20 x 8 Insulated Garden Buildings | Project Timber™
FACTORY DIRECT — best price guaranteed, straight from the maker. 20% OFF the Hobbyist range — code HOBBY20 applied automatically. GRANDMASTER — 16mm cladding upgrade & double glazing as standard. FREE DELIVERY on selected postcodes* — on our own vehicles, direct to you. 25-YEAR ANTI-ROT GUARANTEE* — on every pressure-treated building we make.
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20 x 8 Insulated Garden Buildings

Create your own comfortable garden retreat, garden office or a hobby room with our insulated garden buildings. Fully insulated garden sheds allow you to enjoy your garden whole year-round. Regardless of the weather seasons, our…

4 products
Evolution Insulated Garden Room - Composite

Evolution Insulated Garden Room - Composite

From £4,499
21 sizes: from 8ft × 8ft to 24ft × 12ft
Evolution Insulated Garden Room - Offset Door - Composite

Evolution Insulated Garden Room - Offset Door - Composite

From £6,499
12 sizes: from 14ft × 8ft to 20ft × 12ft
Pressure Treated Evolution Insulated Garden Room

Pressure Treated Evolution Insulated Garden Room

From £4,499
19 sizes: from 8ft × 8ft to 20ft × 12ft
Evolution Insulated Garden Room - Cedar

Evolution Insulated Garden Room - Cedar

From £19,999
19 sizes: from 16ft × 8ft to 30ft × 12ft
Showing all 4 products

20 x 8 Insulated Garden Buildings

Create your own comfortable garden retreat, garden office or a hobby room with our insulated garden buildings. Fully insulated garden sheds allow you to enjoy your garden whole year-round. Regardless of the weather seasons, our high-performance insulation kits provide maximum insulation solution keeping your garden buildings cooler inside in summer and warm on winter days.  The multi-foil insulation creates double pockets of air each side locking in the temperature.

Our insulation kit is quick, easy to install and covers any building you desire. Our online videos will show you simple steps to follow for installation.
Buy only what you need, discover our huge range of insulated garden sheds now.

Made in Britain Free delivery (selected postcodes)* Up to 25-year anti-rot guarantee*