New plaster applied to wall

How to Repair Rising Damp

July 17, 20252 min read

Season of Mist How to Repair Rising Damp in Your House: A Step-By-Step Guide

What Is Rising Damp?

Rising damp isn’t just a surface issue – it happens when ground moisture rises up your walls, it can damage the paint, plaster and even the structure of your property. If you see peeling paint, smell that mustiness or see those tide marks around the walls, you probably have this problem.

Wall with rising damp

Most Frequent Signs of Rising Damp

  • Staining on Walls and Tide marks

  • Peeling paint or wallpaper

  • Salts/white powder on the surface

  • Black mould near skirting boards

  • Musty odours indoors

Damp proofing to stop the harm and restore your house’s value.

Step by Step Guide: How to treat Rising Damp

Identify the Problem

Use for indicative moisture screening of lower part of interior walls to a height of 1 meter. Always have a professional damp survey to determine the real cause.

Key words: damp survey, wall damp, internal damp check

Strip Away Damaged Materials

Remove all plaster, wall paper and paint affected. That is to allow the surface to dry a little and make it ready to be damp treated.

Key words: plaster moisture, moisture damage, wall restoration

Apply Damp Proofing Injection

This is the most usual professional correction. Here’s what happens:

Drill holes in mortar line

1-44 Injection with chemical damp proof cream (left)

which acts as a new moisture barrier in the wall

This remedy is a permanent one and serves to be the best for the walls of brick or stone.

Tags: damp proof injection, rising damp fix, chemical DPC

Replaster and Redecorate

After the wall is fully dry:

New plaster applied to wall
  1. Replaster with a salt-resistant mixture

  2. Let it dry for 1–2 weeks

  3. Dress up with breathable materials such as lime wash paint

    Key words: replaster after damp, paint over damp wall

  4. Prevent Future Damp

  5. Keep ground level below DPC

  6. Clean gutters and downpipes

  7. Ensure outside walls are sealed

  8. Book regular property damp surveys

Key words: Moisture prevention measures, Housing construction, Dampness, Housing quality

DIY vs Professional Treatment

DIY remedies may bring temporary relief, but professional treatment will yield long-term results. Here at Kennedy Damp Proofing Ltd, we:

Offer guaranteed results

Use industry-leading damp proof products

Deliver expert damp surveys throughout Sussex

Call or email to book a free consultation!

Areas We Cover

We proudly serve:

  • Brighton

  • Hassocks

  • Burgess Hill

  • Surrounding Sussex areas

Keywords: Rising damp Brighton- Damp proofing Hassocks- Damp survey Burgess Hill

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