Rising Damp Specialist Treatment

Rising Damp Specialist Treatment
Rising damp

Rising Damp Specialist Treatment

Rising damp treatment is for solid walls in UK houses and ground-floor flats where groundwater is travelling up the masonry, usually with a tide mark and salts. It is specified only after a survey confirms that path. Request a quote with the form or WhatsApp.

Rising damp shows as a tide mark and salt-damaged plaster. The repair blocks that path and then lets the wall dry.

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Symptoms

What people notice first

A horizontal tide mark, often under a metre from the floor

Powdery salts and plaster that debonds low on the wall

Skirting and the bottom of door linings that have gone soft

The same line on a solid wall that stays wet in dry weather

What's included

  • Confirmation that the moisture is rising, not condensation
  • A damp proof course suited to the wall
  • Salt-affected plaster removed where it has failed
  • Drying time explained before replastering
  • A written treatment record

What this visit does not do

  • We do not treat rainwater or a plumbing leak as rising damp
  • We do not inject first and ask questions later when a patio is bridging the wall
  • Cavity-wall rain stains are a different job
Method

How the visit runs

Readings and salts have to fit groundwater, and the outside ground, render and paths are checked for a bridge. The damp proof course is then the one that suits that wall, often a chemical course with the plaster cut back. Salt-resistant replastering follows only when the wall is at the drying stage the system needs.

1

Investigate first

We map the stain, take moisture readings, check salts where plaster has blown, and look outside at ground levels, gutters, pointing and the damp proof course line. The damp type is written down before any treatment.

2

Treat the path that is wet

Rising damp, rainwater, condensation, a bridged cavity or a wet cellar each get the repair that closes that path. A damp proof course is used only where groundwater is the cause.

3

Leave a record and a drying time

You get a treatment record and the guarantee that applies to the system installed. Plaster and paint wait until the readings say the wall is ready. Decorating a wet wall brings the mark back.

4
What changes the price

Cost follows wall length, thickness, the finish that has to come off, and whether floors or joinery are in the way.

5
After the visit

Keep soil, paths and render below the new line. Do not gypsum-skim over salt-contaminated plaster. Paint when the record says the wall is dry enough, not when it merely looks pale.

6
What fails if this is skipped

A course that was correctly diagnosed still fails if a new patio, ramp or render bridges it. The usual life of the installation is the term on its guarantee, up to 30 years, if the wall is not bridged again.

Shop injection cream in a wall that has not been diagnosed often treats condensation or a high path. The stain comes back and the plaster is already hacked off.

FAQ

Questions

These are the questions for this job. Wider damp questions sit on the FAQ page.

All FAQs

Groundwater rarely rises much above a metre in normal walls. A stain in the middle of the wall or on a ceiling is a reason to look for rain or a leak instead.

Only if the existing line is missing, broken, or bridged and the readings still show rising moisture after the bridge is cleared. Many walls need the path lowered, not a second injection.

Old plaster holds hygroscopic salts. Those salts pull moisture back to the surface even after the wall is drying. Leaving that plaster in place brings the tide mark back through the paint.

Thick solid brick can take months. The treatment record, not a calendar guess, says when replastering and paint are reasonable.
Coverage

Areas we cover

The same survey runs in these counties, and across the rest of the UK.

See all areas we cover
Next step

Your building, diagnosed before it is treated.

Targeted treatment where groundwater is travelling up through masonry.

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