[ Specifications / Sector 03 ]

Rainwater Systems

High-performance, architectural drainage systems. Our premium metal rainwater goods combine exceptional hydraulic capacity with clean aesthetic profiles, engineered to protect your building envelope for decades.

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01 / OVERVIEW

Architectural Drainage Engineering

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02 / MATERIAL SPECIFICATION MATRIX

Drainage Systems Materials

Choosing the right metal ensures visual harmony with the roof envelope and guarantees long-term galvanic compatibility (preventing metal-on-metal corrosion).

Material	Profile Options	Visual Transition	Ideal Application
Natural & Pre-Patinated Zinc	Half-round, Box	Develops a uniform matte-grey finish that blends perfectly with zinc roofing.	Modern eco-homes, contemporary extensions, and standing seam matching.
Architectural Copper	Half-round, Ogee	Ages from a bright metallic shine to deep bronze, eventually turning green.	Heritage restorations, traditional oak-frame buildings, and premium statements.
Color-Coated Galvanized Steel	Half-round, Box	UV-stable, scratch-resistant powder coating in RAL colors (e.g., Anthracite Grey).	Modern residential builds seeking crisp lines and high impact resistance.
Seamless & Extruded Aluminium	Box, Ogee, Half-round	Smooth, factory-painted finish with zero visible external joints.	Large-scale commercial envelopes and high-volume residential guttering.

03 / FEATURES

Why Specify Metal Rainwater Goods?

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Superior Hydraulic Flow

Mechanical Integrity

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Galvanic Protection

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Sustainable Lifespan

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04 / INSTALLATION WORKFLOW

Our Precision Process

[ PHASE 1 ]

Hydraulic Calculation & Fall Alignment

[ PHASE 2 ]

Bracket & Substructure Fixing

[ PHASE 3 ]

Joint Sealing & Expansion Allowance

[ PHASE 4 ]

Downpipe & Drop Outlet Integration

05 / TECHNICAL DETAILS

Technical Specifications

Standard sizing options and regulatory compliances for UK rainwater goods specifications.

[ System Compliance ]

Designed and installed in strict accordance with BS EN 12056-3 (Gravity drainage systems inside buildings - Roof drainage, layout, and calculation).

[ Standard Sizes ]

Gutters available in 115mm, 125mm, and 150mm widths; downpipes in 76mm, 80mm, and 100mm diameters.

[ Fixing Methods ]

Choice of fascia brackets, rise-and-fall brackets for direct brickwork fixing, or rafter top/side brackets.

[ Thermal Movement ]

Minimum 5mm expansion gap allowed per 3-meter run for zinc and steel systems to prevent buckling.

06 / FAQ

Frequently Asked Questions

Can zinc or copper gutters be used alongside a slate tile roof?

Yes. Zinc and copper rainwater goods work exceptionally well with natural slate or clay tile roofs. However, you must avoid running water from a copper roof into zinc gutters, as the copper ions will rapidly corrode the zinc via galvanic action.

Do metal gutters require regular painting or maintenance?

No. Unlike timber or cast-iron guttering, modern zinc, copper, and coated steel systems require zero painting or coating maintenance. Their natural patination layer or factory-bonded paint shield protects the raw metal from rust and atmospheric degradation. Maintenance is limited to an annual clearance of leaves and debris.

What is the advantage of a box profile over a half-round profile?

Box profiles offer a sharper, more angular aesthetic that aligns perfectly with modern architectural lines and concealed roof edge details. They also typically hold a higher volume of water compared to an equivalent width half-round gutter, making them ideal for large, steep roof pitches.

07 / CASE STUDIES

Rainwater Systems Showcase

Bespoke copper gutters on heritage building

Bespoke Copper Rainwater Package, Hampshire

[ HERITAGE RESTORATION ]

Installation of 125mm traditional half-round copper gutters and matching 80mm circular downpipes onto a restored heritage oak barn conversion, featuring hand-soldered joints and ornamental hopper heads.

Anthracite steel box gutters installation

Anthracite Steel Box Guttering, Surrey

[ CONTEMPORARY VILLA ]

Clean, high-capacity galvanized steel box gutters in Anthracite Grey (RAL 7016) fitted to a contemporary flat-roof residential dwelling, perfectly color-matched to the building's slimline aluminum window frames.

[ WORK WITH US ]

Ready to Specify Premium Rainwater Systems?

Contact our specialist team today for technical hydraulic sizing assistance, metal material samples, or a comprehensive project estimate.

Request a Consultation 07730 547704