Nu-Flame Clear Overcoat
  • Nu-Flame Clear Overcoat

Hydron Nu-Flame Clear Overcoat

HPC 97

Nu-Flame Clear Overcoat is a clear varnish finish coating with flame retardant qualities for application onto timber surfaces. Tested to BS476 Part 7 Class 1 surface spread of flame and BS476 Part 6 Fire propagation.


  • Protects against humidity, heat and wear and tear
  • Satin and Gloss finishes available
  • 12m²/Litre coverage

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

VAT excluded

£119.70 Tax incl.


Nu-Flame Clear Overcoat is a clear varnish finish coating with flame retardant qualities for application onto timber surfaces, to complete the system and protect the Nu-Flame Intumescent Varnish or Nu-Flame Clear Impregnation. This overcoat has the added benefit of being able to be applied on top of previously varnished timber.

Tested to BS476 Part 7 Class 1 surface spread of flame and BS476 Part 6 Fire propagation. Designated Class '0' to current Building Regulations when used in conjunction with Nu-Flame Intumescent Varnish.

Product Use in the Workplace

  • Homes - A fire in the home not only destroys possessions, it destroys memories and things that cannot be replaced. Add to that the hassle and pain of dealing with the insurance company and being homeless, protecting from fire damage is a very sensible move. Apply this coat onto timber surfaces (e.g. trusses).
  • Log Cabin - Wood, wood everywhere. Wood is food for fire. Many log cabins are heated through log burners which present immediate risk since a fire already exists in the cabin. Along side a keen concern for safety, making the timber flame retardant should be on the list. As an added bonus, you also have the peace of mind that this coating is not harmful to the environment.

Features & Benefits

  • Protects the intumescent varnish when subjected to humidity.
  • Protects against heat and general wear and tear.
  • Satin and Gloss finishes available.
  • Touch dry in as little as 1 hour.
  • 12m²/Litre coverage.


Abrade all surfaces to provide a key. Ensure surface is clean and free from surface moisture.


By brush/roller or conventional spray Maximum relative humidity during application and drying 75%. Minimum temperature during application and drying 8°C. Minimum surface temperature 3°C above dew point. All equipment should be cleaned as follows:

Water Based Overcoat – Water

Solvent Based Overcoat – White Spirit

Store away from direct sunlight and sources of heat. Protect from frost.

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
HPC 97

Data sheet

Brush, Roller, Spray
12m² / Litre
Touch Dry
Water Based - Touch: 1 Hour. Overcoat: 12 Hours
Solvent Based - Touch: 4 Hours. Overcoat: 12 - 24 Hours

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 EDGAR PEACHMENT on 2021-04-25 07:40:56

Is Nu-Flame Clear suitable for external use over existing stained shiplap boarding


Hydron Nu-Flame Clear Impregnation is only suitable for application on to bare timber, not stained timber I'm afraid. Following application of Nu-Flame Clear Impregnation, a compatible water based stain can be applied.

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