Application guides

by Fakolith Chemical Systems

Painting floors and pavements in the food industry and health sectors with certified epoxy foodgrade paint for direct and indirect contact with food and beverages

Description of the problem

The application of Fakolith epoxy foodgrade paints suitable for direct and indirect food contact, on floors and pavements is becoming more and more demanded by industry, food certification bodies, health inspection, etc. Epoxy paint, even with its limitations, is usually the most common type of paint for finishing floors, pavements and multilayer floors. Thanks to the high-performance epoxy paints FK-45 FoodGrade (BPA Compliant) and FK-45 FoodGrade Hygienic (BPA free), a food certification guarantee for direct and indirect contact with food is available. Both incorporate antibacterial BioFilmStop action, for greater hygiene and food safety. We recommend consulting our "Application Guide for high solids epoxies" before starting work with these paints. 

Summary of the most common basic solution and procedure

The ideal pre-treatment to ensure maximum adhesion to thebasewould be shot blastingor milling, and dust aspiration overtheexisting surface.If this preparation of the base is not feasible, and without considering possible major repairs,at least we recommend proceeding as follows:


1. SURFACE CLEANING:   


· Option A - FAKOLITH FK-111: Application of the descaler and grease cleaner, pollution, industrial dirt and biofilm matrix, and subsequent rinsing with water, to remove dirt. After drying, leave the base ready for the next treatment.   


 


· Option B - FAKOLITH FK-12: Application of moisture damage cleaner, such as mold, saltpeter, biofilm, and subsequent rinsing with water to eliminate damage and, after drying, the base is ready for the next treatment. 


2. SURFACE PAINTING:   


Finalpaintingwith3hands(minimum)oftheFoodGradeintelligentepoxypaint suitable for food industry in direct and indirect contact with food and in healthsectors, waterproof,highphysicochemicalresistanceto cleaning and disinfection, and with CE marking tests.Take into account that more than 10ºC are needed for drying.At least at the first coat and depending on the application conditions, for FK-45 FoodGrade paints range werecommend dilutingup to 10% with FK-45 OEMSolvent FG, food-grade solvent, to ensure betterwetting andleveling.Also,for a non-slip finish, itmustbeadded FAKOLITH SLIP STOP at the last hand of the FK-45 FoodGrade range.  


· Option A - FAKOLITH FK-45 FOODGRADE: the use of this high solids foodgrade epoxy paint is usually the most common option. 


· Option B - FAKOLITH FK-45 FOODGRADE HYGIENIC: This version is also recommended, which has greater physicochemical resistance

Application process

1.- Option A - FK-111

DESCRIPTION AND MAIN USE: FAKOLITH FK-111 is a detergent cleaner for use with grease-based dirt or grime, pollution, biofilms matrix, scorching or industrial grime in general, on surfaces resistant to alkaline solutions. Mainly for use in the food industry, industry in general, construction and civil engineering. Health Register FAKOLITH RGSEAA ES-39.005259/T y ROESP E-0043-E.

RECOMMENDED THINNER: 1 part FK-111 to 4 parts water. Can also be used undiluted if necessary, in more contaminated areas or when speed of action is required.

HOW TO APPLY: Carefully protect all surfaces that are not to be treated from splashing. Apply diluted FK-111 using spray guns, brushes or rollers and immediately activate the product by scrubbing with a brush with stiff plastic bristles, working particularly on the worst affected areas. Allow 15-20 minutes to pass, although always before it has dried, and then wash off and rinse thoroughly using water under pressure. If so required the operation can be repeated. Leave to dry before going ahead with possible additional treatments. For further details consult the specifications sheet and/or application guidelines, along with the safety sheet.

AVERAGE YIELD: Undiluted FK-111 provides a yield of approx. 8-12 litres/m², although depending on the extent of the contamination this may vary considerably.

1.- Option B - FK-12

DESCRIPTION AND MAIN USE: FAKOLITH FK-12 is a detergent cleaner for use on damages, mainly water related, such as hygroscopic salts, mould and microorganisms, or dirt and grime in general, up to a medium level on surfaces resistant to acidic solutions. Mainly for use in the food industry, industry in general, construction and civil engineering. Health Register FAKOLITH RGSEAA ES-39.005259/T y ROESP E-0043-E.

RECOMMENDED THINNER: 1 part FK-12 to 4 parts water. Can also be used undiluted if necessary, in more contaminated areas or when speed of action is required.

HOW TO APPLY: Carefully protect all surfaces that are not to be treated from splashing. Apply diluted FK-12 using spray guns, brushes or rollers and immediately activate the product by scrubbing with a brush with stiff plastic bristles, working particularly on the worst affected areas. Allow 5-15-20 minutes to pass, although always before it has dried, and then wash off and rinse thoroughly using water under pressure. If so required the operation can be repeated. Leave to dry before going ahead with possible additional treatments. For further details consult the specifications sheet and/or application guidelines, along with the safety sheet.

AVERAGE YIELD: Undiluted FK-12 provides a yield of approx. 8-12 litre/m², although depending on the extent of the contamination this may vary considerably.

2.- Option A - FK-45 FoodGrade

DESCRIPTION: FAKOLITH FK-45 FoodGrade is a high-performance, two-component, modified epoxy FoodGrade paint with a high solids content, low voc, low odour and EC marking. FK-45 FoodGrade is a FoodGrade epoxy paint that ensures limitation of migrations, generates a high-gloss impermeable film that is easy to clean and disinfect, with water at temperatures of up to 90ºC. The excellent covering and vapour barrier effect qualities of this paint ensure that it will function as an excellent waterproofing agent and long term anticorrosion treatment, when applied to metals in combination with a correct anticorrosion primer system. Compatible with most of primed surfaces, the duly primed metallic surfaces, lacquer-finish sandwich panels and compatible previous paints and/or primers with good adherence and resistant to cross-cut test Class 0-1 UNE-DIN EN ISO 2409:2007. FK-45 FoodGrade is highly resistant to abrasion UNE EN ISO 5470-1:1999 and highly resistant to aggressive chemical attacks UNE EN 1504-2:2005 (chemicals compatible for epoxy), with UNE Shore hardness of 80±5 units, Shore D EN ISO 868:2003 (23±2ºC; 50±5%Hr), covering Class 1 (300 µm dry film) and damp rubbing Class 1, DIN EN 13300. Paint resistant to the most disinfectant cleaners according to Tests DIN EN ISO 4628-2: 2004-01 by TÜV SÜD Germany and/or Fakolith R&D+i (For more security, before use, ask your case to our Tech. Department).

FOOD GRADE PAINT CERTIFIED AS APT FOR DIRECT CONTACT: FK-45 FoodGrade epoxy paint duly complies with all current European regulations regarding materials that come into contact with foods, (EC) Regulation 852/2004, (EC) Regulation 1935/2004, (EC) HACCP Regulation 1895/2005, and (EC) GMP Regulation 2023/2006, as well as Spanish RD 847/2011 and (EU) Commission Regulation No.10/2011, and lasts amendments EU 2018/213 (BPA Compliant), regarding plastic objects and materials designed to come into contact with foods. To this end FK-45 FoodGrade Hygienic has been tested with simulants A, B, C (OM2-40ºC) and D2 (OM2, 20ºC), as shown in the trials run by Fakolith, through independent certificating entities such as Tecnalia and the CNTA (Spanish National Food Technology Centre), among others, insofar as there is compliance in all of the tested cases with the overall and specific migration limits imposed by the Regulation for the above-mentioned simulants, which are equivalent to all of the simulants and, as a result are apt for direct contact with all foods and drinks (with the exception of vinegar, which damages epoxy resin. Not suitable for foods intended for infants or young children according definitions at regulation (EU) No. 609/2013.). FK-45 FoodGrade has Declaration of Compliance – Health Register FAKOLITH RGSEAA ES-39.005259/T. Available in transparent and the most standard industrial colours for the food industry and the health sector.

RECOMMENDED USE: FK-45 FoodGrade epoxy paint is specifically formulated for the protection and finishing of surfaces that come into direct contact with all manner of foods and drinks, in line with current European regulations, and is for application to the interiors of food tanks and silos, food transport elements, skirting boards, floors, walls, ceilings, objects, machinery, installations, structures, etc. located in interiors. Generally, for use in the food industry, the health sector, the pharmaceuticals and cosmetics industry, construction and civil engineering.

HOW TO APPLY: Following adequate preparation of the surface and having confirmed the suitability of the environment, FK-45 FoodGrade paint can be applied by brush or roller, or for finishes and optimum applications using AirMix or Airlles with heated hose type spraying equipment. Slowly pour component A into component B (never the other way round), mix together gently using an electric mixer, for at least 2 minutes or until the components have blended completely together, and then leave to rest for 1 minute before starting to apply. When mixing always use complete batches of component A and component B, to avoid errors in the mixing ratio. Plan carefully its application, bearing in mind its short pot-life of the mix. It can be applied over fibreglass netting systems, in tanks and on floors, mixed with non-slip quartz sand. Should it be necessary adjust the viscosity of the paint by thinning with 5-10% of special FoodGrade solvent, FK-45 Solvent OEM FG.

ATTENTION TO THE CONDITIONS OF APPLICATION AND CURING: Drying time and the waiting time for the second coat depend on layer thickness, temperature, relative humidity and ventilation. The environment and base temperature should never be lower than + 10ºC and higher than 35ºC, and the relative humidity should not be higher than 70-75%. The surface temperature of the base to be painted should always be at least 3 ° C above the dew point to avoid condensation. It is estimated that the ideal application temperature is around 20ºC and 60% relative humidity. In the event that environmental conditions are not appropriate for its application and curing, these should be adapted with extraction and ventilation of air, either at room temperature, with cold or heat, with dehumidifiers, etc., until the environmental conditions are adequate and stable during the application and curing, and always avoiding the generation of moisture condensation, since this would prevent the proper curing of the paint, especially made to monitor in tanks and confined spaces. Epoxy paint should not be in contact with water or surface condensation during the first 72 hours of curing, or the paint may not cure properly, appearing "Amine Blush" wash spots.

DEPOSITS OF FOOD LIQUIDS: In general, the film will present its complete curing, from 14 to 28 days for contact with food and drinks (cured at 23ºC, 50% relative humidity, layer> 300 microns dry). At a lower temperature and / or higher humidity and layer, the curing time can be significantly increased. On the other hand, if the temperature conditions are higher, the humidity is lower and / or there is less coating, the curing time can be significantly reduced. It is necessary to maintain suitable environmental conditions during application and curing, for which it is necessary to use ventilation systems with air extraction and forced hot air, preferably dehydrated, avoiding condensation, to maximize the curing conditions. Before filling a tank that has been coated with FK-45 FoodGrade paints range, the complete curing of the film should be checked, as well as at least an initial cleaning on the entire surface, with clear water, or preferably with neutral soap and later rinse.

FORCED DRYING: in general, applications with forced drying with hot air dehydrated can greatly reduce the drying, curing and commissioning time. An example of this can be the application in interior of pipes, where specialist companies after the application with systems and special equipment, artificially circulate a current of hot dehydrated air, and after checking the correct curing, make a later washing with water, before of the definitive commissioning. The contribution of heat at a higher temperature shortens the programming of the curing cycle. For more details, consult technical data sheet and / or application guides, and safety data sheet.

OTHER GENERAL APPLICATIONS: the painting offers good general resistance, at least after 72 hours of curing, although we recommend not exposing the paint film to severe chemical-physical aggressions until it has been cured for at least 1 week (walls, floors, ceilings, indirect contact).

AVERAGE YIELD PAINT: according to recommended coat thickness, depending on use of FK-45 FoodGrade

- Dry thickness 200 µm = wet 302 gr/m² (222 ml/m²) - yield 3,31 m²/kg (4,5 m²/L).
- Dry thickness 300 µm = wet 453 gr/m² (333 ml/m²)- yield of 2,21 m²/kg (3,00 m²/L).
- Dry thickness 350µm = wet 528 gr/m² (389 ml/m²)- yield of 1,90 m²/kg (2,57 m²/L).
- Dry thickness 400 µm = wet 604 gr/m² (444 ml/m²)- yield of 1,66 m²/kg (2,25 m²/L).
- Dry thickness 500 µm = wet 755 gr/m² (555 ml/m²)- yield of 1,32 m²/kg (1,80 m²/L).
- Dry thickness 700µm = wet 1058 gr/m² (778 ml/m²)- yield of 0,95 m²/kg (1,28 m²/L).

AVERAGE YIELD TRANSPARENT VARNISH:

- Dry thickness 50 µm = wet 58 gr/m² (53 ml/m²)- yield of 17,27 m²/kg (18,87 m²/L).
- Dry thickness 75 µm = wet 87 gr/m² (79 ml/m²)- yield of 11,49 m²/kg (12,66 m²/L).
- Dry thickness 100 µm = wet 116 gr/m² (105 ml/m²)- yield of 8,63 m²/kg (9,52 m²/L).

2.- Option B - FK-45 FoodGrade Hygienic

DESCRIPTION: FAKOLITH FK-45 Foodgrade Hygienic is a heavy duty two-component modified epoxy FoodGrade paint with a high solids content, low voc, low odour and CE marking, with a higher level of physicochemical resistance and performance than FK-45 FoodGrade. FK-45 FoodGrade Hygienic is a FoodGrade epoxy paint that ensures limitation of toxic migrations, generates a high-gloss impermeable film that is easy to clean and disinfect, with water at temperatures of up to 90ºC. The excellent covering and vapour barrier effect qualities of this paint ensure that it will function as an excellent waterproofing agent and long term anticorrosion treatment, when applied to metals in combination with a correct anticorrosion primer system. Compatible with most duly primed mineral and metallic surfaces, lacquer-finish sandwich panels and previous, well adhered coats of compatible paints and/or primers, resistant to cross-cut test Class 0-1 UNE-DIN EN ISO 2409:2007. FK-45 FoodGrade Hygienic is highly resistant to abrasion UNE EN ISO 5470-1:1999 and extremely resistant to aggressive chemical attacks UNE EN 1504-2:2005 (chemicals compatible for epoxy), with a UNE Shore hardness of 80±5 units, Shore D EN ISO 868:2003 (23±2ºC; 50±5%Hr), covering Class 1 (300 µm dry film) and damp rubbing Class 1, DIN EN 13300. Paint resistant to the most disinfectant cleaners according to Tests DIN EN ISO 4628-2: 2004-01 by TÜV SÜD Germany and/or Fakolith R&D+i (For more security, before use, ask your case to our Tech. Department).

FOOD GRADE PAINT CERTIFIED FOR DIRECT CONTACT: FK-45 FoodGrade Hygienic epoxy paint duly complies with all current European regulations regarding materials that come into contact with foods, (EC) Regulation 852/2004, (EC) Regulation 1935/2004, HACCP, Regulation 1895/2005 (use as heavy duty coating), and (EC) GMP Regulation 2023/2006, as well as Spanish RD 847/2011 and (EU) Commission Regulation No. 10/2011, along with last amendment EU 2018/213 regarding plastic objects and materials designed to come into contact with foods. To this end FK-45 FoodGrade Hygienic has been tested with simulants A, B, C (OM2-40ºC) and D2 (OM2, 20ºC), as shown in the trials run by Fakolith, through independent certificating entities such as Tecnalia and the CNTA (Spanish National Food Technology Centre), among others, insofar as there is compliance in all of the tested cases with the overall and specific migration limits imposed by the Regulation for the above-mentioned simulants, which are equivalent to all of the simulants and, as a result are apt for direct contact with all foods and drinks (with the exception of vinegar, which damages epoxy resin). FK-45 FoodGrade Hygienic has Compliance Declaration – Sanitary Registration FAKOLITH RGSEAA ES-39.005259/T. Available in the most standard industrial colours for the food industry and the health sector.

BPA-FREE TECHNOLOGY: As an added value, FK-45 Foodgrade Hygienic has been developed with BPA-free technology resins, and is also free of Bisphenol A.

BIOFILMSTOP SANITARY TECHNOLOGY (Treated Article BPR Art.3): FK-45 Foodgrade Hygienic is a FoodGrade paint that reconciles FoodGrade Technology and Sanitary BioFilmStop Inhibition Technology, highly resistant to biofilm bacteria and mould, ISO 22196:2011 (Escherichia coli, Listeria monocytogenes, Bacillus subtillis, Pseudonomas aeruginosa, Staphylococcus aureus, Salmonella enteritidis, Legionella pneumophila...) and, moreover, notably improving HACCP, food safety and asepsis for the user company, while combining Fakolith’s innovative FOODTECH film protection technology, based on food preservatives.

RECOMMENDED USE: FK-45 FoodGrade Hygienic epoxy paint is specifically formulated for the protection and finishing of surfaces that come into direct or indirect contact with nearly all manner of foods and drinks, in line with current European regulations, and is for application to the insides of food tanks and silos >10.000 l., food transport elements, skirting boards, floors, walls, ceilings, objects, machinery, installations, structures, etc. located in interiors. Generally, for use in the food industry, the health sector, the pharmaceuticals and cosmetics industry, construction and civil engineering.

HOW TO APPLY: Following adequate preparation of the surface and having confirmed the suitability of the environment, FK-45 FoodGrade Hygienic paint can be applied by brush or roller, or for finishes and optimum applications use AirMix or Airless with heated Hose. Slowly pour component A into component B (never the other way round), mix together gently using an electric mixer, for at least 2 minutes or until the components have blended completely together, and then leave to rest for 1 minute before starting to apply. When mixing always use complete batches of component A and component B, to avoid errors in the mixing ratio. Plan carefully its application, bearing in mind its short pot-life of the mix. It can be applied over fibreglass netting systems, in tanks and on floors, mixed with non-slip quartz sand. Should it be necessary adjust the viscosity of the paint by thinning with 5-10% of special FoodGrade solvent, FK-45 Solvent OEM FG.

ATTENTION TO THE CONDITIONS OF APPLICATION AND CURING: Drying time and the waiting time for the second coat depend on layer thickness, temperature, relative humidity and ventilation. The environment and base temperature should never be lower than + 10ºC and higher than 35ºC, and the relative humidity should not be higher than 70-75%. The surface temperature of the base to be painted should always be at least 3 ° C above the dew point to avoid condensation. It is estimated that the ideal application temperature is around 20ºC and 60% relative humidity. In the event that environmental conditions are not appropriate for its application and curing, these should be adapted with extraction and ventilation of air, either at room temperature, with cold or heat, with dehumidifiers, etc., until the environmental conditions are adequate and stable during the application and curing, and always avoiding the generation of moisture condensation, since this would prevent the proper curing of the paint, especially made to monitor in tanks and confined spaces. Epoxy paint should not be in contact with water or surface condensation during the first 72 hours of curing, or the paint may not cure properly, appearing "Amine Blush" wash spots.

DEPOSITS OF FOOD LIQUIDS >10.000 l.: In general, the film will present its complete curing, from 7 to 14 days for contact with food and drinks (cured at 23ºC, 50% relative humidity, layer> 300 microns dry). At a lower temperature and / or higher humidity and layer, the curing time can be significantly increased. On the other hand, if the temperature conditions are higher, the humidity is lower and / or there is less coating, the curing time can be significantly reduced. It is necessary to maintain suitable environmental conditions during application and curing, for which it is necessary to use ventilation systems with air extraction and hot air, preferably dehydrated, avoiding condensation, to maximize the curing conditions. Before filling a tank that has been coated with FK-45 FoodGrade paints range, the complete curing of the film should be checked, as well as at least an initial cleaning on the entire surface, with clear water, or preferably with neutral soap and later rinse. For tanks <10.000 l. use the paint FK-45 FoodGrade.

OTHER GENERAL APPLICATIONS: the painting offers good general resistance, at least after 72 hours of curing, although we recommend not exposing the paint film to severe chemical-physical aggressions until it has been cured for at least 1 week (walls, floors, ceilings, indirect contact).

FORCED DRYING: in general, applications with forced drying with hot air dehydrated can greatly reduce the drying, curing and commissioning time. An example of this can be the application in interior of pipes, where specialist companies after the application with systems and special equipment, artificially circulate a current of hot dehydrated air, and after checking the correct curing, make a later washing with water, before of the definitive commissioning. The contribution of heat at a higher temperature shortens the programming of the curing cycle. For more details, consult technical data sheet and / or application guides, and safety data sheet.

AVERAGE YIELD: according to recommended coat thickness, depending on use of FK-45 FoodGrade Hygienic

- Dry thickness 200 µm = wet 285 gr/m² (211 ml/m²) - yield 3,51 m²/kg (4,74 m²/L).
- Dry thickness 300 µm = wet 427 gr/m² (316 ml/m²)- yield of 2,34 m²/kg (3,16 m²/L).
- Dry thickness 350 µm = wet 497 gr/m² (368 ml/m²)- yield of 2,01 m²/kg (2,70 m²/L).
- Dry thickness 400 µm = wet 568 gr/m² (421ml/m²)- yield of 1,76 m²/kg (2,38 m²/L).
- Dry thickness 500 µm = wet 710 gr/m² (526 ml/m²)- yield of 1,41 m²/kg (1,90 m²/L).
- Dry thickness 700 µm = wet 995 gr/m² (737 ml/m²)- yield of 1,00 m²/kg (1,36 m²/L).

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Flooring FoodGrade paint



Surface preparation



First coat



Air remover roller



Smooth finish



Anti-sliping finish



Wide foodgrade color card



Most used colors