your local double glazing repair expert

double glazing repair expert

Castle Lock 

your local double glazing repair expert

  • Window Repairs
  • Door Repairs
  • Misted Double Glazing
  • Door & Window Seals
  • Letterbox's
  • Door Handle Sets
  • Window & Door Hinges

Castle Lock and Hinge

your local double glazing repair expert

Welcome to Castle Lock - Double Glazing Repairs

Castle Lock uPVC Door – Window Repairs provide a rapid repair service for uPVC and composite doors together with security upgrades and repairs to uPVC windows. We can match most locks and and hinges regardless of of age and offer a fast cylinder replacement service at a reasonable cost. 


We start with a FREE, no obligation survey within our normal working area, we will make you aware of any issues or give you peace of mind that all is well. We’re passionate about getting the job done right, so call us today for a free no obligation quote. ” We’re so confident you will like our prices we won’t charge you a call out fee”.

upvc window seals
window repair expert

over 35 years experience

With over 35 years in the double glazing industry I am well placed to repair your windows and doors. With over 30 years experience in uPVC window fabrication we can ensure a rapid repair service. If the hinges have failed or the locking mechanism has broken – the window can be repaired.

A Complete Service

As experts in uPVC window repair we are confident that we can match the hardware specification regardless of who installed it or how old the parts are.  We stock parts for all of the major window manufacturers and have also researched local installers, whether still trading or have ceased to trade. 

Call Us




 01833 689150

01325 506160

07500925219


Barnard Castle - Darlington - Newton Aycliffe - Bishop Auckland - Richmond - Teesdale    

check below for full list

Misted Double Glazing 

If you have a misted sealed unit this means that the unit has broken down, however you only have to replace the glass unit, NOT the whole window. We have replaced hundreds of misted double glazing panels providing satisfaction without mess and at a fraction of the cost of fitting a new window..

uPVC Door Window Repairs Darlington 1

What Our Customers Have To Say

A large percentage of our work is generated from referrals by satisfied customers and repeat business. We we always endeavour to give value for money and treat customers with courtesy, reliability and responsiveness. Our customer feedback speaks volumes these are just two of many taken from Checked and vetted and Google My Business Reviews. If you wish to view more of our reviews simply click the google image below.

castle lock and hinge google reviews

Extremely quick, well priced service.

Extremely quick, well priced service. We rang up and the work was done the following day. Dennis was very professional and the work was completed cleanly and efficiently. We will definitely use Castle Lock again.

Gainford

Replacing front door panel due to broken glass

Really pleased with job, very friendly and helpful workman. He had the job done in no time and earlier than expected. At a very reasonable price as well. Highly recommend!

checked and vetted

Click For More Reviews

Bishop Auckland

Alvin Sephton
Alvin Sephton
20:17 24 Jun 21
Dennis was absolutely wonderful. He could not fix the door completely on the first visit, but was able to open it and made it safe for us and lockable.He came back the next day with the parts to repair the door fully, and even did some preventative maintenance on the patio doors and other doors in the house for us free of charge.We found him to be an excellent, honest and trustworthy tradesman who cares about doing a good job at a fair price.We would certainly recommend him.
BEVERLEY PETCHER
BEVERLEY PETCHER
11:11 18 Jun 21
I could not credit this man enough!! Reliable, punctual and kept me informed... I would recommend him to others which i already have done.. Amazing guy throughout.. Not costly too and very polite which to me goes along way.. Well done and a big thank you...
Chris Metcalfe
Chris Metcalfe
19:09 16 Jun 21
Great service. ThanksReplacement rollers fitted to very old patio doorsFriendly and good value for money
Steven Moss
Steven Moss
14:08 13 Jun 21
Went out of his way to find us some door handles to match existing fittings,always punctual and does a good job,would highly recommend
Patricia Doherty
Patricia Doherty
10:01 12 Mar 21
David Wilkinson
David Wilkinson
13:57 18 Feb 21
Amazing service. Nice and friendly.. would definitely recommend
David Boynes
David Boynes
11:36 12 Feb 21
Called Dennis as having issues with windows locking. Nothing too much trouble and fixed the next day. Highly recommend if you have any issues with your windows
Andrew Teggert
Andrew Teggert
21:11 08 Feb 21
Extremely good, fast, friendly and efficient service. Problem with window mechanism was identified and fixed within 15 minutes! Wouldn't hesitate to use again and would definitely recommend to others.
Kaighley Jenkinson
Kaighley Jenkinson
16:01 06 Feb 21
Brilliant company, great service
Shaun Birtle
Shaun Birtle
18:53 05 Feb 21
A friendly and efficient service. We have used Dennis several times now and would highly recommend him.
Michelle Backhouse
Michelle Backhouse
12:00 20 Jun 20
I can't recommend Dennis enough to anyone. He was an absolute star. Arrived on time, was polite, caring and efficient. The price was more than reasonable. Excellent service. Thank you so much
David Reid
David Reid
08:18 01 Feb 19
First rate service from start to finish. High quality workmanship at a good price. Recommended.
Christine Brown
Christine Brown
11:43 24 Oct 18
I was delighted with the service from quote to three repairs today.Communication was excellent throughout.Dennis was a great find .Another job already booked in .
Judith Colborne
Judith Colborne
15:10 08 Oct 18
Quick response. Professional service and advice given. Would certainly use again if required and recommend to friends and family.
Paul Tyldsley
Paul Tyldsley
05:35 15 May 18
Jill Allwood
Jill Allwood
08:41 26 Apr 18
Excellent,speedy service.Would recommend.
Lee Vasey
Lee Vasey
16:25 13 Apr 18
Excellent work on UPVC window repair and door lock. A very courteous and professional service. Many thanks
John Brownlie
John Brownlie
18:59 22 Mar 18
A prompt, friendly and efficient service. Would happily recommend to family and friends. Thank you.
Lynne Walden
Lynne Walden
13:58 15 Mar 18
Excellent job done promptly and with a smile!
John Craig
John Craig
09:59 09 Feb 18
I recently used Castle Lock and Hinge to replace a number of window units, fit locks onto windows and adjust a number of doors. Dennis was very helpful and courteous throughout, and I'm very happy with the standard of the work done and the manner in which it was carried out . I'm very happy to recommend him to others.
marie hodkinson
marie hodkinson
09:26 19 Jan 18
Extremely quick, well priced service. We rang up and the work was done the following day. Dennis was very professional and the work was completed cleanly and efficiently. We will definately use Castle Lock again.
Emma Lambert
Emma Lambert
16:37 06 Jan 18
Excellent service received. Quick response, professional, would definitely recommend.
vivienne bussey
vivienne bussey
20:02 20 Nov 17
excellent service from Castle Lock & Hinge prompt & professionalVivienne Bussey
Andrea Busby
Andrea Busby
19:17 14 Nov 17
Really pleased with this professional, friendly and helpful company. Dennis kept in touch with us throughout and we will definitely use him in the future and recommend him to our friends. Thank you.
Lloyd Wood
Lloyd Wood
10:36 10 Nov 17
Great guy and did a fantastic job on my mother's windows all sorted out now... Thank you again
Heddaa Timms
Heddaa Timms
21:32 06 Nov 17
Very good service. Very friendly and punctual can't fault the service at all. Would highly recommend.
Airport Spotting Aviation Videos
Airport Spotting Aviation Videos
17:57 06 Nov 17
Great service and good communication. Very happy with the work. Would recommend.
Derek Baillie
Derek Baillie
21:51 11 Oct 17
paul kipling
paul kipling
14:54 10 Oct 17
Adele Pearson
Adele Pearson
11:42 04 Oct 17
Great service! Would highly recommend!thank you
Steve Simpson
Steve Simpson
19:24 03 Oct 17
Extremely competent and efficient service. Responded at very short notice and provided temporary repair until full repair could be carried out which was done to time. Would strongly recommend Dennis and his expertise.
Leanne Cornelius
Leanne Cornelius
10:52 29 Sep 17
Excellent service provided, very polite and efficient. Would definitely recommend.
Linda Poulter
Linda Poulter
15:46 28 Sep 17
Fantastic service. Would highly recommend. Windows ordered and fitted within two weeks.
Debbie Hepper
Debbie Hepper
20:16 25 Sep 17
I am posting this review on behalf of my Mam, who received great service from Stan today, she couldn't fault him and was very happy with the work he carried out for her. Totally recommend 😃👍🏻
Liz Nicholson
Liz Nicholson
06:12 20 Sep 17
GERRY SLATER
GERRY SLATER
11:49 25 Aug 17
Very prompt response to my request, dealt with to suit timescale, which wasn't easy, and fitted in super quick time time, really quality service which is hard to find nowadays! And under my estimated budget. Many thanks Dennis, I'll be in touch reading the replacement artwork/leading etc.
edwina minto
edwina minto
08:07 25 Aug 17
Dennis has done a great job for us replacing glass and seals we would highly recommend him to anyone.
Peter Throw
Peter Throw
19:35 23 Aug 17
Fantastic service. Parts were located to fix three windows despite them being difficult to source due to non standard size. Work was carried out efficiently and competently. Would definitely recommend.
Wendy Patch
Wendy Patch
21:03 04 Aug 17
Denis is extremely reliable and knowledgeable in his trade.He does a great job and is very competitive in his pricing. I would highly recommend him for any job, large or small.
Raymond Hoare
Raymond Hoare
11:08 27 Jul 17
my wife and I were completely satisfied with dennis`s work and friendly banter thank you
Paul Craggs
Paul Craggs
12:25 26 Jul 17
A big thank you to Dennis of Castle UPVC repairs for saving my old double glazed window by installing new window lock gears and locking points so a new window was not needed. Very professional service and able to adapt old parts not available as spares to new parts that are available to correct the problem.
tom brown
tom brown
07:59 22 Jul 17
My wife and I are over the moon with Den's work from Castle Lock and Hinge. We we're told by another company that we would need all of our windows replacing which was going to cost a lot, we then went to Den and he identified and replaced our misted panes and resealed them and now they are like new at a fraction of the cost! Brilliant!!!
susan deal
susan deal
17:36 14 Apr 16
uPVC Door Window Repairs Darlington 2
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Excellent work on UPVC window repair and door lock. A very courteous and professional service. Many thanks
Lee Vasey
Lee Vasey
16:25 13 Apr 18
Extremely quick, well priced service. We rang up and the work was done the following day. Dennis was very professional and the work was completed cleanly and efficiently. We will definately use Castle Lock again.
marie hodkinson
marie hodkinson
09:26 19 Jan 18
A prompt, friendly and efficient service. Would happily recommend to family and friends. Thank you.
John Brownlie
John Brownlie
18:59 22 Mar 18
Really pleased with this professional, friendly and helpful company. Dennis kept in touch with us throughout and we will definitely use him in the future and recommend him to our friends. Thank you.
Andrea Busby
Andrea Busby
19:17 14 Nov 17
I recently used Castle Lock and Hinge to replace a number of window units, fit locks onto windows and adjust a number of doors. Dennis was very helpful and courteous throughout, and I'm very happy with the standard of the work done and the manner in which it was carried out . I'm very happy to recommend him to others.
John Craig
John Craig
09:59 09 Feb 18
Extremely competent and efficient service. Responded at very short notice and provided temporary repair until full repair could be carried out which was done to time. Would strongly recommend Dennis and his expertise.
Steve Simpson
Steve Simpson
19:24 03 Oct 17
Fantastic service. Parts were located to fix three windows despite them being difficult to source due to non standard size. Work was carried out efficiently and competently. Would definitely recommend.
Peter Throw
Peter Throw
19:35 23 Aug 17
Quick response. Professional service and advice given. Would certainly use again if required and recommend to friends and family.
Judith Colborne
Judith Colborne
15:10 08 Oct 18
I am posting this review on behalf of my Mam, who received great service from Stan today, she couldn't fault him and was very happy with the work he carried out for her. Totally recommend 😃👍🏻
Debbie Hepper
Debbie Hepper
20:16 25 Sep 17
I was delighted with the service from quote to three repairs today.Communication was excellent throughout.Dennis was a great find .Another job already booked in .
Christine Brown
Christine Brown
11:43 24 Oct 18
First rate service from start to finish. High quality workmanship at a good price. Recommended.
David Reid
David Reid
08:18 01 Feb 19
uPVC Door Window Repairs Darlington 3

 Landlords Repair Service

We provide a service to local estate agents, home rental companies and private landlords, in order for them to refurbish or repair uPVC doors and windows. Dependent on your needs we stock a wide range of euro cylinders both basic and high security kite marked, which will fit all uPVC, aluminium doors and patio doors.

We also stock a range of handles, letter boxes and multi point locks and can replace misted sealed units and uPVC door panels. We are perfectly happy dealing direct with the tenant, whilst liaising with the landlord or property agent.

Barnard Castle - Darlington - Newton Aycliffe - Bishop Auckland - Richmond - Teesdale  -  

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