Steel Box Guttering

Why choose our steel box guttering?

Steel box guttering is designed to outperform standard plastic systems while offering a much cleaner visual finish. The straight-edged profile allows rainwater to flow smoothly through the system, reducing the risk of blockages and making ongoing maintenance simple.

Thanks to the strength of steel, these gutters cope far better with heavy rainfall, temperature changes and long-term exposure than PVC alternatives.

High water capacity for UK weather

These steel box gutter profiles are engineered for serious water flow.

Each run can handle up to 3.2 litres per second with a single 100mm downpipe, and up to 6.4 litres per second when using dual 100mm downpipes.

That puts performance on par with large 150mm half-round steel systems, making them ideal for wide roof spans and exposed locations.

Faster, cleaner installation (no sealants)

Unlike traditional box gutter systems that require overlapping sections, manual stop-end seaming and sealants, this system is designed to install quickly and cleanly.

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  1-metre sections come with factory-fitted stop ends
  
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  Seal-free union connectors create reliable joints without mess
  
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  Snap-fix Z-spring system locks sections securely together
  
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  Corner pieces attach directly to straight lengths — no mitre cutting required
  

This not only saves time on site but also reduces the risk of future leaks.

Easy to work with on site

Despite being steel, these box gutters are straightforward to install using standard tools. Sections can be cut with a hand hacksaw, similar to working with plastic systems, and they’re fully compatible with swaged round steel downpipes for simple push-fit connections.

This makes them suitable for both professional installers and confident DIY users.

Sustainable and Built to Last

Manufactured from 0.6mm thick fully galvanised steel, these gutters are designed for long-term performance.

Key benefits include:

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  Life expectancy of 20–35 years (compared to 12–15 years for PVC)
  
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  High resistance to UV exposure (RUV-4)
  
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  Excellent performance in changing temperatures
  
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  100% recyclable steel construction
  

Available finishes include galvanised steel, black and Anthracite Grey (RAL 7016). Additional colours may be available on request, subject to longer lead times and potential additional costs.

Ideal for new builds and renovations

Steel box guttering works equally well on modern new builds and renovation projects. The clean profile instantly updates the look of a property, while the steel construction provides long-term protection against water damage.

If you’re looking for a guttering system that combines modern design, high water capacity and long service life, steel box guttering is a reliable, future-proof choice.

FAQs

How should I prepare the surfaces of the box gutters before joining them?

Clean the outer surfaces at the edges of both the lengths of the gutter to be joined with a suitable cleaning agent. If lengths have been cut down, deburr the ends.

What is the proper way to attach the sealing strip to the gutters?

Attach the sealing strip over both ends of the gutters, starting at the 'bead/roll' at the front edge. Keep a slight tension on the strip to stretch around to the back while smoothing/pressing down for a good bond.

How do I install the bead connector in the box gutters?

Insert the bead connector halfway into the front 'bead/rolls' of both gutters, leaving an approximate 5 mm gap between the ends of the two gutters.

What should I be careful of when removing the protection film from the sealing strip?

Remove the protection film from the adhesive surface on the ridged side of the rubber sealing strip. Make sure to press down on the entire surface of the rubber seal to encourage a good bond over the entire length.

How do I properly attach the box gutter connector?

Hook the connector onto the bead at the front first, then press onto the adhesive surfaces of the seal throughout, wrapping it around the gutter lengths over the join to the back.

Is there any special care required when handling galv steel during installation?

Yes, wear gloves when installing plain galvanised steel as it will dull over time.

Touching it without gloves breaks through the oily surface and starts the weathering process earlier in those areas.

Where should the end/last fascia bracket be placed on the gutter run?

The end/last fascia bracket on the gutter run should be placed 30 cm from the gutter end or corner. Gutter angles/corners are supported by two unions and don’t require their own fascia bracket.

How do I mark the desired location for a wrap-around outlet?

Mark the desired location of the outlet by drawing a line either side of the outlet along its edge. Draw another line 20mm inside of the outer lines and join these.

What is the recommended method for making an initial hole in the gutter for the outlet?

Use a hacksaw to make an initial hole in the gutter, then use a set of tin snips to cut out the inner hole that you have marked out.

How should downpipes be installed and secured?

Downpipes should be installed using at least 2 pipe clips per length. Mark out the clips' locations and level them with a spirit level or plumb line.

Choose either the standard Fixed Depth clip or M10 Boss Adjustable Depth downpipe clip.