Blackfriar Polyurethane Varnish


Transform interior woodwork with Blackfriar Polyurethane Varnish. This tough and durable varnish brings out the natural grain and colours of wooden surfaces – and protects them from household stains including hot water. For all types of interior wood, tough and durable, resists hot water splashes and dilute acids, solvent based.

Bulk Buy

£18.81 tax excl.

£22.57   tax incl.

Product Description

Transform interior woodwork with Blackfriar Polyurethane Varnish. This tough and durable varnish brings out the natural grain and colours of wooden surfaces – and protects them from household stains including hot water.

Performance Characteristics

  • For all types of interior wood
  • Tough and durable
  • Resists hot water splashes
  • Resists dilute acids
  • Solvent based


Ensure surface to be varnished is clean, dry, sound and free from wax, oil or any other contamination. If wax has been used clean the surface thoroughly with white spirit prior to sanding. Bare wood should be sanded to a smooth surface, always working with the grain. Sound previously varnished surfaces should be lightly sanded to provide a key. Remove dust. Existing varnished surfaces which are unsound or in poor condition can be stripped back to bare timber with Blackfriar Professional Paint and Varnish Remover.


Stir thoroughly with a broad stirrer prior to use. The product may be applied by brush or roller. If applying by brush, apply evenly using light strokes following the grain of the wood. If rollering, use a short nap mohair roller. For best results 3-4 coats are recommended on new wood and 2-3 coats on previously varnished surfaces. Prior to application of the final coat or if the overcoating time is exceeded lightly abrade with fine glass paper working with the grain and remove dust.


  • Do not use over French polish.
  • The matt finish is not suitable for use on floors.
  • Not suitable for use on plastic type materials, eg. imitation wood.
  • If using a coloured finish: Apply the material as evenly as possible to maintain an overall consistent colour.
  • The final shade of the varnish depends upon the original colour and the absorption of the timber we recommend to test for shade on an off-cut or inconspicuous area.
  • If using two tins we recommend mixing them to ensure an even shade is obtained.
  • Before applying varnish to floors we recommend a trial application on an inconspicuous area of the floor. Once dried check adhesion with a sticky tape. This is essential, particularly when applying to cork tiles, pre-finished tiles or laminate flooring.

Drying Times

Touch dry in 2 - 4 hours. Recoat after 16 hours and within 3 days.

Drying times are based on an ambient temperature of 20°C and 50% relative humidity. Lower temperatures or higher humidity will prolong the drying and overcoating times.

It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.

Technical Data

Typical Coverage (per coat)14m² per litre
Touch Dry2-4 Hours
ApplicationBrush, Roller
The figures stated above are approximate. Please ensure you refer to all datasheets for full application information.


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 Cat McLeod on 05/06/2017
Question: Can you tell me if you have the Dark Oak SATIN finish in stock, as I heard that this colour/product is being discontinued?

All colours for Blackfriar Polyurethane Varnish are only available in a gloss finish. Matt and Satin finishes are available in Clear only.

questions Gwyneth Depport on 04/12/2016
Question: Can I apply this varnish successfully onto a surface already treated (3 thin coats) with Black Friar Quick Drying Varnish?

Yes Blackfriar Polyurethane Varnish can be applied over the Blackfriar Quick Drying Varnish.

Abrade lightly with a fine grade of sandpaper to give a key to the surface. Do not thin the Blackfriar Polyurethane Varnish before use but apply in thin layers.

questions Sheila Marshall on 17/10/2016
Question: Can I successfully mix two colours of the Blackfriars Polyurethane varnish?

This should be OK, the colours will be compatible with each other but always best to try a small test first to check the ratios to get the best colour.

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