Skip to product information
1 of 12

The Edwinstowe 5m x 3m Premium Insulated Garden Room with Anthracite UPVC

The Edwinstowe 5m x 3m Premium Insulated Garden Room with Anthracite UPVC

Regular price £12,549.99
Regular price Sale price £12,549.99
Sale Sold out

In stock

  • From the Flagship Sherwood Collection
  • A Luxury Modern Nordic Design
  • Opt for Professional Home Installation
  • Enjoy our 10 Year Anti Rot Guarantee
  • 100mm Thick Double Skinned Walls
  • EcoQuilt Insulation Walls & Floors Keeping it Cosy
  • Featuring Air Tec Insulation in the floor
  • Designed for All-Year-Round Use
  • Three Point Locking System for Peace of Mind
  • You Decide! Moveable Doors and Windows
  • Made from Sustainably Sourced Timber
  • Handmade in the UK for Superior Quality
  • UPVC Available in Three Colours
View full details
manufactured in the UK

Why Buy From Waltons

Read more

Shiplap+ Cladding

From the Premium Sherwood Range

UPVC Doors and Windows

Insulated with EcoQuilt Insulation in the walls & roof

Featuring Air Tec Insulation in the floor

100mm Thick Double Skinned Walls

Premium EPDM Roof Covering

Contemporary Ironmongery

Home Installation Included

Customisable Design - Moveable Doors and Windows

Feefo Gold Trusted Service Award

Manufactured in Britain

Manufactured from Sustainably Sourced Timber

10 Year Anti Rot Guarantee

Delivery to Most UK Postcodes

Shiplap+ Cladding

From the Premium Sherwood Range

UPVC Doors and Windows

Customise your options


Installation Services




Wood Preserver


Treatment Options


Please enter your postcode to choose your delivery slot:


Garden Rooms

Zone A - FREE

AL, B, BA, BB, BD, BH, BL, BN, BR, BS, CA, CB, CH, CM, CO, CR, CT, CV, CW, DA, DE, DH, DL, DN, DT*, DY, E, EC, EN, FY, GL, GU, HA, HD, HG, HP, HR, HU, HX, IG, IP, KT, L, LA, LE, LN, LS, LU, M, ME, MK, N, NE, NG, NN, NP, NR, NW, OL, OX, PE, PO*, PR, RG, RH, RM, S, SE, SG, SK, SL, SM, SN, SO, SP, SR, SS, ST, SW, TF, TN, TS, TW, UB, W, WA, WC, WD, WF, WN, WR, WS, WV, YO

Zone B - £199.99

CF, DG, EH, FK, G, KA*, KY, ML, PA*, TD

Zone C - £749.99

AB, DD, DT*, EX, IV*, LD, LL, PA*, PH*, PL, SA, SY, TA, TQ, TR*

Zone D - £369.99

GY, IV*, JE, KW*

Delivery Unavailable -

BT, GY, HS, IV*, JE, KA*, KW, PA*, PO*, TR*, ZE

*Delivery charge/availability may vary based on location within the postcode

    Total: £12,549.99
    Important Info


    The 5m x 3m Edwinstowe Insulated Garden Room with Anthracite UPVC

    Introducing the expansive 5m x 3m Edwinstowe, a sleek and modern insulated garden retreat ideal for enhancing your outdoor space. Crafted for year-round comfort, this versatile garden room is tailor-made for various purposes, whether you envision a plush reading sanctuary, a hub to expand your business ventures, or even a private home cinema experience. Experience luxury and functionality seamlessly integrated into your garden oasis with the Edwinstowe.

    Benefits of an Insulated Garden Room

    Insulated garden rooms are a cost-effective way to create versatile extra living space which is easily customisable to your needs. Because a garden room is separate from your home, it offers a measure of peace and privacy that’s perfect for uses like a garden office, a home gym, an art studio, or a relaxing retreat from which to enjoy your garden.

    Thanks to its insulate, double-skinned design, they are ideal for all round use meaning you get maximum use from your latest investment. In addition to its double-skinned design, the roof and floor are also fully insulated, meaning all sides of your building are wrapped up from the elements. In addition, double glazed windows not only contribute to the temperate regulation inside your new space, but also offer a sound barrier to outside noise, creating a calm and relaxing environment. 

    Garden rooms are also proven to add value to your home. You can typically expect 1.5x the cost of the garden room to be added to your house in value, so it really does pay to have additional space! With working from home and home businesses becoming increasingly popular, a space away from the house is often on the shopping list of prospective buyers.

    UPVC Doors and Windows

    UPVC is a low-maintenance material that doesn't need yearly treatments like wooden framed windows. You can pick choose from three attractive colours, anthracite, oak, and white to customise your garden room without needing paint. UPVC provides security with a light but strong frame, strong locks, and double-glazed glass that keeps unauthorized entry at bay.

    When choosing a garden room, energy efficiency is important. The UPVC framing and double-glazed windows also reduce outside noise, creating a peaceful and productive space.

    Indulge in the tranquillity of our UPVC windows, upgraded with cutting-edge multipoint locking technology for unmatched security against unwanted intrusions. Plus, our revolutionary window locking system guarantees worry-free ventilation, so you can enjoy fresh air without the concern of abrupt closures during windy weather.

    Fully Insulated Structure

    Our Insulated Garden Rooms offer fully insulated walls, roof and floor not only to make sure your new space is comfortable during the colder months, but also to encourage it to stay cool during the warmer months.

    Our Sherwood Range boasts 100mm thick walls, with EcoQuilt insulation nestled in between the timber cladding. You can also find EcoQuilt in the roof. EcoQuilt is a multi-foil insulation, manufactured in the UK which also includes a high-performance vapour control layer helping ensure your building remains free from damp and moisture. In addition to EcoQuilt, the floor is insulated with AirTec insulation which boasts a 50% reduction in heat loss by trapping air within its bubble structure.

    Customisable Design

    Available in multiple sizes, this garden room is versatile and customisable. Looking for more windows? Not a problem. Wanting to move the door location? We can do that. Simply add them on from our upgrades list, or give us a call and we can talk this through until you achieve your perfect design.

    EPDM Roof Covering

    As standard with our Sherwood Range of garden rooms, you will receive an EPDM roof covering, rather than traditional mineral felt. EPDM is an impermeable synthetic rubber which boasts a 50-year lifespan, keeping your garden room’s roof dry and damp free for decades to come. It’s pliable in both the heat and the cold, meaning cracks and areas of weaknesses do not form like they may do with traditional roof coverings. It’s also resistant against harmful UV rays. In addition, in the chance of any small tears or holes, unlike traditional felt where the whole roof covering would need to be replaced, EPDM can be simply patch repaired, which is far more efficient and cost effective than an entire roof covering replacement.

    Contemporary Insulated Garden Rooms

    Our contemporary insulated garden rooms offer a modern Scandinavian feel, with minimalist edges, simple designs and functionality at its heart. Our Harlow, Edwinstowe and Creswell epitomise this logic by offering clean lines and airy interiors, ideal for those looking for a contemporary space in their garden.

    Featuring a pent roof design, the Creswell Insulated Garden Room presents a modern and streamlined aesthetic. The inclined roof allows the structure to discreetly blend into any garden setting, all while creating a warm and snug interior ambiance.

    Anti-Rot Guarantee

    Enjoy peace of mind with our Insulated Garden Rooms, backed by a 10-year anti-rot guarantee at no extra cost. You can relax in your new outdoor space knowing your building is protected by us. To uphold the validity of this guarantee, it's essential to annually treat your new garden room with wood treatment. This simple step helps prevent fungal attacks, ensuring the longevity of your new serene retreat.

    Home Installation Included

    So you can sit back and relax, Home Installation Service by our expert installers is included with the price of this building as standard. They will arrive ready to put up your new retreat to our exacting standards. They’ll tidy up after themselves, so the only thing you have to do is step in and enjoy your new space.

    Prior to booking the date of your home installation with us, you will need to have a firm and level base ready for construction, or have selected the Elite Timber Base option from our upgrades list.

    Sustainable Timber

    Each insulated garden room in our selection is exclusively crafted from ethically sourced and certified timber, meticulously manufactured right here in the UK by our experienced team.

    The History of Waltons

    At Waltons, we've been skilfully crafting garden buildings since 1878. Originating with the manufacturing of bee hives, we rapidly expanded to offer a diverse range of garden structures to meet various needs. With nearly 150 years of expertise in creating beautiful wooden structures, we've gained valuable insights along the way. Trust us to bring your garden dreams to life with our long history of craftsmanship.

    What do our Customers Say?

    Our dedication to excellence has earned us a prestigious Gold Trusted Service Award from the renowned review site, Feefo. When selecting us for your garden building, rest assured in the confidence that comes with this recognition. From expert pre-sales assistance to knowledgeable aftercare and support, our accolades speak volumes. Join the ranks of thousands who have placed their trust in us to craft and deliver the garden building of their dreams.

    The Sherwood Range

    The Sherwood Range comprises our flagship Insulated Garden Rooms, appropriately named after areas local to us in Nottinghamshire. These include: the parish of Rufford, famously home to Rufford Abbey and Country Park. Thoresby, the site of the extremely impressive Grade I listed Thoresby Hall. Edwinstowe, another Nottinghamshire parish, famous for being home to Robin Hood and Maid Marian. Creswell, which actually resides on the Nottinghamshire-Derbyshire border. In Creswell, you can find Creswell Crags, a candidate for being one of the next World Heritage Sites due to its caves which date up to 43,000 years ago. Finally, the Harlow, named after Harlow Woods, which stretches near Fountaindale. Legend states this was the meeting place of Robin Hood and Friar Tuck.  

    Aside from the local links and fairytale legends, what stands the Sherwood Range apart is their improved wall thickness, providing heat retention during the colder months and encouraging coolness during the warmer seasons. Upgraded EPDM roofing as standard; EPDM is a type of synthetic rubber with full waterproof capabilities designed to last 50 years, the perfect option when investing into a new garden building.

    Still have questions?

    If you're still unsure, why not call our expert, friendly sales team on 0800 029 1000. Alternatively, visit our showsite based in Nottinghamshire.


    Please Note: Sizes are approximate only. For specific details, please consult our sales team.

    Imperial Size (ft) 17 x 13
    People Req'd To Build 0
    Anti-Rot Guarantee 10 Years
    Cladding Style Shiplap+ Cladding
    Roof Material OSB & 12mm Tongue & Groove
    Floor Material 16mm Tongue & Groove Floor
    Roof Type Pent
    Door Style Double Door
    Building Type Garden Room
    Metric Size (Meters) 5.2 x 4.0
    Material Wood

    Imperial Metric
    Width 206.1 in 5.23 m
    Depth 158.5 in 4.03 m
    Eaves Height 87.16 in 2.21 m
    Ridge Height 95.7 in 2.43 m
    Internal Depth 118.2 in 3.0 m


    You can book your preferred delivery date by either:

    1. By choosing it when placing your order with us.

    2. Through the link provided within your order confirmation email or text message

    If a delivery date is not selected, one of our friendly team will be in touch. They will help arrange a suitable delivery date that fits your schedule.

    Your garden building will be delivered using either a 3.5t, 7.5t or 18t flatbed vehicle. If you believe there may be difficulties accessing your property or the delivery location, please inform us of this prior to your delivery date.

    All our deliveries take place between the hours of 7 am and 7 pm and are carried out by one of our helpful drivers.

    On the morning of your confirmed delivery date, we will contact you by email or text message assigning you a two-hour delivery slot. This means that there is no need to wait in all day! We aim to meet these delivery times wherever possible. However, please be aware that unforeseen circumstances can cause deliveries to take a little longer. But rest assured, we are always working hard to keep delays of this sort to a minimum.

    Also, on your confirmed delivery date, we will send over a link to the Delivery Portal. Here you will be able to track the exact location of your delivery driver.

    Please note that all our deliveries are kerbside only. Our drivers are not permitted to enter your property. If you live in a terraced property, please be mindful to this.

    Our delivery driver will unload your new garden building piece by piece to prevent any damage. Yourself, a friend or neighbour will need to be present during the delivery process. This is to ensure that you are happy with the building and are available to sign for the item where required.

    In certain situations, we may be able to leave your new garden building in an assigned safe location. If this is a service that you require, please contact our Delivery Team on 0800 029 1000, prior to your confirmed delivery date.

    For further information regarding delivery areas and charges please see 'Delivery Charges Explained'.


    We offer a 14 day money back guarantee on all of our items. The guarantee commences from the date which you receive your item and we offer a free collection service as part of this agreement.

    The building must be returned in its original, untreated, resalable condition. Until the item is collected by our courier, it's the responsibility of the customer to ensure that the building remains in this condition.

    As the buildings are sold as DIY kits, we cannot dismantle on your behalf and we cannot be held liable for any third party costs. Once the building has been received by our factory, a full refund will be issued within 1-3 working days.

    Important Information

    Where can I find the exact measurements of my Insulated Garden Room?

    Before purchasing your new Insulated Garden Room be sure to check the specific measurements of its size in the Specification section of the product listing. As often in product titles, we round up measurements just so it’s easier for you to find your perfect garden building.

    How will my new Insulated Garden Room arrive?

    Garden Rooms are installed by our professional team. These garden buildings are supplied untreated and therefore once constructed you will need to apply a preservative and treatment as soon as possible in order to uphold your 10 Year Anti-rot Guarantee.

    Please note that this Insulated Garden Room has been dressed to look its very best in our product images. Any accessories and fixtures featured are not supplied with this garden building.

    Does my new Insulated Garden Room come with any guarantees?

    As standard, this Insulated Garden Room includes a 1 year Manufacturer’s guarantee, as well as a 10 Year Anti-rot Guarantee*.

    What does my 10 Year Anti-rot Guarantee cover?

    Our entire range of Insulated Garden Rooms benefit from our 10 Year Anti-rot Guarantee. This will cover your garden building against fungal decay as long as the conditions of the guarantee have been followed.

    These conditions include treating your new garden building with a high-quality timber preservative and waterproof top coat.Treatments of this sort should be applied as soon as your garden building has been constructed, and reapplied annually thereafter. This will enable you to maintain your 10 Year Anti-rot Guarantee and will keep your Insulated Garden Room in tip-top condition!

    Please note that our 10 Year Anti-rot Guarantee does not cover your garden building from the movement of timber that takes place over time. This includes; the twisting, warping and splitting of timber.

    For more information on our 10 Year Anti-rot Guarantee please refer to our Terms & Conditions.

    Does my new Insulated Garden Room require planning permission?

    We work hard to design all of our garden buildings to adhere to the planning permission guidelines. However, we cannot guarantee that planning permission will not be required. Therefore, before constructing your garden building we advise checking with your local authorities.

    What base do I require for my new Insulated Garden Room?

    A flat, level base is essential for the installation of your Insulated Garden Building. We recommend the following bases; concrete, or a wooden frame.

    Prior to the installation of your Insulated Garden Building be sure to check your base is level in both directions. If the base of your Insulated Garden Room is not level when it is constructed it will cause the building to twist and warp with the natural movement of the timber. Therefore, it is really important to adjust your base accordingly to achieve this before the installation process begins.

    For more information on how to build a suitable base take a look at our handy guide.

    How do I care for my new Insulated Garden Room?

    To ensure your Insulated Garden Room stands the test of time it’s important to follow the guidance outlined in your building’s product instructions and Manufacturer’s Recommendations.

    We have also created these super handy Maintenance Guides to help you take care of your garden building. They are full of our expert advice and useful tips so you can enjoy your Insulated Garden Room for years to come!

    However, if you need any further support, don't worry we are on hand to help. Just give our friendly Customer Service Team a call on 0800 029 1000.

    Frequently Asked Questions

    Can I choose a delivery slot?

    We will contact you on the morning of your confirmed delivery date by email and/or SMS with a 2-hour delivery time slot. We aim to meet these delivery times but during busy periods, deliveries may take a little longer, however we always work hard to keep delays to a minimum.

    What access is needed for my delivery?

    Our drivers are only contracted to provide kerbside drop offs and deliveries. They will NOT bring any of our orders through your home. A driver may offer to take an order further; for instance a back garden but this is ONLY at their own discretion. If you have added our installation service to your order please be aware that they will require full access to your garden. Our installation team will not bring a building through your home as they are not covered by insurance to enter a customer's home. If you have any questions about access or you live in a restricted access zone please contact our sales team on 0800 029 1000. Our team will be able to provide you with more information and specific building information.

    Will I need to help my delivery driver?

    Our drivers DO NOT need your help during a delivery. They will not ask for your help and they can manage all the items themselves. We are not insured to cover any customer injuries and therefore we ask you NOT to help or try and help our drivers while they make a delivery.

    Can't find the answer you are looking for? Checkout our full Frequently Asked Questions OR ask us a question

    Ask a Question