3.66m x 3.05m SIP Garden Room Kit
Extra depth SIP shell kit for offices, gyms, studios and multi-use spaces.
Delivery quoted separately
Shell kit only • Extras quoted separately
Built in Small Batches for Better Quality Control
We manufacture SIP kits in controlled batches so each order can be checked properly before supply. Current lead time is confirmed with your fixed-price quotation. Due to the current 10% sale, manufacturing slots may fill faster than usual.
Extra Depth for a More Usable Room
The 3.66m x 3.05m SIP garden room kit gives you a noticeably more practical layout by adding extra depth as well as width. It is ideal for customers who want more freedom with furniture, storage, desk layouts or a room that feels less restricted than narrower garden room sizes.
Built as an insulated SIP shell kit, it gives you a fast, clean route to a strong garden room structure ready for your chosen doors, roof covering, cladding and internal finish.
Why Choose This Size?
Extra depth makes it easier to create a more comfortable, functional setup.
Works well as a home office, hobby room, studio, gym or general garden retreat.
Designed for a quick shell build using the same efficient SIP panel system.
Insulated SIP panels help create a room you can use in every season once finished.
What’s Included
- Pre-cut SIP wall panels
- Pre-cut SIP roof panels
- Pre-cut SIP floor panels
- Structural splines and timber components
- Fixings pack
- DIY-friendly panel layout
Quoted Separately
- External cladding unless selected
- Roof covering unless selected
- Doors and windows unless selected
- Delivery unless quoted
- Base or foundations
- Internal finishes and electrics
Key Details
- External size: 3.66m x 3.05m
- Kit type: Insulated SIP shell kit
- Use: Year-round garden room
- Options: Lite to Premium Plus
- Delivery: Quoted separately based on location
- Lead time: Confirmed with your quote
Tell us your insulation choice and any extras you want and we’ll send you a clear fixed-price quotation with your 10% discount shown.
Claim My 10% Discount →Sale prices available for a limited time. We usually respond within 24 hours.
See How SIP Kits Go Together
We use the same straightforward SIP build system across our kit range. This example shows a real customer build progressing from SIP shell to finished external cladding.
Step 1: First SIP wall panels being stood in position on the prepared base.
Step 2: SIP shell assembled and ready for breather membrane.
Step 3: Breather membrane applied before external cladding.
Step 4: Finished garden room after cladding, trims and glazing.
Popular Optional Extras
The advertised price is for the SIP shell kit. Add the finishing items you need to move from shell to a completed garden room.
EPDM Rubber Roof Kit
Durable, low-maintenance weatherproof roof finish.
External Cladding
Choose the outside finish to suit your style and budget.
Sliding Patio Doors
A popular upgrade for light, access and a modern appearance.
Custom Openings
Large openings, side doors and non-standard layouts can be quoted before manufacture.
Based in Liverpool, we manufacture SIP garden room shell kits using pre-cut insulated panels designed for fast DIY or trade assembly. Every kit is quoted clearly before manufacture, with shell-only pricing and optional extras shown separately.
Secure Your 10% Discount Before the Sale Ends
Tell us your preferred insulation option and any extras you want, and we’ll send you a clear quotation for your 3.66m x 3.05m SIP garden room kit with the current 10% sale discount included.
Claim My 10% Discount →