Hollow or detached plaster
Loss of adhesion can follow prolonged damp, salts, incompatible backgrounds or poor preparation.
What a useful investigation should establish.
A proposal is more useful when it explains the likely cause, the evidence, the affected construction and why a particular repair is being considered.
- Confirm that the active moisture source has been repaired or is being managed by the specified system.
- Identify plaster type, adhesion, salt contamination, wall construction and previous coatings.
- Agree removal height, junction details, beads, reinforcement and interfaces with retained finishes.
- Select a plaster or render system compatible with the substrate, moisture conditions and required finish.
Options, not assumptions01 02 03 04
How the repair may be approached.
Controlled removal and preparation
Remove only the agreed defective or contaminated material, protect adjoining areas and prepare the masonry without unnecessary damage.
Salt-aware base system
A suitable base coat, renovating plaster or membrane-backed approach may be specified according to the damp treatment.
Compatible finish coat
Finish materials, thicknesses and curing should follow the selected system and background requirements.
Drying and decoration guidance
Ventilation, heating and vapour-permeable initial decoration may be recommended while residual moisture dissipates.
Important limitation
New plaster will not stop an unresolved leak or condensation problem. Dense systems may be inappropriate for some traditional walls, while very permeable finishes may not manage heavy residual salts. The specification must follow the diagnosis and substrate.
