Zinc Box Guttering

A box profile gives a rainwater system a very different look from traditional half-round guttering.

The straight sides and deeper profile create a crisp, architectural finish that works particularly well on contemporary homes, large extensions, zinc roofs and commercial buildings. The larger cross-section also makes this style useful where a roof needs greater drainage capacity.

Our 120mm zinc box gutter is manufactured from VMZINC Quartz Zinc, so you get the darker grey appearance of naturally weathered zinc without waiting for the surface to change gradually outdoors.

If you like zinc but prefer a softer, more traditional profile, our half-round zinc guttering is likely to be the better choice.

Box Profile Or Half Round Zinc Guttering?

There isn't one profile that suits every building!

Half-round guttering has the familiar curved appearance seen on everything from period properties to contemporary extensions. Box profile zinc guttering is squarer and more pronounced, making it a natural fit where clean lines are part of the design.

It can also offer useful additional capacity for larger roof areas, although the correct gutter and outlet arrangement should always be based on the drainage requirements of the particular building.

Visually, though, the difference is simple: if you want your rainwater system to feel sharp and architectural rather than traditional, box profile is usually the one to look at.

The VMZINC Quartz Zinc Box Gutter System

This isn't simply a standard gutter with a different shape.

The system uses pre-weathered zinc box guttering produced from VMZINC Quartz Zinc, giving the surface its distinctive matt-grey appearance from installation. This pairs particularly well with zinc roofing, slate, dark window frames and contemporary cladding.

The main gutter length is approximately:

• 120mm wide
• 85mm deep
• 3m long
• Quartz Zinc pre-weathered finish

That combination makes it particularly useful for customers searching for a 120 × 85mm zinc gutter or a larger-capacity alternative to smaller domestic profiles.

80mm Or 100mm Outlet?

The gutter might be the most visible part of the system, but the outlet and downpipe are just as important.

You can choose between 80mm and 100mm outlets, allowing the system to connect into matching zinc downpipes.

The right size depends on the drainage requirements of the roof rather than simply choosing the largest pipe available. Roof area, pitch, outlet positions and the number of downpipes all influence how efficiently the system will deal with heavy rainfall.

If you're working from plans, Trade Warehouse can help you work through the outlet and downpipe arrangement before you order.

How Is Zinc Box Guttering Installed?

This is one area where the box system differs noticeably from some of our other zinc gutter ranges.

The 3m zinc box gutter lengths, corners and outlets are designed to form a professionally jointed system, and the main joints require soldering. For that reason, this isn't the range I would choose if your main priority is a simple DIY installation.

If you're already comfortable working with architectural zinc — or you're using an experienced installer — the result is a very neat, durable rainwater system with far less visual interruption at the joints.

Stop Ends And Körapop Sealant

Stop ends are treated differently from the main soldered gutter joints.

The appropriate Körapop Concrete Grey Adhesive & Sealant is used when installing the relevant stop-end details, helping create a secure and discreet finish that blends with the Quartz Zinc.

It's important not to assume every joint across the system uses the same method. Following the correct installation process for each fitting is key to getting the best result.

Allowing For Zinc To Move

Like other sheet metals, zinc expands and contracts as temperatures change.

Long runs therefore need to be planned with thermal movement in mind rather than simply joining gutter lengths continuously across an entire elevation. Expansion provision becomes particularly important on larger buildings and longer gutter runs.

This is one of the reasons we'd recommend professional installation for VMZINC box guttering, especially on more complicated projects.

Complete The Whole Rainwater System

A proper installation needs more than the gutter lengths.

Depending on the layout of your building, you may need:

• Fascia brackets
• Left and right stop ends
• Internal angles
• External angles
• Running outlets
• 80mm or 100mm downpipes
• Downpipe bends and offsets
• Pipe clips
• Shoes
• Specialist sealant

Our zinc downpipe range includes the matching components needed to carry water away from the box gutter system.

For more unusual drainage details, you can also browse our zinc hoppers, including options for parapet and other rainwater arrangements.

Don't Forget The Brackets

A larger gutter can hold a significant volume of water, so the supporting brackets are an important part of the system.

Use the correct brackets for the profile and follow the specified centres rather than adapting brackets intended for a different gutter range. Correct support helps maintain the gutter line and ensures the system performs as intended when it is carrying water.

Is This An External Or Concealed Box Gutter?

This is worth clarifying because the phrase “box gutter” can describe two quite different things.

The system sold on this page is an external, fascia-mounted box-profile gutter system.

It isn't a bespoke internal gutter channel built into a roof valley or concealed behind a parapet and lined with sheet zinc. Those types of concealed box gutters are designed and fabricated differently.

So, if your drawings show a visible external 120mm gutter fixed along the roof edge, this system may be suitable. If they show a hidden gutter built into the roof construction itself, send us the detail before ordering.

Why Buy Zinc Box Guttering From Trade Warehouse?

This collection brings the main components of the Quartz Zinc system together, so you can order the gutter lengths, brackets, outlets, stop ends and angles from one place rather than trying to match parts from several suppliers.

You can also pair the system with our Quartz Zinc guttering, matching downpipes and specialist fittings if the building uses different zinc profiles across separate elevations.

Working from architectural drawings or a roof plan? Send them over. We can help identify the products and quantities required before you place the order.