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20 x 10 Overlap Double Door Apex Garden Shed

20 x 10 Overlap Double Door Apex Garden Shed

Regular price £1,449.99
Regular price Sale price £1,449.99
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  • Enjoy our 10-year anti-rot guarantee
  • Opt for professional home installation
  • Double doors for easy access
  • Weatherproof mineral roofing felt included
  • All fixtures and fittings included
  • Easy assembly with clear instructions
  • Shatterproof styrene windows for safety
  • 8mm overlap cladding with a rustic charm
  • Durable solid sheet board roof and floor
  • Made from sustainably sourced timber
  • Handmade in the UK for superior quality
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manufactured in the UK

Why Buy From Waltons

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Heavy Duty Mineral Felt

8mm Overlap Cladding

Shatterproof Styrene Windows

Turn Button

Solid Sheet Board Floor & Roof

Manufactured from Sustainably Sourced Timber

Manufactured in Britain

Delivery to Most UK Postcodes

Feefo Gold Trusted Service Award

10 Year Anti Rot Guarantee

Full Instructions and Assembly Kit

All Fixtures and Fittings included

Heavy Duty Mineral Felt

8mm Overlap Cladding

Shatterproof Styrene Windows

Customise your options


Installation Services


Floor Upgrade




Roof Upgrades


Wood Preserver


Treatment Options


Please enter your postcode to choose your delivery slot:



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 - £69.99

BT, CF, DD, DG, DT*, EH, EX, FK, G, KA*, KY, LD, LL, ML, PA*, PH*, PL, SA, SY, TA, TD, TQ, TR*

Zone C - £99.99

AB, PA*, PH*

Zone D - £129.99

IV*, KW*

Zone E - £249.99


Delivery Unavailable -

HS, IV*, KA*, KW*, PA*, TR*, ZE

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

    Total: £1,449.99
    Important Info


    The 20 x 10 Overlap Double Door Apex Wooden Shed

    The 20 x 10 Overlap Apex Wooden Shed is the largest shed in the Overlap range, offering an extremely vast, open and spacious interior that is suitable for many purposes. This building would make a great workshop, with ample space for large equipment and tools as well as storing general gardening equipment and furniture. Offering double doors, this building provides easy access and storage of large items such as wheel barrows and ladders. 

    The walls of this shed are constructed using overlapping timber boards that are attached to a strong internal frame, to create durable and robust panels. This building is complete with thick wooden internal framing to support the overlap panelling, creating a rigid, long lasting structure. This shed also comes with oriented strand board (OSB) flooring and roof. This solid sheet board is manufactured from several layers of tightly compared oriented strands, ideal for every day use and general storage whilst being budget friendly. 

    Styrene windows allow plenty of natural light, ideal when looking for those bits and bobs, whilst being safe and shatterproof. The styrene windows are UV-resistant and therefore won't discolour in the sun over time. 

    Apex Roof

    Featuring a high apex roof-line, you’ll find there is plenty of headroom inside, ideal for storing taller items or utilising your shed as a workshop with plenty of space for spending hours tinkering away.

    All Fixtures and Fittings

    High quality roofing felt is supplied to protect your garden shed from the elements and provide longevity. In addition to this, all fixtures and fittings are supplied as standard, including our comprehensive product instructions helping you install your new shed as quickly and easily as possible. In addition to this, a complimentary padlock is included with your shed to get you off to a good start.


    All our overlap sheds come complete with Z-braced doors and a turn button giving you a blank canvas to add on your own lock of choice. 

    Shiplap vs. Overlap

    Overlap and Shiplap are essentially two different types of shed cladding. Cladding is simply the covering of your building. Overlap cladding is in the name, the boards overlap one another to create a traditional and rustic look. The overlapping design allows rainwater run-off and ensures your belongings are kept dry from the rain. This watertight design will protect from the wet British weather, however overlap cladding isn’t airtight. This means your shed could be susceptible to draughts and moisture.

    Shiplap cladding consists of multiple boards of timber which create a flush panel. Shiplap cladding features a recess at the top of the individual boards which helps water run-off, offering protection against the elements. Not only is shiplap cladding watertight like overlap cladding, but it also has the added benefit of being airtight, meaning belongings are much less at the risk of draughts and dampness. This means shiplap sheds are an ideal choice if you intend on spending time in your shed, as a workshop for example, or are planning to store items that could not risk coming into contact with any moisture. Another added benefit is its aesthetically pleasing smooth exterior, coupled with smooth interior panels, creating a high standard of finish both on the inside and outside of the building. This gives a more premium feel to your garden. 

    If you require any further information, head to our Overlap vs. Shiplap - What’s The Difference? blog post.

    Anti-Rot Guarantee 

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

    Treatment Requirements

    This shed is supplied un-treated and will require a coat of high quality timber treatment once installed. You can simply add this into your basket as an additional extra and we’ll deliver it alongside your new retreat, so you’re ready to go.

    History of Waltons

    Here at Waltons, we've been handcrafting garden buildings since 1878. Starting from humble beginnings, we started life manufacturing bee hives and then quickly expanded to a whole range of garden buildings to suit a whole range of needs. In the almost 150 years we've been making beautiful structures out of wood, we've certainly learnt a thing or two! So, you can trust us to bring all your garden dreams to life. 

    Sustainable Timber

    All of our garden sheds are made using only ethically sourced and certified timber and are all made here in the UK by our highly skilled team.

    What do our Customers Say?

    Having been awarded a Gold Trusted Service Award from review site, Feefo, you can be confident in choosing us for your garden building. With expert pre-sales help and knowledgeable after care and support, our accolades speak for themselves. Join the thousands of others who have trusted us to create and deliver a garden building of their dreams.

    Home Installation Available

    So you can sit back and relax, Home Installation Service by our expert installers is available at an additional cost. They will arrive ready to put up your new storage space to our exacting standards. They’ll tidy up after themselves, so the only thing you have to do is make yourself a cuppa.

    Finance Available

    Finance is a great way to spread the cost of your garden building purchase. To make it as easy as possible, we've teamed up with partners, Novuna and Klarna.

    Novuna is available on orders over £500. If you pay within 12 months, you can benefit from 0% interest. Klarna offers several options, such as ‘Pay in 30 Days’ and ‘Split in Three’, both of which are also 0%. So, what are you waiting for?

    Still need unsure?

    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) 10 x 20
    People Req'd To Build 2
    Cladding Style Overlap
    Cladding Thickness 7mm
    Roof Material 8mm Solid Sheet Board
    Floor Material 9mm Solid Sheet Board
    Roof Type Apex
    Door Style Double Door
    Building Type Workshops
    Treatment Type Dip Treated
    Metric Size (Meters) 3.0 x 6.0
    Under 2.5m Tall Yes
    Material Wood

    Imperial Metric
    Width 119.0 in 3.02 m
    Depth 236.0 in 5.99 m
    Eaves Height 60.0 in 1.52 m
    Ridge Height 88.0 in 2.24 m
    Door Width 52.0 in 1.32 m
    Internal Depth 232.32 in 5.9 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

    What does Dip Treated mean?

    During our manufacturing process, we dip treat our garden sheds. This involves applying a water based colourant to your garden building, protecting your shed whilst it is in storage and transit. However, it is important to note that this treatment is not a preservative. Therefore, your garden building will still require a high-quality timber preservative and waterproofing top coat as soon as possible after construction.

    Where can I find the exact measurements of my garden shed?

    Before purchasing your new garden shed 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 measurementsto make it easier for you to find your perfect garden building.

    How will my new garden shed arrive?

    Your new garden shed will be supplied as a flat-pack DIY kit with full instructions. If you're taking on the project yourself, be sure to check out our Self-Installation and How to Build a Shed advice pages for plenty of helpful tips.

    We strongly advise if you are planning on using a third party installer to construct your log cabin that you do not book their services until you receive and are happy with your garden building. As we do not cover any third party cost in the instance of a failed delivery or a damaged item preventing installation.

    Please note that this shed has been dressed to look its very best in our product images. Any accessories or fixtures featured are not supplied with this garden building. Also, unless our Ready Painted and Installation Service is selected, all of our garden sheds are delivered unpainted.

    Does my new garden shed come with any guarantees?

    As standard, this garden shed includes a 1 year Manufacturers guarantee, as well as a 10 Year Anti-rot Guarantee* Just make sure to follow the product instructions and our manufacturers recommendations and your guarantee will be good to go.

    What does my 10 Year Anti-rot Guarantee cover?

    All of our Dip Treated garden buildings benefit from our 10 Year Anti-rot Guarantee. This will cover your garden building against fungal decay as long as the conditions of the gurantee 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 garden shed 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 and Conditions.

    Does my new garden shed 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 garden shed?

    A flat, level base is essential when building your new garden shed. We recommend the following bases; concrete, slab paving, ground-level bearers or a wooden frame.

    Prior to building your garden shed be sure to check your base is level in both directions. If the base of your shed 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 constructing your garden building.

    For more information on how to build a suitable base take a look at our handy guide. - How to Build a Shed Base

    How do I care for my new garden shed?

    To ensure your garden shed stands the test of time its important to follow the guidance outlined in your buildings product instructions and Manufacturers Recommendations.

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

    However, if you do 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.

    How do I care for my garden buildings Styrene windows?

    A clear film is used to protect your Styrene windows. Once your shed is installed and treated this will need to be removed. This can be done by simply scoring around the edge of the window and peeling back the plastic covering.

    The windows of our garden buildings are designed to fit well. However, over time due to the natural movement of the timber small gaps can occur. To prevent this from occurring make sure to seal your Styrene windows with a silicone sealant.

    To see exactly how to do this, take a look at our Protect Your Shed - Silicone Window Sealant video.

    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

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