How much does grille lock replacement cost in Derry?
Most grille lock replacements in Derry 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 the work covers
- Lock work on most grille makes
- Padlock hasp conversions
- Complete lock box replacement
- Quick-release conversions for escape windows
- Upgrades to higher-security cylinders
- Additional shoot bolts top and bottom
Visits in Derry and nearby
We arrange grille lock replacement visits across Derry and the BT48 postcode district, and in nearby Strabane (13 miles), Limavady (15 miles) and Coleraine.
County Londonderry centres on Derry's walled city and Victorian streets, with Coleraine and Limavady further east.
This work suits:
- Sites wanting one key for every grille
- New occupants with unknown key holders
- Lost or stolen keys
- Bedroom grilles needing a keyless release
Before the visit
Keyed alike
One key for all grilles is convenient for homes and small shops.
Key control
Restricted key systems limit who can have copies cut.
Rules that apply 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
- Tell us about the grille and lock
- Price confirmed
- Lock replaced or upgraded
- New keys handed over
Grille lock replacement and upgrades in Derry: questions
Which areas near Derry do you cover?
Yes. As well as Derry, we can arrange visits in nearby Strabane, Limavady and Coleraine, and elsewhere in County Londonderry.
Can you change a lock on a grille you did not fit?
Yes, on most makes, subject to compatible parts.
I have lost my grille key. What can I do?
We can open and replace the lock so you have new keys and know who holds them.
Is a better cylinder worth it?
On a grille that is otherwise sound, a higher-security cylinder is an inexpensive way to raise resistance to lock attack.
Grille lock replacement and upgrades in nearby towns
Other grilles in Derry
- Vacant property grilles and screens
- Counter and hatch grilles
- Home security grilles
- Patio and bifold door grilles
- Security grille installation
- Hinged security gates
Tell us what you need and we will confirm the price before we attend.