Ruby Insulated Garden Room - Siperella (Black)

Imagine stepping out of your back door and walking into a beautiful, fully insulated space designed exactly for your needs. Whether you’re dreaming of a quiet garden office, a home gym, a creative studio, or simply a cozy year-round retreat, our insulated garden rooms are built to make that dream a reality.

A garden room shouldn't just be for summer. We’ve engineered our buildings to keep you warm in the winter and cool in the summer.

Your new space is built with a heavy-duty, pressure-treated timber framework. We wrap the wall panels in a premium Tyvek vapour barrier and insulate them with high-performance Rockwool slabs. This breathable, highly insulated structure ensures your garden room stays bone-dry and perfectly comfortable, no matter what the great British weather throws at it. Natural light floods in through sleek, energy-efficient uPVC windows and doors, keeping the space bright and inviting.

manufactured in the heart of Devon by Ruby, every garden building we create is a testament to traditional British craftsmanship blended with modern engineering. We don't just assemble our buildings; we craft them. All of our timber cladding is machined in-house by our expert joinery team, ensuring unmatched quality control from the very first cut to the final finish.

This specific listing features our Pressure Treated Redwood cladding. A true classic, redwood is a highly weather-resistant and cost-effective choice that offers a beautifully traditional aesthetic while standing up perfectly to the elements. Looking to upgrade? We also offer British Larch, British Cedar, Canadian Cedar, Redwood Thermowood & Siperella Black.

Our design comes with UPVC doors and windows. Need customer design or size? Feel free to get in touch. One of our technical sales team members can draw and model a design suited for you.