3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room
3m x 3m Insulated Garden Room

3m x 3m Insulated Garden Room

Our Insulated Garden Rooms are our most premium timber garden buildings, designed to create the perfect extension of your home. Perfect as additional living and entertaining space a home office, gym or even occasional guest accommodation. Our insulated garden rooms are designed for year-round use and their possible uses are endless.

Shiplap+ Cladding
Interlocking Tongue And Groove Roof And Floor
Double Glazed Opening Windows
Supplied With A Lock And Key For Security
10 Year Anti Rot Guarantee
Interchangeable Panels To Suit Your Requirements

This 3m x 3m Insulated Garden Room is an incredibly versatile building that can be used all year round thanks to the Eco-quilt insulation that features in the walls, roof and floor. The walls are consist of three layers, a 16mm tongue and groove outer layer, a 44mm gap in the middle that is filled with insulation, and a 12mm tongue and groove inner wall. The thick walls mean heat is trapped in and any entering noise from the outside is greatly reduced.

Each window used in this building is double glazed as standard and filled with argon, helping to retain the warmth all year round. Because our garden rooms are fully modular, you can customise the building to a spec that suits your need down to the placement of the windows and doors. You can even choose how many windows you want and whether or not you want internal walls.

The roof and floor are built using 16mm tongue and groove cladding and also utilise the same Eco-quilt insulation within their construction. We use an EPDM rubber to cover the roof of this building, EPDM is a membrane designed by Firestone that offers incredibly resilient and long lasting protection against the British weather.

An added bonus with this Insulated Garden Room is that it does not require planning permission from the local authorities because it is under 2.5m in height. We do advise you check with your local authority to confirm this. All of our insulated garden rooms are fully installed for you as part of the price you pay, meaning all you have to do is sit back and relax whilst our installers erect your new building.

At Mercia we like to make the shed buying process as stress-free as possible, that's why we offer a professional and efficient Installation service across a wide range of our garden products, including sheds, summerhouses, greenhouses, playhouses, log cabins and insulated garden rooms. So you can sit back, relax and let our expert fitters take care of everything.

Once you have purchased our Installation service, our helpful customer service team will send you all the necessary information on how to prepare your garden for the installation. Before we arrange the installation we must ensure you have a firm, level base with a minimum of 60 cm space surrounding, for our installers to assemble your garden building upon and ensure they leave you with a building fit for many years of service. Once confirmed we will arrange a date that best suits you.

Installation will take place on the same day as the delivery of your building. Our friendly team will keep in contact and you'll be given a 2-hour delivery slot, meaning there is no need for you to wait in all day. Our expert fitters are fully trained and will work professionally, carefully and quickly to ensure that your new garden building is constructed safely and to the highest standard in your chosen location.

Once completed, our team will make sure to clean up afterwards, leaving you to unwind and enjoy your brand new garden building.

Please Note: Sizes are approximate only. For specific details, please consult our technical department.

Imperial Size (ft)10 x 10
People Req'd To BuildFully Fitted
Anti-Rot Guarantee10 Years
Roof MaterialOSB & 12mm Matchboard
Floor Material16mm Matchboard
Roof TypeFlat Roof
Door StyleDouble Door
Building TypeGarden Room
Metric Size (Meters)3m x 3m
Under 2.5m TallYes


Width10' 5" / 3.18m
Depth12' 8" / 3.86m
Door Width4' 11" / 1.5m
Door Height6' 1" / 1.85m
Internal Width9' 8" / 2.95m
Internal Depth9' 8" / 2.95m
Floor Width10' 3" / 3.12m
Floor Depth10' 3" / 3.12m


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