Condensation on windows: why it appears and how to fix it in Badalona
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 Badalona
0–150 €
Diagnosis or vents.
Contexto local · Badalona
Outdoor winter humidity is high in Badalona.
Badalona mixes a seafront strip with very different working-class neighbourhoods. In Casagemes and Centre we keep early-20th-century buildings with street balconies and original joinery many owners want restored rather than replaced — annual teak oiling is already in the quote. In Llefià and La Salut we deal with dense 1960s–70s blocks whose single-phase panels max out when air-con or an induction hob is added; we recommend a line upgrade first. Sea air rusts hardware and external blinds fast, so we always quote marine-grade cylinders and guides. Beach traffic in summer pushes us to first- or last-slot visits.
- Comarca: Barcelonès
- Población: 223.506 hab.
- Parque de vivienda predominante: piso-moderno
- Año medio de construcción: 1972
- Códigos postales: 08911, 08912, 08913, 08914, 08915, 08916, 08917, 08918, 08930
Tercera ciudad de la metrópolis, con frente marítimo, ensanche del XIX y barrios obreros densos como La Salut y Llefià.
Preguntas frecuentes
Does condensation cause mould?
Yes, if continuous.
Do salt absorbers work?
For a room, insufficient.
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Más sobre Damp, mould and paint
Sources and regulation
- CTE DB-HS 1 — Protección frente a la humedad — Código Técnico de la Edificación