Shell kit
20×12 ft SIP shell — 25 panels · £2,575
External plan 6.10 × 3.66 m (about 22.3 m²). Wall height 2.44 m. Headline pack in SIP122 EPS at £103 per panel. Walls + roof SIP panels only — not a finished garden room.
| Kit label | 20×12 ft |
|---|---|
| External plan | 6.10 × 3.66 m |
| Plan area | About 22.3 m² |
| Wall SIP panels | 16 |
| Roof SIP panels | 9 |
| Total SIP panels | 25 |
| Headline core | SIP122 EPS @ £103 |
| Pack price | £2,575 SIP122 EPS |
Other cores: same 25 panels × £88 / £110 / £128 / £142 / £169. Confirm on quote. Openings are cut on site. Cladding, windows, EPDM, floor, splines and install are extras.
In the shell
- 25 × 1220 × 2440 mm SIP panels (walls + roof)
- Counted on the 1.22 m module
Not in the shell
- Floor pack
- Windows, doors, bi-folds
- Cladding, EPDM / metal roof covering
- Splines, fixings, sealant
- Drawings, structural calcs, building control
- Install / fitting
- Ground screws (quoted separately)
- Carriage
Full inclusions list: shell kit inclusions. Openings: openings on site. All sizes: sizes hub · all kits.