Wall preparation should answer the actual condition of the surface, not a habitual sequence of steps. Before colour is discussed, establish what is sound, what needs repair and whether there is unresolved moisture. The same preparation package does not suit every room, and pricing one as if it did hides the real work.
How to record the starting condition
Photograph the whole wall, then take closer views of cracks, old patches, glossy areas and peeling. Explain any earlier leak or repair. Ask the painter to name local filling and broader levelling separately: they are different volumes of work and they belong on separate lines of the quote.
In what order preparation runs
The sequence should be precise enough that the end of each stage can be checked:
- Clearing access and protecting furniture and flooring.
- Finding unstable coatings and the right method of removal.
- Resolving the cause of recurring damage before cosmetic work.
- Repairs, dust control and a compatible primer.
- Observing the drying interval stated for each product.
- Inspecting the finished substrate before painting.
How the soundness of old paint is tested
An unsound coating cannot hold the weight of a new layer and comes away with it. Soundness is checked simply: a hand drawn across the surface, an inspection of the edges and, where needed, an adhesive tape test on a small area. If the coating lifts with the tape, it needs removing or a specialist primer before repainting.
Why dust is planned separately
Sanding leaves a fine dust that travels through the flat and settles on new coatings as readily as on floors. The work area is isolated, extraction is used and the space is ventilated. In older buildings care matters more still — the risks of old lead-bearing paint are described in this EPA material.
What conditions preparation needs
Most fillers and primers are applied between +5 °C and +30 °C, with humidity below 80%. Finishing filler goes on in thin passes of about 1 mm and is then sanded with 120-180 grit paper. After priming, paint usually follows 2-4 hours later; the technical data sheet sets the exact interval for the product in use.
Why the wall is checked before it is covered
Preparation is the one stage that stops being visible once painting starts — and it is the stage that decides the result. Ask to inspect the repaired areas before the first coat. Direct a light along the wall rather than at it: that reveals the ridges and unfinished edges which straight-on lighting hides.
Questions for the painter
Who is responsible for protection and clearing up? Which repairs are included in the price? How will an unexpected problem be assessed? How long must the prepared surface dry? Put the answers into the work description and connect them to the painting quote. For the primer decision, see when primer is needed; for the service itself, see surface preparation and putty.
This general guide was prepared with AI assistance. Technical sources are linked in the text; the specific product instructions and an assessment of the property take precedence over general examples.