Extend Composite Garden Rooms
Extend Composite Garden Rooms
The Extend Garden Room - complete with a stylish and practical design featuring a 0.5m roof canopy that runs along the full front, creating a comfortable link between indoor and outdoor living.
Our Extend composite and timber garden rooms are constructed using extra heavy-duty wall and floor timbers for exceptional strength and durability. Fully insulated walls, roof, and floor are complemented by a waterproof vapour barrier wrap and breathable wall membranes, ensuring excellent thermal performance and a dry, condensation-free interior.
Internally, the garden room walls and ceiling is professionally plaster boarded and plastered inside just like a new house. The floor is finished with industrial-grade tongue-and-groove timber flooring. This is completed with durable laminate flooring and matching skirting boards, creating a practical yet refined interior finish.
Each Extend Garden Room is supplied with a dark grey (anthracite) PVCu 2.4m sliding door section and a wide-opening window. Double glazing and insurance-approved locking systems are included as standard, delivering security, natural light, and ease of access.
Every garden room includes a complete electrics package as standard, featuring a consumer unit, four double electrical sockets, an LED light panel, and a light switch - ready for immediate use as a workspace, studio, or relaxation area.
Choose from a range of sizes and external cladding options, including Smoothgrain and ProClad Woodgrain composite cladding, or Thermowood and Western Red Cedar timber cladding. Please Note: Some images may show options not included as standard.
For more information, please view our garden room specifications or download our Extend garden rooms PDF price list.
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SPECIAL OFFER!! - ENDS 30th SEPTEMBER 2026
SIX FREE UPGRADES - 1: Composite Decking. 2: Acoustic Insulation. 3: 1.5Kw White Glass Panel Heater. 4: External LED Lights. 5: Aluminium Sockets & Switches. 6: 100 Litre Water Butt.
The next available installation date is currently 5th October 2026. Secure your installation date with only a £250.00 deposit *.