 30mins
  3. A timber wall should still be able to support itself without the fire passing through to the area the other side.

Timber must be clean and thoroughly dry prior to application (maximum 18% moisture content).

Important Application Notes

The Thermoguard Fire Varnish System should only be applied to clean, dry wood (maximum 18% moisture content), with dry conditions during application and drying of basecoat and overcoat.

Thermoguard Fire Varnish Basecoat is a water-based 2 pack coating.

Thermoguard Fire Varnish Overcoat (Interior or Exterior grade) should not be applied unless the basecoat is dry. Drying time of the basecoat in good conditions is overnight. Once the basecoat has dried in good conditions the basecoat 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.

Delamination of overcoat caused by application to near-full cured basecoat has NEVER occurred when the overcoat was applied within 7 days. 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 replaced material removed during abrasion
  • Apply overcoat within the ideal window or as near to it as possible

Application to OSB/Sterling Board

Only surface spread of flame protection can be provided to OSB, for BS Class 1/0 & EN Class B s2 d0 ONLY see Thermoguard Fire Varnish BS Class 1/0 & EN Class B System for details.

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 ConditionsWe 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.

Product Details
FV3060

Data sheet

Application
Brush, Roller, Spray
Attachments
Download


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.


questions Nigel on 2019-10-01 10:17:10
Question: 

can this be used on Sikkens Filter 7 Plus – Ebony

Answer: 

Please see below the manufacturers recommendations (at the time of writing this response) when using the Thermoguard Fire Retardant Varnish system over existing wood stains.

Recommended;

Penetrating Wood Dyes / Spirit Stains based on low flash solvents (eg Xylene, Toluene, Alcohols). Benefits are – Quick drying, do not seal wood.

Acceptable;

Penetrating Wood Dyes based on Water (not water repellent). Precaution - wait for all water to come out of wood before overcoating.

Usable with Caution;

Nitrostain, White Spirit Penetrating stains (single coat of matt only). Precautions - Allow to dry thoroughly (up to 2 weeks for white spirit) Degrease with warm detergent solution necessary with some sanding required if a solid film has been formed.

Not Recommended;

Stains containing Water Repellents, Waxes, Oils, Coal Tar Distillates / by-products, satin or gloss woodstains or other stains which seal the wood or stains that deposit a weak film of underbound pigment. “Home recipes” combining stains and lacquers. N.B. Consult the Technical Department if these have been applied already or if in doubt.

Compatible Pre-Existing Coatings;

Long oil Varnish, Yacht Varnish or Polyurethane Varnish - Require thorough sanding to give a “key”, Non water-repellent organic solvent preservative (provided thoroughly dry). For others please consult the Technical Department.

Incompatible Surfaces;

Photographic faced hardboard, CCA “Tanalised” or water-repellent grade preservative treated timber. Emulsion paint, old “1st generation” type clear fire coatings*.

*If these may be present, contact Technical Department for specific advice, tests etc.

Paint;

Paint should be overcoated with a suitable Thermoguard Timbercoat system in chosen colour. Paints cannot be successfully coated with a clear fire varnish because adequate abrasion of hard or smooth paint damages the colour, while softer emulsions & acrylics cause the varnish to craze or shrivel.

questions Dominick Gallagher on 2019-07-18 15:35:54
Question: 

Will this product comply with the relevant sections of 13.3 and 13.5 of the JCoP for Fire Prevention in Construction if used for temporary accommodation constructed from standard 18mm plywood?

Answer: 

Thank you for your enquiry, before being able to answer your question please provide our Technical Team with some further information as below - 0113 2455450 (option 2) or [email protected]

  • Size of surface area to paint
  • Level of Fire Protection required (Class 1, Class 0, 30min, 60min, etc.)
  • Internal or external
questions Peter Scott on 2019-06-26 18:16:35
Question: 

I don't understand how one product can be 30 and 60 minutes. Does 60 need more coats?

Answer: 

The number of coats and product system is the same however projects are assessed on an individual basis, referring to the TRADA Char Rate Tables and calculated residual timber to ascertain whether a Fire Certificate can be issued for the project.

To ascertain whether your timber can achieve 30 or 60min protection please contact our Technical Team on 0113 2455450 (option 2) or [email protected]provide us with as much of the following information as possible;

  • Size of surface area to paint
  • Timber thickness
  • Level of Fire Protection required (Class 1, Class 0, 30min, 60min, etc.)
  • Type of timber (i.e. pine, mdf, plywood, etc.)
  • Type of Timber surface (i.e. T&G, feather edge / shiplap cladding, solid panels / sheets, etc.)
  • Internal or external
  • Use (i.e. floor, wall cladding, ceiling, etc.)
  • Clear or coloured coating required?
  • Bare or previously coated?
questions Eddie Attwood on 2019-01-12 14:35:20
Question: 

Can the product ref: FV3060 be applied over an existing varnished door (i.e. not need to be stripped) and do extra coats increase the fire rating minutes?

Answer: 

No, Thermoguard Fire Varnish 30 & 60 Minute System cannot be applied over existing varnish on a door but Envirograf Door Upgrade Varnish System can.

questions Dave Molyneux  on 2018-12-13 16:52:19
Question: 

Can this product (external) be over painted with a shed/fence type wood stain at a later date and still retain it's fire protection? Many thanks Dave.

Answer: 

No. Something like Zeroflame Fire Retardant Treatment can be overcoated with waterborne stains or varnishes as long as they are compatible, non-flammable and will dry. We always recommend to try a small sample area first to ensure the stain does not react with the Zeroflame Fire Retardant Treatment and will dry out. However this only achieves Euroclass B (BS Class 0) Fire Propagation and Spread of Flame fire protection and has to be applied to bare (not man-made) timber only.

questions David Molyneux  on 2018-11-26 10:46:57
Question: 

Can this product be used over timber that has been coated with a water based wood stain. Many thanks Dave.

Answer: 

Please see below the manufacturers recommendations (at the time of writing this response) when using the Thermoguard Fire Retardant Varnish system over existing wood stains.

Recommended;

Penetrating Wood Dyes / Spirit Stains based on low flash solvents (eg Xylene, Toluene, Alcohols). Benefits are – Quick drying, do not seal wood.

Acceptable;

Penetrating Wood Dyes based on Water (not water repellent). Precaution - wait for all water to come out of wood before overcoating.

Usable with Caution;

Nitrostain, White Spirit Penetrating stains (single coat of matt only). Precautions - Allow to dry thoroughly (up to 2 weeks for white spirit) Degrease with warm detergent solution necessary with some sanding required if a solid film has been formed.

Not Recommended;

Stains containing Water Repellents, Waxes, Oils, Coal Tar Distillates / by-products, satin or gloss woodstains or other stains which seal the wood or stains that deposit a weak film of underbound pigment. “Home recipes” combining stains and lacquers. N.B. Consult the Technical Department if these have been applied already or if in doubt.

Compatible Pre-Existing Coatings;

Long oil Varnish, Yacht Varnish or Polyurethane Varnish - Require thorough sanding to give a “key”, Non water-repellent organic solvent preservative (provided thoroughly dry). For others please consult the Technical Department.

Incompatible Surfaces;

Photographic faced hardboard, CCA “Tanalised” or water-repellent grade preservative treated timber. Emulsion paint, old “1st generation” type clear fire coatings*.

*If these may be present, contact Technical Department for specific advice, tests etc.

Paint;

Paint should be overcoated with a suitable Thermoguard Timbercoat system in chosen colour. Paints cannot be successfully coated with a clear fire varnish because adequate abrasion of hard or smooth paint damages the colour, while softer emulsions & acrylics cause the varnish to craze or shrivel.

questions Neil Kaiper-Holmes on 2018-09-22 13:52:32
Question: 

Can this be used on external decking?

Answer: 

No, Zeroflame Fire Retardant TreatmentThermoguard Thermoproof Exterior Fluid and Hydron Nu-Flame Clear Impregnation can all be used on exterior, bare, porous timber decking but these will only achieve BS Class 1/0 and/or Euroclass B and not 30/60min protection.

questions Rebecca Hibbert on 2018-08-20 17:28:17
Question: 

I have a single storey timber built annex that needs fire retardent applied externally to one side only. The area that needs protection is 70 foot long. I am thinking of purchasing the Thermoguard Fire Varnish 30 & 60 Minute System. Can you please advise how much I would need. Many thanks.

Answer: 

Could you advise what level of fire protection you require, the height of the area, the thickness of the wood to coat and whether it is bare or previously coated with something?

questions Constantine Petropoulos on 2018-04-24 19:35:13
Question: 

Does this product have a UL rating and does it meet ASTM standards?

Answer: 

Thermoguard Fire Varnish has NOT been submitted to either UL or ASTM for approval/testing.

questions Mark Lewis on 2018-03-11 13:28:36
Question: 

How do you issue a certificate do you come on site

Answer: 

After use, certification can be applied for HERE.

  

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