Mercia Products Authorized Dealer
Sherwood Cresswell 4M X 3M Insulated Garden Room
Sherwood Cresswell 4M X 3M Insulated Garden Room
- Free Installation Service (Wooden Buildings).
- Free Insured Shipping.
- 10 Year Anti-rot Guarantee.
- Manufactured in the UK.
- Reasonable Price
- 10-15 Days Delivery
Low stock: Only 5 left
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What are the dimensions of the Sherwood Cresswell 4m x 3m garden room?
The Sherwood Cresswell 4m x 3m garden room measures 6.17m in width and 4.85m in depth, providing ample space for a variety of uses such as a home office or relaxation area.
Is the 4m x 3m garden room suitable for year-round use?
Yes, the 4m x 3m garden room is fully insulated with Eco-quilt multi-foil insulation, making it ideal for use throughout the year, whether as a garden office or insulated guest room.
Can I customize the layout of my 4m x 3m garden room?
Absolutely! The insulated garden rooms UK are customizable, allowing you to adjust features such as the window placement and door location to suit your needs.
Does the Sherwood Cresswell 4m x 3m garden shed come with insulation?
Yes, the 4m x 3m garden shed is part of the range of garden rooms insulated with Eco-quilt multi-foil insulation, offering superior warmth and comfort.
Can I use the 4m x 3m garden room as a home office?
The 4m x 3m garden room is perfect for use as an insulated garden office room, featuring double glazed windows, a spacious layout, and concealed wiring options for a tidy workspace.
How long will the insulation in the 4m x 3m garden room last?
The insulation in the 4m x 3m garden room, made from Eco-quilt multi-foil, is designed to last as long as the building itself, providing consistent thermal performance for many years.
What type of roof does the 4m x 3m garden room have?
The 4m x 3m garden room features a durable roof with a waterproof rubber membrane, designed to last for up to 50 years, ensuring long-term protection for your insulated garden room.







The 4m x 3m Creswell is a clean and contemporary insulated garden room, perfect for those looking to add a modern extension to their garden! This all-purpose garden room has been designed and built for year round use, ideal if you’re looking for a home office, guest accommodation or simply somewhere to unwind.
So much more than a summerhouse, this building is packed with premium features as standard. The walls, roof and floor contains Eco-quilt multi-foil insulation, which provides the same insulation as 100mm of glass wool. This combined with the double glazed windows and French doors ensures a warm, welcoming and comfortable interior all year round. The 100mm double skinned walls have also been designed with an easily removable internal panel to enable you to fit and conceal any electrics you may require – perfect for tidying away all your office cables. Finally the roof is covered with a superior waterproof rubber membrane, designed to last for 50 years!
The Creswell exterior has a classic modern design with stunning architectural features. The recessed front aspect creates a beautiful frame to the building as well as providing a welcoming sheltered entrance and veranda, ideal for rainy days! The open-plan interior creates a bright and airy space, perfect for working, entertaining or sitting back and relaxing. Manufactured to order here in the UK by our highly skilled team, using only the highest grade materials, you can be confident in the quality.
Available in multiple variants, this garden room is versatile and customisable. Looking for more windows? Not a problem. Wanting to move the door location? We can do that. Just give us a call and we can discuss the options with you! Mercia Insulated Garden Rooms are manufactured here in the UK, using sustainably sourced and regulated timber.
Available variants:
-3m x 4m
-4m x 3m
-4m x 4m
-5m x 3m
-5m x 4m
-6m x 3m
-6m x 4m
Specifications
- Treatment Type: Untreated
- People Req'd To Build: Fully Fitted
- Guarantee: 10 Year Guarantee
- Cladding: Shiplap+ Cladding
- Cladd Thick: 72mm Thick Double Skinned Walls
- Roof Material: OSB & 12mm Tongue and Groove
- Floor Material: 16mm Tongue & Groove
- Door Style: Double Doors
- Building Type: Garden Room
Dimensions
- Width: 20' 2" / 6.17m
- Depth: 15' 10" / 4.85m
- Eaves Height: 7' 2" / 2.19m
- Ridge Height: 8' 0" / 2.44m
- Door Width: 4' 11" / 1.51m
- Door Height: 6' 0" / 1.85m
- Internal Width: 19' 8" / 6.0m
- Internal Depth: 13' 1" / 4.0m
- Floor Width: 20' 1" / 6.14m
- Floor Depth: 13' 6" / 4.14m
Installation Service

Sit back and let us do the hard work! Our installation service is designed to not only save you valuable time but also take the work of moving and constructing the building off your shoulders. Our fully trained, expert fitters work professionally and carefully to ensure that your new garden building is constructed safely and to the highest industry standards.
And don't worry, we make sure to clean up afterwards, taking away excess packaging and leaving you to enjoy your new building.
Learn more at: https://www.gardenarch.co.uk/pages/installation-service
Home Delivery

We offer a fast, free and reliable home delivery service with every order to most UK postcodes. With the ability to pick-a-day that suits you and your schedule, there's no need wait around for days on end.
Our friendly and punctual delivery drivers will deliver your building within 7 - 10 working days of purchase at the front of your property. All of our products are delivered flat packed, to ensure it is easy for you to move the product from the delivery location to the build site.
On the day of delivery you'll be given a two hour delivery slot and our driver will keep in contact with you, so you can make the most of your day.
Learn more at: https://www.gardenarch.co.uk/pages/delivery
GardenArch vs Other Brands
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GardenArch
- Reasonable Prices + No Fees
- Free Shipping.
- Free Installation Service (Wooden Buildings).
- Made in UK.
- 100% High Quality Materials.
- 10 Year Anti-rot Guarantee.
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Others
- Expensive Prices + Fees
- Paid Shipping (£100+).
- Paid Installation Service (£500+).
- Imported from China.
- 100% Low Quality Materials.
- 1-5 Year Anti-rot Guarantee.
The Installation Service Process





Why Choose Us?
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Free Pick A Day Delivery
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Free Installation Service
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100% Made in UK
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10 year Anti-Rot Guarantee
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100% Satisfaction Guaranteed