Osmo One Coat Only HS Plus

  4.7/5.0   24 reviews
You'll need enter area above for 1 coat (Recommended)

Wood type and application can vary coverage

  • A high quality, protective wood stain for use on exterior wood surfaces
  • Enhances the natural beauty, grain and texture of the wood
  • Offers exceptional protection with just one coat
  • Water repellent, extremely weather resistant and UV stable
  • Does not crack, peel, flake or blister
  • Easily maintained and repaired if required
  • High coverage - very economical
  • Offers semi transparent, satin-matt finish
  • Finish stays workable while coating
  • Allows wood to breathe and reduces swelling and shrinkage
  • Natural oil-based, microporous formula
  • Low solvent content
  • Biocide-free - no preservative agents
  • Safe for humans, animals and plants when dry
Brand Osmo
No. of coats 1
Coverage Up to 26 per litre
Drying time 12 hrs
Size 5ml Sample, 125ml, 750ml, 2.5L
MPN 9271S, 9242S, 9236S, 9232S, 9241S, 9221S, 9235S, 9264S, 9234S, 9212S, 9262S, 9261S, 9211S, 9242A, 9236A, 9232A, 9235A, 9264A, 9234A, 9212A, 9261A, 9211A, 9232C, 9234C, 9236D, 9234D, 9212D
GTIN 4006850751617, 4006850751679, 4006850751556, 4006850751518, 4006850751563, 4006850751495, 4006850751549, 4006850751600, 4006850751532, 4006850751488, 4006850751594, 4006850751587, 4006850751471, 4006850310258, 4006850311576, 4006850311675, 4006850309986, 4006850310197, 4006850312023, 4006850312719, 4006850312498, 4006850310043, 4006850311699, 4006850312214, 4006850308019, 4006850312238, 4006850312740

Osmo One Coat Only HS Plus is ideal for use on all types of exterior woodwork such as horizontal and vertical sidings, windows, claddings, window shutters, carports, smooth wood fences, pergolas, exterior plywood, shingles, beehives, dovecotes, summerhouses, greenhouses, flower boxes and more.

Ensure that the wood surface to be treated is clean, dry (maximum moisture content 20%) and free from any surface coatings such as paint or varnish.

  • Old paints and varnishes must be fully removed with a suitable paint and varnish remover prior to application of Osmo One Coat Only
  • Old microporous stains need only be cleaned or lightly sanded
  • For additional protection against blue stain and wood rot on exterior timber, treat with Osmo WR Base Coat 4005 and allow 12 hours drying time before over-coating with Osmo One Coat Only HS Plus

Always do a test area before starting any project to check suitability and compatibility. Follow the manufacturer's instructions on the tin at all times.

Osmo One Coat Only HS Plus should be brush applied only. (Not suitable for spray application.) Stir well before and during use for a consistent finish.

  1. Only dip the brush a little into the tin and apply very thinly along the wood grain
  2. Apply Osmo One Coat Only thoroughly and evenly
  3. Allow to dry for approx. 12 hours with good ventilation
  4. Remove any excess product immediately with a lint-free cloth

Please Note: If applied too thickly, this product may leave shiny areas. However, these shiny areas will weather naturally within a short period of time leaving an even, satin-matt appearance.

For windows or other surfaces exposed to weathering, apply a coat of Osmo UV Protection Oil Extra over One Coat HS Plus when fully dry. This will give the surface a slightly satin appearance and improved durability of the finish. If possible apply to all sides of the wood.


Light marks and dirt can be removed by cleaning the affected surface with a mixture of water and Osmo Wash And Care.

Q. Can Osmo One Coat Only HS Plus be used on interior wooden surfaces?

A. Although this product is labelled as an exterior use product, Osmo do say that it can be used on interior wooden surfaces such as wooden ceilings and panelling. This product however is not suitable for use on wooden flooring or other surfaces that are subject to wear and tear.

24 customer reviews
Excellent coverage and consistent colour by Tim Bay

I've used OSMO interior products for many years and they always give excellent results. This is my first use of an OSMO exterior product and it's equally as good. I used a lint-free cloth to apply this rather than a brush and the finish is very even and extremely natural... the finished item looks like teak, not coloured wood! Can't comment on longevity but based on my previous OSMO usage this wont be a problem. 100% recommended.

Reviewed 5ml Sample, Teak - 9262 on: 20/08/17

Good easy to use, can't see the grain of the wood much through the stain, but that was fine by me. Watch out for what to clean your brush in after use.

Reviewed 750ml, Mahogany - 9232 on: 17/08/17
A little goes a long way by Valerie Skipper

Bought a sample to test on my old worn ikea hardwood outdoor table and chairs. So good I ordered a tin. This goes a long way so only needed the 125ml tin for table and 4 foldable chairs. So easy to use, goes on smoothly and the colour was rich. I painted it on with a flat artist brush. Looks better than new

Reviewed 5ml Sample, Mahogany - 9232 on: 06/08/17
Little goes a long way by Adam C

This looked pretty nice, dried fairly quickly, and was easy to apply with a sponge.

Reviewed 125ml, White - 9211 on: 25/07/17
Brilliant by Andy

Excellent....would thoroughly recommend it as a preservative

Reviewed 2.5L, Larch - 9236 on: 11/07/17
Very good once we got it by Mrs Pamela Beha

Product good but delivery far too long

Reviewed 5ml Sample, Silver Poplar - 9212 on: 03/06/17
Good product and good service by Barney Webb

Have used Osmo products before. Never fail to impress. Bit pricey for the amount but did the job. looks great and is performing well in the rain.

Reviewed 125ml, Silver Poplar - 9212 on: 01/06/17
Only a sample, but was good enough that I just ordered a full tin by Andy Murphy

Sample coated well and left a decent colour. Have opted for the "oak" colour for my needs and ordered a full tin. Have also ordered some "Clear Extra" to use on top - have had great results with that product elsewhere. Am avoiding the base coat at the moment. I suspect it would be wise to use it, but the safety notes on it do not make good reading!

Reviewed 5ml Sample, Oak - 9241 on: 09/04/17
As per the Oak sample, did what it needed to do by Andy Murphy
Reviewed 5ml Sample, Teak - 9262 on: 09/04/17
Goes on fairly easy but you have to work it in to avoid it looking like thick paint by James Donovan
Reviewed 2.5L, Larch - 9236 on: 19/10/16
This is slightly pearlised clear finish by Lin W

Went on easily, time will tell how it wears but if as good as other Osmo products it will be marvellous

Reviewed 5ml Sample, White - 9211 on: 31/08/16
Did exactly what the blurb said it would by Lin W

Used it to give a greyed down look to teak outdoor furniture followed by 2 coats of Osmo clear uv protection oil

Reviewed 5ml Sample, Silver Poplar - 9212 on: 31/08/16
Great product by David Barwell

A great product leaving a professional finish. My only comment is to test an inconspicuous area before applying a 2nd coat. The 2nd coat to my garage door is much darker than I anticipated (red cedar) and as left a glossy finish in areas, although I understand this will turn to a matt finish after a week or two.

Reviewed 5ml Sample, Fir Green - 9242 on: 18/08/16
Gives a great finish by Robert Bristow

Easy to apply, quick drying and long lasting. Worth the extra cost.

Reviewed 2.5L, Silver Poplar - 9212 on: 30/05/16
10/10 by Janet Weston

Lightning delivery, well packaged and great product. What more could l need? Very pleased.

Reviewed 2.5L, Silver Poplar - 9212 on: 22/10/15
Good quality product by Sandra

Quality German product, very good coverage and looking smart.

Reviewed 2.5L, Silver Poplar - 9212 on: 07/10/15
Not what it purpoted to be ie a replica to TIMBA DURA by 156brian Midgley

It is nothing like TIMBA DURA and I am sorry I was foolish enough to buy it!

Reviewed 125ml, Red Cedar - 9235 on: 29/08/15
A note from us...

Mr Midgley,

Thank you for your reveiw and thank you for taking the time to talk to me this morning. I am sorry that Blackfriars told you that this product is a replacement for Timba Dura. The products are completely different and can not be used together. As you said the Timba Dura is no longer available so you will need to try and find a suitable replacement. Please give the product a try on some bare wood. I'm convinced you will be pleasantly surprised. Should you need any advice or assistance with products in the future please give us a call.
Kind regards,
Wood Finishes Direct.

Simple to use, high quality by Steve Burchell

Prompt delivery, as described

Reviewed 5ml Sample, Larch - 9236 on: 26/08/15
Great Product by Anne Palmer

bought this item to use on some new wooden troughs in the garden it has really brought out the grain in the wood and has really enhanced the troughs great product went a long way too!

Reviewed 125ml, Larch - 9236 on: 10/04/15
Ruddy broody red by Anna

I mixed up different colours and got great effects. Easy to apply, beyond my expectations. Grain comes through beautifully, I'd love to try the metallic in this. :)

Reviewed 750ml, Scandinavian Red - 9234 on: 03/06/14