Wood cleaner, neutraliser and colour restorer

from 41 reviews
  • Lightens and restores colour to all greyed, weathered wood without bleaching
  • Non-aggressive - harmless to plants, shrubs and surface being cleaned
  • Can clean and rejuvenate, plastic, gel coat, stone and cement
  • Fast-acting - restores wood to its natural colour in just 15 minutes
  • Can be used as a neutraliser after using Dilunett, Aquanett or another stripper

Net-Trol is a powerful wood cleaner and brightener which restores greyed and weathered wood to its natural colour without damaging the wood’s fibres. It effortlessly removes both surface and ground in dirt leaving the wood looking bright and vibrant. Net-Trol is fast acting and can restore the original colour of your wood surface in as little as 15 minutes with no laborious and backbreaking sanding!

Benefits of using Net-Trol

It is safe to use on all exterior wood types and is also an excellent degreaser for use on tropical hardwoods to allow finishes like Deks Olje D1 to penetrate. Net-Trol can remove stains caused by tannin bleed and will remove all traces of weathering caused by mildew, pollution and UV rays. It will also neutralise wood surfaces which have been stripped with a stripping product such as Owatrol’s Dilunett or Prepdeck, leaving the surface ready for applying your chosen finish.

Net-Trol is not only for use on wood surfaces though – you can also use it to restore the lustre to faded plastics dulled by weathering and UV rays. It can also be used to remove rust stains and to clean discoloured stone and cement. Net-Trol is biodegradable and does not contain solvents or bleach. It’s not harmful to plants and shrubs so it’s safe to use in the garden!

Ideal Uses for Net-Trol Wood Cleaner

  • Reviving neglected fence panels
  • Cleaning greyed wooden garden furniture
  • Restoring the colour of decking and cladding
  • Brightening faded plastic guttering
  • Removing rust stains from cement and brickwork
  • Cleaning discoloured paving slabs and driveways
  • Removing stains caused by tannin bleed

NOTE: Wear chemical resistant gloves, safety goggles and protective clothing

Always read the Net-Trol Product Information before using and follow the instructions carefully.

Application of Net-Trol Wood Cleaner & Colour Restorer

Application tools

  • Soft brush
  • Stiff bristle/nylon brush
  • Pressure washer
  • Wear chemical resistant gloves, safety goggles and protective clothing

Caution: Surfaces may be slippery when wet. Use caution when walking on wet surfaces during application. Net-Trol may dull painted surfaces and some metal fixings if left on to long. Rinse off quickly or wipe with a wet cloth.


To use Net-Trol on wood:

  • First wet the surface with fresh, clean water
  • Apply Net-Trol with a synthetic brush or roller (medium or long pile)
  • Scrub the surface with a stiff nylon/synthetic brush
  • Leave to stand for approx 10-20 minutes. If the surface starts to dry, dampen with a mist application of water
  • Scrub the surface whilst rinsing with water or use a pressure washer (max. 60 bar)
  • If required repeat procedure
  • Allow to dry for 48 hours or until it meets the moisture content required by the chosen finish before finishing

To use Net-Trol on stone or concrete:

  • First wet the surface with fresh, clean water
  • Apply Net-Trol with a synthetic brush or roller (medium or long pile)
  • Scrub the surface with a stiff nylon/synthetic brush
  • Leave to stand for approx 10-20 minutes. If the surface starts to dry, dampen with a mist application of water
  • Scrub the surface whilst rinsing with water or use a pressure washer (max. 60 bar)
  • If required repeat procedure
  • Allow to dry until it meets the moisture content required by your chosen finish or sealer

To use Net-Trol on nail stains:

  • First clean the surface
  • After cleaning wet the surface with fresh clean water
  • Apply Net-Trol to the entire surface over and around the nail stain
  • Do not rinse until the stain has disappeared

To use Net-Trol on plastic or GRP:

  • First wet the surface with fresh clean water
  • Apply Net-Trol using a brush
  • Leave it to work for 10 minutes
  • Scrub the surface with a soft or medium nylon scrubbing brush
  • Rinse with large amounts of fresh clean water

To use Net-Trol on rust stains:

  • First wet the surface with fresh clean water.
  • Apply Net-Trol with a stiff nylon scrubbing brush working it into the rust stain
  • Leave to work for 10 minutes
  • Scrub surface with stiff nylon scrubbing brush
  • Rinse with large amounts of fresh clean water

Clean Up

Clean all tools used with soap and water.

After Clean Up

We recommend protecting and enhancing the natural beauty of your wood with Owatrol penetrating wood finishes.

Things to Remember

  • Shake container thoroughly before use.
  • Cover any areas you want to protect.
  • Thoroughly wet surrounding plants and shrubs.
  • Apply between 5˚C and 35˚C.
  • Do not apply on a hot surface as the product will dry too quickly.
  • If cleaning vertical wood, work from bottom to top to avoid streaking

41 reviews for Net-Trol

Write a Review
  1. Avatar

    Richard Chatham Verified Owner

    I was tackling a pair of garage doors where the varnish had split and risen in places. The doors looked a mess. I started with a trial pot of dilunett and followed up with the Net Trol. I was unsure of the Dilunett and purchased a cheaper alternative. I was wrong, the problem was that the dilunett dried out in the sun very quickly on the day I tried it. However. I would use Dilunett next time. I then purchased a litre of Net trol. This stuff is frightening. I now have half the village wanting me to rejuvenate their Garage doors. I also used a drop on a very black oak door. it is now just like it was when it was delivered 20 years ago. I would recommend Net Trol .. I will be ordering more.

  2. Avatar

    Chris Sharp Verified Owner

    Used it on a softwood garage which is 4 years old. I have just had this garage extended, to match, but the difference between new and old was extreme due to the original half having greyed and weathered in its 4 years. So I used this product as described and am very pleased with the results. The 2 halves are now as close to matching as if they had been built at the same time. I wish I could attach a photo. Highly recommended.

    • Owatrol Team

      Owatrol Team

      Hi Chris,

      Thank you so much for your kind words regarding the use of Net-Trol – we are so glad you had such a positive experience using it.
      If you are happy to send us photos, we can create a blog post for the website and share them on our social media pages.
      If this is something you are happy to do, please send them to; and we will feature them.

      Thanks again, Chris.

      All the best,
      The Owatrol Team

  3. Avatar

    Gary Souter Verified Owner

    I used Net-Trol on my very grey, dirty and UV stained Iriko wood windows and doors. Painted on and, after 5 minutes, pressure washed off to reveal the original wood – it was like magic! No more hours of scraping and scouring. Sealed with Aquanet and finished with wood oil – perfect! Have been recommending to everyone who will listen.

  4. Avatar

    Richard Fulcher Verified Owner

    Had Iroko gates fitted 3 years ago and told to use Tung oil on them to maintain them – This left them black and looking awful.
    Just finished using Aquanett, Net-Trol and D1 pro, on them and they now look as new. Really good products that really work. Could not recommend them enough.

  5. Avatar

    Bob Garland Verified Owner

    Better than other products we tried on near-white stone to remove rusting from fertiliser, though not wholly 100% effective. There’s a risk of using it at over-concentration strength, with mild scarring of the stone.
    Overall though, an effective product that I shall use again in the future.

  6. Avatar

    Diane Verified Owner

    Excellent product thank you

  7. Avatar

    Gary Brown Verified Owner

    Use this every year on my IPE deck, absolutely brilliant

  8. Avatar

    Chris parker Verified Owner

    Tried the sample on some wood cladding. Struggling to see much difference. I will try again but bearing in mind the cost of the product i would expect seriously better results

    • Owatrol Team

      Owatrol Team

      Hi Chris,
      We are sorry that you have not had a positive experience with Net-Trol. Can you please give us more information about what you were trying to remove and what method you used to do it so that we can understand the problem a little better?
      Many thanks,
      The Owatrol Team

  9. Avatar

    Martin hiscock Verified Owner

    Excellent !!!!! Really good it does what it says on the tin

  10. Avatar


    Removed rust stains from sandstone patio. Our builder removed and old cast iron downpipe with an angle grinder sending tiny rust particles everywhere, including all over our newly laid patio. He was going to use an acid based patio cleaner to try to clean it but fortunately I’d read enough online to know that this would probably make matters worse and that net-trol was rated very highly for this problem. I treated the patio and it’s cleared nearly all the rust after one application and before the builder got a chance to do it his way!

  11. Avatar

    KN Verified Owner

    Excellent product. Easy to use with a great result, from what we can see so far. Covered about 30% more surface area than estimated. Pricey but worth it. Excellent delivery service with good updates.

  12. Avatar

    Lee Shaw

    In fairness to my last review, I may have been too harsh as when fully dry it turned out better than I first thought especially as it was 2 years weathering and left untreated.
    Its just that at £20 for the product and having worked hard scrubbing and power-washing it twice there does remain some grey patches throughout the deck as well as some green areas which im hoping a fungicidal wash and a good rub with methylated spirits will remedy.
    Hope this helps others with a longer weathered deck as ideally you will probably need more product, as 1 litre of Net-trol wasnt sufficient for my 8m2 deck after two applications, scrubbings and power-washings.
    So to use this system, for an 8m2 deck I would realistically allow for 2 litres of Net-trol, fungiciidal wash, methylated spirits and 2.5 litres of Owatrol stain. All in you are talking around £150 or more if using Seasonite as recommended.

    [Previous review]

    As a professional Painter & Decorator I was recommended this to clean a 2 year old weathered decking by a guy at Crown trade centre. Very disappointing!

    At £20 for a cleaning product I was expecting much better results.

    Applied the first coat diluted as instructed. Scrubbed it well into the deck and left 20 mins before power-washing. Not impressed, I applied a second coat neat, scrubbed, left and power-washed a second time.
    Although it did seem to brighten it up and remove most of the grey, it was useless removing any green slime or any of the darker areas and now it just looks patchy which now rules out being able to use stain on it as requested by the customer. It will have to be painted with an opaque finish instead.
    Though I will not be using an Owatrol product at £85 after this episode.
    Think I will stick to the old fashioned methods of Sugar Soap and Meths in future.

    • Owatrol Team

      Owatrol Team

      Hi Lee,

      Unfortunately the problem here seems to be that you have not used nearly enough Net-Trol for the amount of wood you needed to cover. The application rate is 5m2 per litre and for a deck that is particularly weathered, then this will probably be slightly less. You would have needed at least 2 litres and possibly 2.5 litres to get the desired effect when using Net-Trol and this is why you have not achieved the desired result. We would recommend always checking the coverage calculator before purchasing and always buying slightly more than you will need as coverage can be altered by the age, condition and porosity of the wood.

      Many thanks,
      The Owatrol Team

  13. Avatar

    Rob R

    I dont often write reviews, but when something impresses me as much as this does, I feel I need to spread the word.
    My softwood deck is over 2 years old, but its been left to weather without treatment. A couple of wet winters has left it grey, pretty dirty and with a fair amount of green algae on it.
    Bought a bottle of Net-trol on a recommendation, and decided to give it a go neat. Pasted it on to the wood, gave it a real good scrub and then left it for 20 mins. A real good second scrub and then plenty of water onto it. As I washed it off, I could still see some green on it and didnt have much hope for it doing the job however, once it had dried it was remarkably clean and clear. Its lighter than it was originally, but no marks and looked great. I’ve now oiled it with another product and its like a new deck. Absolutely brilliant results all down to the Net-Trol cleaning it up so well. Its not cheap but its definitely worth it. 5 stars

  14. Avatar

    Reiner S Verified Owner

    Very pleased with this product. I used it to clean my decking which I installed two years ago. It now looks like new again.

  15. Avatar

    Emma Johnson Verified Owner

    I bought a sample size and I’m glad I did as it didn’t remove any of the marks or weathering from my summer house ,I had high hopes for this and yes I followed the instructions ,so back to the drawing board for me and my weathered summer house.

    • Owatrol Team

      Owatrol Team

      Hi Emma,
      We are sorry that you have not had a positive experience with Net-Trol. Can you give us a bit more information about what you were trying to remove and what method you used so that we can understand the problem a little better?
      Many thanks,
      The Owatrol Team

  16. Avatar

    Danny Brown – Danby Painting Contractors Ltd

    I was Recommended this product by a architect.
    We had 8 huge glulam beams to treat, arched over a soon to be swimming pool.
    The wood got weathered during construction.
    This product got the wood to look like new, removed all stains beautifully.

  17. Avatar

    Jeffrey Box Verified Owner

    Excellent product. Does what it says, ie removes rust spots from granite slates. Easy to apply and instant results.

  18. Avatar

    Scott Richardson Verified Owner

    Did a great job of restoring my hardwood ipa deck. Took two applications in some areas to get the wood looking new. There were a couple of stained areas on the edges, which were previously under planters, didn’t fully remove these stains, but I suspect it may have needed a good bleach solution to really get the stains out. Still for weathered wood, which hasn’t been treated for four years it did a good job.

  19. Avatar

    Kathy Verified Owner

    Amazing, my 2 beautiful oak porches are back to how they looked when first built, what a magic product

  20. Avatar

    Gordon Verified Owner

    Worked like magic cleaned the rust from my Lock Block with one application. Excellent Product.

  21. Avatar

    John Blackmore Verified Owner

    We had a very unsightly rust mark from an overflow pipe on the outside of our house,about 4″ wide and 15 feet long.I applied the product as per instructions
    to the affected area and had the whole area almost spotless with little effort. Very pleased

  22. Avatar

    Alison Verified Owner

    This stuff is absolute magic! My decking had been neglected for some years. It was discoloured and covered in algae which made it as slippery as an ice rink when wet. As is on a roof terrace and we have no outside tap, I worried how I would manage without a pressure hose, but we rigged up a normal garden hose from the shower on the floor below and that was sufficient.

    I had serious doubts as to how well it would work but the transformation was complete. Every bit of muck was gone and it looked great. It was hard work though, especially as we had lots of plants to move about. We did it sections, applying the solution to a new area and then going back to earlier sections for a second application. It took a fair bit of scrubbing, but I imagine it would be a lot quicker and easier if you had a pressure hose. It was easy to apply with a paint roller and we used a broom to scrub it clean with water. It was important for me that it had no bleach or chemicals that would be damaging to plants

    Yes it is expensive but, as others have said, it does the job beautifully and I would have no hesitation in recommending it. Having checked that I would need 7 litres, in fact I only used 5.

  23. Avatar

    Brett bassett

    The Netrol wood cleaner produced fantastic results on my very soiled deck. I had used my normal cleaner and it did not touch it. The Netrol stuff really did a good job. I followed up using Aqua deck. This also produced a very good finish but it is very expensive when compared to other options on the market. My wood was so dry it ended up drinking all 5 litres very quickly to the point I had to start putting it on quite thinly and quickly otherwise I would have had to use another tin. The Aquadeck stuff did provide a better finish than other types I’ve used in the past and goes on very evenly without leaving thick patches where it pools and dries like some other have done in the past. All in all I would recommend both products and will be using them again.

  24. Avatar

    David Kay Verified Owner

    Cleaned a 7 year old previously untreated soft wood decking 4metres by 3metres following the instructions exactly as stipulated. The wood was dirty and very, very dull. The results were outstanding. The wood looked like new. It did take a bit of “elbow grease” but the results were well worth the effort. I can highly recommend, but you MUST follow the instructions to the letter.

  25. Avatar

    Penny Verified Owner

    I bought Net-trol to clean a pair of weathered red cedar muskoka chairs … Whilst it did a reasonable job I have been a little disappointed as some areas look like they could do with another going over, obviously being an awkward shape doesn’t help … Being a somewhat delicate wood I didn’t want to scrub too hard for fear of damage so may well have been my fault … The test pice looks wonderful so I’m hopeful that when I get to to finish with the Textrol they will be beautiful again, unfortunately the weather has turned cold so have to wait …. Would I buy again? Definitely …. Was it easy to apply? Yes & clean up a dream

  26. Avatar

    Steve Buckley Verified Owner

    Thanks for your reply I left first application 15 minutes and scrubbed with nylon brush, second coat left half hour whilst maintaining damp surface and scrubbing again.

    I don’t expect it can work on everything, I just feel the reviews regards stone were a bit exaggerated but people can only speak as they find. Increased my star rating because you at least followed up my review.

    • Owatrol Team

      Owatrol Team

      Hi Steve,
      It looks like you applied as we would recommend so apologies that you haven’t had the desired results on this occasion. Thank you for the feedback.
      The Owatrol Team

  27. Avatar

    Steve Buckley Verified Owner

    Delivered extremely quick but performance very disappointing, not lived up to reviews at all.
    Used on Indian sandstone according to instructions on rust stains with no effect whatsoever.

    Not cheap at £ 27 ( Inc vat ! )

    Only hope it may be useful in future on other type of stains.

    • Owatrol Team

      Owatrol Team

      Hi Steve,

      We’re sorry that you are unhappy with your experience with Net-Trol. It’s primarily designed for cleaning and restoring weathered wood but we have had many customers achieving great results removing rust stains from stone. Unfortunately with deep, difficult stains it may not be effective or may need a repeat application and we do recommend trying a sample first. Can you tell us did you scrub the Net-Trol into the surface of the sandstone before rinsing it away and how long did you leave it to work?

      Many thanks,
      The Owatrol Team

  28. Avatar

    Graham North Verified Owner

    Great product. Completely removed a dark rust stain from Marshall paving slabs. After one application.

    Excellent product

  29. Avatar

    Mike Williamson Verified Owner

    Having tried everything to remove rust stains from new paving, I was despairing. Read a comment on Net-troll and decided to give it a try. Miraculous!
    Having used an acid-based mortar remover to get rid of the cement stains after laying and pointing, these rust stains appeared after a few weeks. I looked up the problem and discovered that, on some imported sandstones, the acid can oxidise the iron content in the stone. It happened with my job. I thought I was going to have to replace all the paving. I recommend Net-troll wholeheartedly.

  30. Avatar

    Rick Parkhouse Verified Owner

    Wouldn’t usually take the time to review, but this product is exceptionally good. It cleaned up our neglected decking (4 years untreated) almost as good as new with a pressure wash rinse, even removing rust stains from the bbq gas canister. Well worth the money.

  31. Avatar

    Michele Williams Verified Owner

    This is an excellent if rather expensive product. We have 100 sq m of softwood decking around our holiday home which is 500m away from sand dunes and the sea, and have used the Owatrol method since it was new. Be careful how you dilute it as at 3:1 it becomes significantly less effective in giving the wood a ‘new’ appearance.

  32. Avatar

    Steve Oliver Verified Owner

    It works! Used it on our patio which youngest daughter had smeared wet weed and feed seeds all over leaving horrible rust all over it. Tried all sorts until trying this and it was brilliant – very pleased

  33. Avatar

    John Cunningham Verified Owner

    Been meaning to protect my hardwood decking for a few years and let it slip, so I firstly needed to clean the wood prior to oiling it. I spent ages online reading reviews and looking at processes to remove the aged look of the wood and the moss covered areas. I am so lucky I didn’t waste my money on cheaper alternatives to begin and have to redo the deck. I made the decision to spend that little bit more on these products and get it right the first time as I really didn’t want to waste time, effort and money on failed attempts. I bought both the Net-trol to clean and Textrol to protect and though expensive together, its so much cheaper than paying some company to do the job. I applied a coat of Net-trol (using old paint brush) to a pre soaked decking in sections working to the instructions and keeping it wet for 15mins by reapplying a mix of 3-to-1 water with Net-trol that I mixed in an old paint bucket, then washed it all off with a hose and scrubbing some parts with a brush. The wood when dry looked like i had just sanded down the decking, I was amazed at how easy that part was. Left it for a few days to dry fully, then planned to protect it using the Textrol. I bought a mini paint roller from DIY store and poured small amounts of oil into the tray and applied it to the wood using the roller. It was so easy this way and took me about 1.5 hours to apply two coats of oil. The results were stunning! From grey weathered wood that was slowly turning green over the past few years, I now had a deep hardwood decking fully restored for minimal effort and £100 cost. I really can not praise the products enough and how easy it all was to do. Well worth paying a few pound more and getting the right result first time.

  34. Avatar

    Colin Pearsom Verified Owner

    Had limited success with Owatrol removing quite heavy rust stains where a half witted roofing contractor emptied his rusty wheelbarrow water onto my patio and was not spotted for quite a few days. Owatrol removed a fair bit of the staining but took several applications and much elbow grease. Some staining still present but can try again. Perhaps Owatrol performs better on timber.

  35. Avatar

    Richard Jagne Verified Owner

    As with many of your products it seems over priced and the carriage fee takes it way above most competitors products but it is a fantastic product. I have used it on various materials wood,stone,brick even rusty metal with outstanding results. Excellent!!

  36. Avatar


    Net-Trol is the best Decking cleaner restore on the market. – I have tried numerous so called decking cleaners, Like “Does exactly what it says on the tin” – and others which are frustrating, time consuming and very costly given that they just don’t work. Having experienced poor perforing products, I only purchase 1ltr of Net-Trol to test it, well I was amazed how good it is.
    Net-Trol is very easy and safe to use (I am a DIY user not a professional) simply apply with a brush, give it a good scrub and rinse off! (I tried both hosing it off and jet washing it off with very similar results) – My deck had been oiled with Ronseal Decking Oil 5 years ago, which had only lasted about 9 months, my deck had since been left to go very grey and very dirty for over 4 years !
    I was delighted after using Net-Trol, this product does do exactly what it says on the tin, it may be a little more expensive per litre but given that it actually does the job it’s meant to do, it took substantially less time to complete the job and I believe it worked out cheaper, than the main brands.

  37. Avatar

    Eileen Chin Verified Owner

    Excellent product. My furniture was grey, dirty and had algae growing on it after several years of neglect. I could see it change before my eyes as I applied and left the NetTrol to work. I am genuinely delighted. Not many products really do step up to their claims. I have now applied Textrol and my furniture looks as good as new. Something that I did not expect to see!

  38. Avatar

    Philippa Densley

    Just used Net-trol on my VERY uncared for decking and am amazed at the difference already. Have Textrol waiting to be applied and am certain my decking is going to look pristine again – this product is a lot cheaper than a new decking and maintenance is bi- annually – Whoop, Whoop 🙂

  39. Avatar

    Russell Ox Verified Owner

    I used the product for its rust stain removal properties on stone. I had a brand new light (cream) sandstone patio that had been marked by my daughter’s trampoline. The product removed approximately 90% of the worst stains and what was left looked like a natural mark as supposed to a rust stain. I think with repeated treatments it will fade further. On lighter stains Net-trol removed them completely. Very, very impressed and greatly relieved!

  40. Avatar

    David Donaldson

    Just a note to say how delighted I was with Net-trol and the results were amazing. The rust stains came out completely!!! I had tried umpteen different chemicals and solutions but only Net-trol worked. It was a huge relief to my wife and I as we had just spent £6000.00 on the stone and having it laid.

  41. Avatar

    Plan It Contractors – George McKendrick

    It is not often that we write to suppliers but I have done so today to say that put simply your products are one of the best we have seen in 38 years. We bought Net-trol and Textrol for decking now fully restored after going grey having NEVER been treated ever. It has restored the wood, they shed water like an umbrella and look stunning. Our Client is delighted with us and we are delighted with Owatrol. I have heard it said that it is an expensive product; rubbish, an expensive product is one that has to be applied three times, last five minutes and ruins your reputation. Owatrol is quite simply the best that money can buy at any price.

Add a review

Coverage Calculator

How much do I need?

< Calculate Again
This coverage indication is only a guide and actual coverage is dependent on surface type, age, porosity etc.
Coverage: 5-10m2 per litre
Tools: Soft brush, stiff bristle/nylon brush, powerwasher
Suitable for: Exterior use
Clean up: White Spirits
Working Time: 5-20 mins
Suitable Surfaces: All exterior wood surfaces, cement, stone, plastic, GRP

Technical Data

Read the full technical information including MSDS for Net-trol on our corporate website.