At John A. Stephens, we offer a wide range of Specialist Services, including: From your plans, we can determine the exact quantity of building materials needed, using our computerised calculation software, thus eliminating any guesswork when quantifying. Skip hire. Readymixed Concrete. Comprehensive brick library for brick matching. Cutting and bonding services for brick, block, concrete and slabs. Manufacture of concrete products and reconstructed artificial stone for new build or to match existing. Large stock of reclaimed materials. Computerised Paint Mixing, with up to 10,000 colours available for exact colour selection and matching.