The home of high-quality garden rooms

Composite Garden Rooms

Book a consultation for your Composite Garden room today.

Our Composite Garden Rooms are very attractive, sustainable, and have exceptional appeal. With multiple colours and styles available, each of our composite outhouses provides an elegant look to any garden.

  • Turn Key Composite Garden Rooms.
  • Foundations & Installation included.
  • The best looking composite garden rooms.
  • Available in multiple sizes & styles.
  • No external maintenance is required.
  • Fast build time.
  • Variety of style choices.
  • Thickest wall insulation (structurally insulated panels).


£13,600 plus VAT

*Prices may vary based on irregular conditions, such as clearance of old foundations, or removal of an existing structure.

Better than I expected

March 12, 2024

Wasn’t sure about composite cladding but I love how natural it looks in my garden. Thanks guys for the great job

Eric Nole

Luxurious and exactly what I wanted for my family to enjoy.

March 12, 2024

Impressed by the attention to detail in my custom build. The room features beautiful hardwood flooring, gorgeous anthracite bi-folds and stylish pendant lighting. Nothing less than a luxurious extension to my garden space.

Brian Clifton

We can build Composite Garden Rooms to any size you require.

Included as Standard

    • Foundations & Installation
    • Plastered & Painted Walls
    • Skirting Board
    • 100mm Premium Insulation
    • Laminate Flooring (15+ Colour Choices)
    • Double Glazed French or Sliding Doors (Black, White or Grey) 

Heating & Electrics

  • Internal Sockets
  • LED Ceiling Lights
  • External Wall Lights
  • Wall-hung or Freestanding Heater
  • External Socket

Optional Extras

  • Bi-folding doors
  • Underfloor Heating (Wi-Fi Controlled)
  • Air Conditioning
  • Additional Sockets (Internal & External)
  • Additional External Lights (Wall Mounted or Spot Light)
  • Additional Windows
  • External Decking
  • Wall Mounted Radiator
  • Partition Walls
Contact us and request a quote.

When you are happy with the design, we can create an order form & arrange installation.

Book an installation date:

We will now arrange a start date and take a deposit. We will also outline the payment structure and dates for each installation during the progress of build.


You will have direct communication with your designated Project Coordinator throughout the entire process. This means that all communication is with one allocated person.

Detailed Planning:

You are going into the finer detail. This is where you can decide on where you would like your light fittings, sockets & switches. We will also give you an electrical plan to show your wires for future safety. We will also confirm the exact location of your garden room.

Final Chance to add Extras:

We now have an installation date booked in and 99% of your build arranged; however, from experience, we find that clients make last-minute changes. We can facilitate minor changes up to 72-hours prior to the installation date. These changes include more electrical points, such as sockets, heaters & lights, additional decking and, changes to internal paint colours (these changes do not include structural changes).

Installation & Delivery:

Our team will be on-site for the delivery of all materials, and the work will begin when our main structure is delivered. This will be pre-booked with you in advance. The foundations generally take 1-Day to complete, and the main structure takes roughly 5-7days to complete. The room may not be usable at this stage, as depending on weather conditions, the plaster could take a few days to dry.

Quality Inspection

Once the main structure is up, one of our Manager’s will visit the site and conduct a detailed inspection of the garden room to ensure they are fully satisfied with the build quality. At this time, we can answer any questions you have about your new room.

Underfloor heating is commonly installed in our garden rooms. We use electric heating mats that can be controlled by wifi. This will allow you to heat your garden room from your house prior to using it.
overhead photo of black luxury composite garden room
luxury composite cladding garden room


Stone Composite
anthracite grey slatted composite cladding for garden room

Anthracite Grey Slatted 

walnut slatted cladding for garden room

Walnut Slatted
Composite Cladding

Granite Composite
Walnut Composite
Grey Wood Effect
Composite Cladding

Natural Slatted Cladding


Oak Slatted

Black Slatted Cladding

grey slatted composite cladding
Granite Composite
Cedar cladding on a garden room

Canadian Red Wood Cedar

Grey Wood Effect
Composite Cladding

Why My Outhouse Composite Garden Buildings?

No Hidden Costs
Foundations & Installation Included
Great Communication & Constant Feedback
High-Quality Materials
Expert Team
Bespoke Builds Available
Great Reviews
Quality Control


Product Feature

Our Composite garden rooms are premium structures with foundations, plastered internal walls, external sockets, light fittings and much more included in the pricing. Each of our rooms has a range of composite styles available and benefits from premium insulation, eco-friendly foundations, and various heating options.

The Roof: Our roofs are made from highly compressed insulation and weatherproofed by a solid piece of EDPM premium roofing material. Made to retain heat and keep your heating bills low.

The Walls: With 100mm of premium insulation and a layer of composite cladding, our garden rooms retain heat and require little to no energy to keep warm.

The Base: Built on ground screws, our foundations limit the mess in your garden and elevate the building from the floor, eliminating common issues caused by lack of airflow.

External Double Socket

Fully Insulated

External Lighting

Plastered & Painted Finish

French, Sliding or Bi-folding Doors

Installation & Foundations

Wood Effect Flooring

Internal Lighting

Eco-Friendly Foundations


Composite Garden Room Service Areas

My Outhouse Building Services

Frequently Asked Questions

Do Composite Garden Rooms require maintenance?

Composite garden rooms require little maintenance, other than a simple wipe-down with a damp cloth if they are marked by surrounding hedging. 

Composite cladding offers some level of fire resistance and limited combustibility. The fire resistance of uPVC cladding material can vary, with some reaching Class B or Class C, implying they contribute minimally to fires. Untreated timber typically falls into Class D or Class E.

All of our Composite Garden Rooms are bespoke and start at 2m x 2m. Depending on your requirements, they can be built to any size, and we can help you plan the perfect composite outhouse for your garden.

We build our Composite Outhouses with 100mm of insulation and ensure they are as airtight as possible to retain heat all year round. 100mm of insulation is more than sufficient to keep the room warm in the winter and cool in the summer. The ceilings also have 145-150mm of compressed insulation, which is incredibly energy efficient.

Underfloor heating is commonly installed in our garden rooms. We use electric heating mats that can be controlled by wifi. This will allow you to heat your garden room from your house prior to using it.


Process for Garden Rooms

Consultation & Planning

Our team will talk you through all available options and help you choose the best garden room for your needs & space.

Design & Installation

Once you have selected your preferred garden room, we can go through the finer details and arrange an installation date.

Completion & Support

Once your room is completed, one of our quality managers will visit you to check the build meets our quality standards.

Let’s Design Your Garden Room

Arrange a meeting to discuss building your new garden gym, office, or purpose-built and insulated garden room with many potential uses.