Bollihope Drive
Tunstall, Sunderland

07780 644 007


GC Double Glazing & Locks are a Family Business based in Sunderland, with over 28 years experience of UPVC & Aluminium Products

Experience includes Fabrication, Installation and Sales as well as Service and Commercial Contracts. We specialise in the following types of work within the North East Area:

Replacement Windows & Doors in UPVC or Aluminium. Aluminium Bi-folding Doors in either white or RAL coloured.

Repairs to existing Windows and Doors in ether UPVC or Aluminium, including Double Glazed Units & Locks.

So whether you require new windows or Doors. Or Repair work done. Why not give us a call for a prompt friendly service.

Repairs to existing Windows & Doors
Replacement of failed (misted) Double Glazed Units.
Door Handles
Door Euro-Cylinders
Multipoint Door Locks
Overhead Door Closers (Aluminium Doors)
Pad Handles(Aluminium Doors)
New Door Panels
Window Locking Mechanisms
New Handles in White, Chrome, Silver, Black & Gold
Gasket renewal
Thousands of Parts Available
Replacement Windows & Doors
UPVC Windows
UPVC Doors
Composite Doors
French Doors & Patios
Aluminium Bi-folding Doors
Aluminium Windows
White Or RAL coloured products

Energy Efficient upgrades
Change out-dated Coloured Toplights or leaded glass.
Euro-Cylinder upgrades to more secure, 1 Star or 3 Star in line with the latest British Standards. BS EN 1303:2005, BS3621:2007, PAS 24:2007 and BSI TS007:2012 *
Security Issues. If you have just moved house or lost keys. We can replace external Door Euro-Cylinders without replacing the whole locking system.

* Note Euro-Cylinder and Security Hardware will now be classified under the TS007 British Kitemark with the use of a star rating system.
3 Star*** Cylinders are awarded a 3 Star rating when they have passed all criteria of the TS007 BS Standard.
1 Star * A one Star rating is given to a Cylinder Lock that has met criteria of BS Kitemark, but has not passed all of the tests. The Lock would require additional 2 Star rated Security Hardware to reach 3 Star rating.

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