Mildew or mold on exterior paint — Alicante, Valencian Community
Dark green, gray, or black splotches on exterior-painted surfaces — siding, trim, soffits, and window frames — are usually mildew or mold growth on the paint film itself. Mildew thrives on north-facing walls, shaded areas, and surfaces near sprinklers or dense landscaping where moisture lingers. Unlike dirt, mildew is organic growth that feeds on the paint's binder and won't wash off with water alone. A bleach solution test confirms mildew: apply a few drops of household bleach (1:10 dilution) — if the spot lightens within 1–2 minutes, it's mildew; if not, it's dirt or staining. Professional pressure washing with mildewcide ($200–$600 for a typical home) removes existing growth, but repainting with mildew-resistant paint ($40–$60/gallon) is needed if the paint film is degraded. Prevention: trim vegetation 12–18 inches from walls, redirect sprinklers, ensure gutters don't overflow onto siding, and use paint with built-in mildewcide for shaded exposures.
Waarom dit veel voorkomt in Alicante
Salt air and intense UV cause exterior paint to degrade significantly faster than inland Spain — 5–7 year cycles versus 10+ years. Mediterranean-style render and stone facades require breathable silicate or silicone paint systems. Lead paint is common in pre-1980 buildings and requires certified removal.
Who to call
For this problem in Alicante, call a: Schilder
Vind een Schilder in AlicanteSymptoms to look for
- Dark green, gray, or black splotches concentrated on north-facing or shaded walls
- Discoloration that spreads gradually over weeks or months (unlike splatter or staining)
- Spots lighten when dabbed with diluted bleach (the mildew test)
- Musty odor near affected exterior walls, especially after rain
- Paint underneath the mildew appears soft, chalky, or degraded when wiped
Spoeddienst in Alicante
Emergency home services in Alicante are available 24/7 with typical response times of 30–60 minutes. Emergency plumbing and electrical calls cost €50–€120 for the callout plus €30–€55/hour including IVA. Always confirm the provider holds a current certificado de instalador autorizado registered with the GVA.