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Collapsible Gates
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Roller Shutters
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Security Doors
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Security Doors

Security DoorsProtect your valuable assets, from property to people

Our strong-fix security doors and frames offer design qualities that provide unbeatable fire and security protection to homeowners and commercial businesses across London and the Home Counties.

These doors have a wide variety of applications for commercial and residential use.


Commercial security doors

The installation of high quality security doors is essential for protecting any business, large or small. Our selection of extremely robust and secure commercial doors, coupled with the skilful practices cultivated by our engineers’ many years of security industry experience, will ensure your business remains protected against break-ins, theft, vandalism and other criminal damage. Their superb fire-limiting specifications also enhance the safety of your staff, visiting clients and various office valuables.

View some examples of our high quality security doors in the Commercial Security Doors gallery, or for further information.


Residential security doors

An increasing number of homeowners are recognising the invaluable benefit of securing their living spaces. Our residential security doors, like their commercial counterparts, are exceptionally strong and reliable, built with various combinations of reinforced steel and timber, optional multi-lock systems and officially accredited fire sealing properties.

At Costello Security Installers we are aware that the appearance of your home, garage or out-house is also an important consideration. We offer a considerable range of styles, designs and colour finishes, including varnished wood finishes, a large number of window panel positioning combinations and many more features.

Click here for our Residential Doors gallery


Important considerations when choosing security doors and steel security doors

When you are considering purchasing steel or reinforced timber security doors, it is extremely helpful to obtain the advice and expertise of time-served professionals.

In order to match any business image you may be wishing to emphasize, our security doors come in a range of styles, designs and colours. In terms of practical security protection, our friendly team will be more than happy to advise you of the best specifications for your working environment. Many residential and commercial security doors are fitted with tempered, break-proof glass, which is extremely effective at keeping out both the elements and unwanted intruders.

All of our residential security doors come with a CE certificate of conformity for burglary prevention, insulation and rigidity.

If you wish to know more about the details of our security door design, please view our Security Timber Panelled made-to-measure steel door sets specification.


Industry certified for premium quality and protection

Our security doors are available with BS and CE approval with certification ENV 1627 wk 2,3,4,5 for Burglary prevention. The draft standard ENV 1627 – a standard for burglar resistant door sets, windows and shutters – was drawn up by the Technical Committee CEN/TC 33 in 1999.

Approved with excellent fire protection properties, the majority of our doors are also blast proof and bullet proof to official CE EN 1522 FB4 Magnum and FB6 AK47 standards.


We also supply and install all of our security units and systems to the standards laid out by the Safe Contractor Approved Scheme (SCAS), while meeting LPS 1175, CE 1627 and CE 1522 standards. 

Costello Security Installers are specialist manufacturers, suppliers and fitters of roller shutters, steel doors, security doors and security grilles at competitive prices.


Based in Banstead, Surrey, our team is well placed to provide its superb quality security installation service to customers in all the London boroughs, as well as across the South East, including Kent, Essex and Surrey.

Our broad domestic and commercial clientele is comprised of businesses and homeowners in many locations such as Reigate, Romford, Hounslow, Harrow, Islington, Dorking, Woking, Sutton, Watford, Camden, Balham, Kingston upon Thames, Fulham, Kensington, Knightsbridge, Twickenham, Battersea, Crawley, Chelsea, Epsom, Richmond, Beckenham, Coulsdon, Croydon, St Johns Wood, Caterham, Edgware, Wimbledon, Purley, Leatherhead, Enfield and the City.

For more details please contact us today. We offer free no obligation surveys, high quality products, expert installation by our own staff, ultra-fast response locksmiths and free help and advice from experts with many years of experience.

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