1. Visible Peeling or Flaking
Peeling paint is the most obvious sign of failure. It indicates that the paint film has lost adhesion to the substrate — either due to moisture, poor original preparation, paint incompatibility, or age-related breakdown of the binder.
Don't ignore small areas. Peeling spreads as moisture gets under edges and freezes/thaws or causes timber to swell. What starts as a patch can become a wall within a season.
2. Fading and Chalking
UV exposure breaks down paint pigments and resin. Fading is most obvious on north and west-facing walls. If your once-vivid colour looks washed out, the protective resin is degrading too.
Chalking — a powdery residue when you rub the surface — means the paint film is breaking down. Light chalking is normal after 8–10 years; heavy chalking indicates the coating is nearing end of life.
3. Cracking or Alligatoring
Fine cracking patterns (alligatoring) suggest the paint has lost flexibility. This happens with age, or when paint was applied too thickly, or when incompatible paint layers exist (oil over latex, for example).
Cracks allow water penetration, which leads to rot in timber and spalling in concrete. Surface cracking always progresses; it never heals itself.
4. Mould, Mildew, or Algae Growth
Biological growth indicates the paint's biocidal protection has depleted. This is common on shaded walls, under eaves, and in damp areas like those near downpipes.
While you can clean mould, it usually returns within months if the paint film is aged. Repainting with mould-resistant products is the permanent solution.
5. Water Stains or Damp Patches
Blistering, bubbling, or discoloured patches mean water is getting behind the paint. This could be from roof leaks, gutter overflow, rising damp, or failed window sealing.
Never paint over active dampness. The source must be found and fixed first, then the area allowed to dry thoroughly before repainting. We include moisture assessment in our pre-paint inspections.
6. Timber Damage or Rot
Soft timber, fungal growth, or crumbling wood means paint has failed as a moisture barrier. Rotted timber must be replaced or consolidated before repainting — paint won't stick to rotten wood.
We work with carpenters to replace damaged sections, then prime with penetrating wood hardener before applying the paint system.
7. It's Been 8+ Years
Even without visible issues, paint degrades chemically over time. After 8–10 years, the protective resins have weathered significantly. Repainting before failure protects the substrate and is cheaper than repairing damage.
Proactive repainting also maintains property value. A home that looks fresh and well-maintained commands higher prices and rents. We offer free condition assessments to help you plan.