Introduction

When businesses order a banner, sign or exhibition graphic, they often focus on the design and the price. The material is treated as a technical detail for the printer to decide. Yet the material determines how the graphic looks, how long it lasts, how safe it is, how easy it is to install and how much it costs. A beautiful design printed on the wrong material can fade, curl, tear or peel within months.

Large-format printing uses a wide range of materials, from flexible banners and self-adhesive films to rigid panels and textiles. Each has strengths, limitations and ideal uses. This guide explains the most common options in plain English, so you can make informed decisions with your print partner, especially for the demanding conditions of Sri Lanka and the Gulf.

What is large-format printing?

Large-format printing, also called wide-format printing, refers to printing on machines that can handle rolls or sheets much wider than standard printers, typically from around one metre to over five metres wide. It is used for:

• Billboards and hoardings.
• Banners and building wraps.
• Shop signs and window graphics.
• Exhibition stands and backdrops.
• Vehicle graphics.
• Wall murals and interior graphics.
• Point-of-sale displays.

Printing technologies

Common large-format inks include:

• Solvent and eco-solvent inks: durable and widely used for outdoor banners and vinyl. Eco-solvent inks have lower odour and are suitable for indoor use once dried.
• UV-curable inks: cured instantly with ultraviolet light, they print directly onto rigid materials such as acrylic, ACP, wood and glass, as well as rolls.
• Latex inks: water-based inks with low odour, popular for interior graphics, wallpaper and vehicle graphics.
• Dye-sublimation: used for printing on polyester fabrics, producing vibrant, washable textile graphics.

The ink and material must be compatible, so the choice of material often determines the printing method.

Flexible materials

Flex banner (PVC flex)

Flex is the most common material for billboards, hoardings and outdoor banners in Sri Lanka. It is a PVC-coated polyester fabric available in different weights and grades.

• Frontlit flex: for billboards lit from the front or not lit.
• Backlit flex: translucent, for lightboxes and backlit billboards.
• Blockout flex: opaque, for double-sided banners.
• Mesh banner: perforated so wind passes through, ideal for building wraps and windy locations.

Strengths: affordable, strong, weather-resistant and available in very large widths.

Limitations: heavy, PVC-based and difficult to recycle. Cheaper grades may fade or crack sooner in strong sun.

Best for: billboards, hoardings, event banners and temporary outdoor signs.

Self-adhesive vinyl

Self-adhesive vinyl is a printable film with an adhesive backing. It sticks to smooth surfaces such as panels, walls, glass and vehicles.

• Calendered vinyl: more affordable, suitable for flat surfaces and shorter-term use.
• Cast vinyl: thinner, more stable and conformable, ideal for vehicles and curved surfaces, and longer-lasting outdoors.
• Removable vinyl: for temporary graphics that can be removed cleanly.
• Permanent vinyl: for long-term signage.
• Perforated window vinyl (one-way vision): shows an image from outside while allowing people inside to see out.
• Frosted vinyl: for glass privacy and decoration.
• Floor vinyl: used with anti-slip laminate for floor graphics.

Strengths: versatile, sharp print quality and many finishes.

Limitations: needs smooth, clean surfaces; installation skill matters.

Best for: signs, windows, walls, vehicles and floors.

Lamination

Lamination applies a clear protective film over printed vinyl. It protects against UV fading, scratches and cleaning, and can add a matt or gloss finish. For vehicles, floors and outdoor signs expected to last more than a short period, lamination is usually recommended.

Fabric

Printed polyester fabrics are increasingly popular for exhibitions, events and interiors.

• Tension fabric: stretched over aluminium frames with silicone edge graphics (SEG), creating seamless, wrinkle-free displays.
• Backlit fabric: for illuminated lightboxes with a soft, even glow.
• Flags and feather banners: lightweight fabrics for outdoor promotion.
• Backdrops: for stages and photo walls.

Strengths: lightweight, easy to transport, crease-resistant, reusable and premium-looking. Many fabrics can be washed and some are recyclable.

Limitations: usually needs frames or fixings; outdoor fabrics may fade faster than some vinyls.

Best for: exhibition stands, lightboxes, events and interiors.

Canvas and wallpaper

Printed canvas offers an artistic texture for interior decoration. Printed wallpaper is used for large wall murals, offering a premium finish that can cover entire walls.

Rigid materials

Foam board

Foam board is a lightweight board with a foam core between paper or plastic facings.

Strengths: very light and affordable.

Limitations: dents easily; not suitable outdoors.

Best for: indoor signs, presentation boards and short-term displays.

PVC foam board (Sintra-type board)

PVC foam board is a rigid, lightweight plastic sheet.

Strengths: durable indoors, easy to cut and suitable for some short-term outdoor uses.

Limitations: can warp in heat and strong sun over time.

Best for: indoor signs, display panels and cut-out shapes.

Corrugated plastic board

A lightweight, fluted plastic board.

Strengths: waterproof, affordable and light.

Limitations: less premium appearance.

Best for: temporary outdoor signs, election-style boards and site signs.

Aluminium composite panel (ACP)

ACP consists of two thin aluminium sheets bonded to a plastic or mineral core.

Strengths: flat, rigid, weather-resistant, durable and professional-looking.

Limitations: heavier and more expensive than plastic boards.

Best for: shop fascia signs, outdoor signs, building cladding and long-term displays. For building cladding, fire-rated cores are important, and local building and fire regulations should be followed.

Acrylic

Acrylic (often called Perspex) is a clear or coloured plastic sheet.

Strengths: glossy, premium appearance, available in many colours, can be laser-cut and illuminated.

Limitations: scratches more easily than glass; needs careful handling.

Best for: reception signs, 3D letters, illuminated sign faces, displays and POS units.

Wood and metal

Wood, stainless steel, aluminium and brass are used for premium signs and displays.

Strengths: distinctive, durable and high-quality appearance.

Limitations: higher cost and longer production times.

Best for: corporate reception signs, premium retail and hospitality branding.

Cardboard and paper-based boards

Corrugated cardboard and display board are used for temporary POS displays and exhibition elements.

Strengths: affordable, lightweight and widely recyclable.

Limitations: sensitive to moisture and heavy handling.

Best for: short promotions, retail displays and event stands.

Fixings and finishing

The material is only part of the story. How a graphic is finished and fixed affects its appearance, safety and lifespan.

Banner finishing

• Hemming: folding and welding or stitching the edges of flex banners to strengthen them.
• Eyelets: metal rings along the edges for tying banners to frames or structures with cable ties or rope.
• Pole pockets: sleeves at the top and bottom for poles, common for hanging banners.
• Keder edging: a rubber or plastic bead along the edge that slides into frames, used for building wraps and large billboards.

For windy locations, more eyelets, stronger ties and mesh materials reduce the risk of tearing.

Rigid board finishing

• Cutting: straight cuts, contour cuts and shaped signs.
• Drilling: holes for screws and stand-off fixings.
• Edge finishing: polished acrylic edges or folded ACP trays for a clean appearance.
• Mounting: printed vinyl applied to boards, often with lamination.

Fixing methods

• Stand-off fixings: metal spacers that hold acrylic and ACP panels slightly away from the wall for a premium look.
• Double-sided tape and adhesives: for lightweight indoor signs on suitable surfaces.
• Screws and anchors: for permanent outdoor and heavy signs.
• Frames and rails: for changeable graphics.
• Magnets and hook-and-loop: for temporary displays.

The fixing method must suit both the sign and the surface. A heavy sign fixed with tape, or an outdoor sign fixed with indoor anchors, can fall and cause injury.

Fire safety and regulations

Materials used inside public buildings, event venues and exhibition halls may need to meet fire safety requirements. Many exhibition organisers require fire-retardant materials and may ask for certificates. For building cladding, aluminium composite panels must have suitable fire-rated cores according to local building regulations. Fire safety should always be confirmed with the venue, building owner or relevant authority before production.

Storage and handling

How graphics are stored and handled between uses affects how long they last:

• Roll flexible graphics with the printed side facing outward, unless the printer advises otherwise, and avoid sharp folds.
• Keep fabric graphics clean and dry, and fold them as recommended.
• Store rigid panels flat or upright with protective sheets between them.
• Keep materials away from direct sunlight, heat and damp.
• Handle acrylic with gloves to avoid fingerprints and scratches.

Good storage makes reusable exhibition and event graphics last for many years.

Choosing the right material

Consider these questions:

1. Indoors or outdoors? Outdoor graphics need UV and weather resistance.
2. How long must it last? A one-day event, a three-month promotion or several years?
3. What surface will it go on? Smooth, textured, curved, glass or none?
4. Will it be illuminated? Backlit materials need translucency.
5. How will it be installed? Frames, adhesive, eyelets, cable ties or fixings?
6. Will it be moved or reused? Lightweight and reusable materials suit exhibitions.
7. What is the budget?
8. What are the safety and fire requirements?
9. What happens at the end of its life?

Materials in tropical and desert climates

Sri Lanka’s climate brings intense sun, heavy monsoon rain, high humidity and salty coastal air. The UAE adds extreme heat, sand and dust. These conditions affect materials:

• UV exposure: fades inks and degrades plastics. UV-resistant inks and lamination extend life.
• Heat: can cause vinyl to shrink or adhesive to soften. Quality materials and correct application help.
• Humidity and rain: affect adhesion and can cause mould on some materials. Surfaces must be dry and clean during installation.
• Salt air: corrodes metal fixings and frames. Stainless steel or treated fixings are needed near the coast.
• Wind: can tear banners. Mesh banners and secure fixings reduce risk.

Choosing materials suited to these conditions costs more initially but often saves money by avoiding early replacement.

Matching materials to common projects

To make choices easier, here are typical combinations we recommend:

These are general recommendations. Each site and project has its own needs, so a survey and a conversation with your print partner remain the best starting point. It is also worth asking for printed samples of the materials you are considering. Seeing and touching a sample of cast vinyl, backlit fabric or brushed aluminium composite panel makes it much easier to judge the finish, colour and quality than choosing from a description or a photograph on screen.

Print quality and resolution

Large-format graphics are viewed from different distances, so resolution requirements vary. A billboard viewed from far away needs less resolution per inch than a poster viewed up close. However, images must still be high quality at the final size. Designers should:

• Use vector artwork for logos and text.
• Supply images at suitable resolution for the viewing distance.
• Use the colour profiles recommended by the printer.
• Check colours with printed samples for critical brand colours.

Sustainability

Large-format printing has environmental impacts, mainly from PVC materials, solvent inks and waste. More sustainable choices include:

• PVC-free banners and films where suitable.
• Recyclable polyester fabrics.
• Paper-based and cardboard displays for short promotions.
• Latex and UV inks with lower emissions.
• Reusable frames and structures, replacing only the graphics.
• Ordering accurate quantities to avoid waste.
• Recycling or repurposing old banners.

Sustainability claims should be specific and verifiable, for example naming the material and its recyclability, rather than vague terms such as “eco-friendly”.

Cost comparison

As a general guide, from lower to higher cost per square metre:

1. Corrugated plastic and foam board.
2. Flex banners.
3. Calendered vinyl on board.
4. Fabric graphics.
5. Cast vinyl with lamination.
6. ACP signs.
7. Acrylic signs and letters.
8. Metal and illuminated signs.

Actual prices depend on quantity, size, printing, fabrication and installation.

Questions to ask your print partner

• Which material and ink do you recommend, and why?
• How long should it last in this location?
• Is lamination needed?
• What fixings will you use?
• Is the material fire-rated if required?
• Can I see a sample first?
• How should it be cleaned, stored and eventually disposed of?

Common mistakes

• Using indoor materials outdoors.
• Choosing the cheapest flex for long-term billboards.
• Skipping lamination on vehicle and floor graphics.
• Applying vinyl to dirty, damp or textured surfaces.
• Ignoring fire ratings for building cladding and event venues.
• Forgetting how graphics will be removed or disposed of.

Illustrative example

The following example is illustrative and does not describe a real client.

A beverage company runs a three-month promotion in supermarkets and a long-term billboard campaign. For supermarket displays, it chooses printed cardboard units that are recyclable after the promotion. For in-store hanging signs, it uses lightweight PVC foam board. For billboards, it uses quality frontlit flex with UV-resistant inks, and for its distribution trucks, cast vinyl with lamination. Each material matches the use, lifespan and budget, and the brand looks consistent across all of them.

How Dsigngo Group can help

Dsigngo Group advises on materials for every large-format project, balancing appearance, durability, safety, budget and sustainability. Our services include large-format printing on flexible and rigid materials, fabric graphics, signage fabrication coordination and installation.

Frequently asked questions

What is the difference between flex and vinyl?

Flex is a heavy PVC banner material usually stretched or tied in place. Vinyl is a thinner self-adhesive film applied to surfaces.

How long does outdoor vinyl last?

It depends on the vinyl grade, lamination and exposure. Calendered vinyls generally last less time outdoors than cast vinyls. Your printer can advise on expected life.

Are fabric graphics suitable for outdoor use?

Some fabrics are designed for outdoor flags and banners, but most tension fabric graphics are intended for indoor use.

Which material is best for a shop sign?

ACP and acrylic are common for durable shop signs, often with illuminated letters or lightboxes.

Can banners be recycled?

PVC flex is difficult to recycle in many places. Reusing banners, choosing PVC-free alternatives or recyclable fabrics helps reduce waste.

Conclusion

The right material makes the difference between a graphic that looks great for years and one that fails within months. By considering location, lifespan, surface, lighting, installation, budget, safety and sustainability, you can choose materials that deliver the best value for every project.

Not sure which material suits your project? Talk to Dsigngo Group.

Ask About Materials

Sources

• Dsigngo Group production experience.
• Manufacturer guidance on vinyl, flex and ACP products (general).