Summers Lane London N12 0RF Barnet – Summers Lane | NLWAEach north London household can take up to six standard rubble sacks to a recycling centre each month. This includes concrete, brick, stones, pebbles, sand and gravel. A standard rubble sack is 51cm by 76cm (20 inches by 30 inches) or equivalent. Asbestos https://www.nlwa.gov.uk/places-to-recycle/barnet-summers-lane