Flexi-Line is the premium gutter lining system.Telephone:0800 12 44 846Email:info@flexi-line.co.ukOnline:www.flexi-line.co.ukThe Flexi-line system utilises, and is fully endorsed by Sarnafil . Sarnafil is the only membrane that carries an independent BBA recognition of a 40 year life expectancy.The gutter joints are made by hot-air welding the PVC membrane over a mechanical joint in the galvanised steel substrate. The membrane is 1.2mm thick as standard, and is resistant to normal pollutants and marine atmospheres. As Flexi-line is fully weathered by Sarnafil G410-12EL PVC membrane, It will not support mould or vegetation growth.