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Damp patch on the wall in Castelldefels: how to identify the cause

Riesgo medio · con precaución

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

    media

    Ground floors and basements.

  • Leak from neighbour or roof

    media

    Ceiling patch that grows with rain.

  • Condensation on cold outer wall

    alta

    Uninsulated corners.

  • Internal plumbing leak

    media

    Patch grows with water use.

Pasos de diagnóstico

  1. 1

    Look at position and shape

    Floor=rising, ceiling=leak, corner=condensation.

  2. 2

    Touch it: wet or just stained?

    Tape clingfilm 24h: drops mean active damp.

  3. 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 Castelldefels

60350

Hygrometer diagnosis.

Contexto local · Castelldefels

Ground floors near the sea have rising damp.

  • 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

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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