Ronseal Diamond Hard Floor Varnish

  4.9/5.0   209 reviews

You'll need enter area above for 3 coats (Recommended)

Wood type and application can vary coverage

  • A quick drying, water-based varnish for all interior wooden flooring
  • Offers a tough, durable finish, ideal for high traffic areas
  • Protects against knocks, scratches and spillages
  • 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
  • Sweet odour
  • Medium V.O.C content
Brand Ronseal
No. of coats 3
Coverage Up to 16 per litre
Drying time hrs
Size 2.5L, 5L
MPN 37539, 32583, 32582, 37540, 33608, 33607
GTIN 5010214875399, 5010214825837, 5010214825820, 5010214875405, 5010214836086, 5010214836079

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

Please Note: This product is not suitable for use on laminate floors or for commercial environments such as pubs, restaurants, community halls etc.

Alternative Ronseal Products

Product Use
Ronseal Diamond Hard Coloured Floor Varnish A coloured varnish for interior flooring
Ronseal Diamond Hard Floor Paint An opaque, coloured floor finish
Ronseal Diamond Hard Interior Varnish A clear varnish for interior wooden surfaces, such as furniture, doors and skirting boards
Ronseal Diamond Hard Coloured Interior Varnish A coloured varnish for interior surfaces such as furniture, doors and skirting boards, available in a Matt, Satin or Gloss finish

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. Wipe over with white spirit and allow to dry
  4. Fill any holes or surface imperfections with Ronseal High Performance Wood Filler or Ronseal Multi Purpose 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. Wipe over with white spirit and allow to dry
  4. Old varnish coatings in poor condition should be completely removed

Always do a small test area before beginning any project to assess product performance and results. Follow the manufacturer's instructions on the tin at all times.

Do not apply at temperatures below 10℃. Allow for good ventilation. Stir contents of the tin thoroughly before and during application to ensure a consistent finish.

  1. Using a good quality synthetic brush, start in the corner furthest from the door and work along the length of 2 floor boards at a time
  2. Apply the varnish evenly and finish in the direction of the wood grain
  3. For best results, start in the corner furthest from the door and work along the length of 2 floor boards at a time to avoid overlaps
  4. Avoid over-brushing as this will spread the finish too thinly and affect performance
  5. Apply 3 coats of Diamond Hard Varnish to give the best protection, leaving 2 hours between each coat
  6. Before the final coat, lightly rub down with 240 grade abrasive paper, then wipe over with a damp lint-free cloth and allow to dry

Ronseal Diamond 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 Ronseal Diamond Hard Floor 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, apply a fresh coat of Diamond Hard Varnish following the Preparation and Application instructions, as and when required.


To spot repair any scuffs or marks to the finish, simply clean the affected area and apply a fresh layer of varnish to the damaged area(s).

209 customer reviews
Best product available if u want a low/no sheen varnished flioor by Hema Jackson

Really good product, low odour, dries quickly and gives the floor a really good, natural finish (we stained our floorboards first and then applied 3 coats of Matt varnish)

Reviewed 2.5L, Matt on: 11/06/18
Nice finish by Jeff

Lovely too use and covers great. Only downside is the thickness which is very watery. The shine can be built up with the number of applications and the finish is very satisfying.

Reviewed 2.5L, Satin on: 22/05/18
Very good by Jerry Ellis

Covers well...dries quickly...very pleased with result

Reviewed 5L, Satin on: 09/05/18


Reviewed 2.5L, Matt on: 27/04/18
Easy to use by Dennis Crossland

Goes on well and the brushes are easy to clean afterwards.

Reviewed 5L, Matt on: 13/04/18
Good quality and easy to use by Mark Alred

The varnish was very straight forward to apply and the quick drying time between coats was very convenient.

Reviewed 2.5L, Satin on: 08/04/18
One of the best by John Morris

Does what it says easy to use prep is lmportant

Reviewed 5L, Gloss on: 28/03/18
Quality Product by GREG LLOYD

As you would expect from Ronseal. I applied three coats to an oak floor and I'd be happy to invite the cast of Strictly to use it. Very hard wearing.

Reviewed 2.5L, Matt on: 27/03/18
Easy to apply by Michael In Sussex

I bought this to add as an extra layer of protection for a new oak floor just put down. Found it easy to apply and clean brushes afterwards with water - so can touch up any damage from dogs etc. with ease and keep the floor protected.

Reviewed 5L, Matt on: 12/03/18
Excellent finish Easy to apply by Graham Singleton

Easy to use. Great finish. Used this before and it lasts well.

Reviewed 5L, Satin on: 28/02/18
Perfect by Suzy Thomas

This varnish is exactly what I wanted: quick drying and easy to administer leaving a lovely matt finish. It's pricey, but you get what you pay for (I've used it on floors before and it has been very hard wearing - no scuffing even in high traffic areas!

Reviewed 5L, Matt on: 28/02/18
Gave a perfect finish by Laura Hall

Much cheaper than the usual DIY stores, excellent

Reviewed 5L, Satin on: 22/02/18
Good coverage and finish by Karen Durham-Diggins

Good coverage and finish, fair price. Excellent service as ever from Wood finishes

Reviewed 2.5L, Satin on: 22/02/18
Easily applied and gives a smooth finish by Alex Paterson

Firdt time I have used this product and am very happy with it.

Reviewed 2.5L, Gloss on: 20/02/18
Good quality product by Martyn Ferguson

Coverage was as per guide. Finish was excellent

Reviewed 5L, Matt on: 13/02/18
Excellent product by Mick Blamires

Easy to apply, dries quickly and gives a really smart and hard wearing finish. Just what we needed.

Reviewed 5L, Satin on: 11/02/18
Does what it says on the tin by Bob Gowers

As long as you do the prep and take your time this works well, don’t rush drying time and make sure the surfaces are clean and you can’t go wrong. Sq Mtr Coverage is about spot on and easy clean up so yes I would use it again, hopefully not soon !

Reviewed 5L, Satin on: 08/02/18
Does exactly what it says on the tin, brilliant product by Cathy McQuaid

Does exactly what it says on the tin, brilliant product.

Reviewed 5L, Gloss on: 02/02/18
Very easy to apply, quick build finish, wash brushes under the tap by Stephen Allen

I bought this for solid Oak flooring, the milky hue diminishes as it dries out, it's rapid drying allowed three coats in one day, once dry the the finish is hard ready for traffic, an excellent product.

Reviewed 2.5L, Satin on: 01/02/18
Does exactly plus more off what it says on the tin by Elaine Burling

Super shiney, high quality, tough heavy duty varnish, high recommended, my 24 year old parquet flooring looks like new.

Reviewed 2.5L, Gloss on: 27/01/18