Damp patch on the wall in Rubí: 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 Rubí
60–350 €
Hygrometer diagnosis.
Contexto local · Rubí
Ground floors near the sea have rising damp.
Rubí grew in two clear waves: the old town and 1960s–70s residential estates, then a second new-build wave between 2000 and 2010 toward Sant Muç and Can Mir. The old town still has pre-2002 electrical installations we upgrade before any other work. The new expansion concentrates semi-detached homes with heat pumps that need yearly servicing. The historic Rubí stream floods mean we always check drainage and non-return pumps in ground-floor flats before closing up a bathroom. Wide streets, easy van access.
- Comarca: Vallès Occidental
- Población: 79.317 hab.
- Parque de vivienda predominante: piso-moderno
- Año medio de construcción: 1978
- Códigos postales: 08191
Crecimiento marcado por torres de los 70 en Les Torres y casas en Can Mir.
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.
¿Prefieres que vayamos nosotros?
Diagnóstico y presupuesto en Rubí normalmente el mismo día.
Pedir presupuesto gratisProblemas relacionados en Rubí
Más sobre Damp, mould and paint
Sources and regulation
- CTE DB-HS 1 — Protección frente a la humedad — Código Técnico de la Edificación