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Wall Construction

Cosy Garden Rooms wall panels are made up of at least 5 different layers offering amazing insulation:

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  • Cladding

Cladding is the first line of defence for your garden room walls. This can be maintenance free Hardie board, cedar, redwood or maybe something different that you really want to match in with another structure or your house. We are open to suggestions!

  • A Breathable Membrane

The one-way vapour barrier prevents any water ingress from outside so your internal walls will never get damp. However, it does allow moisture to pass through it the other way, from the inside to outside. This helps to reduce internal condensation on the windows.

  • The Frame

This is a 90mm thick frame, so structurally very strong. You want to hang something heavy on the walls, not a problem. Bikes, TVs, cabinets, these walls can take the weight.

  • 50mm Insulation

More than half of the wall structure is filled with a solid silver backed insulation board. This is the same level of insulation commonly found in walk-in refrigeration units in supermarkets so plenty for your garden room. The rest of the frame is a cavity which is also a great insulator. This cavity is also needed for the electrical wiring and the back boxes for the light switches and plug sockets. No surface mounted electrics in our buildings thank you!

  • Grooved MDF Board

We use MDF for a number of reasons as the internal boarding to our buildings. First, it is a lot stronger than plasterboard alone which can easily damage if hit unlike MDF. Second, it makes it far easier for you to hang things up on the walls like pictures, clocks and so on. Lastly, since MDF is made of tightly packed fibres, there are lots of tiny air pockets so these boards are thermally better than plasterboard. Our walls feel warm to the touch unlike cold plasterboard walls. These are finished with skirting boards around the floor.


Altogether, a very sturdy construction which is very well insulated and absorbs sound well too.

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