In the RC hobby, decals are probably the least functional yet most impactful inclusion on any RC models. No matter how dashing the decals are, they will inevitably peel and lift - turning your model from a solid 10/10 to an at best 3/10 mess.

Why Do Decals Peel or Lift?

There are many reasons why your decals may lift. It may be a case of a rushed first-application. Or the paint and the adhesive on the decals are not a good match. It could even be attributed to environmental factors such as high humidity or flying in the rain. No matter what the reasons are, we can fix it.

What You Will Need

  • PVA (Polyvinyl Acetate) Glue
  • Packing Tape or Masking Tape
  • Baking Paper or Parchment Paper
  • Small brush or Cotton Swab
  • Covering Iron or Household Iron (Optional)
  • A small weight to place over the decal
  • Damp Cloth

Step 1: Study the Problem

Start by studying the decal and work out what needs to be struck down. Gently pry the decal a little back to see how the adhesion is around the affected area. If you can pry around the decal, you can apply PVA to the entire outer rim of the decal to stop this from happening in the future. If the decal appears to be well bonded to the model surface, you can leave it. Place the baking paper over the decal and ensure you have enough to completely cover the surrounding area. Set this aside as you will need this to completely cover the decal once the glue is applied.

Step 2: Apply Glue

Dip your brush or swab into the PVA glue and begin to coat the decal - refrain from applying too much at once. Gently press the decal down working from the inner part of the decal out. Use a damp cloth to clean up any excess PVA glue. Place the baking paper over the decal and ensure that the decal is in position; you should be able to see through the baking paper. For the best results, place a weight on the decal and then hold everything down with packing or masking tape. Be sure to place the sticky side out so that it doesn't stick to the model and damage the paint.

Step 3: Leave your Model to Dry

Let your decal dry out by placing it in a warm place. Generally, you can handle your model again after a few hours and it will be ready for action after a day. When removing the tape from the model, take extra care to avoid ripping the paint with it.

Step 4: Final Touch-ups with a Covering Iron

If your decal is a little wrinkled from excess glue or air bubbles, you can use a covering iron (or any regular iron) to smoothen out any creases. Place a sheet of baking paper and a piece of felt over the wrinkled decal. Start massaging the area with the coolest setting and slowly turn the heat up as required.  Be careful not to overheat the model as the foam will bulge and spoil the finish. Best of luck and let us know if this worked for you!

Article originally published on Jan 15, 2019, and updated on November 17, 2020.

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