Condensation on windows: why it appears and how to fix it in Castelldefels
Resumen rápido
Condensation is indoor air water cooling on the cold glass.
¿Qué está pasando?
The air in the room has too much humidity.
Causas más probables
Lack of ventilation
altaSealed flats without airing trap vapour.
Cold window, no thermal break
altaOld aluminium or single glazing.
Drying laundry indoors
altaOne load releases 2–3 L of water.
Poorly set heating
mediaHigh temp + closed windows.
Pasos de diagnóstico
- 1
Air the rooms for 10 minutes
Open opposite windows.
- 2
Wipe the glass and measure humidity
A hygrometer costs €8–15.
- 3
Cover pots and use the extractor
Cooking uncovered releases litres of vapour.
- 4
Dry laundry outside or with window open
If not, a dehumidifier.
Cuándo llamar a un profesional
If it persists with low humidity, check the carpentry.
Coste orientativo en Castelldefels
0–150 €
Diagnosis or vents.
Contexto local · Castelldefels
Outdoor winter humidity is high in Castelldefels.
Castelldefels mixes a seafront strip of villas and holiday flats with a dense town centre below the castle. Salt air is our worst enemy: in under five years it corrodes untreated aluminium blinds, lock cylinders and ironwork, so we always quote marine-grade parts. Second homes drive a lot of between-season work: deep cleans, AC and blind check-ups after winter, and discreet repairs during holiday lets. Up in Bellamar and Montemar we service villas with pools and heat pumps. The N-340 and C-32 jam early, so we keep first slots for nearby clients.
- Comarca: Baix Llobregat
- Población: 67.999 hab.
- Parque de vivienda predominante: unifamiliar
- Año medio de construcción: 1987
- Códigos postales: 08860
Predominio de chalets y unifamiliares en Bellamar y Montemar, con bloques modernos en Centre y Vista Alegre.
Preguntas frecuentes
Does condensation cause mould?
Yes, if continuous.
Do salt absorbers work?
For a room, insufficient.
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Diagnóstico y presupuesto en Castelldefels normalmente el mismo día.
Pedir presupuesto gratisProblemas relacionados en Castelldefels
Más sobre Damp, mould and paint
Sources and regulation
- CTE DB-HS 1 — Protección frente a la humedad — Código Técnico de la Edificación