All our buildings are architecturally designed and built to the highest standards, complying with appropriate Building Regulations. We always strive to use the best, sustainably sourced, eco-friendly materials wherever possible and to reduce our carbon footprint as much as we can. Our finished product has a very low U-value (which is good!). Below is a summary of some of the standard materials we use in our builds: 


The cost of the foundation is included in our price – we just ask that you ensure the ground is clear of debris (trees, bushes etc). We typically use mini alloy pilings, concrete pads and/or German engineered ground screws for sloping ground and flood plain terrain. The building does not rest on the ground and is slightly raised, so there is a vented space underneath which prevents rising damp.

Roof, Walls, Floors & Interiors 

As your buildings are intended to be used all year round, they need to be as thermally efficient as possible, even in extreme weather. As a result, we use SIPS (roof, walls and floors). Structural Insulated Panels (SIPs), from which we have derived part of our name, are a modern composite building material; they are one of the most advanced building systems currently on the market. They exceed building regulations, are incredibly strong, insulating and cost-effective as well as environmentally friendly; they also enable fast build time frames, generally not possible with traditional building methods.

SIPs combine several components of traditional building, such as studs and joists, insulation, vapour and air barrier. They can be used for many different applications such as wall, roof, floor and foundation systems. Our market leading SIPS panel Supplier is able to manufacture panels to virtually any specification, from small garden rooms to complete houses and commercial developments, like classrooms and offices. We work very closely with our Supplier and, for the larger bespoke requirements, integrate their specialist knowledge throughout the build, from pre-build site inspection to the final sign off by the building inspector.  

Our consultative, turn-key process includes liaising with all other on and off site professionals – the design consultant, the architect, the engineer, the project manager and local authority Planning and Building Control to name a few – this ensures a smooth building process from start to finish. Our buildings are also fitted, as standard, with solid, engineered oak flooring (and skirting), internal plaster board, which is skim plastered and painted with white emulsion – unless you require otherwise; we would discuss this with you during the early stages of Our Process. We can tailor the finish to suit your particular requirements and also install the internal ironmongery and floor coverings of your choice. 

  • 125-175mm SIPs (can go up to 245mm)
  • U’ – Value Roof: 0.11 W/M2K
  • U’ – Value Wall: 0.15 W/M2K
  • U’ – Value Floor: 0.15 W/M2K
  • External Western Red Cedar Timber Cladding, sustainably sourced. (FSC & PEFC certified)
  • Timber Cladding (Spruce) with a 50 year warranty against rot and microbial infestation (a first for this industry)
  • Overall construction is 70% recycled materials
  • High-performance air-tight construction (Reflective Foil Membranes and Aluminium Tape)
  • 100 – 175mm SIPs (can go up to 245mm)