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TGB Security Apex (STORM) Shed *ASSEMBLED*

TGB Security Apex (STORM) Shed *ASSEMBLED*

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TGB Security Apex (STORM) Shed *ASSEMBLED* TGB Security Apex (STORM) Shed *ASSEMBLED* TGB Security Apex (STORM) Shed *ASSEMBLED*

Product Code [TGBSECA0404]

Our Price: £879.00

Door Type
Door Layout
Glass Windows
Extra Preservative
Delivery Options
FREE Installation

5 Stars Read all customer reviews


TGB Security Apex (Storm-Braced) Shed

The TGB Security Apex Shed is a high quality, wooden, apex-roofed shed made with security in mind. The TGB Security Apex is a traditionally built British shed, featuring a high level security window, heavy-duty galvanised bolted hinges, padlock protector, and lots of framing for strength. The TGB Sheds Security Apex is available in 11 popular sizes - 4x4 up to 12x8, all featuring the same level of strength and security, with an unbeatable price.
Current Brochure DownloadOur TGB Sheds product range is second to none, featuring hundreds of great quality buildings, accessories and optional extras, however it is difficult to show everything fully on a single web page. We are an OFFICIAL PREMIER STOCKIST of all TGB products, therefore you are welcome to visit our Edinburgh display site to see the buildings in person. Alternatively, you can download the latest PDF brochure... just click on the link to the right.


  • FREE delivery*
  • Professionally INSTALLED IN YOUR GARDEN*
  • FREE preservative treatment
  • Brown finish
  • Narrow security window for light
  • Heavy Duty galvanised hinges (security bolts stop door being unscrewed)
  • Security bolted padlock protector
  • Internal framing at 12" intervals for strength
  • 16mm nominal (12mm finish) tongue & groove shiplap cladding
  • High quality, slow growing Scandinavian timber
  • T&G floor and roof
  • 11x sizes from 4x4 up to 12x8
  • Bespoke options available

Quality Construction

This garden building is manufactured using high quality, slow-growing, sustainable Scandinavian Pine from well managed FSC or PEFC CERTIFIED forests. All models are constructed using 16mm nominal (approx. 12mm finished) tongue and groove shiplap timber walls, along with tongue and groove roofs and floors, however this can be upgraded to a massive 22mm nominal thickness (approx. 18mm finished) if required. Please note that NO chipboard or OSB is used in the construction of ANY TGB building. These TGB buildings are supplied pre-treated with an Eco-Friendly light brown preservative basecoat. Strong, smoothed, rounded and planed framing has been used internally, which is doubled at the corners for extra strength. Mineral roofing felt is supplied to keep the roof watertight.

Our storm-braced sheds are very strong, and all have diagonal internal framing on the walls to help the building withstand the effects of storm-force winds. Unfortunately mother nature can be very cruel at times, therefore we aren't able to guarantee any shed against extreme weather conditions, however these buildings will definitely last much longer than standard models.


TGB garden buildings are supplied pre-treated with a quality brown, non-toxic preservative base coat. This ensures that your garden building is ready to accept any preservative colour of your choice. Alternatively we can supply them made from long-lasting Tanalised pressure-treated timber with a 15-year anti-rot warranty, or you can have your building factory-painted in a choice of 12x popular colours (maximum 2x colours per building). These look great, and don't require any additional painting immediately... please contact us for details.

Brown PreservativeTanalised Pressure-treated PreservativePaint Colour Options


Doors, Locking System & Windows

A fully-framed and braced, heavy-duty single door (762mm wide) is supplied complete with heavy-duty, security-bolted galvanised hinges, and a padlock protector as standard. This building features a narrow glass window (1220mm x 150mm) for light and security. The door can be positioned anywhere around the building, however this must be decided at the time of order. Please choose from one of the following positions:


Professional Assembly Included

We will install your TGB garden building at NO ADDITIONAL CHARGE although some geographical limitations apply. Our PROFESSIONAL ASSEMBLY SERVICE covers approx. 90% of the UK mainland population, and requires non-restrictive access and a suitable base/site.

DIY Assembly Video

Assembling your building yourself can be very satisfying and it has several advantages: you probably won't have to wait as long for delivery, you can assemble it on a day suitable to you, you can pre-treat the panels beforehand allowing the best possible protection for your building, and we may even be able to offer you an additional discount so you'll save even more money! TGB Sheds, Playhouses and Summerhouses come with all the fixings and fastenings you need, but to make things even easier, here is an installation video that you can follow showing the assembly of a typical TGB building.



Optional Extras

This garden building is supplied as a full kit, complete with all necessary fixings, fastenings, glazing and roofing materials. Optional extras include professional assembly, framing and wall thickness upgrades, double doors, thicker roofing felt, heavy flooring, log-lap cladding, toughened glass etc. The building can also be made to a bespoke size or configuration... please call for details.


Please contact us prior to purchase if you have any queries regarding the dimensions, or if you require exact sizes. Roof overhangs will extend beyond the Body Size shown below (all dimensions are finished sizes).
Model Frame Body Size (mm) Height (mm)  Single Door Fixed Window
TGB Security Apex Shed (mm) Length Depth Eaves Ridge Height** Width Width Height
4x4 TGBSECA0404 44x32 1219 1219 1864 2190 1805 762 1220 150
6x4 TGBSECA0604 44x32 1829 1219 1864 2190 1805 762 1220 150
6x5 TGBSECA0605 44x32 1829 1524 1864 2260 1880 762 1220 150
7x5 TGBSECA0705 44x32 2438 1524 1864 2260 1880 762 1220 150
6x6 TGBSECA0606 44x32 1829 1829 1864 2350 1880 762 1220 150
8x6 TGBSECA0806 44x32 2438 1829 1864 2350 1880 762 1220 150
10x6 TGBSECA1006 44x32 3048 1829 1864 2350 1880 762 1220 150
12x6 TGBSECA1206 44x32 3658 1829 1864 2350 1880 762 1220 150
8x8 TGBSECA0808 44x32 2438 2438 1864 2475 1880 762 1220 150
10x8 TGBSECA1008 44x32 3048 2438 1864 2475 1880 762 1220 150
12x8 TGBSECA1208 44x32 3658 2438 1864 2475 1880 762 1220 150

**Due to framing constraints, the door height may reduce when choosing position B,C or D.Please contact us prior to purchase if you have any queries regarding the dimensions. Sizes shown above are finished sizes (not nominal), however you should note that the roof will extend beyond the Body Size shown above. Information shown above has been supplied by the manufacturer, and is as accurate as possible (errors and omissions excepted), however it is intended only as a guide. This high quality building has an expected lifespan well in excess of 15-years. We recommend that you install the building on a solid, free-draining base, with at least 60cm free space all around for maintenance and to avoid splashback. You should treat all sections with a high quality, spirit-based preservative prior to assembly, and subsequently every year in accordance with the manufacturers instructions. Please ensure that regular general maintenance is carried out on all moving parts, and that the roofing felt is regularly inspected, and replaced if required.


All products are delivered sectional/flat-packed to kerbside unless stated otherwise. *The free installation service covers most of mainland Scotland and England, however delivery to outlying areas may be subject to an additional charge, see map below.

Delivery lead time shown is typical for most areas, however this is approximate and cannot be guaranteed. Assembly will add an average of 1-2 weeks to your lead time, therefore please check before ordering if delivery time is critical. Buildings supplied with a non-standard option or bespoke sizes cannot be returned under any circumstances, therefore please ensure that you order correctly. We're here for advice if you're not sure!


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Customer Reviews
Write an online review and share your thoughts with other shoppers!

Reviewer: A. Laidlaw from Winchester   5 Stars

It was great to be able to speak to someone to help answer my questions before i placed and paid for my final order, unlike your competitors at worldstores which is just web based. Well done!

Reviewer: David Shann from Leeds   5 Stars

Just a quick note to say how impressed I have been with A1 Sheds from start to finish. You have some very helpful and informative staff. The 2 lads that came to erect the sheds (TGB 12x6 Security Pent & TGB 10x6 Security Apex) were also first class.

Thank you.

IMPORTANT: Imperial sizes shown in the description are approximate, and are provided by the manufacturer purely as a guide. Please refer to the metric dimensions for more accurate sizes, or contact us prior to purchase if you have any specific requirements.