More Info >>

Collapsible Gates
Discreet security for all commercial and residential..

More Info >>

Roller Shutters
Protect your building's weak points with our quality roller..

More Info >>

Security Doors
Strongfix security steel doors and frames offer..

More Info >>

Security Grilles
Your windows are your building's weakest point..


Grilles and Gates Brochure

Security Grilles

Your windows are your building's weakest point – protect yourself with cost-effective security grilles

Security grilles offer a strong alternative to collapsible gates. Not only do they provide a prominent visual deterrent but they prevent forced entry through broken glazing - the most common entry point for intruders. All of our grille products are powder coat white finished, with other colours available on request.


Bar Grilles

Made from heavy duty steel, our comprehensive range of bar grilles offer a high level of permanent security to your commercial or domestic premises. Round bars are cut to size and welded in place, then powder coated to a high quality finish. We also offer decorative modifications, to help your security grilles either blend in seamlessly or stand out, depending on your preferences.


Security Mesh Grilles

We install a wide variety of mesh grilles for both doors and windows, including hinged, removable and permanent models. All our mesh grilles are insurance approved and we also design them with "cut outs" to allow easy access to handles for normal use.


Bar Grille Doors

Suitable for both interior and exterior applications, we install a range of bar doors including bar gate, steel sheeted and adjuster designs. Complete with BS3621 Chubb deadlocks or Adams Rite Hook Locks, all our security doors are hinged and made from steel box section.


We offer high quality products, fitted by experienced, reliable installers at very competitive prices. If you are concerned about your security, please contact us for a quotation!


Click here for our gallery...

Windows and doors without in-built grilles pose the greatest security hazard in a home. Anybody can simply open or break the glass and enter your home. We at Costello Security Installers have the best and most cost effective solution to this: bar and mesh security grilles for both windows and doors.



Removable, permanent and hinged grilles with bar or mesh designs can be made to order for your specific requirements. At Costello Security, even decorative designs are possible. Bar grilles are cut to the size you need and welded in for maximum defence. This offers a permanent solution to your security needs, giving you peace of mind.



Mesh doors can be permanent, hinged or removable and designed to fit the handles and openings in your existing door. Bar grille doors that we offer come with locks and are suitable for use internally or externally.


All our security grilles can be powder coated to the colour of your choice and we have over 100 colours to choose from. Our grilles also have insurance approval and are fitted by skilled and dependable experts’ at the most competitive rates.

We offer free no obligation surveys, industry leading products and expert installation by our own staff.

Our ultra-fast response locksmiths’ service comes with free help and advice from experts with over two decades of security installation experience.


Our main offices are located in Banstead and Central London, leaving us superbly placed to provide high quality security grille installation, advice and assistance to customers in London and throughout the Home Counties,


Costello Security Installers are specialist suppliers and manufacturers of security grilles, roller shutters, steel doors and security doors at highly competitive prices. For more details please get in touch with our friendly team today.

Back to Top