Large Building Signs Made for Long Sightlines

Scale pays off wherever the viewer is a long way from the wall. Typical situations include:

• Head offices and corporate buildings that need to be identified from a main road or an adjacent building.
• Factories, plants and distribution centres with long, blank elevations facing a highway or access road.
• Hotels, conference venues and hospitals where arriving visitors need to confirm they have the right building.
• Showrooms and retail sites set back behind parking areas.
• Multi-tenant buildings where the anchor tenant or the building name takes the top position.

If the building is small or the viewer is close, a smaller sign is usually the better answer. See architectural facade signage for signs designed into the building itself, or building entrance signs for the front door.

Large signs are built in a few common ways, and the right one depends on the wall, the logo and how the sign should look at night.

• Fabricated 3D letters: hollow letters with returns, usually painted aluminium or stainless steel, which can be lit from within. See fabricated 3D metal letters.
• Flat-cut letters: solid cut metal fixed with studs or flush, good for a crisp daytime look. See flat-cut metal letters.
• Cabinet or panel signs: a framed sign with a printed or lit face for logos that are too complex to cut as individual letters.
• Mixed construction: a large cut-out logo with smaller lettering below, sized so each element reads at its own distance.

Fixing method is part of the design: stud mounting on masonry, brackets on a steel frame, or a sub-frame bolted to cladding. We settle this during the survey, not after the sign is made.

Large signs are heavy, so material choice is as much about weight and weather as appearance.

• Aluminium: light for its size, easy to fabricate and paint to a brand colour. The usual choice for big letters.
• Stainless steel: brushed, mirror or painted for a premium look. See stainless steel letters.
• Powder coat or automotive-grade paint: durable colour finishes matched to your brand references.
• Acrylic faces: where the letters will be lit, translucent faces carry the glow.

Our materials and finishes page shows what each looks like in practice.

Large signs can be unlit, front-lit, halo-lit or dual-lit. Lit signs are worth considering when the building is seen mainly after dark, but they add electrical work and ongoing maintenance, so unlit is often right for daytime-only sites.

• Unlit: the simplest and lowest-maintenance option, relying on contrast against the wall.
• Front-lit: the strongest night-time presence. See front-lit channel letters.
• Halo-lit: a softer, more upmarket glow on the wall behind. See halo-lit letters.

Colour-changing or animated lighting is subject to technical assessment and confirmed availability.

Choose large building signs when the main goal is long-distance recognition on a wall you can fix to. Choose a rooftop sign when the walls are not visible from the road but the skyline is. Choose high-rise building lettering when the sign sits at the top of a tower and access and wind loading drive the design. Choose a freestanding sign when nothing on the building can be seen from the street at all.

These are the points we work through at survey and design stage.

• Viewing distance and size: as a rough guide, many designers allow around 25 mm of letter height per 10 m of viewing distance. We confirm this on site, because angle, speed of passing traffic and background clutter all matter.
• Contrast: the sign colour against the wall colour decides legibility more than size does.
• Mounting surface: face brick, concrete, plaster, sheeting and glazing all take different fixings. We check what is behind the surface before specifying anchors.
• Weight and wind: large letters act like sails, so fixing design and spacing are checked. Where structural input is needed, we say so at the start.
• Electrical access: lit signs need a power feed and a safe route for cable.
• Access for installation and maintenance: scaffolding, cherry-pickers or rope access may be needed, which we plan at survey. See signage installation and rigging.
• Approvals: structural, electrical and municipal outdoor-advertising matters are checked during survey and design and may need the landlord, body corporate or municipality.

• Overall size and letter depth.
• Material: aluminium, stainless steel or a combination.
• Lit or unlit, and the lighting type.
• Height of the installation and the access equipment it needs.
• Wall type and the fixing method it requires.
• Complexity of the logo and the number of separate pieces.
• Any engineering input, drawings or approval submissions.
• Number of faces or elevations signed.

Send the building photographs and logo through request a quote and we will tell you what we need to price it properly.

Large signs collect dust, pollution and bird droppings, and high ones are hard to reach. Plan a periodic wash and a visual check of fixings, seals and lit components. Lit signs benefit from scheduled inspections so a failed module is found before it becomes a dark patch on the sign. See signage cleaning and maintenance and LED signage repairs.

Surveys and installations are arranged by appointment across Gauteng from our base in Rivonia, Sandton.

Areas we regularly plan surveys and installations in include: Sandton, Johannesburg, Pretoria, Midrand, Centurion, City Deep. See the full list on the areas page.