In this guide
How is filled weight calculated?
Total load = empty jacuzzi weight + water weight + user load + safety margin. Water weight is calculated as volume (m³) × 1000 kg. Assume 75–90 kg per person for user load.
- Example: 1.2 m³ water ≈ 1200 kg
- 4-person use ≈ +320 kg
- Empty spa shell ≈ 150–350 kg (model dependent)
- Safety margin: at least 15–20%
Terrace / timber deck risks
- Timber frame load capacity may not support a filled jacuzzi.
- On concrete terraces, slope, waterproofing and drainage must also be assessed.
- Structural engineer report is recommended for upper-floor installations.
Information to gather at project stage
| Data | Why needed | Provided by |
|---|---|---|
| Terrace dimensions | Layout plan | Architect / client |
| Floor type | Load calculation | Structural engineer |
| Electrical capacity | Heater + motor | Electrician |
| Delivery route | Shipping plan | Kuntbay logistics |