Sherwin-Williams Fast Clad 7220 is a two component, fast-drying, phenalkylated zinc phosphate epoxy primer used as a multi-functional low temperature curing coating for the protection of carbon steel.
For Industrial Use Only
Specified for use as a primer for structural steel on blast cleaned steel for internal and external environments
May also be used as a high build intermediate coat as well as the final coat where a low sheen industrial & functional finish required
Indefinitely overcoatable with epoxy systems
May be applied between 75 and 225 microns DFT in one coat depending on specification requirement
Meets the performance requirement of BS EN ISO12944-2:2017 (C5) as part of a three coat system
Quick-drying: Touch-dry in 15 mins at 23°C
Please Note: 20L Dark Grey, Red Oxide and Off White are also available subject to a minimum order quantity on 1,000L and an extended lead time - please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details.
In the case of recoating Fast Clad 7220 with these top coats after extended periods of time (without maximum stated limits) the following conditions shall be matched in the moment of the finish application:
1. The previous coating has been applied at the recommended dry film thickness and in accordance with good painting practices. Is free from any application defects and the dry film is tightly adherent.
2. The surface is free from all type of contaminants such as soluble salts, oily and greasy materials and any other visible contamination that can affect intercoat adhesion. Any detected contamination shall be cleaned by adequate methods prior to the finish application.
3. Surface does not present burn marks or any type of defect caused by mechanical, chemical or other type of damage. All such damaged areas shall be repaired with the original coating system before applying the finish coat.
4. If under direct sunlight exposure for long periods the surface shall be checked for degraded superficial layer that can affect intercoat adhesion. If such layer is observed it should be removed by means of water jetting, abrading, solvent cleaning or other method considered to be suitable.
If applying FIRETEX single pack intumescent PFP products please consult Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for details for overcoating guidance
If applying alkyd systems consult Sherwin-Williams for advice on overcoating
These overcoating times refer to achievement of optimum adhesion @ 23°C and will vary with temperature
Surface Preparation
Blast clean to Sa2½ BS EN ISO 8501-1:2007. Average surface profile in the range 50-75 microns
Ensure surfaces to be coated are clean, dry and free from all surface contamination
Manually prepared surfaces should be prepared to a minimum standard of St3 BS EN ISO 8501-1:2007 at the time of coating
Application to such surfaces should be by brush or roller where the mechanical action will aid adhesion
Application Conditions and Overcoating
This material should preferably be applied at temperatures in excess of 0ºC. Relative humidity should not exceed 90% and in these conditions good ventilation is essential
Substrate temperature shall be at least 3ºC above the dew point and always above 0°C
In order to achieve optimum water and chemical resistance, temperature needs to be maintained above 0ºC during curing
If it is desired to overcoat outside the times stated on the data sheet, please seek advice from Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information
Application Equipment
Airless Spray - For dft applications between 75-125µ
The airless spray details given above are intended as a guide only
Details such as fluid hose length and diameter, paint temperature and substrate shape and size all have an effect on the spray tip and operating pressure chosen
However, the operating pressure should be the lowest possible consistent with satisfactory atomisation
As conditions will vary from job to job, it is the applicators’ responsibility to ensure that the equipment in use has been set up to give the best results
For further assistance please contact Rawlins Paints' Technical Support Team on 0113 2455450 (option 2) or send a message to [email protected] for more information
Conventional Spray
Nozzle Size : 1.27mm (50 thou)
Atomising Pressure: 2.8kg/cm² (40 psi)
Fluid Pressure : 0.4kg/cm² (6 psi)
The details of atomising pressure, fluid pressure and nozzle size are given as a guide
It may be found that slight variations of pressure will provide optimum atomisation in some circumstances according to the set up in use
Atomising air pressure depends on the air cap in use and the fluid pressure depends on the length of line and direction of feed i.e. horizontal or vertical
For application by conventional spray, it may be necessary to thin the paint by the addition of up to 10% Cleanser/Thinner No.2
Where thinning has been carried out the wet film thickness must be adjusted accordingly
This product must only be thinned using recommended thinners
The use of alternative thinners, particularly those containing ketones, can severely inhibit the curing properties of the coating
Brush & Roller
The material is suitable for brush application
Application of more than one coat may be necessary to give equivalent dry film thickness of a single spray applied coat
Additional Notes
Drying times, curing times and pot life should be considered as a guide only
Epoxy Coatings - Colour Stability:
Fast-Clad 7220 is not colour stable and significant colour changes will be observed with time
However, this does not affect the performance of the material
Any areas touched-up and repaired with the same colour at a later date may be obvious due to this colour change
When epoxy materials are exposed to ultra-violet light a surface chalking effect will develop
This phenomenon results in loss of gloss and a fine powder coating at the surface which may give rise to colour variation depending on the aspect of the steelwork
This effect in no way detracts from the performance of the system
Epoxy Coatings - Tropical Use
Epoxy paints at the time of mixing should not exceed a temperature of 35°C
At this temperature the pot life will be approximately halved
Use of these products outside of the pot life may result in inferior adhesion properties even if the materials appear fit for application
Thinning the mixed product will not alleviate this problem
The maximum air and substrate temperature for application is 50°C providing conditions allow satisfactory application and film formation
If the air and substrate temperatures exceed 50°C and epoxy coatings are applied under these conditions, paint film defects such as dry spray, bubbling and pinholing etc can occur within the coating
Numerical values quoted for physical data may vary slightly from batch to batch
Health & Safety
Consult Product Safety Data Sheet (see section above) for information on safe storage, handling and application of this product
Product Details
10452-987888
Data sheet
Manufacturer
Sherwin Williams
For Use By
Industrial Use
Interior / Exterior Use
Interior & Exterior
For Use On
Carbon Steel Blast Cleaned Steel
Application Method
Spray Brush Roller
Single, Two or Three Pack
Two-Pack
Pack Size
20L
Mixing Ratio
3:1
Coverage
9m²/L
Recommended Thinner/Cleaner
Sherwin Williams Cleanser/Thinner No.2 Sherwin Williams Cleanser/Thinner No.9 Sherwin Williams Cleanser/Thinner No.13
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.
Sherwin-Williams Fast Clad 7220 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
*All estimates are based on theoretical consumption rates for a single coat and do not take into account any substrate deviations or wastage
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