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How to Produce a Two-Sided Window Graphic Using Sandwich Mode Printing
Two sided window graphics are a powerful tool for communication on glazed surfaces. Whether for retail campaigns, corporate branding, or architectural decoration, sandwich mode printing delivers vibrant colour, excellent readability, and high durability.
In this guide we’ll explain what sandwich mode is, when it’s appropriate, and how to produce a high-quality double sided window graphic using professional print materials available from Perfect Colours.
What Is Sandwich Mode Printing?
Sandwich mode is a layering technique used in large format printing where multiple films are printed and combined so that a graphic can be read from both sides of a window without show through or colour contamination. It combines:
- Front graphic layer
- White or blockout layer
- Reverse graphic layer
This ensures clarity and opacity from both interior and exterior viewing angles.
For materials suited to window graphics, browse the Perfect Colours media range here: View full range
When to Use Sandwich Mode?
Use sandwich mode when you need:
- Clear, vibrant messaging visible from both sides
- No light bleed or distracting show-through
- Durable graphics that handle high-traffic environments
- Premium visual impact
Typical applications include retail frontages, corporate office glazing, hospitality venues, and exhibition displays.
Recommended Media for Sandwich Mode:
These products can form part of a sandwich mode window graphic solution:
Ultra clear window films
Neschen Solvoprint Window Grip Ultra Clear 1372mm x 50m
- PET-based ultra clear film ideal for glass and repositionable without residue.
Easy Dot 100 PE Clear 1067mm x 50m
- Clear monomeric PVC film with dot adhesive suited to interior print applications.
Printable base or blockout layer options
KernowJet Supreme Polyester 300mic Roll Up Film 914mm x 50m
- Sturdy polyester film that can be used as a backing or opaque layer.
(These can help block light and increase opacity when used between print layers.)
These products give you flexibility with transfer and mirrored print setups. You can mix and match depending on the specific application or printer being used
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Step-by-Step: Producing a Two-Sided Graphic
1. Prepare Artwork
You will need two files:
- Front view (exterior facing)
- Reverse view (interior facing)
Ensure the artwork is mirrored correctly and sized to match a registered alignment once laminated.
If you need help with setup or specifications, reach out here:
https://www.perfectcolours.com/contact-us/
2. Print the Layers
Using a printer compatible with Latex, UV, or solvent inks:
- Print the front graphic
- Print a white or blockout layer (to stop show-through)
- Print the reverse graphic as a separate pass
Printers with white-ink capabilities or multi-pass layering are ideal for this workflow.
3. Laminate
Laminating the three layers together creates the composite “sandwich”. This improves:
- Colour saturation
- Internal opacity
- Handling durability
Perfect Colours offers a range of lamination films and finishes suitable for window graphics.
4. Trim and Stabilisation
Once laminated, trim the graphic and allow it to stabilise before installation — this avoids edge lift and distortion.
5. Installation
Apply the composite graphic to clean glass using standard window film application techniques. Internal mounting is recommended for longer life and protection from weather or cleaning wear.
Benefits of Sandwich Mode
- Double sided readability with no show through
- Excellent opacity from both directions
- Professional finish with vibrant colour
- Suitable for long term and high traffic use
These qualities make sandwich mode ideal for flagship windows and high impact visual campaigns.
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Lets talk!
We're here to help. Whether you're looking to get started with a large format printer or you've been in the industry for years, our team of qualified specialists are always happy to lend a hand. Give us a call on 0845 680 9000.
Our doors are open from 9am to 5.30pm Monday to Friday, but you can drop us an email at anytime and we'll get back to you as soon as we can.
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