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20 x 10 Waltons Overlap Apex Modular Garden Workshop

Now Just: £902.49

7 Reviews

20 x 10 Waltons Overlap Apex Modular Garden Workshop

Now: £902.49

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Click Image to Enlarge 20 x 10 Waltons Overlap Apex Modular Garden Workshop

What is included?

Sand Felt: A weatherproof barrier to help protect your garden building against the elements

10 Year Anti Rot Guarantee – Built to last

8mm Overlap Cladding; Creates a strong, weatherproof panel and features a traditional design

Solid Sheet Board Floor & Roof; 9mm lightweight compressed wood board suitable for general storage and everyday use

Modular Design; Panels can be positioned on either side of the building to suit your garden style

100% Shatterproof Styrene Windows; A much safer alternative to traditional glass glazing

Braced Double Doors; Provide easy access and features 'Z' shaped framing for added structural support

Added Height; Extra tall eaves and ridge height provide working headroom and space to store larger items


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

Imperial Size20 x 10
People Req'd To Build2
Framing28mm x 28mm
Anti-Rot Guarantee10 Years
Cladding StyleOverlap
Cladding Thickness7mm
Cladding MaterialOverlap
Roof Material9mm Solid Sheet Board
Floor Material9mm Solid Sheet Board
Roof TypeApex
Door StyleDouble Door
Building TypeWorkshops
Treatment Type
Metric Size
Log Thickness
Width 9' 11" 3.02m
Depth 19' 8" 5.99m
Eaves Height 5' 0" 1.52m
Ridge Height 7' 4" 2.24m
Door Width 4' 4" 1.32m
Door Height 5' 10" 1.78m
Internal Width 9' 8" 2.95m
Internal Depth 20' 2" 6.15m


This Waltons 20ft x 10ft Overlap Modular Wooden Garden Workshop is the largest garden building in this range. Boasting a large interior, this wooden garden workshop is perfect for completing DIY tasks and storing gardening equipment. Extra tall eaves and roof height provide plenty of working headroom and space to store larger items.

Eight windows allow natural light to fill the workshops interior for a bright working space. The windows are glazed with 100% shatterproof styrene, a much safer alternative to traditional glass glazing. This wooden workshop features a modular design; the panels can be positioned on either side of the shed to suit your garden style.

Constructed using high quality 8mm overlap cladding and solid sheet board material for a strong construction. The overlap cladding features a rustic style to suit any garden and is supported by strong 28mm x 28mm interior framing. To prevent sagging, the large double doors are braced with high quality 'Z' shaped framing. Double doors provide easy access into the garden workshop, ideal for storing larger items.

The traditional apex style roof prevents the build-up of rainwater, protecting the wooden garden building from weather damage. Quality sand felt is supplied as standard with the wooden workshop to create a weatherproof barrier, helping to prevent damp and rot. Complete with a ten year anti rot guarantee, you can be confident that this timber garden workshop will look great for years to come.

01OVLPA1010DDFW-V1.pdf Click here to view our easy to follow installation instructions SI-001-001-0016.pdf Click here to view our easy to follow installation instructions

Important Information

Our dip treated buildings, once installed, will need treating as soon as possible and on an annual basis in order to receive the 10 year anti rot guarantee*. The building also includes a 1 year manufacturers guarantee* as standard.

Dip Treated Buildings

  • Our buildings are supplied flat packed as DIY kits with full instructions.
  • It is the customer's responsibility to follow the instructions outlined in Aftercare.
  • All of our buildings are delivered unpainted. The buildings are dressed for display, we don't supply any accessories or shelves featured within the product images.
  • Our factory applied Dip Treatment may differ in shade between components as it is simply a basecoat.
  • Exact product dimensions are supplied on the listing as we do round off the main size of the building in order to make it easier for customers to find, so please be sure to check the item's specific measurements carefully.
  • All measurements refer to the exterior of the building which includes the roof overhang unless stated otherwise.
  • Our styrene windows are protected using a clear film which will need to be removed after you've installed the building.
  • Delivery times highlighted with an asterisk (*) refer to working days.

10 Year Anti-Rot Guarantee

Our Dip Treated Garden Buildings come with a 10 year anti rot guarantee. Anti-rot protection guards against fungal decay. The guarantee does not cover movement, twisting, warping or splitting of timber products over time.

During manufacture we apply a water based treatment which protects against fungal and insect attack. This treatment lasts approximately 3 months and will require a preservative top coat application as soon after construction as possible.

In order to keep your building in tip top shape and maintain the 10 year anti rot guarantee, it will need re-treating at least annually. Only high quality timber preservatives should be used and applied in accordance with the manufacturer's instructions. This must be done at least annually to preserve the 10 year anti rot guarantee. For more information please refer to the Waltons T&C's.

1 Year Manufacturer's Guarantee

Subject to the conditions set out in the T&C's (Section 8) the Seller warrants that the Goods will correspond with their specification at the time of delivery and will be free from defects in material and workmanship for a period of 12 months.


We want you to enjoy the use of your new garden building for many years. To give you the best chance of doing so, your product needs protecting at the start and maintained during its life. If you're planning a DIY project, please read our Self-Installation & How to Build a Shed advice pages before you start.


All long-lasting garden buildings will have been built on a solid and level base, either concrete, slabs, a wooden frame or ground level bearers. A flat, level base is essential, for more information go to our How to Build a Shed Base guide.

If your garden building is not level and square when built, it will twist and warp with the natural movement of the wood. The first signs of this are when the doors or windows stop opening and closing properly. You may get issues with the roof and potential gaps in the panels which will allow water in, there may be flex in the floor and probably creaking. Check your base is level in both directions and adjust prior to the build. It will be really difficult to adjust afterwards.


Our styrene windows are protected using a clear film which will need to be removed after you've installed the building.

All Waltons shed windows are designed to fit well, but over time and with the movement of wood, small gaps can appear. Help to prevent this by sealing your windows with a silicone sealant. You can do this either when you build your shed, or add it to an existing one. We've created this video Protect Your Shed - Silicone Window Sealant for guidance.

We've also created these handy Maintenance Guides to help you make the most out of your building, for years to come. Should you require any further advice, you can contact our Customer Service Team on 0800 029 1000 and select Option 3.

Delivery Information

Delivery on this building is 7-10 working days to most UK Mainland addresses.

You can book the day of your choice for delivery when placing your order, alternatively you may place your order without selecting a delivery date and one of our team will contact you directly to arrange a suitable delivery date.

Due to the nature of our products we are unable to deliver to Ireland, some areas of Scotland and any offshore islands. If you are unsure then please use the postcode to see if we are able to deliver to your area.

Important - Unless otherwise stated delivery is kerb side only, though at the drivers discretion they may be able to help you lift the building to a more suitable location outside your property. If you need to transport the building through your house then you will need to make your own arrangements prior to delivery to do this as our drivers are not insured to enter your house.

The Customer or Friend/Neighbour will need to be present to sign for the delivery. We cannot leave the item without a signature.

Our driver will call you when they are approximately 30 minutes away from your location.


We offer a 30 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.


Free Delivery

This garden building comes with FREE delivery to most UK postcodes. For more information check here.

Roofing Felt

This garden building comes with free roofing felt.

Solid Sheet Materials Roof

This building is supplied with an OSB roof. Hardwearing, stable, excellent moisture resistance and no knots or voids to worry about.

Round Edge Framing

Our internal framing is planed and rounded to avoid splinters to hands and also makes it more resistant to moisture

Floor Joists

This garden building uses planed timber in the floor joists to provide a sturdy support on your base.

10 Year Anti Rot Guarantee

This Product carries the 10 year Anti Rot guarantee as long as the garden building is well maintained.

8mm Overlap

Our overlap panels are made from domestic pine timber. The rough sawn finish make them very absorbent which helps when applying a spirit based wood preservative.

Ledge Double Doors

This garden building comes with double doors.

Styrene Glazing

This garden building comes with styrene glazed windows.

Pad Bolt

A garden padbolt is provided with this building for added security.

Ledged and Braced Door/s

This garden building comes with fully ledged and braced doors adding security and helping to extend their durability.

Full Instructions and Assembly Kit

The Log Cabin is supplied with a comprehensive instruction manual and full assembly kit that makes construction as simple as possible. *Does not include tools.

Window Panel Placement

The window panel can be located on either the left or the right handside of the building

Manufactured in Britain

This Product was manufactured in the UK. By purchasing this product you are supporting British manufacturing.


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Unlike many companies, we publish all of our reviews - good or bad - to give you, the customer, total transparency and peace of mind.

Date: 25-Nov-2018
Review:No thought at all about anything just disappointed
Our Reply: Awaiting comment
Date: 20-Nov-2018
Review:Seems Good, although a little less substantial than I expected.
It will fit together well I'm sure
Our Reply:Good morningThank you for leaving your feedback today.
It is good to know that you are happy with the product and hope that it was installed satisfactorily. If you have any problems please do not hesitate to contact our customer service department who will be only too happy to assist...
Date: 12-Nov-2017
Review:still waiting to build shed so can't say for 100 purcent it is ok
Our Reply:Good afternoon,

Do let us know how your Garden Workshop looks when it's built!

Kindest regards,
Stevie - Waltons Team
Date: 15-Aug-2017
Review:Not as good as expected poor quality for price
Our Reply:Good afternoon,
Thank you for your feedback, I have tried to call you earlier and have left you a voice message, which I hope you will be able to pick up later. Please accept my apologies for the missing parts and the issues you have experienced with your new workshop, if you are able to contact us...
Date: 23-Jun-2017
Review:The shed overall was brilliant value for money , but the Windows and the floor could do with being a little stronger for the size of the shed
Our Reply:Good afternoon,

It is wonderful to know that you are happy with the overall quality and value for money and we take your comments on board as we are always looking for ways to make improvements. Thank you again for your great review.

Kindest regards,
Kirstie - Waltons Team
Date: 04-Oct-2016
Review:The roof panels are longer than the side panel, so we had to move the trusses to compensate, which meant more unnecessary work.
Our Reply: Awaiting comment
Date: 13-Aug-2016
Review:Great shed, I regret getting the lower rated one. The walls and floors are weak and easily destroyed if storing any heavy equipment
Our Reply:We do have the option of a floor support kit for our customers that require the extra strength. This may be something which would be suited to your needs.
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