Profile: A W Lumb & Co., Ltd. specializes in offering aggregates, bricks & blocks, drainage, insulation, plaster & landscaping products, and lintels. Our decorative products include blue slate, golden gravel and Canterbury spar in 25 Kg & bulk sizes. We supply drainage for use above and below ground. We can supply castings, inspection chambers, channel & land-drain, ducting, septic tanks, and specialized systems such as SUDS (Specialized Urban Drainage Systems).