Contact Sherwin-Williams Technical Customer Support Team for details regarding Sherwin-Williams' ISO 12944 third-party laboratory testing programme.

Dry film thicknesses (d.f.t.) quoted are minimum nominal as defined by BS EN ISO 12944-5.

*In principle, corrosion protection is not required for corrosivity category C1. If, for aesthetic reasons, painting is necessary, a system intended for corrosivity category C2 (with a low durability) may be chosen. If unprotected steelwork destined for corrosivity category C1 is initially transported, stored temporarily or assembled in an exposed situation (for example, a C4/C5 coastal environment), corrosion will commence due to air-borne contaminants/salts and will continue even when the steelwork is moved to its final category C1 location. To avoid this problem, the steelwork should either be protected during site storage or given a suitable primer coat. The dry film thickness should be appropriate for the expected storage time and the severity of the storage environment.

Durability should be considered as the coating design life, where regular minor maintenance should be scheduled to achieve the required life to first major maintenance

Definitions of environment corrosive categories stated are according to ISO12944-2:2018.

Applicable to Macropoxy™ 400 where applied without a topcoat: All epoxy coatings will discolour and chalk progressively. Later application (site touch-up) may be noticeable. Macropoxy™ 400 is only available in primer shades.

Acrolon Finishes are available in a full range of shades, for alternative finishes please contact Sherwin-Williams Technical Customer Support

When determining the environmental category the specifier must consider that certain structures and/or locations can produce a micro climate which is more corrosive than that of the surrounding environment. This can be the case with open sided buildings including car parks.

For maintenance and/or alternative substrate specifications, please contact Sherwin-Williams Technical Customer Support Team.

Technical Customer Support team can be contacted by email or phone: Email: technicale@sherwin.com, Phone: 01204 556 457

The information detailed in this specification selector is liable to modification from time to time in the light of experience and of normal product development, and before using, customers are advised to check with Sherwin-Williams, quoting the reference number, to ensure that they possess the latest issue.

This Specification is specifically subject to the disclaimer which can be found at http://protectiveemea.sherwin-williams.com/Home/Disclaimer

October 2019 Issue 5