John Newton & Co Ltd is the UK's leading INDEPENDENT manufacturer and distributor of Cavity Drainage Membrane (CDM) and related water control & drainage products used for waterproofing and damp proofing applications in newbuild construction, building renovation & refurbishment projects. For internal below ground or earth retaining applications such as basement waterproofing, cellar waterproofing, lining a tunnel or waterproofing an arch use our BBA Certified Newton System 500 incorporating our Newton Drainage Systems. For above ground applications such as damp proofing a damp wall, gable end, barn conversion or damp proofing timber frame building use BBA certified Newton Newlath 2000. For external waterproofing of earth retaining walls use Newton Geodrain. Newton's Slimline Flooring provides a damp proof and waterproof membrane so damp sensitive flooring finishes such as wooden flooring can be rapidly applied even if the underlying building structure is not dry.