Concrete Roofing Products Limited (Company No 1142800) was first formed in 1970 as the manufacturing division of a long established family roofing business. The company has traded as Celstone since 2000, when production of roofing stone and slate from a sister company was relocated. Directors of the company are Max Abraham, Jeremy Abraham and David Poole. Jeremy is also a director of the sister company, Max Abraham Roofing Contractors Limited, who specialise in roofing contracts, the supply of new and reclaimed roofing materials and is a member of the National Federation of Roofing Contractors.