Definition
The pressure-sensitive adhesive layer that bonds PPF to a suitable substrate, distinct from the carrier film and top coat.
Why it matters
Paint condition, preparation and fitting affect adhesion. Removability is not a guarantee that weak paint layers cannot lift. Avoid unapproved preparation residues and keep the product’s installation instructions with the fitting record.
Apply the concept
Choosing an installer and understanding the work
Practical questions about preparation, cutting, edges and handover, plus realistic limits for DIY kits.