Rust-Oleum 4900 Polycoat 2K is a clear, water-based, 2-component polyurethane topcoat for use on wood, concrete and pre-painted surfaces, also serves as an anti-graffiti coating. Very abrasion resistant, available in a matt or gloss finish, does not yellow, can be used internally and externally, resists boiling water, alcohol, coffee, red wine, dilute acid and alkalis.
Clear varnish for parquet to protect against stains and scratches
Clear sealer for concrete to decrease dusting and increase cleanability
As an anti-graffiti coating
As a topcoat on previously painted surfaces to provide extra protection and/or change gloss level
Rust-Oleum 4900 Polycoat 2K is a clear, water-based, 2-component polyurethane topcoat for use on wood, concrete and pre-painted surfaces, also serves as an anti-graffiti coating.
Recommended Uses
Clear varnish for parquet to protect against stains and scratches
Clear sealer for concrete to decrease dusting and increase cleanability
As an anti-graffiti coating
As a topcoat on previously painted surfaces to provide extra protection and/or change gloss level
Features & Benefits
Clear, water-based, 2K polyurethane topcoat
Available in matt or gloss
Very abrasion resistant
Does not yellow; ideal for interior and exterior
Resists boiling water, alcohol, coffee, red wine, dilute acid and alkalis
Ensure surface to be varnished is clean, dry, sound and free from wax, oil or any other contamination. If wax has been used clean the surface thoroughly with white spirit prior to sanding. Bare wood should be sanded to a smooth surface, always working with the grain. Sound previously varnished surfaces should be lightly sanded to provide a key. New concrete must be at least 6 months old prior to varnishing. Concrete must be clean, dry and free from any surface laitance (a weak dusty layer on new concrete) and any other surface contaminants such as oils, grease, dirt etc. prior to applying the varnish. Not suitable for direct use on power floated concrete.
Directions for Use
Base and activator are supplied in correct proportions. First stir the base component, then add activator gradually to the base, and mix thoroughly. DO NOT MIX PART UNITS. Wait 5 minutes after mixing. Do not store mixed product (residue) in a closed can. Badly activated or incorrectly mixed materials will affect performance and may cause early failure or discolouration. When used outdoors on top of pre-painted surfaces: If the old paint is not UV-resistant, the use of Multi-surface PU Heavy-Duty Varnish is not recommended.
Application
(Brush) - Apply evenly using light strokes following the grain of the wood. For best results 3 coats are recommended on new wood/concrete (dilute 1st coat with 10% water) and 2 coats on previously varnished surfaces.
(Roller) - Use a short nap mohair roller. For best results 3 coats are recommended on new wood/concrete (dilute 1st coat with 10% water) and 2 coats on previously varnished surfaces.
Notes
Not suitable for use on plastic type materials, e.g. imitation wood.
Do not wash the varnished surface for at least 3 days after application. If water is spilled on it during this period gently wipe off with a soft dry cloth.
Taber abrasion: weight loss CS17 / 1000 cycles: 17 mg
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
does the polycoat keep once mixed or do you have to use straight away ? i have read about not storing in the tin but can it be stored in another tub ?
Answer from Rawlins’ Technical Team:
Once the two components have been mixed the pot life at 20°C is 3 hours.
After this time the product is no longer usable.
Joseph Watson on 2022-11-16 14:21:18
Question:
Can this be used on recently painted kitchen worktops?
Answer from Rawlins’ Technical Team:
This can be applied to previously painted substrates, we would recommend waiting till the previously applied paint has cured, prepared, then test for compatibility and adhesion on a small area prior to full application.
The previously painted worktops must be clean, dry, sound and prepared as detailed in the technical data sheet.
Joe S on 2022-09-22 13:01:54
Question:
I want to use this as a sealant for a floor covered in Rustoleum Mathys Pegakote. I'm keen to reduce slip risk, should I/ can I add antislip additive to this or the pegakote?
If this is applied outside of the overcoating window of 7 days, the previously painted floor will need to be clean, dry, sound and sanded prior to application.
This product has a thin film build so it would not normally be recommended to use an anti-slip additive with this product.
A better option would be to apply further coats of Rust-Oleum Mathys Pegakote as this has a higher film build so will more securely anchor in the aggregate.
A Paterson on 2022-07-25 18:02:59
Question:
Can this be used on decking which has been stained/painted
Answer from Rawlins’ Technical Team:
While this product can be applied on previously painted substrates, we cannot recommend it for this application to a decking.
Joanne on 2022-06-03 19:51:59
Question:
I have painted my tiles with special floor/tile paint. Could I use this to seal it / add extra protection
Answer from Rawlins’ Technical Team:
Yes this product can be applied to previously painted floors assuming the area is clean, dry, sound and prepared as detailed in the technical data sheet.
We would recommend testing for compatibility and adhesion prior to full application.
Nick on 2022-04-23 17:50:16
Question:
Can this product be used on previously varnished floors?
Answer from Rawlins’ Technical Team:
Yes this can be applied to previously varnished floors, we would recommend testing for compatibility and adhesion prior to full application on a small area.
The previously varnished floor must be lightly sanded prior to application.
Cherry Austin on 2021-07-11 07:53:20
Question:
Could this product be used to finish a kitchen worktop? Is it sufficiently abrasion resistant, and is it food safe?
Answer from Rawlins’ Technical Team:
Unfortunately this is not food safe but it is very abrasion resistant, assuming the worktops are previously painted or a solid timber, they are clean, dry, sound and prepared as detailed in the technical data sheet this can be used.
We would recommend testing for compatibility and adhesion on previously painted substrates.
joan Higham on 2021-05-27 08:55:30
Question:
I only require a small amount of Rust-Oleum 4900 Polycoat 2K. to repair a small damaged area on a hall floor. Can I just mix part of the tin and keep the rest for any emergencies in the future.
Answer from Rawlins’ Technical Team:
The manufacturer does not recommend part mixing units but lists the mixing ratio as 4:1 by weight should you wish to part mix under your own choice.
Damian on 2021-02-24 11:01:59
Question:
Hi, I want to use Rustoleum Epoxy Shield Garage kit with chips and want to apply clear top coat to make it smooth and glossy. Can this product be used on top?
Answer from Rawlins’ Technical Team:
Yes this can be applied on top of the Rust-Oleum Epoxy Shield Garage Floor Kit assuming the floor is clean, dry, sound and within the maximum overcoat period of the Epoxy Shield Garage Floor Kit which is 7 days.
William Richardson on 2020-11-14 16:12:41
Question:
How can I clean brushes after using Rust-Oleum 4900 Polycoat 2K ?
Answer from Rawlins’ Technical Team:
This is a two component waterbased paint prior to the paint curing wash the brushes in water.
Peter Middleton on 2020-07-01 21:28:15
Question:
hi im making skateboards and need something to protect the wood surfaces. would this be ok?
Answer from Rawlins’ Technical Team:
Assuming the timber is clean, dry and sound this product can be used for this application. On new timber 3 coats is recommended with the first coat thinned 10% with clean water.
Aishah Khatun on 2020-06-05 00:40:54
Question:
Hi I wanted to paint over my satin finish kitchen cabinets. Would this be suitable to change it from a satin finish to a gloss finish?
Answer from Rawlins’ Technical Team:
Yes Rust-Oleum 4900 Polycoat 2K could be used to provide a gloss finish, it will improve abrasion resistance, is easy to clean and will not yellow. Resists boiling water, alcohol, coffee, red wine, dilute acid and alkalis.
Michael Jones on 2020-05-19 13:50:24
Question:
I’ve painted an Ikea unit which hold vinyl records with an acrylic water based paint. I want the strongest coating I’ll only be able to put one coat on because the pot life is 3 hours but you can’t recoat until 4 hours. Would one coat of this be better than a few coats of a polycyclic or 1k clear varnish such as Polyvine extreme. Thanks
Answer from Rawlins’ Technical Team:
You would only mix the quantity you need to use for one coat, the rest of the material remains unaffected until you need to mix more to apply your second or third coat, etc. Download the product data sheet from the 'Attachments' tab for details on mixing the product.
ben on 2019-11-03 23:15:02
Question:
hi, on the description it say 20m2 per litre, is this correct? what is the viscosity of it? can I spray it?
Answer from Rawlins’ Technical Team:
The coverage rate is recommended as 13.5m²/l at 30 µm dry film build for horizontal surfaces and 20m²/l at 20 µm dry film build for vertical surfaces. The product is for Brush or Roller application only - not spray. You can download the product data sheet from the 'Attachments' tab on the product page for more details.
Graham Thurman on 2019-07-06 12:38:42
Question:
Once mixed, what is the pot-life of the product please? I plan to test a spare floor board first, however do not want to reduce the efficacy of the product if waiting, say, 2 days after mixing for the actual floor coating. Same applies for the 2nd/3rd coats. Is it better to buy smaller quantities so that one mix is used for each coat? Many thanks
Answer from Rawlins’ Technical Team:
The pot life of the product is 3 hours and the drying time for the product to receive further coats is 4 hours.
stuart burleigh on 2019-06-05 10:12:50
Question:
Is the Blackfriars heavy duty floor varnish better for a shop floor, or the Rustoleum 4900?
Answer from Rawlins’ Technical Team:
These products are very similar, Blackfriar Heavy Duty Varnish comes in larger pack sizes, is available in Satin or Gloss finishes and is more suited to bare concrete or timber surfaces. Rust-Oleum 4900 Polycoat 2K comes in smaller pack sizes and is available in Matt or Gloss finishes and is able to be applied over more varieties of existing coatings.
Mary Stevenson on 2019-06-02 22:22:30
Question:
I have just finished upcycled my kitchen. used a kitchen cupboard paint. when it was dried, it wasn't as glossy as I first thought, it was Satin Paint. Could I use this product to give a gloss finish? Would it also strengthen and protect the cupboards? Any and all advice welcome! I live in the UK
Answer from Rawlins’ Technical Team:
Yes Rust-Oleum 4900 Polycoat 2K could be used to provide a gloss finish, it will improve abrasion resistance, is easy to clean and will not yellow. Resists boiling water, alcohol, coffee, red wine, dilute acid and alkalis.
Sam on 2019-01-02 15:32:07
Question:
In the instructions it says to dilute the first coat with 10% water... do you have to do this? Will it effect the result if you don’t? How much water would I need to use for a 2.5 l tin of varnish?
Answer from Rawlins’ Technical Team:
Diluting with 10% water is only recommended on the product data sheet for the first coat on new wood/concrete. If you needed the whole 2.5lt tin for the first coat on new wood/concrete, 10% dilution would mean you should add 250ml of clean, cold water.
Stephen george on 2017-07-27 08:03:00
Question: Rust is coming through concrete render where the angle bead is. What can I coat it with to stop the rust coming through before I sandtex it ?
Answer from Rawlins’ Technical Team:
Zinsser Cover Stain has been used in this situation to block the rust stains however there is no guarantee how long it will hold the stains back. As soon as any trace of moisture gets into the metal beading the rusting process will start again and stains are likely to bleed through once more. It would not be possible to say how long the primer would hold the staining back.
The render surfaces must be completely dry before applying the primer.
Applying 2 coats of the Cover Stain will give a little more protection and hold back the staining for longer than 1 coat.
The Cover Stain can be overcoated with a standard masonry type coating.
Note that the only 100% effective way to solve the problem would be to remove the affected angle beading and replace with new stainless steel or plastic beading.
We no longer stock this product, but can recommend Hydron AG2 Graffiti Remover as a great alternative.
Please note: it is important to check that any alternative product is suitable for your requirements, as our suggestion is given in good faith but without warranty. If you are in any doubt please first contact our technical team on 0113...
General Painting Application Kit from Rawlins Paints provides the basics for any painting project. Whether it is a one off job, or you just want to make sure the right application tools get to site.
Provides an economical way of making sure you will have what you need
Ideal for interior and exterior paint projects
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