Bona Mega Varnish 5L

  4.9/5.0   169 reviews

buy 2 or more for £66.94 each

buy 3 or more for £64.94 each

buy 6 or more for £63.94 each

buy 12 or more for £61.94 each

You'll need enter area above for 2 coats (Good protection)
You'll need enter area above for 3 coats (Excellent protection)

Wood type and application can vary coverage

  • Bona Mega Varnish is a clear, water-based, ready-to-use, 100% polyurethane varnish
  • Suitable for heavy traffic areas within domestic and commercial environments
  • Safe, quick and easy to use
  • Highly resistant to wear, scuff marks and scratches
  • Very good chemical resistance
  • Crosslinking properties give it the performance of a two-component finish without requiring any mixing
  • Excellent flow and levelling give an exceptional surface finish
  • Based on vegetable oil, a renewable resource, making it a sustainable choice for the future
  • Very low odour with a solvent content of just 5%
Brand Bona
No. of coats 2-3
Coverage Up to 10 per litre
Drying time hrs
Size 5L
MPN WT133620001, WT133920001, WT133320002, WT133020002
GTIN 7312790016424, 7312790024436, 7312791928429, 7312793125420

Bona Mega varnish is a water-based PU varnish that forms part of Bona's Wood Floor Varnish range.

  • Surfaces should be sanded back to bare wood and be free of all sanding dust, grit, dirt, oil, wax and any other contaminates. The final sanding should be done with a fine sanding disk, screen or good quality sandpaper with a sanding grit of 120 or finer.
  • Previously waxed, polished or oiled floors cannot be overcoated with Bona Mega unless sanded back to bare wood. Bona will not guarantee adhesion when over-coating non-bona varnishes
  • Apply Bona Mega to a small test area to confirm performance and compatibility.
  • For application to bare floors, a coat of Bona Prime Classic reduces recommended number of coats to 2, otherwise 3 thin coats of Bona Mega is advised.

Always do a test area before starting any project to check suitability and compatibility. Shake well before use. Ensure room temperature does not fall below 13℃ during application and drying. Thoroughly read the manufacturers guidance and instructions on the container.

  1. Apply thinly with a roller.
  2. Start at the edges and then roll with a smooth flowing action alternately across and with the grain of the wood.
  3. Avoid accumulations of finish and overlap wet-in-wet without interruption.
  4. Allow to dry before applying another layer of finish. Anticipate slightly longer drying time for each layer that is applied.
  5. If necessary make an intermediate sanding using a screen or the Bona Scrad System grit P150 or finer before applying the final layer of finish.

Please Note: If the previous layer of finish has been allowed more than 24 hours drying time then an intermediate sanding is always required. The floor will take light foot traffic approximately 8 hours after the final application. Allow the surface to dry for at least 1 week before covering with carpets or other floor coverings, or loading with heavy objects. Also avoid damp mopping the floor until after this time.

Wooden floors treated with water-based varnishes should never be saturated with water as part of a cleaning routine as this will significantly reduce longevity of performance.

Regular Cleaning

For optimal performance, floors coated with Bona Mega will benefit from one of the appropriate Bona floor cleaners.


To restore the appearance of a dull floor use Bona Freshen Up. This will improve the appearance of the floor whilst still allowing further coats of Bona Mega to be applied at a later date without the need to sand the floor back to bare timber.

169 customer reviews
Great for wooden flooring, lousy for painted flooring by Ben Miller

Bona Mega is by far the hardest wearing of the single-part water based varnishes that I use. On bare wood it is excellent, fast drying and rests flat. Sadly, it yellows very quickly and it's a bit random when and where this will happen. I used it on a white painted floor and the slightest bit too much left a yellow mark. As the finish builds, with the 2-3 coats recommended, the effect can be pronounced. As a result, I don't think I would use it on a painted floor again. 3/5 stars as Bona should be more clear about the extent of the colour change.

Reviewed Silk Matt on: 03/07/17
Fantastic by Lisa Christopherson

This product is A1, so easy to apply, dries quickly, and the finish was fantastic. Really really excellent

Reviewed Gloss on: 28/05/17
Easy to apply with no toxic smells and wonderful matt finish by Russell Willis

Darkens the wood but dries to a beautiful gentle finish. We love it

Reviewed Extra Matt on: 19/05/17
Pretty good by Kevin Thompson

This is a water based polyurethane varnish. It is easy and quick to apply with a roller, and dries within a few hours-important on a floor, especially a hallway where I used it. I put on three coats. The only point I would make is that it sometimes had a milky appearance when wet, but this was not apparent once dried. Also, it needs sanding in between coats if you leave it more than 24 hours. It is only available in 5litre tins, which is more than I needed, and was quite expensive. So far, (three weeks) it has worn well. It onl

Reviewed Extra Matt on: 16/05/17
Easy to apply and a great finish by David Eales
Reviewed Silk Matt on: 10/05/17
Brilliant! Extra Matt by Grant Burton

Probably the best lacquer available. Leaves a great looking finish, and is quick drying which makes it all the more appealing.

Reviewed Extra Matt on: 30/04/17
Simply the best product on the market by Derek Avery

Have reviewed before and it's simply the best product in it's class and out performs solvent based varnishes. Quick, easy to apply and no lasting smell. Why would you want to use anything else?

Reviewed Extra Matt on: 20/04/17
Great stuff by Tomasz Drozdz

Exactly what they say . Quick delivery

Reviewed Gloss on: 23/03/17
Easy to apply even for a first timer by Sarah Bolger

I had never varnished a floor before so spent a lot of time researching how and products. I chose bona mega extra Matt varnish and have not been disappointed. Initially did one room and lov d it so much I have since done the whole house. The boards look natural and extra Matt is super Matt which is what I wanted.

Reviewed Extra Matt on: 22/03/17
Efficient and Excellent by Mrs L Guilford

Ordered in afternoon - received next day delivery - Staff polite and efficient, what more can I say - would recommend this company to anyone, any day!

Reviewed Silk Matt on: 22/03/17
Easy to use by Charlotte Hammond

As novice DIY'ers we found this product easy to use and three coats has left us with a lovely finish

Reviewed Extra Matt on: 21/03/17
Excellent, simple to use by Nick Bourne

Excellent for all wood finishing. I finish all my cabinetry and joinery with this. Excellent drying time, incredibly was to get a good streak free brushed finish on all timber surfaces. Love it.

Reviewed Matt on: 04/03/17
Varnish by Gareth Jenkins

Very quick delivery. Does the job well, with very little odour.

Reviewed Matt on: 27/02/17
Great adhesion, easy to apply, looks good by Mr Leader

I have used this product for over 10 years and in my opinion it is the best on the market. It does not distort the colour of the wood.

Reviewed Extra Matt on: 11/01/17
Excellent by Simon Mills

The best varnish in the world.

Reviewed Extra Matt on: 06/01/17
Fast fabulous and fantastic by Theo Gerber

Love it!

Reviewed Silk Matt on: 04/01/17
Brilliant varnish by Jacky

I used this on a solid light oak parquet floor and it looks stunning. After 3 coats (1 to prime the floor, then a light sanding and 2 further coats) it has the very slightest sheen and hasn't coloured the floor at all, which is just what we wanted. It has had a few spillages on it and liquid just sits on top of it. I couldn't be more happy with it, definitely worth paying that bit extra to protect your beautiful new floor properly! I'll be buying more of this to finish off the rest of the flooring when it is laid.

Reviewed Extra Matt on: 04/01/17
Superb! by Mr D Russell

I've been using Bona varnishes for 15 years, and the sheer quality and versatility that they allow,when combined with non-solvent tints/ dyes to produce a beautiful floor finish, is wonderful!

Reviewed Silk Matt on: 27/12/16
Great varnish by Wendy Plater

This is a great water based varnish - goes on a dream and very long lasting. I have been using this product for a number of years and would definitely recommend it.

Reviewed Extra Matt on: 21/12/16
Excellent product giving a professional finish by Mr. S. Harrison

Bona Mega varnish was easy to use, being a one part varnish, but gave as good a finish as 'professional' two part varnishes. I bought 10 litres for a room of 30m2 and it gave enough for 4 coats with enough left over to recoat another similar area twice. So the coverage was significantly better than advertised. I would never bother with cheaper DIY shop varnishes again.

Reviewed Matt on: 02/12/16
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