How to Apply Campervan and Motorhome Decals: Step-by-Step Guide
Applying campervan and motorhome decals is straightforward once you understand how transfer paper works and which application method suits your decal size. PolyWard decals come with transfer paper already applied, which means the process is different from loose vinyl or self-adhesive stickers. This guide covers everything you need for a clean, bubble-free result.
For long side stripe graphics kits, the application process is slightly different due to the length of the decals. See our dedicated side stripe graphics installation guide for the anchor point and section-by-section technique specific to those kits.
Before you start – what’s in the package
Every PolyWard campervan decal comes with transfer paper already applied to the front face of the decal. The transfer paper holds the decal in position during application and is removed once the decal is stuck to the vehicle. Understanding this three-layer sandwich is the key to a successful application:
- Backing paper – the release liner on the back of the decal. This is removed immediately before application, unless doing a section-by-section installation for long decals / stripe kits.
- The decal itself – the vinyl graphic.
- Transfer paper – on the front face. This stays on until the decal is fully applied to the vehicle, then gets peeled away.
Before you do anything else, lay the decal out flat and firmly squeegee the front face. This bonds the decal to the transfer paper and is the most important preparation step. If any section of the decal is already separating from the transfer paper before you start, it can peel away with the backing paper during application instead of staying with the transfer paper where it belongs. A firm pass with a card or squeegee across the whole decal before opening it up prevents this.
Surface preparation
For decals going onto painted bodywork, a quick clean with a damp cloth or panel wipe is sufficient. Remove any obvious dirt, grease, or wax residue from the area where the decal will sit. Wax and polish residue, in particular, can reduce adhesion. If the panel has been recently waxed, wipe the application area with isopropyl alcohol first. Ensure the area is dry before moving on to the application.
For decals going onto glass — rear windows, skylights — use a glass cleaner followed by isopropyl alcohol.
Avoid applying to heavily textured surfaces, bare metal, or panels with peeling or loose paint. The vinyl will adhere, but the bond is only as strong as the surface beneath it.
Temperature
Application works best between 10°C and 25°C. The window is slightly more forgiving for bodywork-mounted decals than for glass-mounted sunstrips, but cold temperatures still slow the adhesive and make the vinyl less pliable. Avoid applying in direct sunlight; the surface temperature of a dark coloured sun-warmed panel can be significantly higher than the ambient temperature, and the adhesive activates too quickly and gets too tacky.
Dry application method
The dry method is suitable for most decals and is the standard approach for smaller to medium-sized graphics.
Step 1: Peel the backing paper. For smaller decals, peel the entire backing paper away in one go. For larger decals, peel away a corner or a section, apply that area first, then firm the section down before peeling more of the backing paper away from underneath. The section-by-section approach described below gives you more control.
Step 2: Position and apply. Starting from one corner or edge, place the decal onto the panel. Press down firmly from the starting point, working across the decal with a card or squeegee as you go. Keep the transfer paper on at this stage; you are applying through it, not removing it yet.
Step 3: For large decals, use the section-by-section technique. Peel away a section of backing paper, apply and firm down that section, then peel away the next section and repeat. Work steadily from one end to the other. This technique prevents the decal from folding back on itself and gives you control over alignment as you go.
Step 4: Squeegee the whole decal. Once all of the backing paper is removed and the decal is on the panel, go over the entire surface firmly with a card or squeegee. Work from the centre outward toward the edges. This presses the vinyl fully onto the surface and removes any air pockets.
Step 5: Remove the transfer paper. Peel the transfer paper away slowly at a low angle — roughly 45 degrees or less. Keep a card or squeegee to hand as you go. If any section of vinyl starts to lift with the transfer paper, stop, press it back down firmly, and continue more slowly. Rushing the transfer paper removal is the most common cause of lifted decal edges.
Wet application method
The wet method is useful for large decals where precise positioning matters or where you want the ability to reposition after initial placement. It is also slightly easier for complete beginners who are worried about messing up the application. This method can be a matter of installer preference — some people prefer wet for all decals, others use dry for everything. Both produce good results. The main caveat is that the wet method takes a bit longer.
Step 1: Prepare a soapy water solution. A few drops of washing-up liquid in a spray bottle of water. The solution should be mild, not foamy.
Step 2: Mist the panel surface. Lightly spray the area where the decal will sit with the soapy water. The water sits between the adhesive and the panel temporarily, giving you a working window to slide the decal into the correct position.
Step 3: Peel the backing paper and apply. Peel the backing paper away and place the decal onto the wet surface. Slide it into the correct position. The soapy water allows movement for a short time before the adhesive starts to grip.
Step 4: Squeegee from the centre outwards. Once positioned, squeegee firmly from the centre toward each edge, pushing the water out from under the decal. Work methodically because rushing this step traps water and causes bubbles that take longer to disappear.
Step 5: Remove the transfer paper. As with the dry method, peel slowly at a low angle with a card to hand for any sections that try to lift. Allow the decal to dry fully before driving. Water under the vinyl needs time to evaporate through the edges.
Dealing with bubbles
For persistent bubbles, campervan decals have an advantage over sunstrips of thick stripes, because there is negative space between vinyl elements; you can often guide a bubble to the nearest vinyl edge and work it out entirely by squeegeeing toward the edge. This is more effective than the pin-prick method for most bubbles on complex graphics.
For bubbles that can’t be worked out, use a fine pin or needle to make a small puncture at the edge of the bubble, then press the air out gently. The puncture will be invisible once the vinyl settles.
Very small bubbles often disappear on their own within a few days as the adhesive cures and the vinyl settles. Don’t panic about minor bubbles immediately after application.
Applying to curved surfaces
Vinyl conforms well to gentle curves; the gradual curves of most van bodywork are fine. Avoid applying over sharp angles or deep recesses where the vinyl would need to stretch significantly to follow the surface.
For sections that need to follow a gentle edge or body line crease, a heat gun or hair dryer on a low heat setting softens the vinyl and makes it more pliable. Apply gentle heat while guiding the vinyl into the curve with your finger, a squeegee or a soft cloth. Don’t overheat; the vinyl should feel warm to the touch, not hot.
Removing campervan decals
Decal removal is straightforward on vehicles with sound paintwork. Lift one corner of the decal slowly — a fingernail or a plastic trim tool works well — then peel away at a low angle. Slow and steady reduces the risk of the vinyl tearing and leaving adhesive residue behind.
For stubborn sections, a heat gun or hair dryer softens the adhesive and makes removal easier. Keep the heat moving rather than concentrating it in one spot.
Any adhesive residue left on the panel after removal comes off cleanly with a specialist adhesive remover such as Sticky Stuff Remover or similar. Apply, allow it to sit for a minute, then wipe away. IPA works for lighter residue.
There is no risk to sound paintwork during removal. If paint lifts during decal removal, it was already loose before the decal was applied.
Frequently asked questions
Do I need to use the wet method or the dry method?
Either works. The dry method with the section-by-section technique is straightforward for most decals. The wet method gives you more repositioning time and is worth using for large decals where getting the position exactly right matters. It is largely the installer’s preference.
The decal came away with the backing paper when I tried to apply it. What happened?
The decal was not fully bonded to the transfer paper before application. This is the most common fitting issue. Before applying the decal, lay it flat and squeegee the front face firmly to bond the vinyl to the transfer paper. If it happens mid-application, press the decal back against the transfer paper and squeegee firmly before continuing.
Can I apply decals over existing graphics or old adhesive residue?
Not recommended. Apply only to clean, bare paintwork or glass. Old adhesive residue reduces the bond strength of the new decal and can cause edges to lift over time. Clean the surface thoroughly with adhesive remover before applying.
How long should I wait before washing the van?
Wait at least 48 hours after application before washing, and avoid pressure washing directly at the decal edges for the first week. The adhesive continues to cure over the first few days, and high-pressure water at the edges can cause lifting before the bond is fully established.
Will the decals damage my paintwork?
Not on sound paintwork. If paint lifts during application or removal, it was already loose. On older vehicles with original paint that may have degraded, test adhesion on a small inconspicuous area first.
Can I apply decals in winter?
Yes, but keep above 10°C if possible. Installing in a garage or workshop brings the surface temperature up enough on a cold day. Cold vinyl is less pliable, and the adhesive is less aggressive, which can result in edges lifting over time if applied in very cold conditions.
See the full range of PolyWard campervan and motorhome decals — an excellent selection of unique designs and themes are available. PolyWard graphics are UK-made, suitable for campervans, motorhomes, caravans, vans and any general indoor or outdoor application.