A useful time estimate requires details of the façade and work. The floor area or the phrase “average-sized house” is not enough to determine the number of days.
An accessible façade with sound paint is a different job from one requiring extensive scraping and cladding replacement. Height, gables, trim and the number of coats also affect planning. This guide covers exterior painting; interior projects are assessed by their own areas and work stages.
The difference between working time and calendar time
Person-hours ÷ number of painters ÷ working hours per day gives a simplified working-time calculation. It does not tell you when a coat can be repainted or when the next dry painting day will arrive.
Illustration assuming 80 person-hours and eight working hours per person per day:
| Team size in the example | Calculated working days | What the calculation assumes |
|---|---|---|
| One painter | 10 | The same workload is spread over ten days |
| Two painters | 5 | Both can work on the tasks at the same time |
| Four painters | 2,5 | All work can be divided without constraints — a simplification |
The table is not an NLL time standard. Waiting, access and tasks that must follow one another mean the calendar schedule needs a separate assessment.







