1. Select Size

Size measured in feet

2. Select Treatment

2. Personalise your summerhouse

11mm Tongue and Groove

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 Tongue and Groove

1.7 times thicker than our standard 11mm flooring, our 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.

Mineral felt

Quick and easy to apply, Mineral felt is durable and protects the building against the elements. The mineral felt is also more durable than traditional sand felt, meaning that it does not need to be regularly replaced, making it a long term, cost effective option.

EPDM Roof Covering

EPDM is a rubber based polymer that is fast and easy to install. It is a great alternative to felt and other roofing solutions, It is resistant to ozone and UV radiation while still being weatherproof and less affected by temperature changes. This option provides a more durable covering for your building while giving a stylish black look to the roof.

3. Add optional extras

Discover our range of BillyOh accessories that allow you to customise your very own garden building to very last detail.

Dimensions

  • Strong Tongue and Groove build
  • Extra tall construction
  • Dual double door
  • Long, styrene glazed windows
  • Pressure treated options available
  • 11mm Tongue and Groove Floor and Roof
  • Changeable panels to suit your garden
  • Complete with felt, fixtures and fittings
  • Base Coat Treated for Transit
Overall Dimensions (Includes Overhang)
image
  • (A) Width: 3.58m (11ft9)
  • (B) Depth: 3.18m (10ft5)
  • (C) Ridge: 2.47m (8ft1)
  • (D) Eaves: 1.73m (5ft8)

Why buy the Tessa?

BillyOh<br/>Guarantee
BillyOh
Guarantee

Protects the wood on your building against rot and decay.

UK<br/>Manufactured
UK
Manufactured

Over 20 years of experience in design and production.

Extra<br/>Head-Height
Extra
Head-Height

Crouch free design, giving you the ultimate space.

Complete<br/>Building
Complete
Building

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

What is it made from?

European Sourced Timber

Our carefully sourced timber is purposely selected to ensure dependable quality, creating a robust and reliable building.

Durable Tongue & Groove

The Tongue and Groove boards interlock with one another to form a tight seal offering high quality weather protection.

Green Mineral Felt

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

Galvanised Ironmongery

Heavy duty hinges, latches and handles included, galvanised for maximum weather protection.

Shatterproof Glazing

Durable Single SAN glazing included as standard.

Adaptable Configuration

Configure how you like, with our adaptable door placement design.

And much more…

  • Stylish reverse apex design
  • Long windows for light
  • Adaptable dual entrance
  • Attention to detail
  • Easy to build
  • Spacious interior
  • Floor and roof included
  • Green mineral roof felt
  • Shatter resistant windows
  • Pressure treated lasts longer
  • Protected during delivery
  • Fixtures and fitting included
  • Full assembly instructions
  • 20 years experience

Frequently Asked Questions

Below you'll find answers to the questions we get asked the most about our products.

EXPAND ALL COLLAPSE ALL

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 Roof

  • 11mm Tongue & Groove Floor

  • Single glazed fixed windows (amount depends on size)

  • Single glazed double doors

  • Green mineral roof felt

  • All fixtures and fittings

  • Comprehensive assembly instructions

Spray Treated: Our sheds and summerhouses get a beautiful golden brown spray treatment before leaving the factory in order to preserve the quality of the wood up until the delivery. As this only lasts through the transit stage, we do advise treating the wood after installation to protect and preserve it, as well as annual maintenance.

Pressure Treated: For an extra level of protection, you can opt for a pressure treated building which is an effective way of keeping the wood long lasting. This is an extra step in the manufacturing process where the wood is treated in a pressurised tank. Chemical preservatives are forced deep into the wood’s fibres to resist rot, decay and termites. When you upgrade to Pressure Treatment, the guarantee is extended from 10 to 15 years.

With the Tessa an 11mm tongue and groove floor and roof is included.

Roof:

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.

Floor:

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.

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.

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!

We do not offer an installation service on any of our buildings, our buildings are designed & made to be easy and simple to assemble. Using the assembly instruction included and with a team of just 2 people and a bit of DIY knowledge you can expect to have your BillyOh building up within a day, or as little as 3-4 hours with some of our smaller buildings.

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.

Dimensions 12 x 10 16 x 10 12 x 10 Pressure Treated 20 x 10 16 x 10 Pressure Treated 20 x 10 Pressure Treated
Width 358.2cm 475.4cm 358.2cm 592.6cm 475.4cm 592.6cm
Depth 318.3cm 318.3cm 318.3cm 318.3cm 318.3cm 318.3cm
Width (Internal) 346cm 463.2cm 346cm 580.4cm 463.2cm 580.4cm
Depth (Internal) 293cm 293cm 293cm 293cm 293cm 293cm
Ridge Height (Inc Floor) 247cm 247cm 247cm 247cm 247cm 247cm
Eaves Height (Inc Floor) 173.2cm 173.2cm 173.2cm 173.2cm 173.2cm 173.2cm
Ridge Height (Internal) 242.4cm 242.4cm 242.4cm 242.4cm 242.4cm 242.4cm
Eaves Height (Internal) 175.4cm 175.4cm 175.4cm 175.4cm 175.4cm 175.4cm
Door Opening Size (w x h) 114.8cm x 163.9cm 114.8cm x 163.9cm 114.8cm x 163.9cm 114.8cm x 163.9cm 114.8cm x 163.9cm 114.8cm x 163.9cm
Door Width 58.3cm 58.3cm 58.3cm 58.3cm 58.3cm 58.3cm
Door Height 164.5cm 164.5cm 164.5cm 164.5cm 164.5cm 164.5cm
Minimum Base Width 358cm 475cm 358cm 593cm 475cm 593cm
Minimum Base Length 318cm 318cm 318cm 318cm 318cm 318cm
Window Dimensions 50.6cm x 125.3cm 50.6cm x 125.3cm 50.6cm x 125.3cm 50.6cm x 125.3cm 50.6cm x 125.3cm 50.6cm x 125.3cm
Glazing Thickness 0.12cm 0.12cm 0.12cm 0.12cm 0.12cm 0.12cm
Frame Thickness (w x d) 2.8cm x 2.8cm 2.8cm x 2.8cm 2.8cm x 2.8cm 2.8cm x 2.8cm 2.8cm x 2.8cm 2.8cm x 2.8cm
Materials 12 x 10 16 x 10 12 x 10 Pressure Treated 20 x 10 16 x 10 Pressure Treated 20 x 10 Pressure Treated
Glazing Material Styrene Styrene Styrene Styrene Styrene Styrene
Floor Material 11mm Tongue and Groove 11mm Tongue and Groove 11mm Pressure Treated Tongue and Groove 11mm Tongue and Groove 11mm Pressure Treated Tongue and Groove 11mm Pressure Treated Tongue and Groove
Roof Material 11mm Tongue and Groove 11mm Tongue and Groove 11mm Pressure Treated Tongue and Groove 11mm Tongue and Groove 11mm Pressure Treated Tongue and Groove 11mm Pressure Treated Tongue and Groove
Features 12 x 10 16 x 10 12 x 10 Pressure Treated 20 x 10 16 x 10 Pressure Treated 20 x 10 Pressure Treated
Windows 6 Windows All Fixed 8 Windows All Fixed 6 Windows All Fixed 10 Windows All Fixed 8 Windows All Fixed 10 Windows All Fixed
Factory Basecoat Treatment Red Cedar Water Based Treatment for Transit Red Cedar Water Based Treatment for Transit Pressure Treated Red Cedar Water Based Treatment for Transit Pressure Treated Pressure Treated
Shed Type Summer House Summer House Summer House Summer House Summer House Summer House
Roof Style Reverse Apex Reverse Apex Reverse Apex Reverse Apex Reverse Apex Reverse Apex
Cladding Style Tongue and Groove Tongue and Groove Tongue and Groove Tongue and Groove Tongue and Groove Tongue and Groove
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.