Ronseal Diamond Hard Floor Varnish

  4.8/5.0 (136 reviews)
3 coats = Recommended
Total: enter area

Wood type and application method can vary coverage.

  • A quick drying varnish for hard wearing wood flooring
  • Offers a tough, durable finish, ideal for high traffic areas
  • Resistant to household chemicals
  • Enhances the natural colour and grain of the timber
  • Dries to a clear finish
  • Available in a range of sheen levels
  • Based on a polyurethane acrylate dispersion
Brand Ronseal
No. of coats 3
Coverage Up to 16 per litre
Drying time hrs
Size 2.5L
MPN 37539, 32583, 32582
GTIN 5010214875399, 5010214825837, 5010214825820

Ronseal Diamond Hard Floor Varnish is suitable for use over most soft and hardwood flooring, as well as hardboard, chipboard and wood composite.

Please Note: Not to be used over laminate floors. Not suitable for commercial environments such as pubs, restaurants, community halls etc.

For Unvarnished Floors:

  1. Existing coatings such as oils, waxes, stains must be removed by sanding the surface back to clean, bare wood. Do not use an abrasive paper finer than 120 grade for the final sand
  2. Vacuum sanded floorboards thoroughly to remove all traces of sanding dust
  3. Fill any holes or surface imperfections with a suitable wood filler

For Varnished Floors:

  1. Lightly sand existing floor varnishes with 120 grade sandpaper to provide a key
  2. Vacuum area to remove all traces of sanding dust
  3. Varnish in poor condition such as cracking, peeling and flaking should be completely removed back to bare wood

Always do a test area before starting any project to test product performance and results. Follow the manufacturer's instructions on the tin at all times. Ensure that the room temperature is above 10℃. Remove all furniture and allow for good ventilation.

  1. Diamond Hard Varnish should be stirred thoroughly before and during application to ensure a consistent finish
  2. Using a good quality brush, start in the corner furthest from the door and work along the length of 2 floor boards at a time
  3. Apply 3 coats of Diamond Hard to give the best protection, leaving 2 hours between each coat
  4. Before the 3rd coat, give the floor a very light sand by hand along the length of the floorboards with 240 grit sandpaper (don't use a floor sander)
  5. Wipe down with a slightly damp cloth to remove the sanding dust
  6. Then apply 3rd coat

Ronseal Hard Floor Varnish is touch dry within 30 minutes, with a re-coat time of 2 hours.

Regular Cleaning

For everyday cleaning, floors treated with Diamond Hard Varnish can be vacuumed and dry swept with a broom to remove any surface dirt or grit which might cause scratches to the finish. If the floor surface is stained or marked, a damp (not wet) microfibre cloth or mop may be used.

Deep Cleaning

For more stubborn marks, an appropriate floor cleaning solution may be applied. Always follow the manufacturer's instructions on the container.


To maintain the finish, simply apply a fresh coat of Ronseal wood floor varnish as required, following the Preparation and Application instructions.

136 customer reviews
Top product by HJ Meredith

Very easy to put on, good coverage - nice finish

Reviewed Satin on: 23/03/17
Used this before and it was quick drying with a beautiful finsh on the floor by Malcolm Hayes
Reviewed Gloss on: 15/03/17
Easy to use by Mark

This product is great to apply and clean up. It looks really good and didn't have to wait a long time between coats. It has the right amount of sheen and didn't colour or yellow the wood, just a little darker, but hardly noticable. As for being hard wearing- it seems resilient but I suppose we'll have to wait and see.

Reviewed Satin on: 14/03/17

Ronseal quality product .

Reviewed Satin on: 08/03/17
Very wide application range by Katy Gasparovicova

Brilliant top coat option for sealing oils.

Reviewed Matt on: 04/03/17
Easy to apply excellent long lasting finish by Universal Fitness Harwich
Reviewed Satin on: 03/03/17
This is by far the best floor finish I have used by D Coleman
Reviewed Satin on: 01/02/17
Great product by Patrick Bullock

Like all the Ronseal products it does what it says on the tin.

Reviewed Gloss on: 31/01/17
Not used yet by Gary Brown

Have used it before with good results

Reviewed Satin on: 21/01/17
Superb by Jon Baxter

Like the tv ads say- this product is exactly as described. Excellent.

Reviewed Satin on: 05/01/17
Quick Service by Jitesh Patel

Good product

Reviewed Satin on: 03/01/17
Excellent and easy to use by Allan Robinson

Gives a nice shiny finish, just what I wanted.

Reviewed Gloss on: 31/12/16
Excellent,would recommend this product by Glynis Lincoln

Easy to apply and dries quickly. Have used this before and wouldn't use anything else.Lovely finish ,and easy to clean.

Reviewed Satin on: 20/12/16
Easy to use Good colour by MRS J Zammit

The varnish was easy to use and the colour was a deep rich dark brown as required. I do not know how this finish will last with 3 dogs but we shall see.

Reviewed Satin on: 16/12/16
Great product Lovely finish by Michael Molloy

Would use again and recommend.Good price.

Reviewed Gloss on: 30/11/16
Product works well by Rowland White

It's Ronseal, it does what it says on the tin!

Reviewed Satin on: 16/11/16
Good finish by Mrs L Skuse

Easy to use

Reviewed Gloss on: 12/11/16
Best floor varnish on the market by Ryan
Reviewed Satin on: 02/11/16
Perfect by John Jones

Used to seal and sand floors after sanding... No complaints and would use again

Reviewed Satin on: 30/10/16
Used on a previously varnished floor by Keith Walker

Being water based you don`t expect it to compare with oil based but was amazed how good this product was, brilliant.

Reviewed Satin on: 27/10/16