🔥 SUMMER SALE – SAVE 10% ON ALL SIP GARDEN ROOM KITS 🔥 Limited time offer • Prices shown include your 10% discount
6.10m x 3.05m SIP garden room shell kit

6.10m x 3.05m SIP Garden Room Kit

Extra large insulated SIP shell kit for offices, gyms, studios, workshops and multi-use garden rooms.

Fixed price quotes • Liverpool based • No sales pressure

Delivery quoted separately

Was £4,295 + VAT SALE £3,865 + VAT ✔ Save £430 – Limited Time Offer

SIP shell kit only: floor, wall and roof panels, splines, timber and fixings

Ideal where maximum usable space and layout flexibility are needed

Optional EPDM roof kit, cladding, doors and delivery priced separately.

6.10m x 3.05m SIP garden room shell kit

6.10m x 3.05m SIP Garden Room Kit

Extra large insulated SIP shell kit for offices, gyms, studios and multi-use spaces.

Delivery quoted separately

Was £4,295 + VAT SALE £3,865 + VAT ✔ Save £430 – Limited Time Offer

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 Large SIP Garden Room Shell Kit

The 6.10m x 3.05m SIP garden room kit is the largest standard size in the range, designed for customers who need maximum internal space and layout flexibility.

It works well as a large home office, studio, gym, workshop, commercial-style workspace or multi-use garden room. The SIP panel system gives you a strong insulated shell ready for your chosen doors, roof covering, cladding and internal finish.

A strong option for customers who want a large, practical SIP shell without paying for a fully installed garden room.

Why Choose This Size?

Maximum Usable Space

Ideal for customers who need a larger garden room for work, fitness, hobbies or split-use layouts.

Flexible Layout Options

The wider footprint gives more flexibility for desks, gym equipment, storage, seating or partitioned areas.

Insulated SIP Shell

Designed to create a strong, efficient shell ready for year-round use once finished externally and internally.

DIY or Trade Friendly

Suitable for competent DIY customers, builders and trades wanting a practical panel-based build system.

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: 6.10m x 3.05m
  • Kit type: Insulated SIP shell kit
  • Use: Large year-round garden room
  • Options: Lite, Standard, Premium and Premium Plus insulation options
  • Delivery: Quoted separately based on location
  • Lead time: Confirmed with your quote
Ready to claim your 10% discount?

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.

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.

From £1,495 + VAT

External Cladding

Choose the outside finish to suit your style and budget.

From £65 + VAT per m²

Sliding Patio Doors

A popular upgrade for light, access and a modern appearance.

From £1,095 + VAT

Custom Openings

Large openings, side doors and non-standard layouts can be quoted before manufacture.

Quoted to suit

A typical completed external package with roof covering, cladding and doors will cost more than the shell-only price. We will show this clearly in your quote.

Sips & Splines is a trading name of HFI Services Ltd.

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 6.10m x 3.05m SIP garden room kit with the current 10% sale discount included.

Claim My 10% Discount →
No sales pressure No calls unless you ask We usually reply within 24 hours Clear price breakdown
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