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Suitable for roof pitches over 20°. Lower pitches would need extended overlaps fitted with insect mesh, ‘hole punched’ front plate can be done if wanted.
Suitable for roof pitches over 20°. Lower pitches would need extended overlaps fitted with insect mesh, ‘hole punched’ front plate can be done if wanted.
The physical properties of cast iron are sustained throughout its working life, so with proper maintenance we'd expect our gutters and pipes to last over 100 years under normal conditions.
Our hopper heads are available with a wide range of pipe connections to suit round, square, and rectangular downpipes. The Calnethorpe No.11 accepts round 65mm, 75mm, and 100mm; square 75×75mm, 100×100mm, and 125×125mm; and rectangular 100×75mm, 125×100mm, and 150×100mm. Connection options vary by model — please contact us to confirm availability for your chosen hopper.
LCC is traditional cast iron socket-and-spigot soil pipe made to BS 416-1:1990. Each length has a socket at one end and a spigot at the other, and joints are packed with caulking cord and finished with a jointing sealant. It is supplied with a black bitumen coating and is the like-for-like choice for external soil stacks on Victorian and Edwardian buildings. See the Traditional LCC range.
Our cast iron airbricks are supplied in primed finish, ready for on-site painting. This allows them to be finished to match the existing ironwork or masonry colour of the building. Standard black gloss is the most common finish for conservation and heritage projects.
BTU stand’s for British Thermal Units. This was the old (Imperial) measurement for heat in connection with plumbing. Although BTU’s is a term still commonly used within the heating and plumbing, the industry is now going over to KW’s Kilowatts.
The Antique Black finish is cast iron with a blackened surface — the most historically accurate finish for cast iron ironwork and the most appropriate for the majority of heritage applications. Polished Lacquered is cast iron with a bright polished surface sealed with clear lacquer, suited to interiors and sheltered locations where polished ironwork is the specification. Polished Brass is solid polished brass throughout — the correct choice where existing building fittings are in brass or where a warm metal tone is required.
Available in two sizes: 225mm x 82mm (single airbrick course height) and 225mm x 150mm (double course height). Both sizes fit standard brick coursing positions and install flush into the wall face.
Our standard spike or sturt length is 300mm (12″). Other sizes are available upon request.
This opener is particularly well suited to period and heritage properties — Georgian and Victorian terraces, conservation area houses, traditional orangeries, and listed buildings where a brass finish is required to complement existing ironmongery. It is compatible with Lumen Rooflights and most timber-framed skylights.
Yes. Cast iron is the original material for external soil stacks on most period buildings, and like-for-like replacement in cast iron is usually what conservation officers expect. Check with your local planning authority whether listed building consent is needed for the works.
