Damp patch on the wall in El Prat de Llobregat: how to identify the cause
Resumen rápido
Shape and location tell you if it's rising damp, condensation or a leak.
¿Qué está pasando?
Each type of damp has a different cause and fix.
Causas más probables
Rising damp from ground
mediaGround floors and basements.
Leak from neighbour or roof
mediaCeiling patch that grows with rain.
Condensation on cold outer wall
altaUninsulated corners.
Internal plumbing leak
mediaPatch grows with water use.
Pasos de diagnóstico
- 1
Look at position and shape
Floor=rising, ceiling=leak, corner=condensation.
- 2
Touch it: wet or just stained?
Tape clingfilm 24h: drops mean active damp.
- 3
Document with dated photos
Dated photos are your evidence.
Cuándo llamar a un profesional
Call for diagnosis if active or growing.
Coste orientativo en El Prat de Llobregat
60–350 €
Hygrometer diagnosis.
Contexto local · El Prat de Llobregat
Ground floors near the sea have rising damp.
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
Who pays if it's the upstairs neighbour?
Their insurance or the community.
Can I just paint over it?
Only if completely dry and fixed.
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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