What is the price of grille lock replacement in County Londonderry?
Most grille lock replacements in County Londonderry cost £150 to £354 including VAT (£125 to £295 plus VAT) per lock fitted. Upgrades such as quick-release or restricted-key cylinders are priced before work goes ahead.
Grille lock replacement means fitting a new cylinder, lock body or complete lock box to an existing security grille. It is the quick fix for lost keys, worn or seized locks and moving into a property with unknown keys, and a chance to upgrade to a stronger or quick-release lock.
What is included
- Quick-release conversions for escape windows
- Upgrades to higher-security cylinders
- Replacement cylinders and lock bodies
- Lock work on most grille makes
- Additional shoot bolts top and bottom
- Padlock hasp conversions
Covering County Londonderry
We can arrange grille lock replacement anywhere in County Londonderry, including Coleraine and Derry. Visit dates depend on engineer availability. Choose your town below for local details.
County Londonderry centres on Derry's walled city and Victorian streets, with Coleraine and Limavady further east.
Typical reasons to book:
- Lost or stolen keys
- Bedroom grilles needing a keyless release
- Sites wanting one key for every grille
- New occupants with unknown key holders
Towns in County Londonderry
Things to think about
Key control
Restricted key systems limit who can have copies cut.
Keyed alike
One key for all grilles is convenient for homes and small shops.
Planning and safety in Northern Ireland
Grilles in rented homes
Private landlords in Northern Ireland have fitness and safety duties under the Private Tenancies (Northern Ireland) Order 2006, as amended by the Private Tenancies Act (Northern Ireland) 2022. Grilles over windows a tenant may need for escape should open from inside without a key.
Grilles across exits in business premises
The Fire and Rescue Services (Northern Ireland) Order 2006 and the Fire Safety Regulations (Northern Ireland) 2010 make the appropriate person keep escape routes and exits available and easy to open while people are present. A grille across an exit should be open whenever the premises are occupied.
How it works
- Send a photo of the lock
- Choose like-for-like or upgrade
- Fitting and testing
- Keys and handover
Grille lock replacement and upgrades in County Londonderry: questions
Which towns in County Londonderry do you cover?
We can arrange work anywhere in County Londonderry, including Coleraine, Derry, Limavady and Magherafelt.
Can all my grilles use the same key?
Yes, by keying the new cylinders alike.
Can you change a lock on a grille you did not fit?
Yes, on most makes, subject to compatible parts.
Can a key-only grille be converted to quick release?
Often, yes, by fitting a lock with a keyless internal release. We check the grille first.
Other grilles in County Londonderry
- Removable security grilles
- Security grille repairs
- Patio and bifold door grilles
- Security grille servicing
- Escape window grilles (quick release)
- Fixed window grilles and bars
Use the form or call 0800 088 6248 to book.