Where to buy aluminium extrusions for sign making in the UK

If you are looking for aluminium extrusions for sign making in the UK, choosing the right supplier is about more than finding the right profile at the right price.

For a sign maker, availability, finish, compatible fixings and delivery times can have just as much impact on a job. When an installation is booked for Friday, finding out on Wednesday that the aluminium profile you need has a long lead time can quickly become a problem.

That is why Sign Trade Supplies (STS) stocks a wide range of aluminium extrusions, profiles and components specifically for the UK sign trade. Whether you need sign channel for a straightforward post-mounted panel, aluminium box section for a larger freestanding sign or profiles for a complete sign system, you can order online and have products delivered across the UK.

What aluminium extrusions are used in sign making?

Aluminium extrusions are used throughout sign fabrication and installation because aluminium combines relatively low weight with good strength and corrosion resistance. Rather than starting with sheet material and fabricating every component from scratch, sign makers can use purpose-made profiles to create frames, posts, rails and mounting systems.

• Sign channel
• Round aluminium sign posts
• Square aluminium box section
• Rectangular aluminium box section
• Sign framing profiles
• Panel and post system profiles
• Sign rails and mounting profiles
• Totem and monolith components
• Powder-coated aluminium profiles

One of the most common examples is aluminium sign channel. The channel is bonded or fixed to the back of an aluminium or ACM sign panel and can then be used with sign clips, clamps or banding to secure the panel to a post. This creates a straightforward installation method without visible fixings through the face of the sign.

Where can sign makers buy aluminium extrusions in the UK?

There are plenty of general aluminium stockholders in the UK. The more important question for a sign maker is whether the supplier understands signage.

A general metal supplier may be able to provide standard aluminium tube or box section, but signage projects often need much more specific components. You might need the correct channel to work with your post clips. You might need a particular powder-coated finish. Or you might need posts, caps, channel, clips and fixings to arrive together so the installation can actually go ahead.

Sign Trade Supplies has supplied the sign industry since 1989 and aluminium profiles and fixings have become a major part of our range. Our focus is not simply on stocking metal, but on supplying products that work together for real sign manufacturing and installation projects.

Aluminium extrusions available from Sign Trade Supplies

Our range covers aluminium profiles for everything from everyday panel installations through to larger freestanding signage.

Aluminium sign channel

Sign channel is one of the most widely used aluminium extrusions in UK sign making. Once bonded to the back of an ACM or aluminium sign blank, the channel can be paired with anti-rotational clips, universal channel clamps or banding systems to mount the panel to posts and other structures. For sign makers producing post-mounted signs regularly, keeping commonly used channel available can make fabrication and installation much quicker.

Aluminium sign posts

STS supplies aluminium posts for freestanding and post-mounted signage, including round and square profiles. When specifying posts, remember that diameter is not the only consideration. Wall thickness plays an important part in the structural performance of hollow aluminium sign posts, particularly where wind loading becomes significant.

Aluminium box section

Box section is an extremely useful profile to have available in a sign workshop. It can be used for sign frames, support structures, fabricated signage, architectural features and custom sign projects. Depending on the profile, STS offers different sizes, lengths and finishes, giving sign makers the option to purchase material suited to the project rather than having to adapt an unsuitable stock profile.

Why buy sign extrusions from a sign trade supplier?

Buy what you need

Small and medium-sized sign companies do not always want to hold large quantities of aluminium. You may only need enough profile for one job. STS offers no minimum order quantities across our core ranges, allowing sign makers to purchase around the project in hand rather than tying money up in unnecessary stock. That can be particularly useful when you are quoting less familiar types of signage and do not want leftover material sitting on the rack afterwards.

Get the fixings at the same time

Having the extrusion is only half the job. Depending on what you are building, you may also need channel clamps, post clips, bolts, caps, banding, adhesives or other installation components. Sourcing more of the complete installation from one sign trade supplier can save time and reduce the risk of incompatible components reaching site.

Shop sign fixings & components

Choose ready-finished profiles

Finishing aluminium can add another stage to an already tight production schedule. STS holds a range of pre-powder-coated profiles alongside mill-finish options, helping sign makers reduce the amount of additional finishing required before fabrication or installation.

Nationwide delivery

Long aluminium profiles are not always the easiest products to move around the country. STS has developed its logistics around supplying bulky and oversized sign products nationwide from our Kent-based warehouse. For a sign maker, the important bit is simple: you do not need to be based near us to use STS as your aluminium extrusion supplier.

What should you check before ordering aluminium sign extrusions?

1. 01
   Profile dimensionsCheck the outside dimensions, wall thickness and profile shape rather than relying on a general description such as “large post”.
2. 02
   LengthThink about both the finished size and how the material will be transported, handled and cut in your workshop.
3. 03
   FinishDecide whether you need mill finish aluminium or a finished profile such as black or white powder coat.
4. 04
   Compatible componentsCheck that your channel, clips, clamps, caps and other fixings are compatible before the material reaches site.
5. 05
   Structural requirementsFor larger external signage, post selection should not be based on appearance alone. Wind loading, sign area, mounting height, wall thickness, foundations and site conditions can all affect the specification.

If you are unsure which profile or fixing combination you need, speak to the STS team before ordering.

Need an aluminium profile for a sign project?

Not every signage project fits neatly into a standard product description. Perhaps you have been asked to quote a larger freestanding sign than usual. Maybe you are trying to work out which extrusion works with an existing fixing. Or perhaps you simply need to know what is available quickly enough to meet the installation date.

That is where dealing with a supplier that understands sign making helps. STS combines online ordering with dedicated account management and practical product support. Our approach is to understand what you are trying to achieve and help you find the right route to get the project completed.