Zeroflame Aquasteel WB+

Reference ZFP400045

Brand Zeroflame

Search ID ZER272

Zeroflame Aquasteel WB+ is a white thin-film waterbourne intumescent coating with a new and improved formula designed to provide 30 and 60 minutes fire resistance on standard structural steel members in internal environments. It provides an easier and more efficient alternative to cladding steel members in plasterboard.

New improved formula
Achieves both 1/2 hour and 1 hour fire resistance on structural steel
Suitable for use on all standard steel sizes and profiles
Tested to British Standard - BS476 Part 21:1987
Can be applied by brush, roller or airless spray
Simple specification
If a decorative finish is required, the product can be overcoated with Zeroflame Aquasteel WB+ Finish which has a wide range of colour options (RAL, BS & NCS)
Click to jump down to Technical Data

Colour

White

Size

Bulk Order Discounts

Min. Quantity	Discount	Price Per Item
5	5%	£82.18
10	10%	£77.86
Bulk discounts applied in basket

£86.51(ex. VAT)

£103.81 (inc. VAT)

Quantity

Please choose your colour

In Stock and Available for Delivery (See Delivery Options Below)

ColourPicker Explained

In general we sort colours for products into 2 main groups - ‘Ready Mixed’ and ‘Tinted’.
Tinted colours will always be more expensive than Ready Mixed colours as they need to be produced at the time of order using a tinting machine dispensing colourant into a base*.
During busy periods, this means that tinted colours could take longer, for example – a ready mixed colour ordered on a 3-5 day delivery might arrive within 3 days, however a tinted colour might take the full 5 days to arrive.

To find Ready Mixed colours, search "ready mixed" or select the Ready Mixed 'colour chart'. To see Tinted colours select a colour chart such as RAL, BS, NCS, etc. or search for a colour/hue to see available or related options.

To ensure fair pricing, we split colours into ‘Price Bands’ to group together similar priced colours. If you wish to search for the cheapest tinted colours, always select Price Band 1.

We make every effort to list all available colours, however we also offer a colour match service which can be accessed by contacting our Technical Team on 0113 245 5450 (option 2) or emailing [email protected]

*Colours are sold in the nearest tin size but actual paint volume per tin may vary up to 10% depending on colour

Colour reproduction of the Products on the Site is limited by the technology used to deliver web pages and by the colour representation of Customer’s own monitor and computer set-up. We have made every effort to display as accurately as possible the colours of our Products but we cannot guarantee that the colour shown on Customer’s monitor’s display will accurately reflect the colour of the Product on delivery. We recommend that Customer first purchases the smallest Product available or access an industry standard colour chart in person (and not digitally) to ensure that the colour is acceptable for its purposes.

21 question about the product

Description

Zeroflame Aquasteel WB+ is a white thin-film waterborne intumescent coating with a new and improved formula designed to provide 30 and 60 minutes fire resistance on standard structural steel members in internal environments. It provides an easier and more efficient alternative to cladding steel members in plasterboard.

Normally calculating the required material to achieve fire protection for structural steel involves the complicated and time consuming process of getting details of all the steel members involved in the project and calculating the exact amount of material required for each one.

However, new and improved AquaSteel WB+ intumescent coating combines the ability to protect all standard steel sizes and profiles for both 1/2 hour and 1 hour fire resistance in a single product.

If a decorative finish is required, the product can be overcoated with Zeroflame Aquasteel WB+ Finish which has a wide range of colour options (RAL, BS & NCS)

Features & Benefits

New improved formula
Designed to provide 30 and 60 minutes fire resistance on standard structural steel members in internal environments
Provides an easier and more efficient alternative to cladding steel members in plasterboard
Combines the ability to protect all standard steel sizes and profiles for both 1/2 hour and 1 hour fire resistance in a single product
Tested to British Standard - BS476 Part 21:1987
Waterborne - Suitable for C1 and C2 environments.
Can be applied by brush, roller or airless spray
Simple specification
If a decorative finish is required, the product can be overcoated with Zeroflame Aquasteel WB+ Finish which has a wide range of colour options (RAL, BS & NCS)

Coverage & Application Rates

Zeroflame Aquasteel WB+ is suitable for all types of structural steel, subject to the following miniumum steel thicknesses:

Section	Flange/Wall Thickness	Hp/A
Universal Beams	Flange Thickness - 7.6mm	300m-¹
Universal Columns	Flange Thickness - 6.8mm	300m-¹
Hollow Sections (1/2 hour)	Wall Thickness - 3.6mm	300m-¹
Rectangular Hollow Sections (1 hour) 4 sides	Wall Thickness - 5.0mm	205m-¹
Rectangular Hollow Sections (1 hour) 3 sides	Wall Thickness - 8.0mm	205m-¹
Circular Hollow Sections (1 hour)	Wall Thickness - 6.0mm	205m-¹

The table below gives the recommended coverage rates in m²/litre and wet and dry film thicknesses (WFT and DFT) in mm (1mm + 1000 microns):

Coverage Rates
Exposure	Horizontal Beams			Vertical Columns
	½ Hour Fire Resistance
	m²/litre	WFT	DFT	m²/litre	WFT	DFT
4-Sided	2.30	0.41	0.28	2.3	0.41	0.28
3-Sided	3.00	0.34	0.24	2.3	0.41	0.28
	1 Hour Fire Resistance
4-Sided	1.1	0.9	0.63	1.1	0.9	0.63
3-Sided	1.40	0.7	0.49	1.1	0.9	0.63
	Hollow Sections
	Square & Rectangular			Circular
	½ Hour Fire Resistance
4-Sided	1.9	0.52	0.37	1.9	0.52	0.37
	1 Hour Fire Resistance*
4-Sided	0.55	1.83	1.28	0.55	1.83	1.28

*Limited to Hp/A - 205m-¹

For thinner/lighter members, please consult Zeroflame or contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.

Maximum Application Rates per coat:

Application Type	m²/litre	Wet Film	Dry Film
Brush/Roller	1.6	0.61mm	0.43mm
Spray	1	1.00mm	0.70mm

Theoretical Coverage:

0.43mm DFT:1.60m²/litre; 0.85kg/m²

Product Data

Technical Data
Specific Gravity	1.38 ± 0.02
Volume Solids	70% ± 2%
VOC	6g/l

Storage Instructions

Should be stored internally between 5°C and 30°C
At temperatures above 25°C, the shelf life will be reduced
Shelf life is usually 6 months in sealed containers
PROTECT FROM FROST

Surface Preparation

Steelwork must be primed with an anti-corrosion primer suited to the intended environment of the building
The primer must be 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 coating are not used
If the steel has been galvanised or coated with a zinc-rich primer a suitable tie-coat should be applied*
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.

*Please consult Zeroflame or contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.

Site Conditions During Application

Recommended for application to dry, protected, interior structural steels only
If the product is allowed to get wet, it is likely to become damaged and may cause blistering and wrinkling to occur
The product should only be applied when the air and steel temperatures are above 5°C
Relative humidity should be below 80% for successful application
Steel surface temperature should be a minimum of 3°C above the dew point
Ensure the steel is dry and protected from contact with rain or condensation during the application, drying and curing process

Application Methods

Zeroflame Aquasteel WB+ is supplied ready for use and must not be thinned but should be thoroughly mechanically stirred prior to use.

Application Type	Details
Brush	3" Synthetic Filament Brush
Roller	4" Roller, 3/8" nap fabric
Airless Spray	Operating pressure: 2500-3000 psi, Tip Size: 17-20 thou, Fan Angle 20°-40°, Hose Diameter: 10mm internal, Hose Length: Not exceeding 60 metres

Airless Spraying:

The product may be applied up to a maximum wet film thickness (WFT) of 1.0mm in a single spray coat comprising of several quick passes
Achieving maximum loadings will depend on site conditions
It may be possible to apply two coats in one day, particularly if the atmospheric temperature is above 20°C and the relative humidity below 70%
However, before doing this ensure that the previously applied coat is dry, particularly in the web/flange junctions

Brush/Roller Application:

Low surface temperatures may cause slumping at recommended coverage rates
To achieve maximum thickness when brushing, use a 'laying on' technique with a well loaded brush

Drying Times

Drying times between coats (20°C and 60% RH) are as follows:

Brush/Roller: - 4 hours
Spraying: - 6 hours
Application of Zeroflame Aquasteel WB+ Finish: Allow a minimum of 16 hours after final coat of Aquasteel WB+ before applying topcoat.

If applying Zeroflame Aquasteel WB+ off site, ensure the coating is fully cured, hard and dry before transport and erection, any damaged areas being made good.

Protect from frost and wetting until dry.

Health & Safety

Ensure good ventilation during application and drying
In case of insufficient ventilation, wear suitable respiratory equipment
Do not breathe spray
Wear suitable protective clothing and gloves
In case of contact with skin, wash well with plenty of soap and water
In case of contact with eyes, rinse immediately with water and seek medical advice
Keep out of reach of children
When not in use keep containers tightly closed

Please contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information.

IMPORTANT FIRE PRODUCTS NOTICE: The information displayed on this website should be used as a guide ONLY and our Technical Department should be contacted to 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 and should be applied only by an individual with the necessary expertise and experience. 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.

Product Details

Reference 272-887302

Data sheet

For Use By: Professional Use
For Use By: Industrial Use
Interior / Exterior Use: Interior
Water / Solvent Based: Water
For Use On: Steel
Application Method: Brush, roller, spray
Colour: Fully tintable
VOC Levels: Ultra-Low (5-49 g/l)
Single, Two or Three Pack: Single
Product Certifications: BS476 Parts 20 and 21
Pack Size: 2.5L, 5L, 10L
Key Features: Achieves both 1/2 hour and 1 hour fire resistance on structural steel
Coverage: 0.43mm DFT:1.60m2/litre; 0.85kg/m2 (Refer to table in data sheet)
Solids by Volume: 70% ± 2%
VOC: 6g/l
Touch Dry: 2 hours
Drying time: Brush/Roller: - 4 hours (20°C and 60% RH)
Drying time: Spraying: - 6 hours (20°C and 60% RH)
Specific Gravity: 1.38 ± 0.02
Best Seller: Best Seller
Fastest Delivery: Next Working Day

Attachments

Download

Product Data Sheet

Download

Safety Data Sheet

Download

Test Report

Download

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.

Send us your question

Nicholas Midgley on 2022-08-25 07:31:33	Question: How frequently must intumescent paint be reapplied to steel? There is a topcoat in place.
	Answer from Rawlins’ Technical Team: Applied intumescent paint systems should be regularly inspected, if they are damaged or showing signs of wear they should be maintained or reapplied. The exposure and location will determine how often this could be.

Alice on 2021-04-08 15:33:51	Question: 3 questions from an interior designer. Application for existing interior steel beams: Will this paint a) give a smooth finish? b) be able to be painted in a colour on top? c) if it can be painted, what paint, would we use a paint suitable for metals?
	Answer from Rawlins’ Technical Team: This is an intumescent paint they are all thick and the smoothness of the finish will be down to the application. This can then be over painted with Zeroflame Aquasteel WB+ Finish. This is available in many RAL and BS colours. No other paint should be used to over paint the system.

Mia Anfield on 2021-02-19 16:48:37	Question: I have a 139.7 x 6.3mm CHS x 2400mm high internal steel column that requires 30min fire protection. It has been zinc primed by the steel manufacturer. 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.
	Answer from Rawlins’ Technical Team: Thank you for the enquiry, we have contacted you directly.

David de la Pena on 2019-06-03 14:09:59	Question: Is this Product BBA Approved?
	Answer from Rawlins’ Technical Team: 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 2019-05-10 14:20:33	Question: Hi, I am looking for fire retardant paint for metal walls, suitable for food production site Thanks Jo
	Answer from Rawlins’ Technical Team: 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 2019-04-22 10:20:59	Question: 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.
	Answer from Rawlins’ Technical Team: 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 2019-03-26 14:31:55	Question: 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.
	Answer from Rawlins’ Technical Team: 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 2019-01-08 14:03:25	Question: 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?
	Answer from Rawlins’ Technical Team: 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 2018-12-06 08:49:57	Question: 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
	Answer from Rawlins’ Technical Team: You wold require 1 litre of Zeroflame Aquasteel WB+ so the smallest pack size (2.5lt) would be sufficient.

ian Westmorland on 2018-11-16 10:53:58	Question: 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,
	Answer from Rawlins’ Technical Team: 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 2018-11-09 08:24:57	Question: Can I overpaint zero flame with a different colour water based paint?
	Answer from Rawlins’ Technical Team: Zeroflame Aquasteel WB+ must only be overcoated with Zeroflame Aquasteel WB+ Finish.

Salina on 2018-07-26 16:01:41	Question: 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.
	Answer from Rawlins’ Technical Team: We do not offer a clear fire protection coatings for steel and are not aware of any currently in the market.

Luke on 2018-06-25 12:18:12	Question: 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
	Answer from Rawlins’ Technical Team: 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 2018-06-22 09:06:34	Question: 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?
	Answer from Rawlins’ Technical Team: 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 2018-03-08 19:20:52	Question: 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
	Answer from Rawlins’ Technical Team: 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 2017-10-28 09:46:28	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.
	Answer from Rawlins’ Technical Team: 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 2017-09-20 11:32:50	Question: How many coats of Zero flame required to steel beam? Beam has the normal dark pink coating applied. Thanks.
	Answer from Rawlins’ Technical Team: 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 2017-09-13 16:09:54	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?
	Answer from Rawlins’ Technical Team: Zeroflame Aquasteel WB+ must NOT be applied to bare steel. All steel should be suitably primed before application. Zeroflame recommend Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion for bare mild steel and Zinsser Bulls Eye 1-2-3 after preparation.

KJD on 2017-06-19 14:35:59	Question: Do you have to use a primer with Zeroflame Aquasteel WB+?
	Answer from Rawlins’ Technical Team: 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 2015-10-13 04:54:53	Question: What is a suitable primer for the Zeroflame Aquasteel WB+?
	Answer from Rawlins’ Technical Team: We recommend Rust-Oleum 3369/3380 CombiPrimer Anti-Corrosion.

John Smith on 2015-06-08 20:31:56	Question: I have a CHS steel column in my kitchen which requires 30 minute protection. Can Zeroflame Aquasteel WB+ be overpainted with normal waterbased eggshell?
	Answer from Rawlins’ Technical Team: 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.

Zeroflame Fire Retardant Treatment

Zeroflame Fire Retardant Treatment is for use on bare, solid wood with a minimum thickness >12mm: Soaks virtually ‘invisibly’ into the wood Achieves Euroclass B s2 d0 (replaces UK Classes ‘0’ and ‘1’ BS 476 Part 6/7*) Can be overcoated for decorative purposes with waterborne, non-flammable stains, varnishes and paints For internal and...

£156.00 (ex. VAT)

Shop now