Salt-Resistant Replastering

Salt-Resistant Replastering
Rising damp

Salt-Resistant Replastering

Salt-resistant replastering replaces salt-laden plaster on UK walls after damp treatment, so hygroscopic salts do not bring the tide mark back through new paint. It follows a rising-damp repair once the wall is ready to take a coat. Request a quote with the form or WhatsApp.

Salts left in old plaster pull moisture back to the surface. The new coat has to resist those salts, or the stain returns.

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Symptoms

What people notice first

Paint that stains again in a tide line after a damp repair

Powder on the surface of plaster low on the wall

A new skim that has debonded over old salt-laden plaster

What's included

  • Failed salt-laden plaster removed
  • Wall left to the drying stage the system needs
  • Salt-resistant backing coat
  • A finish ready for decoration once dry
  • Timing for paint explained in writing

What this visit does not do

  • We do not gypsum-skim over contaminated plaster
  • We do not replaster a wall that is still being wetted by a leak or by rain
  • This is not a decorative plastering service for dry rooms
Method

How the visit runs

Failed plaster is removed to the height the salts reach, not just the flaky patch. The wall is left to the drying stage the system needs. A salt-resistant backing goes on, then a finish that can take paint once it is dry. The timing for paint is written down.

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

Area of plaster, ceiling height, and how long the wall needs to dry before the finish coat all change the quote.

5
After the visit

No vinyl or “damp” paint in the early drying period. Those films trap moisture and the salt line returns in the new coat.

6
What fails if this is skipped

If the salts are left in place, the stain is often back within a heating season even when the damp proof course was sound. Replacing that plaster is what makes the course visible as a dry wall.

Stain-block and ordinary multifinish over salty plaster fail. The salts are still in the wall.

FAQ

Questions

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

All FAQs

To the salt line, which is often higher than the soft area you can see. Stopping short leaves a band that marks the new paint.

Not the same day. The backing and the wall need the drying time in the record. Early emulsion, especially vinyl, blisters.

No. Ordinary gypsum skim is for dry, sound backgrounds. Salt-resistant backing is for walls that have had rising damp or a long wet period.

If a leak or rain is still arriving, replastering waits. A new coat on a wet wall fails, salt-resistant or not.
Related

Other services

Rising Damp Specialist Treatment
Chemical Damp Proof Course
Expert Damp Surveys & Diagnosis
Penetrating Damp Solutions
Coverage

Areas we cover

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

Greater London Greater Manchester Kent Devon Cardiff Edinburgh
See all areas we cover
Next step

Your building, diagnosed before it is treated.

Replaster after damp treatment so hygroscopic salts do not spoil the new finish.

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