SIP Range
Alder
Extended L-shape for larger corner plots — multiple zones and a footprint optimised for character sites.
Alder wraps around a corner plot, turning an awkward garden shape into an advantage. The L-form naturally creates two zones - work and relax, or studio and storage - under one eco-friendly roof.
- Roof type
- L-shaped
- Footprint
- Multiple sizes
- Floor area
- from 18.9 m²
- Best for
- Corner plots, dual-purpose office and gym, character gardens
Available sizes
- From 6.3m × 3m18.9 m²
- Larger sizes to orderon request
Every size can be tailored, and we build fully bespoke to your site and brief.
Key features
- Extended L-shaped plan
- Two distinct internal zones
- Corner plot optimised
- Eco-friendly ground screw foundations
- Eco-friendly roof options and responsibly sourced materials
- Full electrical package, lighting and heating options
Technical specification
Wall U-value
0.34 W/m²K
Exceeds Building Regulations
Roof U-value
0.26 W/m²K
Superior thermal performance
Panel thickness
97mm / 122mm
High-performance insulated core
Compliance
Part L compliant
UK Building Regulations
Air tightness
< 1 m³/hr/m²
At 50 Pascals
Installation
2–5 days
Professionally installed on site
Other designs in the range
Hazel
Mono-pitchCompact mono-pitch design, perfect for home offices and small studios. Clean lines with a contemporary aesthetic.
Birch
Duo-pitchExtended duo-pitch annexe with full self-contained living potential — multiple internal rooms.
Willow
Mono-pitchWide mono-pitch with side entry. Perfect for art studios or yoga spaces — optimised for natural light.
Start your project