Facade painting should be scheduled around the application and drying requirements of the selected coating. A sunny forecast on its own is not enough to approve a day of work. The condition of the surface, the access arrangements and the conditions that follow application all matter just as much.
Why the schedule depends on weather
The manufacturer's exterior temperature guide discusses air and surface temperature, humidity and rain. Use the limits for the actual product rather than a generic temperature range. Ask who checks the conditions and how a postponement will be communicated to you.
What limits are typically observed
Most exterior paints are applied between +5 °C and +30 °C, with relative humidity below 80%. After rain or washing, a wall often needs 24-48 hours to dry. Applying to a surface heated by direct sun dries the coating prematurely and weakens its adhesion to the wall.
Why surface temperature differs from air temperature
A south-facing facade in sun becomes far warmer than the air, while a north-facing one stays cold until late in the day. So on the same day one side of a building can be fit to paint and another side is not. This is why a facade is planned side by side rather than as a whole.
What information to prepare
An exterior work brief should carry:
- The building location and photographs of each facade.
- The surface material and any known previous coating.
- Visible cracks, staining and previous repairs.
- Height, obstructions and access arrangements.
- Areas, trim and neighbouring items needing protection.
- The preferred period and the permitted working hours.
Why access is kept separate in the quote
Scaffolding, access equipment and protection can change the scope substantially — sometimes more than preparation does. Their suitability must be assessed by the people responsible for the work. Facade area on its own should never be treated as a complete basis for pricing.
How to plan for reserve days
Reserve days go into a facade schedule from the beginning, because postponement is not the exception. Agree an alternative date and the rule by which work shifts. An inflexible completion promise made before the surface has been inspected only defers the problem.
How to agree inspection and handover
Record the chosen colour and product, any weather-related changes and the completed areas. Ask for the coating's care information. See facade painting for the service, and how to compare a quote for the commercial checklist.
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.
