No. 01
A twenty-year garden room
A garden room should still feel solid, warm and efficient in twenty years' time. That's why every Arden & Oak begins with Structural Insulated Panels — engineered off-site, not improvised on it.
Timber-Frame Engineered Construction
Engineered for decades. Not just for delivery day.
Every Arden & Oak building is constructed using factory-engineered insulated timber-frame construction, delivering exceptional strength, outstanding thermal performance and precision manufacturing that traditional timber framing simply cannot match.
Construction · Pillar 01
Built differently. For good reason.
No. 02
One engineered component
Each insulated panel combines structural strength and high-performance insulation into a single component. Manufactured under factory-controlled conditions, they arrive on site ready to erect — no cutting, no compromises.
No. 03
A quantifiably better building
The result is a building that is stronger, warmer, quieter and significantly more energy efficient than conventional stud wall construction. That difference shows up on your bills — and in how the room feels a decade from now.
Why insulated timber-frame construction
Factory engineered
Every panel is precision manufactured before arriving on site for consistent quality.
Outstanding strength
Structural panels create an exceptionally rigid building designed for UK wind and snow loading.
Exceptional thermal efficiency
Continuous PIR insulation dramatically reduces heat loss throughout the building envelope.
Airtight construction
Factory bonded panels create a continuous insulated shell with minimal air leakage.
Faster installation
Large structural panels allow the weatherproof shell to be erected remarkably quickly.
Built to last
Engineered components reduce movement, shrinkage and long-term maintenance.
Wall construction
What's inside the wall?
Every insulated panel combines two structural OSB skins permanently bonded to a high-performance PIR insulated core. Unlike traditional timber stud walls, insulation is continuous across the panel, significantly reducing thermal bridges while creating an exceptionally strong structural element.
Roof construction
The roof is engineered too.
The roof is constructed using structural insulated roof panels rather than conventional rafters and insulation. This creates one continuous insulated envelope from wall to roof, improving structural rigidity while reducing heat loss and eliminating many of the cold bridges found in traditional roof construction.
Build sequence
Built with precision
- 01Ground screws
- 02Floor insulated panels
- 03Wall insulated panels
- 04Roof insulated panels
- 05Weatherproof envelope
- 06External finishes
- 07Internal fit-out
- 08Ready for decades of use
Specification
Built to a standard.
- 01122 mm timber-frame wall construction
- 0290 mm PIR insulated core (λ 0.022 W/m·K)
- 03Structural OSB skins, factory bonded
- 04Continuous airtight envelope
- 05Designed for full UK structural loading
- 06Zero thermal bridges through the wall plane
Comparison
Why we don't build with traditional timber framing
Traditional timber framing
- Hundreds of individual timber components
- Built entirely on site
- Numerous thermal bridges
- Greater potential for movement
- Variable workmanship
- More difficult to achieve airtightness
Arden & Oak insulated timber-frame construction
- Factory engineered structural panels
- Precision manufactured
- Continuous insulation
- Exceptional rigidity
- Consistent factory quality
- Continuous airtight envelope
Our approach
Why Arden & Oak chooses insulated timber-frame builds
We could build using traditional timber framing.
Instead, we chose Structural Insulated Panels because they deliver a better building.
Every Arden & Oak garden room is engineered to provide outstanding strength, lower running costs, improved comfort and long-term durability — giving you confidence that your investment will perform for decades to come.
Begin
Ready to create your space?
Configure your building online, book a private consultation, or take the full collection home as a brochure. A studio lead replies within two working days.
Continue Learning · Next