Define the lime wall restoration work
The work may be a small repair, a wall exposed during refurbishment or a larger restoration. Each needs a clear boundary between retained plaster and new material. Sound existing fabric should be considered before assuming the wall must be stripped back throughout.
Assess masonry, coatings and moisture history
Assess the masonry, coatings, previous repairs and moisture history together. Different-looking patches do not automatically tell you what should be removed. An appropriate material choice depends on the actual construction; the aim is a compatible surface rather than a generic treatment for every old wall.
Agree retained plaster and new coat build-up
Agree the extent of preparation and the plaster build-up. Junctions with retained material, window reveals and adjoining features need attention alongside the main surface. Where the wall has loose areas, establish their condition and cause before selecting the finishing scope.
Further guidance: SPAB guidance on compatible plaster repairs.
Plan curing and compatible decoration
Curing and decoration should follow the specified material and site conditions. Avoid applying a universal drying period or paint choice to every lime job. A compatible decorative finish is part of completing the surface, so discuss it before the plaster work is priced.
Prepare the lime wall plastering scope
Provide photos of whole walls and affected details, any known material history and relevant survey advice. If ceilings are part of the same room project, include them separately. The quote should identify preparation, retained areas, new plaster and finishing responsibilities.
PRACTICAL SERVICE DETAILS
Common questions
Can sound old lime plaster remain?
Retention is worth considering where the material is sound and compatible with the proposed repair. Assessment should establish the boundary rather than age alone.
How are incompatible past repairs assessed?
Their material, attachment and relationship to the surrounding construction need consideration. Removal should be justified by condition and compatibility, not simply appearance.
Can lime plaster be used for a small patch?
Yes, a local compatible repair may be appropriate. Matching the existing construction and finish still matters even when the area is small.
What decoration is suitable afterwards?
Use a finish suited to the plaster and building, following the relevant material guidance. Confirm curing and readiness before decoration begins.
