Frost Drainage is now part of Drainfast Ltd. Frost Drainage has been established for over 40 years manufacturing a range of f ... loor drains, roof drains, balcony outlets and biomatic grease separator products in cast iron, nickel bronze and stainless steel. As a consultative Manufacturer and Supplier, we guarantee supply efficiency to anywhere in the UK and Ireland, we have the technical expertise required offering full support to the construction industry. read more