Garden Room Design, Build & Specifications
We take great pride in how our garden rooms are designed and built. On this page, we share the finer details — from materials and construction methods to insulation, finishes, and performance — so you can understand exactly what goes into a Backyard Cabin.
Whether you’re considering a garden office, studio, or bespoke outdoor space, this information will help you make a confident, informed decision.
Discover the details behind how our garden rooms are designed and built. This section explains every key element of our cabin construction — from foundations and structure to insulation, finishes, and optional extras — so you can understand exactly what sets a Backyard Cabin apart.
Each decision is made with durability, comfort, and long-term performance in mind, ensuring your garden room is built to a consistently high standard.
Garden Room Construction & Specifications
FOUNDATIONS
For a solid and long-lasting base, we recommend installing a concrete slab foundation prior to installation.
For a more environmentally friendly alternative, we also offer ground screw foundations, which provide excellent structural support with minimal ground disturbance. Pricing available on request.
STRUCTURE
All of our cabins are constructed using Structural Insulated Panels (SIPs) for the complete frame.
SIPs are renowned for their strength and stability while offering a highly energy-efficient building system. This construction method ensures your garden room is robust, precise, and built for long-term performance.
INSULATION
The SIPs panels used in our cabins provide exceptional thermal performance, outperforming many traditional and off-site manufactured building systems.
This ensures your garden room remains comfortable and well-insulated throughout the year, whatever the season.
ROOF
Each cabin is protected with a durable EPDM rubber membrane roof.
This seamless, joint-free roofing system eliminates common weak points, significantly reducing the risk of leaks and ensuring long-lasting weather protection.
INTERNAL FINISH
Internally, cabins are finished with plaster and painted in matte white, creating a clean, bright, and welcoming space.
For a more natural or industrial aesthetic, the OSB panels can be left exposed, offering a warm, rustic finish.
LIGHTING
Low-level LED downlights illuminate both the interior and porch areas of the cabin. Lighting is controlled via a convenient two-way switch, allowing easy operation from inside and out.
CLADDING
Our garden rooms are finished with high-quality Thermowood or European Larch cladding, both valued for their durability, warm tones, and distinctive grain.
For a more contemporary look, we also offer a matte black cladding finish or an accelerator treatment for enhanced ageing
FLOORING
The insulated floor is finished with a hard-wearing OSB subfloor, ready to accept your chosen final flooring.
A range of flooring options is available as optional extras, allowing you to tailor the interior to your intended use. Pricing available on request.
GLAZING
Our cabins feature slimline, matte black powder coated aluminium sliding doors.
The minimalist frames create a seamless connection between indoor and outdoor spaces, allowing natural light to flood the interior and enhancing the overall sense of space.
ELECTRICS
Each cabin includes:
Four double plug sockets
Concealed internal cabling
A dedicated consumer unit
Internal and external spotlights
This setup is ready for connection by your electrician, ensuring a safe and practical electrical installation.
WATERPOOFING
The entire cabin is wrapped in a UV-stable, breathable membrane, fully sealed at all joins. This system protects the structure from moisture ingress while allowing the building to breathe, keeping the cabin dry and well-protected.
WARRANTY
All Backyard Cabins come with a 10-year warranty, giving you confidence in the quality, materials, and workmanship of your garden room.
EXTRAS
Enhance and personalise your garden room with a wide range of optional extras, including:
integral built-in blinds for bifold doors and sliding doors - Electric app-controlled heater - air-conditioning unit - LVT or gym matt flooring with shallow skirting - front decking - custom colour doorframes - wifi internet - ground screw installation - concrete slab foundations - additional windows - built-in storage - kitchen units - partition walls - soundproofing options
Personalise your cabin to suit your unique preferences and needs.
High-Performance, Low-Maintenance Cladding
Designed to Last, Naturally
Our cladding system is designed to deliver exceptional performance with minimal maintenance. Thanks to a ventilated installation method, it does not require surface treatment to perform effectively in any climate.
When left untreated, the timber naturally weathers over time, developing a soft silver-grey patina that enhances its character while maintaining durability.
Proven Performance in All Climates
This cladding system is proven to perform reliably even in challenging environmental conditions. It remains stable and consistent, showing minimal reaction to changes in humidity or temperature.
As a result, your garden room maintains its appearance and structural integrity year after year, whatever the weather.
Sustainable Forests
We use Nordic PEFC-certified timber, sourced from responsibly managed forests that meet internationally recognised sustainability standards.
All wood is carefully selected for strength, stability, and durability, ensuring long-lasting performance while supporting sustainable forestry practices. This approach allows us to create high-quality garden rooms with a reduced environmental impact.
Make a Statement
Ready to create a garden room that’s designed around your space and lifestyle?
Get in touch with our team to discuss your project and explore your options.