Cast Iron Gutters & Downpipes

At Roundtower Lime, we proudly supply a premium range of Cast Iron Gutters and Downpipes – the benchmark choice for traditional buildings, period restorations, and conservation projects across Ireland. Cast iron remains the most authentic rainwater system for heritage properties, offering unparalleled durability, historic accuracy, and aesthetic integrity.

Whether you're restoring a Georgian townhouse, preserving a protected structure, or replicating a vernacular cottage roofline, our cast iron rainwater systems deliver long-term performance while meeting the strict requirements of conservation authorities.

Why Choose Cast Iron Rainwater Systems from Roundtower Lime?

Heritage-Approved: Ideal for listed buildings and conservation zones; preferred by architects and conservation officers.
Authentic Detailing: Matches original cast iron profiles used for centuries in Ireland and the UK.
Unrivalled Longevity: When correctly installed and maintained, cast iron systems can last 100+ years.
Minimal Noise: Cast iron absorbs rain impact noise far better than plastic or metal alternatives.
Sustainable: Made from 100% recyclable material with a low environmental impact.
Wide Range of Profiles:
- Half Round
- Beaded Half Round
- Deepflow
- Ogee (Victorian)
- Box Gutter Profiles
- Round or Rectangular Downpipes
Primed or Factory-Painted Finishes: Available in a traditional black or pre-painted with durable coatings.

Perfect for Period Properties & Historic Restorations

Our cast iron systems are used extensively in the restoration of protected buildings, churches, public buildings, and conservation projects. Their weight, rigidity, and visual detail ensure they replicate the exact appearance of original 19th and early 20th-century systems, while exceeding modern performance expectations.

Frequently Asked Questions (FAQs)

Is cast iron still a good choice for guttering today?

Yes. Cast iron is incredibly durable and is still the first choice for traditional and conservation-sensitive projects. It outperforms plastic and most metals in lifespan and acoustic performance.

Are your cast iron products suitable for listed or heritage buildings?

Absolutely. All our profiles and finishes are designed to meet conservation standards and match historic specifications.

How long does cast iron guttering last?

When installed correctly and maintained (repainting every 10–15 years), cast iron guttering can easily exceed 100 years in service life.

Do cast iron gutters need a lot of maintenance?

Not particularly. Like any exterior element, periodic cleaning of debris and checking joints is advisable. Repainting every decade will preserve their appearance and corrosion resistance.

What finishes are available?

We supply cast iron gutters and downpipes primed (ready for painting) or pre-painted in traditional black. Other RAL colours may be available by special order.