Affordable Self-Build Garden Rooms

Discover the Ultimate in DIY Garden Rooms with Penthouse Kits- Designed for Fast, Easy Assembly Without Compromising on Quality.

Each Kit is Precision Made in the UK and Features Maintenance Free Cladding, High Performance Insulation and Double Glazed Windows & Doors.

With Flexible Layouts, Custom Sizing and Patented Pre-Wired Panels you Can Build a Warm Stylish & Energy-Efficient Space in Just a Few Days.

Backed by a 10 Year Guarantee it's the Smarter Way to Create Your Perfect Garden Office, Studio or Retreat to Suit your Space & Budget.

Why Choose Us for Your Garden Room Project

  • Pick a garden room kit that suits your budget—Premium, Mid-Range, or Budget-Friendly options available.

  • Every component arrives ready to assemble, with zero waste or guesswork.

  • No need to paint or clad—enjoy a sleek, finished garden building from day one.

  • Maximise your garden space with smart designs that fit tight plots or corners.

  • Enjoy a clean, modern interior with hidden cabling for a seamless look.

  • Achieve a smooth, architectural finish you'll be proud to show off.

  • Get everything you need in one shipment—delivered across the UK.

  • Engineered for strength and longevity, giving you peace of mind.

  • From the first screw to the final finish, our expert team is with you every step of the way.

PREMIUM Structure

Signature SIP'S

High-Performance SIPs: Energy-Efficient, Durable Construction

Structural Insulated Panels (SIPs) offer superior insulation, strength, and long-term durability—perfect for an energy-efficient garden room or modern outdoor building.

SIPs ensure year-round comfort, reduced energy costs, and minimal maintenance.

With faster, cleaner installation, this future-proof building method delivers lasting quality and reflects our commitment to smart, reliable construction.


SIP's

  • The floor, walls and roof are constructed using structurally insulated panels (SIPs)
  • Offer highly efficient thermal values and exceptional strength.
  • The sealed panels make studios warm in the winter and cool in the summer
  • Provide good sound-proofing.

WALLS

  • Walls with 70mm EPS insulation
  • Secure fixings anywhere on the interior walls


FLOOR

  • Double joists every 600mm – one of the sturdiest garden room floors on the market
  • Gyms, workshops, or other high-impact uses
  • 305.91 to 382.39 kg/m²
  • 100mm EPS, offering excellent thermal and acoustic performance

ROOF

  • Durable EPDM rubber roofing – fully weather-resistant
  • Guttering and down pipe for efficient drainage
  • 100mm EPS for year-round comfort

ELECTRICS

  • Hidden internal electrical channelling
  • Complete electrical pack for easy setup

CLADDING

  • ToughWood™-Maintenance-free Composite cladding
  • Resistant to to mould, fungus, cracking, chipping, buckling, peeling, water & moisture
  • Built to last and look great for years with zero upkeep

BENIFITS

  • 50 year life expectancy
  • 15 size configurations available
  • Modern finish & hardwearing internal wood panelling
  • 10+ year guarantee
  • 1-3 days build time

Whether you're creating a home office, gym or creative space, the Signature SIP's room delivers long-lasting quality backed by a 10-year guarantee.

START YOUR DESIGN

MID-RANGE Structure

TOUGH FRAME PRO

ToughFrame Pro: Affordable, Insulated Garden Room

The ToughFrame Pro Garden Room offers a cost-effective, durable solution for adding extra space to your property.

Ideal for use as a home office, gym, or retreat.

Built with a strong timber frame and full insulation in the walls, floor, and roof, it's perfect for year-round use in any weather.

WALLS

  • 60mm PIR insulation in walls

FLOOR

  • Double joists every 600mm this is one of the sturdiest garden rooms available!
  • Great for gyms, workshops and everything in-between.
  • Pressure treated floor beams
  • Foor load capacity
    305.91 to 382.39 kg/m²

ROOF

  • The roof is a durable & weather resistant EPDM rubber roof without seams or joins
  • Guttering and a down pipe are also included.

CLADDING

  • Maintenance free ToughWood™ cladding
  • Mould & fungal resistant
  • Resists cracking, chipping, buckling, peeling & more
  • Water & moisture resistant

EPS Insulation

  • Providing excellent thermal and acoustic insulation
  • 100mm insulation in floor & ceiling

START YOUR DESIGN

BUDGET STRUCTURE

Tough Frame

ToughFrame Garden Room: Our Most Budget-Friendly, Customisable Garden Building Kit

Delivered as a high-quality structural shell with durable timber framing and weather-resistant composite cladding.

Ideal for DIY garden offices, studios, or hobby spaces, Supplied without insulation or interior finishes, giving you the flexibility to add your own materials

FLOOR

  • Double joists every 600mm this is one of the sturdiest garden rooms available!
  • Great for gyms, workshops and everything in-between.
  • Foor load capacity
    305.91 to 382.39 kg/m²
  • Pressure treated floor beams

ROOF

  • The roof is a durable & weather resistant EPDM rubber roof without seams or joins.
  • Guttering and a down pipe are also included.

CLADDING

  • Maintenance free ToughWood™ cladding
  • Mould & fungal resistant
  • Resists cracking, chipping, buckling, peeling & more
  • Water & moisture resistant

BENEFITS

  • Our most affordable model
  • 50 year life expectancy
  • 15 size configurations available
  • 10+ year guarantee
  • All materials are FSC or SFI approved
  • 4-5 days build time
  • 3 weeks to manufacture

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