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BillyOh Master Tongue and Groove Pent Shed

The BillyOh Master Tongue and Groove Pent Shed serves as an ideal storage building with a strong, durable T&G build. With a stylish and modern look it's sure to fit in any space. Complete with Floor, Roof and Felt as standard.

1. Select Size

Size measured in feet

2. Select Treatment

Spray Treated

Treated with a beautiful golden brown spray treatment which colours and protects the wood during transit. Designed to last through shipping and assembly, we do recommend treating the wood after installation to protect and preserve it, as well as annual maintenance.

Pressure Treated

An effective way of keeping the wood long-lasting and increasing the longevity of your building. In a pressurised tank, chemical preservatives are forced deep into the wood’s fibres to resist rot or decay. Upgrading to Pressure Treated means the guarantee is extended from 10 to 15 years. Please note Pressure Treatment gives your wood a slightly green hue to begin with, but over time this will age and turn to a beautiful warm brown colour.

2. Personalise your shed

3. Add Extras

Complete your building with optional shelving, guttering, base options, assembly kits and more.

The padlock is a 65mm long shackle which is a high quality security lock with brass finish. The steel hasp and staple is 169mm and is made from electro hardened galvanised steel. It is also supplied with recessed and concealed fittings.

The Silicon and Gun Set uses a silicone sealant which prevents mould and fungal growth and comes complete with a skeleton gun as standard. This product is ideal for sealing in the windows of your garden building!

This is a low cost, convenient solution, perfect if you don't already have your own tools. This kit includes: Hard point saw, Safety goggles, Paint brush, Pocket level, Claw hammer, Rigger gloves.

This unique hasp & staple type shield offers a high level of security by reducing the exposed area of a padlock to the bare minimum. Specifically designed to prevent unwanted entry being gained to sheds, garages & workshops by protecting against break-ins.

Optional Extras:
Total Price:


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  • Tongue & Groove walls for added strength and durability
  • Wide opening double doors for easy access
  • Optional Shelving for extra vertical space
  • Modern pent roof design for optimal water run-off
  • 11mm Floor & Roof as standard
  • Complete with felt, fixtures and fittings
  • Base Coat Treated for Transit
Overall Dimensions (Includes Roof Overhang)
  • (A) Width: 1.24m (4ft1)
  • (B) Depth: 1.89m (6ft3)
  • (C) Height: 1.82m (6ft)
Master Pent Shed
10 Year<br/> Anti-Rot Guarantee
10 Year
Anti-Rot Guarantee

Protects the wood on your building against rot and decay.

UK<br/> Manufactured

Over 20 years of experience in design and production.

Easy to<br/> Assemble
Easy to

Quicker and easier to build, the Master Pent is delivered in handy pre-assembled panels.

Complete<br/> Building

11mm Tongue and Groove roof, floor and green mineral felt roof covering.

Master Pent Shed

Master Pent Shed

Key Features

Strong Tongue and Groove Construction

The shed is a solid, interlocking structure made from 11mm Tongue and Groove cladding, constructed using high-quality timber panels that interlock together. Tongue and Groove cladding creates a strong, stable and weatherproof structure with a stylish finish.

Wide Double Doors

Featuring a wide double door, the Master Pent’s accessible and convenient entrance allows you to fit large furniture or workshop items with ease.

Windowless Design

The windowless tongue and groove panels provide peace of mind when it comes to privacy, allowing you to store all your tools and equipment without worrying about security.

Modern Pent Roof

The pent roof makes a contemporary addition to any garden, offering plenty of headroom as well as optimal drainage.

Ultimate Tool Shed

Heavy-duty and hard-wearing boards provide a safe and secure shed for all your DIY needs. With privacy and protection for expensive and important tools and items.

Green Mineral Felt

Quick and easy to apply, our premium mineral felt is durable and protects your building against harsh weather.

Master of All Trades

Master of All Trades

Discover the Master Pent Shed, perfect for craftspeople and DIY lovers. Crafted with precision tongue and groove cladding, the Master Apex is durable and easy to assemble. With wide double doors, accessing tools is effortless, while the tall pent design provides generous headroom for comfortable movement. Elevate your craftsmanship in this versatile workspace.
Security & Privacy

Security & Privacy

Prioritising the safety of your belongings, the Master Pent’s windowless design offers enhanced security. The durable tongue and groove walls ensure longevity while with optimal drainage features, your belongings stay protected from moisture. Safeguard your tools and belongings in this reliable and discreet storage solution

What Accessories Do I Need?

Paints and Treatments
Paints and Treatments

Give your building the look it deserves - or simply give it an extra layer of treatment to keep it in great shape. We have a wide range of paint colours and timber treatments available. Simply explore our collection.

Wooden Shelving Unit
Wooden Shelving Unit

Make use of the vertical space afforded by your building with these handy shelving units. Available in two sizes, you can buy as many shelves as you need, with the units themselves specially designed to fit with BillyOh buildings. Use them as a place to keep tools, boxes, toys and more.

from £7.00
Gutter System
Gutter System

Ensure your shed is getting great drainage with our flexible guttering addition. Simple to assemble and with a universal fit to any shed or building with its screw-on design. Comes with a downpipe to effectively channel rainwater.

from £59.00
BillyOh Ecobase Foundation
BillyOh Ecobase Foundation

Give your building the foundation it deserves with the Ecobase. A versatile plastic base, the Ecobase is available in a wide combination of sizes with its connectors to tailor to the building you’ve bought. Made from recycled plastic, you can fill with gravel to allow for natural drainage.

from £39.53
Deluxe Padlock and Hasp
Deluxe Padlock and Hasp

Stay secure with the deluxe padlock and hasp combination. Screws, hasp, shackle, and padlock with key all included. Easy to install and ensures your building is kept safe from intruders. Padlock protector is also available.

from £2.30

Frequently Asked Questions


The BillyOh guarantee covers this building against:

  • rot
  • decay
  • insect infestation

Please note: The guarantee does not cover timber splits or warping which may occur naturally over time.

Duration of Guarantee:

  • Tongue and Groove Buildings - up to 10 years
  • Log Cabins - up to 10 years
  • Pressure Treatment Buildings - up to 15 years

For more information about BillyOh Guarantee, please visit our terms and conditions

  • 11mm Tongue & Groove wall panels

  • 11mm Tongue & Groove Floor

  • 11mm Tongue & Groove Roof

  • Green mineral felt

  • All fixtures and fittings

  • Comprehensive assembly instructions

Our sheds and summerhouses get a beautiful golden brown spray treatment before leaving the factory in order to preserve the quality of the wood. As this only lasts through the transit stage, we do recommend treating the wood after installation to protect it.

Constructed from thick panels which interlock together, tongue and Groove creates a strong and stable structure that is designed to offer protection against the elements. This method of construction provides you with a strong and dependable building which is built to last.

All sheds, excluding overlap, standard summerhouse, playhouses etc are made of 11mm thick cladding.

With the Master Pent an 11mm tongue and groove floor and roof is included but you can upgrade to 19mm to suit more intensive use.


11mm: Our standard roof option, this interlocking roof provides a reliable covering for any building. The Tongue and Groove not only gives your building a stronger roof but also a premium look and feel.


11mm: Our Standard flooring option which provides a durable, solid foundation and underfoot to the building. The 11mm option is ideal for less demanding and frequent usage, suitable for lighter intensity purposes like summer houses and other living spaces containing light furniture. The 11mm tongue and groove timber makes this a solid yet suitable, economical option.

19mm: A premium floor is the perfect choice for higher intensity usage. The construction uses thick 19mm tongue and groove timber, which gives you not only the strength, but better insulation against the cold weather. This specific floor is the perfect option if you’re planning on using the building as an everyday use office, gym or games room with heavy objects.

All garden buildings should be assembled on a firm and level base. A base will ensure your building has a solid, long-lasting and well-drained foundation.

If you want to build your own base, from a sturdy material such as concrete or flagstones, you can find minimum dimensions for each size of this building in the tech specs. In order to protect your building from moisture, you should leave a 2ft gap around the exterior of your building, so remember to take this into consideration when laying any sort of base.

Our robust and simple to use EcoBase provides you with a firm, long-lasting foundation with suitable drainage for your garden building. It is quick and easy to install through the use of snap connectors that link the grids to each other.

If the building is shorter than 2.5m tall you should not require planning permission, (unless it’s more than 50% of your garden or to be put in your front garden). Planning permission rules can vary by area so we would strongly recommend checking your local council rules before ordering from us.

We do not offer an installation service on any of our buildings, as they are designed to be easy and simple to assemble. Using the digital assembly instructions included in your order confirmation and with a team of at least 2 people, the handy pre assembled panels mean you will have your BillyOh building up in no time!

Our sheds and summerhouse are delivered in easy to assemble panels. For your convenience the panels are no wider than 4ft so they can be easily maneuverable and fit through a standard doorway. Glazing and any additional wood is delivered in separate, clearly labeled packages.

Your order can be tracked through the account section on our website or by contacting us directly. You will be contacted after your order via your online account, email or text to provide updates on delivery dates.

We offer a pay by finance option on any purchase over the value of £560.

Our simple finance options allow you to spread the cost of your purchase over 24, 36 or 48 months.Read more about our Pay by Finance option here.

BillyOh Master Pent Shed

The master pent works as an ideal garden storage shed, and with sizes ranging from a 4x6 to a 12x6 shed, you can choose the perfect size for your garden and storage needs. This pent shed is windowless to provide increase privacy and security. The pent roof also offers a tall and accessible entrance with increased headroom at the front and a modern style.

Smaller buildings are great for use an outdoor bike shed, BBQ storage, or garden tool shed. Larger buildings like a 12x6 pent shed offer you more space and better access to all of your possessions and the possibility of using your shed as a garden studio or even a workshop. Shed shelves are a great addition to this building, increasing your vertical storage capabilities and making the most of the wall space and height.

This storage solution comes with an 11mm tongue and groove roof, and floor included as standard, giving it strong and durable construction. The floor can also be upgraded to a more robust 19mm floor. To increase the strength of your building further, we offer a pressure treatment service that will improve the weather resistance of the building while also increasing your BillyOh Guarantee to 15 years. All sizes of this building include green mineral felt as standard to help keep your items clean and dry.

Garden Sheds (Storage Sheds)

With wide-opening double doors, this range of garden sheds is perfect for taking garden equipment in and out of storage. Plus, the Master Pent's design makes it ideal for use as a windowless security shed for more expensive items.

Pent Design Roof Style

The pent roof design features no roof overhang unlike an apex or reverse apex model, yet allows for adequate runoff due to the sloping single plane construction. Pent roof sheds offer a more modern and contemporary silhouette and this pent shed includes green mineral roof as standard for further weatherproofing.

External Cladding

The Master Pent utilises a durable tongue & groove timber cladding style for the premium floor, roof, and walls. Tongue and groove cladding can be upgraded as just one of the many optional extras available with this quality product. The Master Pent also features galvanised steel ironmongery for all hinges, latches and fixings to prevent against rust and corrosion.

Assembly Kits and Foundation

Your Master Pent shed will be provided with comprehensive assembly instructions. Simply set out a solid base and grab a friend and you can have your pent shed up in a matter of hours. A level base might include the Eze Base, Ecobase or bearers that are available as extras with this purchase, or your own concrete base.


Our BillyOh tongue and groove sheds come with a 10-year guarantee protecting this building against rot, insect infestation, and decay. Pressure-treating this model increases the overall protection and thus, this guarantee to 15 years.

Planning Permission

The ridge height and eaves height of the Master Pent are built with UK planning permission rules in mind. As such you won't require planning permission for the Master Pent due to its height. We suggest you check local council rules for any other stipulations.

Garden Buildings Direct - Delivery

Get your garden building sooner rather than later with our fast and free delivery service to most of mainland UK. You can have you BillyOh building in as little as 2 - 5 weeks! What are you waiting for?

Dimensions 4 x 6 8 x 6 10 x 6 12 x 6
Width 123.8cm 241cm 299.6cm 358.2cm
Depth 189.4cm 189.4cm 189.4cm 189.4cm
Eaves Height (Inc Floor) 151.7cm 151.7cm 151.7cm 151.7cm
Eaves Height (Internal) 151.1cm 151.1cm 151.1cm 151.1cm
Ridge Height (Internal) 175.4cm 175.4cm 175.4cm 175.4cm
Eaves Height (Excl Floor)
Ridge Height (Inc Floor) 181.7cm 181.7cm 181.7cm 181.7cm
Door Opening Size (w x h) 97.3cm x 164.2cm 97.3cm x 164.2cm 97.3cm x 164.2cm 97.3cm x 164.2cm
Ridge Height (Excl Floor)
Door Height 170cm 170cm 170cm 170cm
Door Width 47.9cm 47.9cm 47.9cm 47.9cm
Width (Internal) 111.6cm 228.8cm 287.4cm 346cm
Depth (Internal) 175.8cm 175.8cm 175.8cm 175.8cm
Minimum Base Width 119cm 237cm 295cm 354cm
Minimum Base Length 184cm 184cm 184cm 184cm
Materials 4 x 6 8 x 6 10 x 6 12 x 6
Roof Material 11mm Tongue and Groove 11mm Tongue and Groove 11mm Tongue and Groove 11mm Tongue and Groove
Floor Material 11mm Tongue and Groove 11mm Tongue and Groove 11mm Tongue and Groove 11mm Tongue and Groove
Roof Covering Material Green Mineral Felt Green Mineral Felt Green Mineral Felt Green Mineral Felt
Features 4 x 6 8 x 6 10 x 6 12 x 6
Cladding Style Tongue and Groove Tongue and Groove Tongue and Groove Tongue and Groove
Windows N/A - Windowless N/A - Windowless N/A - Windowless N/A - Windowless
Factory Basecoat Treatment Red Cedar Water Based Treatment for Transit Red Cedar Water Based Treatment for Transit Red Cedar Water Based Treatment for Transit Red Cedar Water Based Treatment for Transit
Material Wood Wood Wood Wood
Locking System Turn Button Turn Button Turn Button Turn Button
Pre-Assembled Side Panels Yes Yes Yes Yes
Roof Style Pent Pent Pent Pent
Please Note: This product has been designed as an affordable solution to most popular light domestic uses. All products supplied self assembly flat packed unless otherwise stated.