***Due to fluctuations in raw material costs and increased demand - PLEASE CALL for accurate prices and a FREE QUOTATION***

Triple Maxi Apex Garage Side Access – 8 x 12 x 2.5m– 3 Roller/1 PA

Product Options
Maximum quantity available reached.

All prices fully inclusive of VAT & Nationwide Delivery
In stock! Ships within 4-6 weeks. Due to high demand and COVID-19, shipping times might differ. Please contact our office directly for clarification.

Our expert Nationwide Construction Service is available for this building. Please contact us for details and pricing.

Our Premium Steel Framed garages are individually designed and manufactured from pre galvanised steel, with fully bolted connections, to provide superior strength, security and durability for your vehicles, motorcycles, tools or general storage. 

Every building is CUSTOM MADE to order in a choice of colours, insulation and timber cladding to suit your needs. We provide FREE DELIVERY nationwide and offer an EXPERT CONSTRUCTION service to ensure your building is built to perfection.

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Frame Length 12m
Frame Width (Span) 8m
Frame Height to Eves 2.5m
Frame Height to Apex 3.21m
Roof Style Dual Pitch (Apex)
Room Pitch 10 degrees


Frame Material Pre-Galvanised cold rolled steel c-section with fully bolted prime frame. Our buildings include internal double brackets, columns, and rafters for superior strength. All components of our buildings are CE marked for quality control.
Roof Cladding

Plastisol single skin roof sheeting 32/1000 box profile or 40mm insulated composite panel, box profile roof sheeting as per priced in the options above.

Roof Lining Factory fitted anti-condensation barrier supplied as standard on single skin roof cladding.

Plastisol Coated Single Skin roof sheeting 32/1000 box profile or Premium Twin-Skin box profile insulated skylight (40mm or 80mm to match roof selection) as per priced in the options above.

Fixings All necessary frame bolt sets, purlin screws, moulded head colour coded cladding screws, moulded head flashing and stitching screws, masonry anchors, ridge foam fillers and brackets included. Nothing is left to chance.
Wall Cladding

Plastisol Coated Single Skin wall sheeting 32/1000 box profile or Plastisol Finish 40mm/60mm Composite Insulated wall sheeting with box profile. As per priced in the options above.

Timber Cladding

British red cedar T&G shadow board – pine feather edge or shiplap.

Flashings Plastisol Coated Steel ridge, barge, eaves, corner, base drip, roller shutter and door flashings all supplied.
Guttering Premium black PVC deep flow guttering with downpipes to ground are included with all fixings.


PA Door(s)

1 x Premium heavy-duty steel security personal access (PA) door with 10-point locking system. Outward opening. Colour: Powder coated to match cladding. Please discuss if additional PA doors are required.

Roller Shutter(s)

3 x Premium Industrial lath electric roller shutter(s) with control unit plus remote key fob entry – 2.5m (W) x 2.1m (H). Plastisol lath coated to match wall cladding. (door will include Insulated lath if Insulated building option is selected). Please discuss if additional Roller Shutters or different dimensions are required.


(**Guideline only subject to soil conditions)

Slab Required

**150mm reinforced concrete - C35 Mix - 1 layer A252 steel mesh - 1 layer DPM. Slab dimensions exact size of building selected (Wall sheets run past the side of the slab to seal). Slab tolerance +/- 5mm for all dimensions and heights.

Footings Required **500mm (L) x 500mm (W) x 500mm (D). Footings are all internal to slab dimensions. A footing is required below all stanchions and mullions. Full Slab and footings plan with specification is provided with every building.


Warranty Relevant manufacturers warranties are supplied with all components.
Delivery Free Mainland UK Delivery
Manufacturing All steelwork is manufactured and fabricated in the UK to meet British Standards BS EN 1090-1 certification and fully CE accredited.
Terrain Category Country
Wind Region 22 m/s



Our exclusive range of Premium Steel Framed Garages are designed specifically for self-build. Care and attention to detail has been incorporated into the design to offer a safe and secure garage ideally suited to do-it-yourself assembly.

With a good practical know-how, couple of mates to help with the lifting and the right tools, you will have your building up in no time and save on construction fees. If you get stuck at any stage, don’t worry. Our expert team are always available via telephone, email or direct to your site via Facetime and Skype and happy to offer you all the help and support you need. We have guided lots of happy customers through their self-build project with great success and personal satisfaction.

Every Premium Steel Garage comes with all the necessary materials and fixings plus comprehensive documentation including exploded construction drawings, 3D connection drawings and a detailed parts list.

Call us on 0800 368 9100 or Email to discuss our self-build service.

NEW Assisted Build

Our NEW and exclusive Assisted Build has been created to assist customers with manpower available that require direct skills on site. A service that offers as much or as little as you need – when you need it. Our service starts with the pre-assembly of the prime frame with all stanchions, mullions and rafters fully built with all relevant base cleats, haunch brackets and apex brackets fully bolted and ready to stand.

We then offer key stage assistance direct to site. Our fully skilled and experienced site supervisors will meet you on site on key stages throughout the build to offer expert help, advice and training to your team. We charge the consultancy service on a day rate and provide recommended key dates depending on the size and complexity of the building.

Our Assisted Build service ensures that you keep your costs to a minimum whilst being reassured having an expert direct on site to assist the build. You supply the labour and heavy lifting; we supply the skills and expertise. It’s that simple. Plus, we still offer the same expert remote support throughout the build via telephone, Facetime, Skype and email to ensure everything runs to plan.

Call us on 0800 368 9100 or Email to discuss our assisted build service.

Nationwide Construction

For customers who want to save the time and effort of a self-build, Steel Build Masters offer a full Nationwide Construction Service covering the frame assembly, cladding, flashing, PA/Fire Doors and Roller Shutters. We provide a high quality, experienced and affordable Nationwide Construction Service and provide you with a fixed price right from the start, meaning no hidden costs.

Our construction teams will vary from two to three skilled workmen depending on the size or style of your Premium Steel Garage, each of our experienced construction teams operates with a fully equipped van and specialist tools and equipment to install your new Premium Steel Garage with ease.

We only sign-off your Premium Steel Garage when you're 100% happy with the finished building. Our Nationwide Construction Service is Fully Insured and Fully Guaranteed, and we will always return free-of-charge to take care of any snags.

Call us on 0800 368 9100 or Email for a written quotation.

Local Groundworks

As groundworks are typically labour intensive, it can often be beneficial to appoint local contractors for this stage of the build and leave us to construct and assemble your Premium Steel Garage. Many customers already have an existing base and only require footings. Every Premium Steel Garage comes with full slab and footings plans with clear instructions and dimensions for you or your contractor to follow.

 For customers local to our stores in Bishop’s Stortford – Hertfordshire (within 25 miles), who would rather have every stage of the build taken care of by Steel Build Masters, we will be happy to offer a price for all your groundworks and arrange a full site survey to discuss your project in person.

Call us on 0800 368 9100 or Email to discuss your requirements

Warranty and support

No Quibble Warranty for complete Peace-of-Mind

Everything is covered -

Our 25-year No Quibble Warranty is included on all of our buildings. Every building is carefully designed and manufactured using only the finest materials.

This enables us to provide our unrivalled 25-year warranty with confidence. For more information please read our Terms and Conditions.


Unrivalled Customer Support

We're here to help -

We have built a reputation on our customer service and ability to provide bespoke solutions for our customers. We always strive to do our utmost to help you. Our staff are experts in the design and build process and can answer any question and provide unrivalled knowledge and expertise.

If you need more information about a building, or advice on planning permission, structural design or aesthetic design or possibly you have come across a few unexpected issues with the site and want to discuss access options. Whatever the issue, simply get in touch and speak direct with our team who will be happy to help and offer expert advice.

Quality Features

Steel Security PA Doors

Designed for situations where building security is of paramount importance, the combination of a 10-point locking system and interlocking anti jemmy studs, ensures a combined defence against forced entry.

The internal door design features 6 locking points that are connected to steel bars which are interlinked mechanically to the master lock mechanism. 

There are a total of 8 keys provided, 6 are sealed and for the customers exclusive use – the other 2 are used by installers. Once the door is installed, the customers sealed keys will immediately change the combination of the lock preventing any further use of the two installer keys. This adds a further level of security.

The doors are insulated with glass wool in accordance with British Standard directives.

Security doors come in standard grey finish or can be powder coated to your desired colour.


Steel Fire Rated Escape Doors

Designed to exceed the harshest conditions when you require the best in quality and design. Steel Build Masters fire rated emergency doors comply with British Standard BS EN 1634-1:2000.

Our fire doors have been tested, passed and certified by the Warrington fire Global Safety Laboratory WF report No. 15280 achieving F240 or 4 hours Fire Prevention.

The doors and frames are manufactured from galvanised steel. There are two vertical steel reinforcements in the interior of the door to increase both strength & security.

All doors are insulated with Glass Wool Fibre in accordance with British Standards directives BS EN 1634-1:2000.

Fire doors come in standard grey finish or can be powder coated to your desired colour.


Roller Shutter Doors

Roller Shutters are used in helping to prevent unauthorised access and vandalism to premises by adding an extra barrier between ”outside” and whatever entrances they may be protecting. We never compromise on quality and finish with our roller shutter doors. We do not supply or fit cheap security shutters as we value our reputation and our customers.

Our premium range of roller shutter doors enables the perfect choice to be made based on the individual requirements. We provide tube motor roller shutter doors with a manual override operation in case of power failure plus single or three phase industrial motor operated doors for larger openings with a manual chain driven override in case of power failure.

Each of our roller shutter doors is custom made to the exact opening specifications of the building including safety mechanisms, security systems, wind locks, thermal insulation, glazing panels, wicket doors and finish. Every Roller shutter is available with options to suit the customers exacting needs.

We also stock and provide every component for your roller shutter to ensure that we can supply, install and maintain your roller shutter for years to come.

Roller shutter doors come in standard galvanised finish or can be powder coated to your desired colour.



Our premium quality uPVC windows are exceptionally energy efficient, keep your building safe and are wonderfully easy to maintain. Our premium UPVC window range includes a wonderful selection of colours and wood grain finishes to compliment your building.

With a choice of handles, window sills and high energy ratings of A, A+ or A++ you can be sure that the highest quality of you building is reflected in the windows design too.


  • Window energy rating (WER)

As standard you will receive an ultra efficient 'A+' rated window. Our casement windows utilise some of the most advanced double glazing on the market and actually now perform much better than a standard A rated window, at A+, one of the most advanced in the country. Our windows easily exceed building regulations so you will have the peace of mind that you are installing the very best double glazing in your building.


  • Home Energy Efficiency

Our energy efficient windows will make a real difference in the winter and reduce your energy bills as a lot of heat is lost through the windows. The special coating on each pane of glass reflects heat back into the building. All of our windows are filled with argon gas which is extremely effective in reducing heat loss as it has a higher density than air.


  • Security

Our windows have the highest security built in. Our locking system is sourced from Yale and with the option of shoot bolt locking ensures a highly secure window. All of our windows are internally beaded which means that the glass can only be removed from the inside. All window handles have key locking. All our windows have a two-stage locking system where the window is completely closed on the first setting but allows airflow through a small gap on the second setting, while still being locked.


  • Window profiles

Our profile extrusion is supplied by Profile 22, one of the leading extruders in the country. We use the new award winning 6 chambered Optima 70mm system with an attractive sculptured finish.


  • Colours
All of our window designs are available in White, Rosewood, Light Oak, Anthracite Grey and Black-brown, and also woodgrain White and Cream. White on the inside with colour on the outside is also available.







    We have made ordering your building is as easy as 1, 2, 3. We offer a Simple and Secure way to place your building order with…

     Stage 1 - A 10% Deposit Payment

    Our standard terms are a 10% non-refundable deposit on placement of order. The initial deposit payment can be made by PayPal, Debit or Credit Card via our website or over the phone. After the payment has been made you will receive a confirmation email and order number that will appear on all correspondence. Once your deposit payment is received, we will process your account and contact you to discuss all the specifications of your chosen building.

     Stage 2 – 50% Confirmation Payment

    We provide a detailed order acknowledgement that clearly describes the building specifications. We will ask you to check, sign and return a copy of the acknowledgement along with a 50% payment to confirm your order. The Stage 2 Payment can be paid by Debit or Credit card or via Bank Transfer.

     Stage 3 – 40% Balance Payment

    We ask for the final balance payment of your new building around 5-7 days before the delivery date. The Stage 3 final 40% Balance Payment can be paid by Debit or Credit card or via Bank Transfer. Buildings will not dispatch until final payment has been cleared.

    • PayPal

      For ease of use, you can make your initial deposit payment via PayPal direct from our website. All further payments must be made by Credit Card or Bank Transfer.

    •  Debit/Credit Card

      We accept MasterCard and Visa debit and credit card payments over the phone and via our website. For such payments we employ an extremely secure SSL server, thanks to which your card data remains 100% safe.

    •  Bank Transfer

      You make a payment via bank transfer. You will find our bank details in the last step when placing an order online or in the order email.

      Call our expert team on 0800 368 9100 or email support@steelbuildmasters.co.uk to discuss your requirements.


      Our standard delivery is FREE to mainland UK. The building may arrive on multiple deliveries depending on the specification and number of different components included. Deliveries will come direct from manufacturing and can include separate – Frame, Cladding, Doors, Roller Shutters and Windows.


      Delivery normally takes 4-6 weeks for all products in stock. For those products which we don't have in stock, or custom order, delivery takes between 8-10 weeks. We will contact you to arrange a convenient delivery time.*

      *Due to steel shortages and the current COVID-19 Pandemic delivery timings cannot be guaranteed at this moment. All delivery dates and timing will be notified at point of order.


      Our normal delivery service is by Rigid or Artic Lorry and will require adequate access and surface to unload safely. Please inform us in advance if delivery location is hard to access - we will organise a special transport solution and advise any additional cost.

      The vehicle transporting your building parts must gain access to the building site from the adjacent highway or road. Such access should be studied and prepared in advance of arrival. All obstructions, overhead and otherwise, must be removed and the access route gravelled or planked if the soil will not sustain the heavy wheel loads.


      A forklift or other type of power loader will be required to unload the truck and move the heavier parts to the proper locations. This is the responsibility of the customer to arrange in advance. If you are unable to arrange a fully insured offloading service to include plant and driver, Steel Build Masters can offer a range of unloading services and haulage options at additional cost. All option can be discussed and quoted in advance.

      When the truck arrives with the building, unload the truck promptly and safely, stack the steel parts evenly on blocks and protect them from the weather. Unloading and placing the steel parts of the building in the most convenient places for assembly will make the process easier and faster

      DO NOT store materials on top of the slab or within the safe working area around the slab. The slab MUST be kept clear for marking out and taking levels. The safe working area around the slab MUST be kept clear to allow plant and crew to move safely without trip hazards.


      No one knows your site, your location or the surrounding area better than you. For your driver it will most probably be the first time they have visited the area. As such, please share any local knowledge that will help the driver in advance of the delivery and during the delivery.

      Your driver is there to help you and deliver your building in a safe and secure manner. Your driver is NEVER responsible for delays or accountable for the load they carry, they are merely there to deliver. Please be courteous at all times and do anything you can do to ensure the process is as smooth as possible.

      Your driver will not allow the hand-balling of materials unless prior arrangement has been made. This is for both your safety, the safety of the materials and the safety of the vehicle. If unloading facilities have not been arranged and your driver refuses access to the vehicle, please respect the wishes of the driver and contact Steel Build Masters to resolve any issues.


      Check your building immediately after receiving delivery – Without Exception.

      Immediately after receiving your steel delivery, unpack and make sure that all parts have arrived as specified on the building Bill Of Materials (BOM), which is always provided in advance. Note that the building Bill Of Materials (BOM) lists materials from all suppliers and deliveries may be split (eg Frame/Cladding/Doors/Windows/Roller Shutters).

      Please check delivery against the appropriate supplier section of the building Bill Of Materials (BOM). If order is not as it should be, please contact Steel Build Masters immediately.

      If there is a mistake on the order, we will correct order only if notified within 7 days of delivery. If you fail to check your building and notify Steel Build Masters within these 7 days, any extra costs incurred will be the responsibility of the customer.


      After checking your building, you may need to store your materials for a length of time before beginning construction. When your building arrives, it is important to do the following:

      • Store the steel so there is adequate airflow over it while it is waiting to be used in the construction.
      • Any water that finds its way onto the steel should be removed and the steel dried as soon as possible.
      • All moving and electrical parts MUST be stored in a dry environment away from any dirt or dust.

      Failing to do this can result in the first stages of corrosion commonly referred to as storage stain on steelwork. If water is allowed to remain for extended periods in bundles of primed parts such as girts, purlins, etc, the pigment will fade and the paint will gradually soften reducing its bond to the steel. Therefore, upon receipt of a job, all bundles of primed parts should be stored at an angle to allow any trapped water to drain away and permit air circulation for drying. Puddles of water should not be allowed to collect and remain on columns or rafters for the same reason.

      Please consult all manufacturer’s storage instructions. If you are concerned about your storage situation you should contact Steel Build Masters and discuss options for additional protection such as tarpaulins and coverings to aid storage.


      Steel Build Masters are here to help. We always go the extra mile to ensure everything runs as smooth as it possibly could. Please always make us your first point of contact for any issue or simply for expert help and advise (we do this day in day out and have a wealth of experience).

      The more information you can provide us in advance, the easier it will be to arrange a solution. Call our expert team FREE on 0800 368 9100 or email support@steelbuildmasters.co.uk to discuss your requirements. We are always happy to help.

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