Start With the Distance, Not the Design

Most banner disappointments come from the same source: choosing a size before deciding where the banner will actually stand. A design that sings on a shop window in the North Laine can be completely unreadable on the A23 approach, and the only real difference is how far away people are when they see it.

So before you open a layout program or brief a designer, answer three questions. Where will people be when they look at this? How long do they have to look? And how fast are they moving? In Brighton, that range is wide — a two-second glance from a seafront stroller on the promenade is a very different brief from a driver braking on Madeira Drive or a delegate walking a trade stand aisle at the Brighton Centre.

The Simple Maths of Legible Text

Signage professionals work to a rough rule of thumb: allow about 25mm of capital letter height for every 3 metres of viewing distance. In metric terms, that means roughly 8mm of letter height per metre as a bare minimum. Double it for a message you want to land with impact rather than simply be technically readable.

• 1–3 metres (indoor, shop counter, beside the banner): 20–40mm cap height
• 3–10 metres (pavement, forecourt, market stall): 40–100mm cap height
• 10–30 metres (roadside, promenade, event entrance): 100–250mm cap height
• 30–60 metres (fast road, dual carriageway, large outdoor site): 250–500mm cap height
• Beyond 60 metres: 600mm and up, and no more than three or four words

Work backwards from that. Write your message first, count the words, then size the banner to make it fit comfortably. If your wording runs to twelve words, either the banner grows or the message shrinks. Bigger lettering is almost always worth more than more lettering.

Roadside Banners and Approach Signage

At 30mph you cover about 13 metres every second, so a driver on the coast road or the A27 has perhaps two to three seconds to notice, read and act. Keep the message to a name, a promise and a direction — three or four words plus an arrow or a phone number.

As a rough guide, the banner itself should be at least one tenth of the viewing distance in height, so a sign meant to be read 20 metres away wants to be around 2 metres tall. Mount roadside banners high, ideally with the top of the text between 2.5 and 4 metres from the ground, so it clears railings, parked cars and pedestrians. High-contrast dark text on a light ground beats subtle pastels every time, and a single bold sans-serif outperforms a decorative font at any distance.

Wind is the other Brighton consideration. For seafront or exposed locations, specify a mesh banner, reinforced hems, eyelets at 500mm intervals and bungee ties rather than rope, so the banner flexes without tearing the corners out.

Pavement, Seafront and Promenade Displays

Pedestrians move at roughly 1.2 to 1.4 metres per second and will look at a banner for two to four seconds, so you have a little more room than with drivers — but not much. For pavement and promenade work, aim for 60–100mm cap height at 5 to 8 metres. Keep the essential message in the top third of the banner, because buggies, dogs and crowds regularly block the lower section on a busy Saturday.

Pavement banners and A-boards also need to satisfy the practical realities of a high-footfall city: weighted bases, low profiles that do not become a trip hazard, and frames that can be brought in overnight. Feather flags suit seafront events and shop launches well because they lift the message above head height, but they need proper ground stakes or water bases to survive a gust off the Channel.

Indoor Displays, Shop Windows and Event Stands

Indoors, viewing distances collapse and detail becomes your friend. Pull-up banners are typically seen from 1 to 2.5 metres, so 20–30mm cap height works well for body text and 60–80mm for a headline. Keep the bottom 600mm clean-ish: it sits below eye level and is usually hidden behind a table, a plant or a colleague's legs.

At an exhibition stand, aisle traffic is usually 3 to 6 metres away, so plan for 40–60mm lettering on back walls and pop-up systems. Shop windows vary enormously — a narrow-lane window in the Lanes may only be viewed from a metre or two across the pavement, while a corner site with a wide pavement might stretch that to 6 metres. Match the lettering to the average rather than the best-case distance, and test your design under the actual lighting, since a brightly lit window can wash out pale colours that looked fine on screen.

Getting the Size Right Before You Print

There is a cheap way to check any layout. Print your design at A4, then view it from a scaled distance: multiply the real viewing distance by 0.297 divided by the banner's width in metres. A 3-metre banner to be read at 20 metres, for example, should be judged with your A4 sheet about 2 metres away. If you cannot read the headline comfortably at that distance, the finished banner will fail too.

• Order a spare — banners get damaged by wind, ladders and delivery vans
• Allow 100mm pole pockets and a reinforced hem if the banner will be tensioned
• Ask for a small indoor version of the same artwork for shop and stand use
• Check that text sits at least 50mm inside the edge, clear of eyelets

Get the distance right and everything else — material, finish, mounting — falls into place around it.