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 Buildstore
Complete Rainwater Discharge Solutions for Every Project

Round downpipes are an essential element of any well-designed rainwater system, responsible for directing water safely from roof level to ground drainage. Without a properly specified downpipe, even the highest-quality gutter system cannot perform efficiently.

The Alumasc Apex range is engineered for seamless integration with matching cast iron gutter profiles, outlets, brackets, bends, and connectors. This ensures alignment, structural stability, and consistent flow performance throughout the entire drainage network.

Suitable for residential homes, large-scale commercial developments, educational facilities, and heritage restoration projects, the system delivers dependable vertical water transfer while preserving architectural uniformity. Its robust cast iron construction ensures long-term reliability, reducing the risk of movement, leakage, or weather-related deterioration over time.

Sizes & Product Specifications

The Alumasc Apex Cast Iron Round Downpipe range is available in multiple diameters to meet varying project demands.

3

3" (75mm) Diameter

Ideal for domestic properties and smaller roof areas. In stock for
immediate delivery.

4

4" (100mm) Diameter

Suitable for larger residential or light commercial applications
requiring greater flow capacity. In stock for immediate delivery.

6

6" (150mm) Diameter

Designed for high-capacity drainage on larger buildings. Available on a
3-week lead time.

Factory Primed & RAL Colour Finishes

Factory Primed & RAL Colour Finishes

Supplied in a factory primed finish or available in standard RAL
colours, reducing the need for additional onsite finishing.

Full System Compatibility

Full System Compatibility

We stock bends, offsets, brackets, shoes, and connectors to ensure a
complete and correctly specified installation.

 Buildstore
Buy Alumasc Cast Iron Downpipe with Confidence

When you buy Alumasc cast iron downpipe products from Buildstore, you receive authentic, high-performance components supported by professional expertise. As a trusted Alumasc round cast iron downpipe supplier, we ensure reliable stock sourcing, accurate specifications, and secure nationwide delivery across Ireland.

Our online ordering system simplifies purchasing, allowing contractors and homeowners to secure premium drainage components efficiently.

Why Choose Buildstore?

Choosing the right supplier guarantees correct specification, timely
delivery, and product authenticity. Buildstore supports projects of all sizes
with dependable service and specialist rainwater expertise.

Authorised Rainwater Systems Stockist

Authorised Rainwater Systems Stockist

We supply leading cast iron systems trusted by professionals throughout
Ireland.

Strong Warehouse<br> Availability

Strong Warehouse
Availability

Key sizes are held in stock for immediate dispatch to keep your project
on schedule.

Technical Product <br>Guidance

Technical Product
Guidance

Our experienced team can advise on diameter selection, flow capacity,
and accessory compatibility.

Nationwide Delivery<br> Coverage

Nationwide Delivery
Coverage

We provide efficient shipping across Ireland, including direct site
delivery options.

Frequently Asked Questions

Where can I buy Apex Round Downpipe in Ireland?

You can buy directly from Buildstore online, with nationwide delivery and expert product guidance available for residential and commercial projects.

Why buy Alumasc cast iron downpipe instead of PVC alternatives? +

Buying Alumasc cast iron downpipe ensures superior durability, structural strength, and long-term performance compared to lightweight PVC systems.

Who is a reliable Alumasc round cast iron downpipe supplier? +

Buildstore is a trusted cast iron downpipe supplier, offering genuine products, strong stock availability, and dependable delivery throughout Ireland.

What sizes are available when I buy Apex Round Downpipe? +

Available sizes include 75mm and 100mm in stock for immediate delivery, with 150mm options supplied on a short lead time.

Can I buy Alumasc cast iron downpipe in custom colours? +

Yes, downpipes are available in factory primed finishes or coated in standard RAL colours to suit your project design.

Is the Apex Round Downpipe suitable for refurbishment projects? +

Yes, the system is suitable for both refurbishment and new build applications, offering strong compatibility with existing cast iron rainwater systems.

Does an Alumasc round cast iron downpipe supplier provide matching fittings? +

Yes, compatible bends, brackets, shoes, and connectors are available to complete your installation.

How quickly can I buy Apex Round Downpipe for delivery? +

In-stock sizes are dispatched promptly, while larger diameter options are typically supplied on a three-week lead time with nationwide delivery available.