Zeroflame AquaSteel WB+ intumescent coating provides an easy and efficient fire protection alternative to cladding structural steel members in fire rated board! Zeroflame have combined the ability to protect standard steel sizes and profiles for both 30 and 60 minutes fire resistance in a single product.
By creating AquaSteel WB+ they have fast tracked the time consuming process of gathering all details on the steel members and calculating the exact of amount of materials needed for each steel member. This makes things so much easier!
Achieves both 1/2 hour and 1 hour fire resistance on structural steel
Suitable for use on most standard steel sizes and profiles
Tested to internationally accepted standards - BS476 Parts 20 & 21
Can be applied by brush, roller or airless spray
Full specification and application details included on container label
Certificate application included with each container
Available in 2.5L, 5L and 10L sizes
Each tin has a certificate application form on the back of the label. To receive a 'Certificate of Supply' for your purchase, after application of the product, simply complete the form on the label and send to the stated address and a certificate will be returned to you within 7-10 working days.
IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contactedto obtain a tailored specification and any advice necessary before you place an order for fire protection products. Fire protection products are non-returnable except in accordance with Condition 8 of the Terms and Conditions. We will not be held liable for any resulting damage to property, human life or monetary costs incurred due to the incorrect specification you have prepared or use of fire protection products caused by your negligence, including your failure to have contacted us to obtain the relevant advice/specification.
It is your responsibility to read the Product Data Sheets (available below) before you place an order and prior to application of the product. The content of this website is our best recommendation and is not advice. Coverage rates quoted are approximate, you agree that coverage depends on the condition of the substrate, surface absorption, texture and application method. We ALWAYS recommend a trial area is coated to ensure the product meets your requirements before use.
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.
No, it has been fire tested to BS476 Parts 20 and 21 by Warrington Certification Limited - Certifire Certificate of Approval No CF 655 a copy of which can be emailed on request.
Jo Chandler on 10/05/2019
Hi, I am looking for fire retardant paint for metal walls, suitable for food production site Thanks Jo
We would require some more information for this enquiry, could you please contact our Technical Team on 0113 2455450 (option 2) or email [email protected]
David on 22/04/2019
I have a CHS 88.9x4.0mm that requires 30min fire protection. It has been primed with zinc-rich paint. Please advise a suitable tie coat and intumescent product. I will need to colour match top coat the column at a later date. Thanks in advance.
A standard zinc phosphate primer is recommended as a tie-coat. Water based primers are not recommended because they draw the zinc salts out of the primer and they don’t react well to heat. Once prepared, Zeroflame Aquasteel WB+ and Zeroflame Aquasteel WB+ Finish can be used.
Tony Auger on 26/03/2019
I have two vertical CHS columns 2.50 metres long each The diameter of the CHS is 139.70 mm Firstly, I calculate that to achieve a 30 minute FR the columns will require about 2 and a half litres of Aquasteel WB+ per m2 of surface area. So, approx. 5.50 litres total quantity. I have purchased 10 litres so quantity is ok, however, this does seem a heavy coverage rate and will surely be a rather thick coat. Indeed, what will the approx. overall thickness of the applied paint be and does it have to be a single coat application. I also have purchased the WB+ finish paint (black) to give the decorative finish I require. We are also hoping that the finish of the fire paint prior to the top coat will not be too rough prior to this decorative top coat paint. We can not spray paint due to the columns being within a finished new kitchen environment, so brush or roller it has to be. Any advice on application and how do you measure microns of paint, as we finally have to get a Building Control certificate, together with the Aquasteel certificate for sign off. As I say, I have purchased the paint and had one painter tell me that he can't achieve the required fire paint coatings with a brush or roller. Very appreciative of your comments. Thank you.
You have calculated 5.5 litres of Zeroflame Aquasteel WB+ correctly so each column should recieve 2.75 litres. Assuming the steel is suitably primed your applicator must apply 2.75 litres of Zeroflame Aquasteel WB+ to each column which will result in a DFT (Dry Film Thickness) of 1,680 microns. Application should not be attempted in 1 coat, instead your applicator should see how much they can apply comfortably and still maintain an acceptable smooth, decorative finish. Then allow to dry and apply further coats until the 2.75 litres has been used in full and then move to the next column. It would also be prudent to monitor the rate of application per coat with a Wet Film Gauge (one was sent FOC with your delivery) - total WFT to acheive is 2,330 microns.
Jon Roberts on 08/01/2019
I need to provide 30 mins fire protection to a 70x70x5 SHS post which has a galvanised finish do i need to prep the post before painting? and if so with what?
Assuming the steel in question is in, and will remain in an internal, dry, heated environment, the coverage rate for Zeroflame Aquasteel WB+ to achieve 30min protection on your section size would be 1.2m² per litre. The bare galvanised steel should first be primed with Zinsser Bulls Eye 1-2-3 (see product data sheet for details on preparation), then the Zeroflame Aquasteel WB+ applied, then the Zeroflame Aquasteel WB+ Finish if the steel is remaining visible.
peter on 06/12/2018
I need to provide 30 minute protection to a 100x100x10 SHS 3000mm tall column. Can you please confirm quantities in order to receive the relevant certificate. Many Thanks
You wold require 1 litre of Zeroflame Aquasteel WB+ so the smallest pack size (2.5lt) would be sufficient.
ian Westmorland on 16/11/2018
I require a 30 min fire proofing on steels in my loft at the following sizes: 2 number of 254x254x6300 UC 1 number of 152x152x4800 UC Can you please let me know the best product and quantity i would require? Thanks,
Assuming your sections are mild steel, will remain permanently in an internal, dry environment and require 30min fire protection then you would require 10 litres of Zeroflame Aquasteel WB+. The steel must be first suitably primed with something like Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion and then finished with Zeroflame Aquasteel WB+ Finish in the colour and finish of your choice.
Once applied certification can be applied for by completing and returning the application form on the back of label on the can. Please read and understand the product data sheets taking careful note of assumptions made about steel sections sizes, minimum thicknesses, primer compatibility, etc.
Shaheed on 09/11/2018
Can I overpaint zero flame with a different colour water based paint?
Hi I am trying to find a clear fireproof paint for a steel support. I love the natural colour of the natural steel and want to not put any colour on it.
We do not offer a clear fire protection coatings for steel and are not aware of any currently in the market.
Luke on 25/06/2018
Hi, I'm just finalising an extension and we have one exposed piece of steel (not boxed in) and need to treat this appropriately. It's a vertical steel sitting on the corner of the extension - with bi-fold wrapping around it either side. It's only 15cm in diameter and 2.2 metres high. Can I use this product directly on the steel? Are you allowed to then paint on top of this - so matching the colour of the bi-fold doors? Best Luke
Assuming your column is mild steel, will remain permantly in an internal, dry environment, requires 30min fire protection and has a minimum wall thickness of 4mm then you would require 2 litres of Zeroflame Aquasteel WB+. The steel must be first suitably primed with something like Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion and then finished with Zeroflame Aquasteel WB+ Finish in the colour and finish of your choice.
Robert Evans on 22/06/2018
we would like to use your product to achieve 1 hour fire protection on existing wood panelling in a listed building. The panelling has been painted many times over the years and i am worried that when we apply your paint it may cause blistering and cracking. is this likely to happen?
Zeroflame Aquasteel WB+ is for use on steel not timber. For 60min protection we would instead recommend Thermoguard Timbercoat 30 & 60 Minute System. If you contact our technical Team (0113 2455450 opt. 2 or [email protected]) with how many square metres you have to protect and the thickness of the timber, they will be able to give you a full specification and quotation for your project.
Ben on 08/03/2018
I want to paint some steel columns and then cover with a powder coated aluminium cover. Does the aluminium overclad effect the performance of the paint or should we paint the aluminium cladding with the ford paint instead? Thanks, Ben
We could not offer anything to fire protect the aluminium cover but if the structural steel was coated successfully with something like Zeroflame Aquasteel WB+, then in the event of a fire the intumescent requires an uninhibited air gap for expansion equivalent to 50 x the DFT (dry film thickness) of the intumescent.
Nicola Greenwood on 28/10/2017
Question: If the steel rsj has a red oxide coating on it can Zero flame be painted directly onto this or does another primer need to be painted onto the steel first please? Many thanks.
Steelwork to be coated with Zeroflame Aquasteel WB+ must be primed with an anti-corrosion primer suited to the intended environment of the building and applied to the manufacturers specification with the exceptions that the Dry Film Thickness does not exceed 100 microns and that thermoplastic, bitumen or chlorinated rubber coatings are not used. If the steel has been galvanised or coated with a zinc rich primer, a suitable tie-coat should be applied (consult the Technical Department for guidance).
Before applying Zeroflame Aquasteel WB+, patch prime any damaged areas and ensure the surface is dry, free from rust, oil, grease, dust and other contaminants. Existing decorative finishes must be removed.
Nigel french on 20/09/2017
Question: How many coats of Zero flame required to steel beam? Beam has the normal dark pink coating applied. Thanks.
The number of coats and spreading rate you need to apply will depend on the steels you have to protect and the level of fire protection you require. Download the Technical Data Sheet (TDS) from the 'DATASHEETS' tab on the product page for details.
ian on 13/09/2017
Question: For new un coated steel what is the best route. should i let the fabricators prime them in there normal red finish or use the Aquastel WB+ from the start?
Question: Do you have to use a primer with Zeroflame Aquasteel WB+?
Steelwork to be coated with Zeroflame Aquasteel WB+ must be primed with an anti-corrosion primer suited to the intended environment of the building and applied to the manufacturer's specification with the exceptions that the Dry Film thickness does not exceed 100 microns and that thermoplastic, bitumen or chlorinated rubber coatings are not used. If the steel has been galvanised or coated with a zinc-rich primer, a suitable tie-coat should be applied. Consult Technical Department for advice.
Before applying Zeroflame Aquasteel WB+, patch prime any damaged areas and ensure the surface is dry, free from rust, oil grease, dust and other contaminants. Existing decorative finishes MUST be removed.
Hol on 13/10/2015
What is a suitable primer for the Zeroflame Aquasteel WB+?
I have a CHS steel column in my kitchen which requires 30 minute protection. Can Zeroflame Aquasteel WB+ be overpainted with normal waterbased eggshell?
No. The spreading rate for 30 minute protection on a CHS (assuming it is made from steel at least 4mm thick) will be 0.4m² per litre. Once Zeroflame Aquasteel WB+ has been applied as required, if it is to remain visible in the property it must be overcoated with Zeroflame Aquasteel WB+ Finish, this is a water based eggshell finish that can be mixed to any RAL or BS colour.
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Tested and assessed to EN 13381-8
CE marked product, ETA 15/0053
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