Aluminium soakers - for use when forming a pitched roof against an existing wall. Available in three sizes and can be bent to your specification on request. 150mm x 100mm x 50 / 75mm - For use with plain tiles 280mm x 100mm x 50 / 75mm - For use with 500 x 250 slates 330mm x 100mm x 50 / 75mm - For use with 600 x 300 slates Aluminium soakers are a cost effective and lightweight alternative to lead.