Our (Angus Council) new build housing development requires for Building Warrant (Scottish Regulations 2017) purposes a fire retardant clear coating to be be applied to installed new timber rain screen cladding to external walls. the cladding has a coloured paint pre-finish. The application should provide at lease a medium fire resistance duration. Can you please recommend a suitable solution /specification and certification information.
Unfortunately we couldn't offer anything in clear to go over a previously painted surface but assuming a UK Class 1/0 level of protection is suitable then we'd recommend Thermoguard Timbercoat BS Class 1/0 & EN Class B System for a coloured paint system.