Condensation on windows: why it appears and how to fix it in El Prat de Llobregat
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 El Prat de Llobregat
0–150 €
Diagnosis or vents.
Contexto local · El Prat de Llobregat
Outdoor winter humidity is high in El Prat de Llobregat.
El Prat de Llobregat is heavily shaped by the airport and the industrial belt: 1960s–80s blocks in Centre and Sant Cosme with poor sound insulation drive demand for sound-rated double-glazed joinery. The delta location worsens rising damp in ground-floor flats, so our paint jobs usually include a waterproofing render layer first. There's also a 1990s villa strip in La Seda where garden and blind maintenance is recurring work. Van access is excellent and parking is free on most streets outside the centre.
- Comarca: Baix Llobregat
- Población: 65.840 hab.
- Parque de vivienda predominante: piso-moderno
- Año medio de construcción: 1978
- Códigos postales: 08820
Junto al aeropuerto, con casco urbano denso y nuevas promociones en Sant Cosme y Eixample-Front Marítim.
Preguntas frecuentes
Does condensation cause mould?
Yes, if continuous.
Do salt absorbers work?
For a room, insufficient.
¿Prefieres que vayamos nosotros?
Diagnóstico y presupuesto en El Prat de Llobregat normalmente el mismo día.
Pedir presupuesto gratisProblemas relacionados en El Prat de Llobregat
Más sobre Damp, mould and paint
Sources and regulation
- CTE DB-HS 1 — Protección frente a la humedad — Código Técnico de la Edificación