Click Image to Enlarge 12 x 5 Pressure Treated Tongue and Groove Pent Shed

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Total: £649.99

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The Waltons 12 x 5 Pressure Treated Pent Garden Storage Shed provides a safe and weather resistant space to store away your gardening tools and equipment.

The pressure treated timber has been infused with preservative to protect against weather damage, rot and insect damage. The 12mm tongue and groove cladding interlocks together to form a robust panel that prevents water penetration. Strong 2 x 1 interior framing provides additional strength to the build.

The roof and floor are constructed from OSB solid sheet board which is durable and can withstand everyday use. Two static windows made from shatterproof styrene, a safer alternative to traditional glass, make this shed ideal for allotments and busy gardens.

Supplied with mineral felt to provide additional protection against weather damage and a padbolt to secure your belongings. Complete with a 15 year anti rot guarantee, you can be confident that this pressure treated storage shed will last for many years to come.

Please note: The window and door panels of this shed are interchangeable and can be placed on either side during construction.

INSTRUCTIONS-01DDPENT1005-V2-01DDPENT1205-V2-01DDPENT1405-V2-TAG-OSB-08-03-19.pdf Click here to view our easy to follow installation instructions

Important Information

Our pressure treated buildings come with a 15 year anti rot guarantee* and offer a high level of protection against weather damage, rot, decay and insect attack. For maximum protection, once installed we do advise applying a waterproofing treatment to your garden building to prevent water ingress. All our buildings also include a 1 year manufacturer's guarantee* as standard.

Pressure Treated Buildings

Modern pressure treating techniques are environmentally friendly, using water-based treatments. However gloves should be worn when handling the parts/assembling the garden building.

Pressure treatment is different to externally applied preservatives and top coat treatments. Chemicals are impregnated into the fibres of the wood under pressure. This is done prior to assembling the building at the factory. By fixing chemicals into the wood, pressure treating offers protection against insect attack, chemical attack and natural decay. The building should also be treated with a waterproofing topcoat. While the effectiveness of the treatment does not alter without a top coat, the colour does change over time.

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.

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.

15 Year Anti-Rot Guarantee

Our Pressure Treated Garden Buildings come with a 15 year anti rot guarantee. Pressure treating is a chemical process which helps to protect wood against rot and insect damage. There are many different treatment solutions, the most common chemicals used to pressure treat wood are Alkaline Copper Quaternary (ACQ), Copper Azole (CA), and Micronized Copper Quaternary (MCQ).

Safety: When handling pressured treated timber, be sure to wear gloves and avoid inhalation of sawdust. Do NOT use in contact with food and drinking water or as animal bedding. Dispose of treated wood responsibly, industrial waste should be disposed of through an authorised waste contactor.

Always wear gloves, eye protection and a dust mask when handling wood. Due to chemicals in pressure treated wood, never burn its sawdust or scraps; instead dispose in a landfill.

In order to keep your building looking great, it will need re-treating at least annually. Always use a high quality waterproofing topcoat, applied in accordance with the the manufacturer's instructions. If left untreated the colour will fade from green to silvery grey in approximately 6 months. 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.


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

Imperial Size (ft)12 x 5
People Req'd To Build2
Framing45mm x 28mm
Anti-Rot Guarantee15 years
Cladding StyleShiplap Tongue & Groove
Roof Material9mm Solid Sheet Board
Floor Material9mm Solid Sheet Board
Roof TypePent
Door StyleDouble Door
Building TypeStorage Sheds
Treatment TypePressure Treated
Metric Size (Meters)3.6 x 1.5
Under 2.5m TallYes
Width 12' 0" 3.66m
Depth 4' 9" 1.45m
Eaves Height 5' 8" 1.73m
Ridge Height 6' 9" 2.06m
Door Width 3' 6" 1.07m
Door Height 5' 6" 1.68m
Internal Width 11' 5" 3.48m
Internal Depth 4' 3" 1.30m

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 the Republic of Ireland, some areas of Scotland and any offshore islands. If you are unsure then please use the postcode checker 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 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.

Delivery on this building is 10 working days to most addresses.

After you have placed your order one of our team will contact you directly to arrange a suitable delivery date.

Important - Delivery is kerb side only, though at the driver's 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.


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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: 07-Mar-2019
Review:It’s definitely a good product.
Our Reply:Good morningThank you for taking time to leave your feedback, we take all feedback very seriously.
It is good to know that you are happy with your product.
Kind regards
Maryjess, Waltons Team
Date: 02-Oct-2018
Review:Very good quality. Overall 10 out of 10.
Our Reply:Good morning

Thank you for leaving feedback regarding your recently purchased item. We do take all feedback seriously and it is very good to know that you are happy with your purchase.

Kindest regards
Maryjess, Waltons Team
Date: 01-Jan-2018
Review:Shed is ok OSB floor is poor, weak
Our Reply:Good afternoon,

We're glad to hear that you are happy with your overall shed but sorry to hear that your OSB floor is weak. If we can advise on this in anyway or offer a floor support pack please do not hesitate to let us know. Our office line is 01636 880514.

Date: 15-Jul-2017
Review:The packing blocks on the edge of the panels were nailed in by ribbed nails and so far in macking it very hard to remove them before building the shed, The nails in the shed floor were sticking up so i had to knock them all down.
Our Reply:Good afternoon,

I am sorry to learn of the issues that you experienced and I ask that you contact us on either 0800 029 1000 if you need help resolving these. I am glad you are happy with you tongue and groove shed overall and thank you again for your positive feedback.

Date: 12-Jun-2017
Review:If I could give 4.5 stars I would. The only detail that slightly let this shed down is the OSB floor. In my opinion it is a bit too thin and I think I will be adding some planks to make it sturdier. Apart from that the instructions are clear and the shed goes together quite easily. Make sure you have 2 drills,...
Our Reply:Good morning,

I am so pleased that you are happy with your tongue and groove shed and that easy to follow instructions led to a straight forward assembly. We take your comments on board as we are always looking for ways to improve. Thank you again for your positive...
Date: 14-May-2017
Review:Well designed and clear simple assembly instructions.
Our Reply:Good afternoon,

It is great to know that you are pleased with the quality and design of your greenhouse. We are always striving to make our instructions easy to follow and I am glad you found this to be the case. Thank you for your feedback.

Kindest regards,
Kirstie - Waltons Team
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Open: Mon-Fri: 8:30am - 5pm

Phone: 0800 029 1000*