Insulated Summerhouse – Not Just for Summer!

Fully insulated summerhouse for year-round use

Summerhouses needn’t just be for summer


The damp, dark and dreariness of winter often keeps us confined to the house where it’s warm and cosy. When the warmer summer months come around it’s like our homes double in size, with the garden open to us again like a vast home extension! The garden quickly becomes our living room, dining room, kitchen, playroom and so much more.

But what if you could make use of your garden all-year-round?

insulated garden rooms

Our garden room buildings are fully insulated, with heating included as standard, for comfortable use all-year-round. With an insulated garden room building from Green Retreats, you can make the most of your garden and have an insulated summerhouse to use in any season!



Garden room buildings as your ideal insulated summerhouse

A garden room building is an outbuilding, much as a traditional summerhouse is – but that’s really where the similarities stop. A traditional summerhouse is very similar to a classic garden shed (thin walls, damp interior, traditional styling etc). By comparison, a garden room is a quality built structure that’s finished to the same high standards as a room in your house would be. To make the most of your garden in any weather, the extra investment into a fully insulated summerhouse garden room building from Green Retreats could make all the difference.

Inspiration garden room at end of garden



About our insulation

We’ve been designing and building quality garden rooms since 2005. In that time we have perfected our insulation for optimum performance.


insulated building components

Our wall sections are custom built in-house to offer an ingenious system of keeping the outside elements at bay and the internal environment comfortable. Our insulation has breathable membranes that control the flow of air and moisture that stop your building becoming stuffy or damp. We use premium double-glazing throughout with swisspacers and planiterm layers for superior thermal rentention. Our roofs and floors are exceptionally strong, using thick sandwiched foam insulation. Find out more about our insulation and materials…


Insulated summerhouses are great for summer too!

Quality insulation helps keep your building warm in winter and cool in summer. 

The insulation also has a reflective layer to reflect excessive heat away from the building in summer whilst keeping any internal heat inside.



Benefits of a garden room over a traditional summerhouse:

  • Modern and contemporary style
  • Quality materials
  • Insulated throughout
  • Double-glazed windows and doors
  • Dry, weatherproof and comfortable internal environment
  • Finished to the same high quality as a room in your house
  • Completely maintenance-free
  • Electricity included with internal wiring (just needs to be connected)
  • Safe and secure with insurance grade locks
  • Cost-effective to heat and keep warm



Upgrades available for complete temperature control in your summerhouse:

With a garden building from Green Retreats as your summerhouse, you can have complete control of the seasons and enjoy your garden at any time. A wall-mounted radiator is included as standard with every building, with optional upgrades for underfloor heating and even air-conditioning!



Insulated summerhouse ideas:

You might have a plan for how you’d like to use your insulated summer house, but why not check out our detailed blog exploring 7 fun summer house ideas to help you get the most out of your garden room. Read the blog here…

Discover ideas including:



How much does an insulated summerhouse cost?

Starting from as little as £11,732, you can have yourself a brand new Basebox garden room! Alternatively, suppose you’re looking for something special; in that case, our TGO range includes the following as standard: professional installation, base/foundations, maintenance-free cladding, maintenance-free steel roof, premium-grade insulation throughout, double-glazing, 2.3m French or sliding door, opening lozenge window, oak laminate flooring options, soft-sheen white melamine wall finish, internal electrics, 3 double plug sockets, oil-filled radiator, internal lighting options, external lighting options and much more!

Find out more about what’s included in our prices…

garden room in snowy winter garden

A garden room building typically costs more than a traditional summerhouse but offers much better value for money. Every garden room is maintenance-free, comes with a comprehensive 12-year guarantee and is designed for a 30-year life!


“Do I need planning permission for an insulated summer house building?”

More often than not, summer houses and garden rooms do not need planning permission because they fall within your permitted development rights as an ‘outbuilding’. This saves you time and money with your project!

If you do happen to need planning permission (because of the type of home you live in or the area you live in) then we can take care of the application for you, making the process as hassle free as possible.



Want to find out more?

Get in Touch with our Sales & Design team today!

We’d love to tell you more about our insulated garden buildings, and discuss your ideas for a year-round space in your garden. Get in touch with the team today using the form below and we will be sure to get back to you shortly:

  • Please enter the first part of your postcode so we can calculate shipping.

Building Measurements

You can get a great idea of how your new garden office will look by using the 360 degree rotating viewer.

Also compatible with mobile and tablet devices


Design Your Building

Start designing your garden room today using our online Visualiser tool. You’ll be able to choose your style, size, finishes and get an accurate cost.

Design Your Building