Damp and moisture meters
Should limewash, seen beside modern masonry paint, be treated as a verdict on blisters on a cottage front?
No. Limewash beside modern masonry paint is not a verdict on the blisters. Limewash lets vapour through. Many masonry paints let much less through, and blisters where they meet can have more than one cause. The survey saw both coatings and the blisters. It has not tested the build-up of coats, has not decided the paint is trapping the limewash, and has not said either coat should come off. Listing covers the front, and this visit grants no consent to strip it.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Limewash is a thin coat that wears and is renewed. Masonry paint is a later film, often laid over limewash that was not fully removed. A blister is a bubble, and it can be moisture, a weak earlier coat, or salt. Two finishes on one front do not show which layer sits under the blister. No coat was opened and no moisture profile was taken.
Tell the solicitor the blisters were not given a cause, and that the survey does not grant consent to strip a listed front. If the face must be understood, a conservator can advise on the coatings without this report calling for the coatings to be stripped off. The lender has a description of two finishes and of blisters, not a specification. Leave the cottage front as found until listed consent and a proper look at the coats have both been considered.
What should you ask your surveyor?
- Did you see limewash and masonry paint without testing the blisters?
- Have you left the cause of those blisters undecided?
- Does this visit grant consent to strip the cottage front?
What are the typical next steps?
- Do not treat the two coatings as a verdict on the blisters.
- Ask a conservator if the coats need a proper look.
- Tell the solicitor no consent to strip the front was given.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Does a blister always mean water is trapped under the paint?
No. A blister is a bubble. Moisture is one possible cause, and a weak or incompatible coat is another. The survey did not test the build-up. Limewash beside masonry paint shows two finishes. It does not prove a reservoir under the film. The cause on this front stays open.
If some limewash is still bare, is the painted part the problem?
Not as a verdict. Bare limewash and painted masonry can sit on the same cottage for many reasons, including an unfinished coat. The survey did not compare their moisture. The bare part is not a control test. Blisters stay undescribed as to cause.