Future Rooms’ DIY garden-room kits arrive as precision-cut SIP panels that slot together in a matter of hours, creating an airtight, highly insulated shell backed by a ten-year guarantee. Two specifications keep choices simple:Premier kits use 122 mm panels for maximum thermal performance, while Classic kits employ 97 mm panels for a more economical build; both are suited to year-round use.
Each kit is sold in two build stages—Shell or Complete—so you decide how much finishing work to take on. Standard packs include fixings, drawings and video instructions, and you can upgrade cladding, glazing and doors to match your style. The result is a strong, energy-efficient extra room that confident DIYers can erect quickly without the disruption of a traditional extension.