We regret that the manufacture is currently experiencing delays with these doors
They are no longer available on a 7-10 day service. Please call us to discuss up-to-date delivery times.
Engineered for unmatched simplicity, this standard size range offers the easiest on site installation available. The Streatham is delivered as a complete, fully factory assembled doorset, meaning there is absolutely no site preparation required.
- Fully Preassembled: The insulated door leaves, aluminium sub frame, hinges, locking, handles, and door stays all arrive factory pre fitted.
- Superior Insulation: 40mm thick double skinned steel panels block out the cold.
- Fast Fitting: Built in adjustable wind out lugs completely eliminate the need for timber packers.
- Standard Fit: Available in 20 convenient standard over frame sizes for a perfect straight swap.
- Factory Pre-assembled for Easy Installation
- 40mm Double Skinned Insulated Steel Door Leaves
- No Warping, Cracking or Peeling
- Great value 40mm Insulated Side Hinged Door
GDO 40mm Streatham Insulated Side Hinged Garage Door
Contemporary Wide Horizontal Rib Design
Upgrade your property with the GDO 40mm Streatham, a premium double skinned steel insulated side hinged doorset. This model boasts a stylish wide horizontal rib design finished in a smooth, high quality powder coating. It is supplied fully finished in a choice of three highly popular colours: White (RAL 9016), Black (RAL 9005), and Anthracite Grey (RAL 7016). The interior of the panels is finished in a practical, easy to clean grey white stucco texture (RAL 9002), whilst the internal frame and joints match your chosen exterior colour perfectly.
Superior Rigidity & Thermal Efficiency
The Streatham is built to perform. Constructed from 40mm thick interlocking panels that utilise a rigid foam core and corrosion protected galvanised steel surfaces, it delivers outstanding thermal insulation. Housed within a strong aluminium hollow section frame, the complete system offers exceptional rigidity and resistance to rust. The premium build quality is instantly noticeable; the doors always close with a satisfying and reassuring 'clunk'.
A Fully Factory Assembled Doorset
Designed to fit standard single UK garages, the dimensions provided represent the complete over frame size. Replacing an old door is remarkably simple because the Streatham is delivered fully preassembled and ready to install immediately. The insulated door leaves arrive pre hung in the aluminium sub frame, complete with factory fitted hinges, friction stays, and all necessary locking hardware. You will not need to spend time hanging the door leaves yourself.
Installation is further simplified by the innovative wind out lug system built directly into the frame. With 8 adjustable lugs on each side, you can effortlessly secure and align the complete doorset even if the garage opening is out of square or up to 20mm wider on either side.
Effortless Pedestrian Access & Security
Side hinged doors offer unbeatable practicality. The leading active leaf (positioned on the right hand side when viewed from outside) is fitted with a stunning stainless steel handle and rose. It is secured by a robust latch and deadlock system featuring a euro cylinder lock (2 security keys included) and a highly convenient internal thumb turn for quick exits. The inactive leaf is anchored by easy latch concealed shoot bolts. (Please note: The low profile aluminium strip threshold is delivered safely taped to the top of the frame, ready for quick attachment to the floor during installation).
Understanding Standard Sizes & Options
The GDO 40mm Reigate and Streatham insulated side hinged doors are designed to be the ultimate 'straight swap' for standard UK garage openings. Because these doors are engineered for maximum simplicity, there are absolutely no complex hardware options to choose from.
Every single doorset is delivered fully factory preassembled. The price you see includes the insulated door leaves, the heavy duty aluminium outer sub frame, all hinges, the stainless steel handles, the secure euro cylinder locking system (with 2 keys), friction door stays, and the low profile aluminium threshold. The only choices you need to make are the size and your preferred powder coated colour. Choose from three stunning standard finishes:
- White (RAL 9016)
- Black (RAL 9005)
- Anthracite Grey (RAL 7016)
How to Choose the Right Size
The sizes listed in our ordering drop down menu represent the Overall Over Frame Size (the absolute outer edges of the entire aluminium frame). Because these doors feature an innovative built in wind out lug system, they are designed to be fitted directly into your clear brickwork opening without the need for timber packers.
To ensure a perfect fit, the over frame ordering size should be slightly smaller than your actual brickwork opening. The doors allow for an ideal fitting tolerance of 20mm on the overall width (10mm per side) and 10mm on the overall height.
Please use the table below to find the correct ordering size based on your structural brickwork opening:
| Your Ideal Clear Brickwork Opening (Width x Height) |
The Ordering Size You Select (Overall Over Frame Size) |
|---|---|
| 2020mm x 2010mm | 2000mm x 2000mm |
| 2020mm x 2051mm | 2000mm x 2041mm |
| 2020mm x 2160mm | 2000mm x 2150mm |
| 2020mm x 2204mm | 2000mm x 2194mm |
| 2160mm x 2010mm | 2140mm x 2000mm |
| 2160mm x 2051mm | 2140mm x 2041mm |
| 2160mm x 2160mm | 2140mm x 2150mm |
| 2160mm x 2204mm | 2140mm x 2194mm |
| 2274mm x 2051mm | 2254mm x 2041mm |
| 2274mm x 2160mm | 2254mm x 2150mm |
| 2274mm x 2204mm | 2254mm x 2194mm |
| 2274mm x 2250mm | 2254mm x 2240mm |
| 2370mm x 2051mm | 2350mm x 2041mm |
| 2370mm x 2160mm | 2350mm x 2150mm |
| 2370mm x 2204mm | 2350mm x 2194mm |
| 2370mm x 2250mm | 2350mm x 2240mm |
| 2426mm x 2051mm | 2406mm x 2041mm |
| 2426mm x 2160mm | 2406mm x 2150mm |
| 2426mm x 2204mm | 2406mm x 2194mm |
| 2426mm x 2250mm | 2406mm x 2240mm |
*If your brickwork opening is slightly out of square or slightly wider than the ideal dimensions listed above, the built in 8 point wind out lug system on the frame allows for easy, secure adjustment up to an extra 20mm on either side.
Exceptional Thermal Insulation (U value of 2.20 W/m²K)
Keep your garage warm, dry, and energy efficient. The 40mm thick door panels have an insulating value independently tested to 0.56 W/m²K. However, because a door is more than just a panel, the complete GDO doorset (including panel joints and weather strips) boasts an outstanding overall insulation U value of 2.20 W/m²K. You will not find better thermal performance on any comparable garage door.
Contemporary Finishes & Matching Internals
These doors are supplied fully finished in a stylish smooth paint colour, with a choice of three options: White (RAL 9016), Black (RAL 9005), or Anthracite Grey (RAL 7016). Internally, the door features a practical, easy to clean grey white stucco texture (RAL 9002) to the back of each panel section, whilst the internal frame and panel section joints beautifully match the chosen colour of the front face.
Fully Compliant & Certified (BS EN 13241-1) - Safety and quality are guaranteed. Every door is independently tested and verified to meet all current stringent UK and European safety legislation, proudly carrying both CE and UKCA marks.
Premium Fully Adjustable Hinges - Built for longevity and smooth operation. Each door leaf is fitted with three heavy duty surface mounted aluminium hinges. These are designed for easy and precise adjustment, ensuring your door hangs perfectly square.
Convenient Friction Door Stays & Active Leaf Setup - Each leaf comes equipped with an easy action friction stay designed to hold the door firmly in the open position. (Please note: These stays are not designed to withstand high winds). For everyday use, the right hand leaf is always the leading and active leaf as viewed from the outside.
Low Profile Aluminium Strip Threshold & Blade Seal - Designed for easy access and weather protection. The aluminium profile creates a smart low profile threshold, whilst the bottom of each door leaf features a built in blade seal to keep draughts at bay. (Please note: The threshold is delivered taped to the top of the head frame, ready for you to attach to the floor on site).
Robust 40mm Insulated Steel Panels - Engineered for incredible strength. The doors are constructed using 40mm thick interlocking double skinned panels with a foam core infill. Combined with the aluminium hollow section frame, this provides excellent structural rigidity and resistance to rust.
Superior Draught Protection & Mitred Corners - Keep the elements out. In addition to the continuous circumferential weather strip around the door leaf, the outer frame features an integrated three sided weather seal for excellent draught reduction. The frame profiles are precision mitred at the corners for a neat premium finish.
Concealed Flush Bolt Security - The inactive door leaf is firmly anchored at the top and bottom via heavy duty easy latch concealed shoot bolts. Each bolt features an adjustable flush bolt plate, allowing you to fine tune the closing tension as seals naturally compress over time.
Stainless Steel Hardware & Advanced Locking - Beautiful design meets dependable security. The active leaf features a stunning stainless steel handle and rose. The main lock utilises a robust latch and deadlock combination, whilst a convenient internal thumb turn allows for quick and easy unlocking and exit. The inactive leaf is reinforced with a stainless steel strike plate and an adjustable latch plate for precise latching.
High Security Euro Profile Cylinder Lock - Built to thwart intruders. The euro cylinder lock barrel provides enhanced security and is highly resistant to picking and drilling. Crucially, the cylinder features a break off system; if an attempt is made to force the lock, a sacrificial front section will snap away, leaving sufficient cylinder intact for you to still operate the door safely with your key.
Every GDO door is supplied with 2 security keys as standard.
Built In Adjustable Wind Out Lugs - For the ultimate simple installation, the factory fitted aluminium frame features a unique built in wind out lug system (8 lugs on each side). This allows you to easily adjust and hold the door frame securely in place without the need for timber packers, perfectly accommodating the standard overall door and frame dimensions (without tolerance).
Effortless 'Straight Swap' Installation
Replacing your old garage door has never been faster or simpler. The GDO 40mm insulated side hinged range has been specifically engineered with the ultimate ease of installation in mind, designed to be a straightforward drop in replacement for standard UK garage openings.
You will not need to waste time building, squaring up, or painting a timber sub frame. Your new door is delivered to site as a complete, fully factory assembled doorset. The heavy duty 40mm insulated steel leaves arrive already pre hung perfectly within the robust aluminium outer frame. All the complex hardware, including the hinges, the multi point locking system, stainless steel handles, and friction stays, are fully factory fitted and tested before delivery.
Installation is incredibly intuitive. You simply offer the complete, preassembled unit directly into your cleared brickwork opening. Because the aluminium frame features an innovative built in wind out lug system (with 8 adjustable lugs on each side), you can easily achieve a perfectly level and plumb fit. You simply wind the lugs out to meet your brickwork and fix the frame securely into place, completely eliminating the need for fiddly timber packers. It is truly the easiest on site installation of any side hinged garage door.
2-year manufacturer’s guarantee
· On hinges, locks, handles and stays
(opening/closing max. 5 times a day)
10-year manufacturer’s guarantee
· On the panel against rust inside and outside
· On the steel splitting away from the foam
· On material and manufacturing faults of all immoveable frame parts, if it can be proved that they are inoperative or their use is impaired
· On floor seals, central seals, side seals and header seal against perishing
The GDO 40mm insulated side hinged range is manufactured to the highest engineering standards, ensuring reliable, long lasting performance. Provided the door has been correctly installed, maintained by a competent professional, and cleaned in accordance with the manufacturer's instructions, you will benefit from a comprehensive multi point guarantee.
10 Year Manufacturer's Guarantee
- Panel Integrity: Guaranteed against rust penetration from the inside to the outside of the steel door panels.
- Insulation Stability: Guaranteed against the door panel steel separating from the rigid insulating foam core.
- Frame Durability: Covers material and manufacturing flaws on all non moving parts of the aluminium frame that render it unusable or substantially compromise its function.
- Seal Protection: The blade floor seal, intermediate panel seals, and frame weather seals are guaranteed against rotting.
2 Year Manufacturer's Guarantee
- Hardware & Moving Parts: Covers the aluminium hinges, euro cylinder locks, stainless steel handles, and friction stays. (Please note: This applies to normal domestic use, classified as a maximum of 5 opening and closing cycles per day).
Important Warranty Conditions
To ensure your warranty remains valid, it is essential that the exterior of the door is washed regularly with warm soapy water to remove dust, dirt, and atmospheric pollutants. The warranty does not cover mechanical damage caused by improper transport, poor installation, or incorrect operation. Furthermore, standard warranties do not apply to doors subjected to extreme environmental conditions, such as corrosive atmospheres found in coastal climates with high salt content.
