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BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

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 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.

3. Add Extras

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

Do you need high quality padlocks, paint, silicone and assembly kits?

Just Bearers

Designed to be used on top of an existing solid, level base such as concrete or slabs. Pressure treated bearers are a simple and affordable solution to keep your building raised off the ground and away from any standing water, which can cause your building to rot or decay prematurely.

Eze Base

A wooden frame made from pressure treated bearers, designed for soft ground such as soil or gravel. It has a spike in each corner to help secure it to the ground. This base ensures your garden building has a rigid, level base.

Eco Base

An alternative to using a concrete base or slabs. A grid system made from recycled plastic which can be filled with gravel to create a sturdy base for your building.

Shelving is a great way of increasing the usable space in your building by giving you another storage level. Whether your building is for tools, gardening equipment or your own personal workshop shelving will help you keep a tidy, organised space. Depending on which option you choose, your shelving will cover one side, two sides or all around. Each shelf is 21cm deep and can be placed at any height.
Keep rainwater away from the walls with one of our guttering systems. Protect your building from harsh weather conditions and water damage with these great yet simple solutions. Single sided guttering is great for smaller buildings or upgrade to dual gutters for increased protection on larger buildings. Collect the rainwater and use it to water your garden as a cheap and more economical option.

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:
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APR representative 14.9%
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Dimensions

  • Strong 11mm Tongue & Groove walls
  • Tall reverse apex design with generous headroom
  • Long, styrene glazed windows for natural light
  • 4ft wide opening double doors for ease of access
  • 28x28mm framing for added strength and stability
  • Timber floor joists to provide a sturdy support on your shed base
  • Premium 11mm Tongue & Groove floor & roof
  • Variable door positioning to suit your needs
  • Mineral roofing felt for added protection
  • Base Coat Treated for Transit
Overall Dimensions (Includes Roof Overhang)
image
  • (A) Width: 3.00m (9ft10)
  • (B) Depth: 2.60m (8ft6)
  • (C) Ridge: 2.34m (7ft8)
  • (D) Eaves: 1.73m (5ft8)

What you need to know about the

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

A Modern Design Reverse Apex Building

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
11mm Tongue & Groove Sections
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Tongue & Groove M&T Door - Double
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Pressure Treated Option
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Comprehensive Assembly Instructions
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Optional Customer Pre-assembled Roof
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Optional Pre-assembled Floor
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
Optional Heavy Duty Roof with Additional Trusses

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse Key Features

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

T&G Panel Construction

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Customisable Options

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Modern M&T Constructed Doors

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Modern Window Option

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Wide Frontage Reverse Apex

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Stronger T&G Roof Cladding Option

Modern-Style Reverse Apex Summerhouse

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse
BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Heavy-Duty Tongue & Groove Build

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Tallest Reverse Apex Increased Headroom

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Multiple Size Options Available

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Pressure Treatment Available For Low Maintenance

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Modern-Designed Windows and M&T Double Doors

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Weatherproof Roof Cover Options

*Shingle tiles are available on the 11mm T&G Standard and 11mm T&G Heavy Duty roof options only.

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Solid Double-braced Truss Support

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Premium Roof Options

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

Floor Options to Suit Different Uses

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

And there’s more...

BillyOh Petra Tongue and Groove Reverse Apex Summerhouse

What's Included


  • Optional Pre-Assembled Floor: (9mm OSB, 10mm Solid Sheet, 11mm TG, 11mm
  • Pressure Treated TG, 19mm Pressure
  • Treated TG, 19mm TG)
  • Optional Pre-Assembled Roof:(9mm OSB, 8mm Solid Sheet,11mm TG)
  • Optional Heavy Duty Roof Includes
  • Additional Trusses
  • Optional Felt Options: Sand or Mineral
  • Optional Shingles: Shingles + Sand felt Capping
  • Optional Pressure Treated
  • 11mm T&G Sections
  • T&G Door - Double
  • Fixtures and Fittings
  • Comprehensive Assembly instructions

BillyOh Petra Summerhouses

The Petra is a bright building with windows across the front and double side windows. The tall windows and doors are glazed with shatter-resistant SAN giving you fantastic views and natural light without the worry of glass.


This wooden summer house lends itself to customisation, and with the range of sizes, you can choose the best one to suit your garden. With only one side having windows, it couldn’t be easier to place your Petra to the side of a garden or patio, making it a fantastic corner summerhouse. Due to the natural light and views given by the windowed front wall, the Petra has many uses and would work great as a home office, summerhouse bar, garden studio or decorate it with all your home accessories to create a relaxing home away from home.


The Petra comes with a beautiful golden spray treatment which can be upgraded to pressure treated for longevity. Your Petra can also be painted as many of our customers have done to match your chosen aesthetic. Please see our customer images for inspiration on what you could do with your garden summer house.


Sizes


This BillyOh building comes in a selection of sizes from 10x8 to 20x10. Our wide range of base sizes for the Petra reverse apex summerhouse is designed to be suitable for all types of gardens and budgets.


Design


The reverse apex design offers increased head height and lends itself to an everyday use office or relaxation room. Apex and reverse apex roof styles are typical in more traditional summerhouses and offer excellent water runoff.


We believe the Petra offers the perfect space for use as a home office or a cosy space to relax at the end of the day. Whatever you use it for, make the most of your outdoor space with a BillyOh Petra summerhouse.


Double Doors


Perfect for opening up during summer parties or on hot days, this traditional take on a contemporary summer house offers wide-opening double doors. There are a whole host of other customisable options including treatment and roofing upgrades.


Treatment


Our garden buildings feature options for trim colours for personal preference - for an alpine shade, opt for a light green, perhaps. We also offer pressure treatment as an optional wood treatment on the Petra summerhouse. This will increase its longevity and your BillyOh guarantee to 15 years against rot, decay, and insect infestation. Green mineral roof felt is included as standard.


Tongue and Groove Cladding


We use high-quality European-sourced summerhouse timber constructed in tongue and groove panels for this model. The Petra is designed for summer but also to stand up to even harsh weather conditions, where tongue and groove timber offers dependable quality and a tight seal.


Tongue and groove construction also gives you the option, for example of varying floor cladding thickness. You can customise your Petra and create an even more weather resistant garden building with sturdy construction, courtesy of our tongue and groove panelling.


Guarantee


On non-pressure treated models, we offer our BillyOh 10-year guarantee against rot and insect infestation. Summer house moisture and ability of moisture to rising in the form of damp make pressure-treating even our high-quality European sourced timber a worthwhile investment.


Planning Permission


Always make sure to double-check your local council rules, but generally planning regulations will allow you to build your Petra summerhouse without permission, if:


  • It is not intended for use as permanent living quarters
  • The eaves height after under 2.5m (the Petra's are 1.73m)
  • The ridge height is under 4m (the Petra's is 2.34m)
  • It is not two-storey
  • It isn't larger than 50% of the area of your garden
  • It isn't built past the front wall of your house

With some basic tools and the assembly instructions provided with your order, you and a friend can have your Petra built in no time. We always suggest mounting your garden building on a sturdy and level footing, like a concrete base.


Customers


And if you want to see how other Garden Buildings Direct customers got on with their Petra summerhouse, check out our customer stories for summer house ideas.


Delivery


Get your Petra wooden summer house with our fast and free delivery service to most of mainland UK in just 1 - 4 weeks. And if you have any more questions, check out our FAQs or get in touch with our friendly team today.