Chemical resistant coatings

Chemical resistant coatings being applied on a machine part

Chemical resistant coatings for maximum surface protection

Chemical resistant coating is a protective layer which makes the surface immune to  aggressive chemicals. It is ideal for wall or flooring system, in areas where there is chemical exposure of various degrees. However, chemical resistant coatings are also suitable for objects such as machine parts and other components which may come in touch with harmful chemicals such as solvents, oils and hydraulic fluids.

Without appropriate protective coating, the substrate may absorb chemicals which deteriorate the surface or even contaminate the product, soil or environment. Therefore, it is crucial to apply the right kinds of chemical resistant coatings where need be.

Chemical resistant coatings are used for example in:

  • Laboratories: on equipment, worktops, floors etc. to protect from chemical spills
  • Tanks and containers: to protect the inner surfaces from the cargo

The 5 factors to guarantee successful chemical resistant coat

The type of chemical is one of the factors that determine the best chemical resistant paint for the surface.

Type of chemical is one of the factors that determine the best chemical resistant paint for the surface.

One doesn’t fit all when it comes to chemical resistant coatings; to start your look for the optimal solution; you should consider the following five factors.

  • The chemical substance the substrate will be exposed to
  • Concentration of the substance
  • Temperature (environment and substance)
  • Degree of exposure (full/partial immersion, occasional contact etc.)
  • Duration of exposure

Next to chemical resistance

The five factors help you define what kind of a coating you can use to prevent surface damage by chemicals. However, you should also consider the purpose of the substrate, and whether it might require other properties.

For example a floor or ramp might require high abrasion resistance, and machinery parts must be guaranteed sufficient lubrication. Let’s take a look at the different types of chemical resistant coatings.

Chemical resistant coating solutions available in the UK

Chemical resistant coatings exist as one and two part systems. The two component reactive systems offer the best protection from a wide range of chemicals, whereas the one pot systems are, in general, less resistant. However, the exception proves the rule; polyurethane coatings are available also as single part systems, yet they form a very chemical resistant coat.

In the table you will find Britain’s most common chemical resistant solutions.

CoatingChemical resistanceTemperatureSubstratesExample areas
EpoxyCaustic fluids, fats, oils, general fuels, lubricants, salt- and sugar solutions and detergentsWeakened chemical resistance in high and fluctuating temperaturesSteel, other metals and concrete and wood*Floors in factories and the food industry
Epoxy NovolacMost chemicals (extreme resistance)High level of thermal stabilitySteel, other metals and concreteTank linings, pipes and chemical storage
PolyurethaneOrganic caustic fluids and alkali, fuel and hydraulic oils, and aromatic and aliphatic solventsResistance also in high temperaturesSteel, other metals, concrete and wood*Industrial floors
MethacrylateAqueous solutions; not resistant to solvents of any kindSuitable for low temperatures; cold areasSteel and concreteCold storage rooms and freezers
Vinyl EstersCaustic fluids, alkali and almost any solventSusceptible resistance in high temperaturesSteel and concreteCargo tank linings

*Wood can be made chemical resistant, however, the coatings often require complex surface preparation prior to application.

The best chemical resistant coating for your project

Here we will lead you towards the best chemical resistant solution for your project by introducing the available solutions and different substrates as well as suggesting some products for different applications. We additionally offer tailored advice for every project; all you need to do is share your project with us!

Sometimes a full chemical resistance is not needed or extreme protection from certain caustic fluid is required, then for example, acid resistant coatings may be applicable.

Industrial chemical resistant paint for metal objects and surfaces

The most common material that requires protection from chemicals is steel alongside with other metals. The chemical resistant coatings for steel are suitable in the following two cases:

  • Steel surfaces such as ramps, bridges and cargo tanks
  • Metal structures and objects such as machine components and equipment

Sometimes steel must be chemical resistant due to the fact that the substrate is subject to oils, solvents and other chemicals which might harm the surface or hinder the performance of the components.

Chemical resistant coatings for steel and metals in the UK

Coating TypeBrandProductPrice (RRP)Coverage
2K epoxyInternationalIntergard 410; a corrosion and chemical resistant coating for harsh environments (offshore)£17.80 per L4.8 sq m per L
2K epoxy Sika Permacor 2707; a topcoat resistant to aqueous and alkaline exposure for metal surfaces in harsh interior environments.£21.20 per Kg9 sq m per Kg
2K vinyl esterInternational Interline 955; a heavy duty chemical resistant coating for steelwork. Ideal as tank lining there where harsh chemicals or hot hot media are stored.£43.00 per L2.1 sq m per L
2K polyurethaneJotunHardtop AS; an aliphatic acrylic PU topcoat for marine and offshore metal surfaces.£12.00 per L10 sq m per L

Make concrete floors and walls immune to chemicals

Chemical resistant coating protects factory floors from chemical spills

Chemical resistant coating protects factory floors from chemical spills

Also concrete walls and floors may require chemical resistance especially in environments where chemicals are being processed, where they are used for thorough cleaning or where they ore otherwise present; for example in garages where vehicles may leak corrosive fluids.

Next to chemical processing and manufacture, the food processing and catering sectors often require chemical resistant coatings on walls and floors; maintaining strictly controlled hygiene in these industries often requires aggressive chemicals. Chemical resistant concrete wall and floor paint thus, increases the surface durability and helps maintain hygiene.

The most common chemical resistant coating for concrete is an epoxy coating.

Epoxy solutions exist in many forms, and they can have other properties such as resistance to abrasion and heavy loads as well as anti slip texture. However, when the surface requires extremely high resistance to caustic fluids, a polyurethane paint layer on the epoxy is advisable.

Chemical resistant coatings for concrete floors and walls

2K PolyurethaneRust-OleumRust-O-Thane Polyurethane; a flexible, glossy topcoat for coated walls and floors; resistant to harsh chemicals, cleaning and humidity.£38.00 per L13.2 sq m per L
2K PolyurethaneBlackfriar Progessional High Traffic Floor Paint; a non-yellowing, chemical resistant floor coating for industrial and commercial concrete floors.£18.00 per L12 sq m per L
2K EpoxyJotun Jotafloor Coating; a solvent free chemical resistant epoxy floor coating for garages, dairies, factories etc.£14.10 per L3.3 sq m per L
2K Epoxy Watco Chemi-Coat Rapid; a fast curing chemical resistant floor coating. £50.50 per L
2K EpoxyWatcoHygienic Wall Coating; protective and hygienic chemical resistant wall coating. £41.60 per L
AcrylicSikaSikagard 405 W; an industrial wall coating resistant to mild cleaning chemicals£20.80 per L5.8 sq m per L

Tip: requesting a custom quote often delivers better pricing for large industrial projects.

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