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Ronseal Diamond Hard Floor Varnish

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Ronseal Diamond Hard floor varnish dries to a clear, non-yellowing finish, whilst enhancing and prolonging the natural beauty of your wooden flooring.

This polyurethane varnish is Ronseal's strongest formulation, offering good protection against knocks and damages whilst resisting household chemicals.

Ronseal Varnish is touch dry within 30 minutes, with a re-coat time of 2 hours. For a tinted translucent finish try Diamond Hard Coloured Floor Varnish or Ronseal Diamond Hard Floor Paint for an opaque coloured floor finish.

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  • Overview


Ronseal Diamond Hard Floor Varnish is available in a satin and gloss finish which allows the natural colour and beauty of the wood to show through - Perfect for wooden flooring and more. If you wish to varnish your floor and add colour, use available in satin only.

Ronseal Floor Varnish is suitable for use over most hard and soft woods, as well as hardboard, chipboard and wood composite.

Ideal for use on most domestic wooden floors including bathrooms and kitchens and is perfect for areas of high foot traffic such as hallways.

Note: Not to be used over laminate floors. Not suitable for commercial environments such as pubs, restaurants, community halls etc. For commercial premises or areas of very high traffic, consider Manns Two Pack Varnish or Bona Traffic HD.

Our customers love Ronseal's Diamond Hard Floor Varnish. And they appreciate being able to find out how to use wood floor varnishes via our blog post which includes a link to Ronseal's excellent video about varnishing a wood floor.


Prep - Unvarnished Floors: We know preparing a floor for re-coating can be a pain, but it's worth it to get wooden floors looking their best.

Start by sanding the floor. This will give the wood an even finish and help the Ronseal Diamond Hard Varnish to stick. The easiest way to do this is with a floor sander. Dustless floor sanders are readily available which help to prevent weeks of cleaning and can help to provide a better overall varnish finish. Use 120 grit sandpaper and go along the length of the boards. Make sure to wear a good dust mask, especially if not using a dustless sander.

Vacuum sanded areas thoroughly and wipe down with white spirit. If you notice any holes or imperfections use a suitable wood filler to fill them in.

Prep - Varnished floors: This depends what state your floor is in. If the old varnish is just in need of a refresh, give it a light sand with 120 grit sandpaper. Let the dust settle. Then give it a vacuum and wipe it down with white spirit.

If the floor is in poor condition where the existing varnish is flaking off or there are areas that have worn though to the timber, sand the floor back to bare wood using a floor sander. Look at the Prep for Unvarnished Floors section above to see how to do this.

Application of Diamond Hard Floor Varnish

Always do a test area first.

Ensure that the room temperature is above 10℃. Remove all furniture and allow for good ventilation.

Stir the Ronseal Floor Varnish thoroughly before and during application to ensure a consistent finish. 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.

Apply 3 coats to give the best protection leaving 2 hours between each coat. 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). Wipe down with a damp cloth. Then put the 3rd coat down.

Equipment Cleaning

Scrape off as much varnish as you can from application equipment, then wash in warm, soapy water. Don't put any left over polyurethane varnish down the drain or into watercourses. Local authority waste disposal sites usually have facilities to dispose of unused varnish.

Drying Time

Ronseal Varnish is touch dry after 30 mins. Allow 2 hours between coats.

The freshly varnished floor will be ready for light foot traffic in 2 to 3 hours of the final coat. Wait 24 hours before moving furniture back in to the room taking care not to drag it across or scrape the floor. Full curing time for Ronseal Diamond Hard Varnish is 72 hours.

  • Reviews

Ronseal Diamond Hard Floor Varnish reviews - Rating: 4.8 out of 5 stars, based on 53 reviews.

Filter:   All reviews (53)   5 stars (48)   4 stars (3)   3 stars (1)   1 star (1)  

Maria Johnstone
Brilliant finish
This varnish was great, we done 3 rooms with it, it was easy to apply and looks fantastic now it's finished. We have small children too and so far it's standing the test of toys smashing against it. On the down side sanding the floors was a nightmare, anyone considering taking on this headache should look at local companies who will do it for you and probably book a holiday till they have finished. They look amazing but I won't be doing it again, ever.
George Simpson
Excellent product
Easy to work with and super finish
Annabelle Ladd
Wonderful, great product
Lovely product, great delivery times and super helpful staff. Cheaper then anywhere I looked.
Dianne Mitchell
Does what it sdays on the tin
Excellent product easy to apply (with the right brushes)and looks really good, happy it is protecting our wood floor.
Lorraine Harvey
Good protection
Really solid protection. Will cope with dining room chairs repeatedly being pulled over it but for seriously stupid scrapes you are unable to go back and remove a little to re-sand. Brought in industrial sander to match up various origional floorboards and it was a nightmare to remove! Does what it says on the tin but seriously respect the floor afterwards!! Or else! It also looks like too plastic a finish for my liking but have used it twice because I needed to make a quick decision.
Robert Morrison
Great Product
Easy to use,dries fast and protects well, everything you want from a varnish!
Kevin Jenvey
Very easy to use.
Excellent service and did exactly what it said on the tin. Great price.
David Fitzpatrick
It must be about the best
It does what it say's on the tin. It is pricy but very good. Ronseal tecnical are very good and easy to contact 10/10
Brian Mudie
A super hard finish just like a diamond.
I used this product for the first time about 5 years ago and it has really stood the test of time on my study floor. Just re-applied another 4 coats and expect it to last for another five years.
Dennis Hills
I would certainly use it again.
It is easy to apply, dries quickly, and cleans up with water. The results are a hard enduring finish that looks great.
Ian Hammond
Easy to get a brilliant finish
This was used to improve the worn varnish in a kitchen with a wood block floor. This was a large kitchen so It was done in two halves so it could continue to be used. The quick drying meant that the whole job could be done in 2 days with 3 coats applied after a sanding. The end product looks really good with an impressive shine.
H Gardner
Just what I needed to finish the job, many people commented how good the finished floor looks
Nick Robinson
Great service, speedy delivery, excellent product
Ordered Ronseal Diamond Hard Floor Varnish from wood finishes as it was 20% cheaper than anywhere else and it arrived next day! Have used it on all my original Victorian pine floors for a superb, hard wearing finish (went for 5 coats to be safe!)
Stephen Wilmott
Easy to use and easy clean brushes.
Four coats on small bathroom floor and so far it is doing what it promises
Long lasting quality product, well packaged and very good courier service.
I have used Ronseal Diamond Hard 6 years previously in the living room, the floor's been subject to lots of use with kids and pets, but little sign of wear. Very happy to get the chance to use again, pleasure to apply, goes on easily and is touch dry in minutes.
Charlotte Bearn
A good product - worked well
Good product, easy to use, dries quickly
A N Syrop
As expected
Worked really well on a hardboard floor - easily achieved the coverage and dried as expected. 3 costs seem to give a solid protection from dirt and wear. Easy brush clean and next to no smell
M Chahal
Went on easily and looks good
This varnish goes on easily and went a long way. Covered stripped wooden floorboards smoothly. Would buy again.
John Cosgrove
Does exactly what it says on the tin , pleasure to use
Pleasure to use , touch dry after a couple of hours , left no brush marks and dried very hard with no discolouration , have no fears walking on it
Roger Davis
Fantastic varnish for wood floors.
Great product and excellent service from Wood finishes direct.

per litre
30 mins
dry time

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* Coverage can vary depending upon on the type of wood used and the amount of product applied. Litreage amounts shown above are total, not 'per coat' amounts.
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