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Established 1893   |   BS 460:2002 Certified   |   UK & International Supply   |   Expert Technical Support   |   0333 987 4452

Shop / Cast Iron Gutters & Pipes / Cast Iron Round Downpipes / Cast Iron Round Downpipe Offset – 305mm (12″) Projection
Cast Iron Pipe Offset Swan Neck
How to measure the projection of a cast iron round downpipe offset, centre line to centre line
CODE RWOS12 Category Cast Iron Round Downpipes

Cast Iron Round Downpipe Offset – 305mm (12″) Projection

£94.60 – £179.40Price range: £94.60 through £179.40 ex VAT (£113.52 – £215.28 inc VAT)

Our cast iron round rainwater pipe offset 305mm and cast downpipe offset is suited to most period property renovations. Round cast iron pipe is available in primed and black as standard.
Sizes Available:

65mm (2.5″)
75mm (3″)
100mm (4″)

Cast iron round rainwater pipe offset 305mm (12″): R2544, R3044, R4044, XR2544, XR3044, XR4044

Our traditional cast iron rainwater pipe is available in 4 sizes. It is now common to see 2.5″ pipes used in place of the older 2″ sizing.

Measuring the projection: measured horizontally between the centre lines of the upper and lower pipe, not face to face. See the measuring diagram in the gallery, or our guide to measuring an offset for all sizes and a worked example.

Clear

UK delivery from £30. Fittings are despatched boxed. See delivery rates.

Our traditional cast iron rainwater pipe is available in 3 sizes. It is now common to see 2.5″ pipes used in place of the older 2″ sizing.

Cast iron gutters and pipes offer great strength and durability, a proven history of long life, low noise operation and fire resistance. Most old buildings have cast iron rainwater systems that should be maintained and preserved however; these inherent benefits make a cast iron rainwater system an ideal choice for both traditional and modern installations.

Technical

For specific technical sizes on our range of cast iron gutters, rainwater pipes or UK manufactured brackets for cast metal rainwater products.

Additional information

Pipe Size/Finish

Primer 65mm, Primer 75mm, Primer 100mm, Black Painted 65mm, Black Painted 75mm, Black Painted 100mm

FAQ Categories

  • Cast Iron Airbricks
  • Cast Iron Airvents
  • Cast Iron Hopper Heads
  • General
  • Gutter & Pipe Brackets
  • Gutters & Pipes
  • Heating
  • Rooflight Openers
  • Soil Pipes
All FAQ
How do I get a price for a cast iron hopper head?

How do I get a price for a cast iron hopper head?

Select your required size and finish options from the product page and add to cart for an instant price. For project quantities, bespoke requirements, or any specification queries, please call 0333 987 4452 or use the contact form at tuscanfoundry.com.

Is a cast iron hopper head suitable for use on a listed building?

Is a cast iron hopper head suitable for use on a listed building?

Yes. Cast iron hopper heads are the historically correct choice for listed and period buildings, and a like-for-like cast iron replacement is generally accepted without objection by conservation officers. We manufacture to BS 460 for genuine heritage character and durability.

What is the advantage of a louvre-face airbrick over a square-grid pattern?

What is the advantage of a louvre-face airbrick over a square-grid pattern?

The louvre face provides directional airflow and offers some resistance to driven rain entering the subfloor void, making it a practical choice for exposed elevations or properties in areas with significant prevailing wind and rainfall. The square-grid (school board) pattern offers a larger open ventilation area but less weather protection.

What finishes are available on your cast iron hopper heads?

What finishes are available on your cast iron hopper heads?

Hopper heads are supplied in red oxide primer ready for on-site painting, or pre-finished in black. A full range of Heritage Colours in traditional linseed oil paint is also available on request — please contact us for the swatch chart.

What sizes and weights are available for the Ornamental Airbrick?

What sizes and weights are available for the Ornamental Airbrick?

The Ornamental Airbrick (OAB) is available in three sizes: 225mm × 75mm (2.8kg), 225mm × 150mm (4.1kg), and 225mm × 225mm (5.8kg). All sizes have a uniform depth of 75mm, making them consistent to install across a subfloor ventilation course.

How do I get a price for a cast iron hopper head?

How do I get a price for a cast iron hopper head?

Please call 0333 987 4452 or use the contact form with the size, quantity and connection details, and we'll provide a quotation.

We are looking to install a new heating system into a Georgian farmhouse and would like to know whether we would be better installing tubular steel column radiators or traditional cast iron radiators.

We are looking to install a new heating system into a Georgian farmhouse and would like to know whether we would be better installing tubular steel column radiators or traditional cast iron radiators.

Cast iron radiators cost no more to run than modern steel or aluminium radiators. Cast iron is a very efficient material at emitting heat, thus you have items like le creuset cast iron pans. Cast iron holds it’s heat extremly well, which means that the radiators stay warm for longer.

What paint finish should I use on cast iron guttering?

What paint finish should I use on cast iron guttering?

Linseed oil paint is the most appropriate finish for cast iron guttering on listed and historic buildings. It is breathable, flexible, and penetrating — qualities that suit the movement characteristics of cast iron through seasonal temperature changes. Tuscan Foundry Products offers a curated range of heritage linseed oil colours. For modern applications, a high-quality exterior oil-based paint system over a metal primer is also acceptable.

What pipe connection sizes do your cast iron hopper heads accept?

What pipe connection sizes do your cast iron hopper heads accept?

Our cast iron hopper heads are available with 65mm, 75mm and 100mm round outlets, 75mm, 100mm and 125mm square outlets, and 100x75mm, 125x100mm and 150x125mm rectangular outlets, to match the downpipe already on site or specified for the project.

Is a cast iron hopper head suitable for use on a listed building?

Is a cast iron hopper head suitable for use on a listed building?

Yes. Cast iron hopper heads are the historically correct choice for listed and period buildings, and a like-for-like cast iron replacement is generally accepted without objection by conservation officers. We manufacture to BS 460 for genuine heritage character and durability.

Related products

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  • Cast Iron Pipe Offset Swan Neck

    Cast Iron Round Downpipe Offset – 457mm (18″) Projection

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Find out more about our products by giving us a call
0333 987 4452

Tuscan Foundry Products, Tyn-Y-Clyn, Llanafan Fawr, Builth Wells, Powys LD2 3LU, United Kingdom

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