Type C cavity drain for Moortown cellars

BS 8102 in the language of a one-room party-wall cellar

A Street Lane shopkeeper does not need specifier-speak. On a High Moor through-semi or a Moortown Corner stock cellar, BS 8102’s three types collapse to this:

• Type A tries to stop water at the surface of the wall (slurry, bitumen, sheet). Fine on a stable nib. Poor as the only defence when the neighbour’s cellar is wet and a hatch sits in the pavement.
• Type B is waterproof concrete as structure. Nobody poured a Type B box under a 1930s Street Lane parade.
• Type C manages water that arrives. Cavity drain membrane + channel + sump. This matches a small room you still have to walk through with a crate of stock.

We will mention cavity drain membrane because that is the liner. We will mention bs8102 because that is the standard. We will not pretend a one-room utility is a deep new basement.

tanking a cellar on a Street Lane through-semi cellar tanking when the shop already has slurry

Where a sump can discharge on this plot type

Alwoodley’s larger plots sometimes have a rear combined drain under a garden. Moortown often does not. Discharge options the survey actually checks:

• a combined drain in the rear ginnel or under the back scullery of a through-semi — if the invert is low enough for a pumped rising main
• a shop cellar that already dumps to the Street Lane sewer — if Yorkshire Water / the owner’s right to discharge allows a pumped connection
• not a new soakaway under a pavement hatch
• not a pipe across the Ring Road verge
• not an assumed rear lawn

If the invert is too high, Type C still works only if we can find another legal outfall. If we cannot, we say the job is not a Type C job rather than invent a garden that the plot does not have. where a sump can discharge with no rear yard

Cellar waterproofing systems, without the catalogue

Secondary phrases belong here as explanation, not as extra money pages: waterproofing cellar walls, cellar waterproofing systems, basement tanking services, basement tanking membrane. On this domain they all point back to a specified Type C (or an honest short Type A repair) in Moortown. We do not sell membranes by the roll. We do not list forty towns.

A shop cellar may need a maintainable cavity — access panels that a tenant can reach after hours, not a lining buried behind a fitted bar. A through-semi utility may need the channel kept off the neighbour’s brick until the Party Wall notice is in. Those are Moortown detailing notes. They are why the survey exists.