Security Comes As Standard

All windows and doors supplied and fitted by Derby Double Glazing Ltd, come with multipoint locking mechanisms and high security cylinders as standard. No superior or upgrade options to upsell, just the best from the start.⁠

All windows come with key operated locking handles, with multipoint locking mechanisms and shootbolts  – something many other window installers omit from their windows.⁠

All uPVC and Composite doors come with at least 5 point multipoint locks as with 3* plus Ultion cylinders. You can read more about Ultion Locks here.

All of our high quality, aluminium bi-folding and patio doors are fitted with their own 3* high security locks too, to ensure every entrance is protected. ⁠

Ultion is our brand of choice, offering their own break in guarantees. All Ultion cylinders are anti-bump, anti-snap, and anti-drill. Inside every Ultion 3 PLUS door lock is an additional hidden lock, another layer of protection against intruders. Encased inside a solid molybdenum core and secured with a dedicated retaining pin, the lock is triggered when signs of forced entry are detected – activating LockDown Mode™. Once activated, your home and family are safe.

That’s the Derby Double Glazing way!