Timings depend on scope, property type and product, but most projects follow a predictable pattern that is far shorter than people expect.
One of the most common questions before any installation is simply how long the house will be disrupted for. The honest answer is that a single window is often finished before lunch, while a full house of replacement windows and doors is more typically a working week.
This guide sets out realistic ranges by project type, and the factors that push a job towards the longer or shorter end of each range.
| Project type | Typical duration |
|---|---|
| Single window | 2–4 hours |
| Single door | 3–5 hours |
| 4–6 windows | 1–2 days |
| Whole-house windows, 3-bed | 3–4 days |
| Whole-house windows, 4-bed | 4–6 days |
| Large sliding or bifold door | 1–2 days per opening |
| Full house, windows and doors combined | 6–10 days |
On multi-day projects, work is usually planned room by room or elevation by elevation, so that living areas and bedrooms are prioritised to minimise disruption to daily life. Bathrooms and less-used rooms are often scheduled towards the end.
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