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At Surelock Homes we supply all UPVC gearboxes and UPVC mechanisms, these mechanisms can fail due to them not being maintained properly or because the door has not been fitted correctly. This problem is easily sorted, even though these parts are a little expensive, they are probably not as expensive as you may think.

Many national companies and some independent companies will charge you in the region of £400 to visit, order then replace, do not be fooled by this you should be charged roughly half of that figure in the worst case scenario, there are cheap mechanisms to be found as well as more expensive ones i.e. 4 roller standard around £50, a key operated mechanism (this is where you use the key to lock the door not lift the handle) can be as much as £120 there are over 450 different types on the market so prices do vary.

In the years that we have been trading we have come across a lot of mechanisms that have failed, the costumer has called a glazing company and they have advised to change the door as the mechanism is discontinued. Please do not replace the door, this is not necessary and a very expensive alternative. We can find a replacement at a much lower cost to you, so please call us before you make this decision.

We can also supply only, if you would like to fit them yourself. Please fill in the attached UPVC measuring form and we will then identify which mechanism you have and call you back with a price for supply only as well as a price for supply and fit.

Sometimes the whole mechanism does not need replacing just the centre case. We can also supply any centre cases that can be removed, although in some mechanisms the centre case cannot be removed. This is because it?s pressed on (permanently) at the factory or they may have just been designed not to be removed. Changing the centre case is cheaper then changing the whole mechanism as centre cases range from £20 to the most expensive £90.

If you require expert lock repairs in Portsmouth or find yourself locked out, Surelock Homes locksmiths are experts in this field, so please feel free to call us for any advice that you need. Our phone is always answered by a qualified locksmith.

Call now on 02392 756 943

UPVC mechanism identification form

Surelock Homes are proud members of Checkatrade, please click on the link to see our work and reviews, always use Checkatrade and avoid rogue traders. In addition, we are Trading Standards Approved and are members of the Buy With Confidence Approved Trader Scheme in Hampshire. Check our reputation at:checkatrade.com
Reliability and Timekeeping 99.8%
Tidiness 99%
Courtesy 99%
Workmanship 99%
Excellent service when I found myself in a difficult situation due to a broken lock and unable to enter my home . Only. 20 minutes until Dan arrived ,gained entry and fitted new lock. I was so relieved as it was evening time and I had a young upset child with me.Very impressed with this prompt service.Thanks so much 🤗
Claire Daniels
Claire Daniels
14:19 28 Sep 18
Fantastic service. Very quick response and punctual. Reasonably priced and great job done completely hassle free. Highly recommend.
Joanne Stirrat
Joanne Stirrat
15:28 19 Sep 18
I called Surelock about a broken window lock and handle on my double glazing. Within just over an hour from calling it was fixed. The service was excellent. A very pleasant helpful engineer! Great job and a good price! Thankyou to all involved. I will very willingly recommend Surelock Homes to others.
Michael Wenham
Michael Wenham
09:34 02 Oct 18
Late call to these guys got here in half hr cheapest quote we got felt at ease when talking to them on phone reassured me that they would turn up.
Chris Chandler
Chris Chandler
09:58 07 Oct 18
Time keeping was excellent job was completed easily and to a high standard felt really comfortable when calling as he obvoisly knew exactly what he was talking about and understood our issues perfectly.
Karl Woods
Karl Woods
11:18 25 Sep 18
Needed a locksmith in Portsmouth for rented house door jammed locking in my tenant Paul was super professional on the phone and assured me someone would be out to her within 30 minutes, called me once door was opened to explain to me clear prices and what needed to be done. Just a brilliant service all round cheers..
Mike Francis
Mike Francis
09:05 18 Feb 19
Brilliant company always on time and available around the clock. Always proffesional. We would highly recommend Surelock Homes!
sam goring
sam goring
16:10 25 Mar 19
I called Surelock Homes out to our property this morning as key was not going into the lock as it should they were quick to diagnose the problem and replaced the faulty part price was excellent much less then i thought it may be and the guy was helpful and very cheerful.....
Neil Jarvis
Neil Jarvis
10:17 10 Dec 18
Dan was a super star he really was so friendly and polite made my elderly mum feel very secure will use his services again if ever needed.
Robert Atkins
Robert Atkins
09:44 21 Jan 19
Danny was pleasant and punctual he had the required parts on the vehicle and got to work quickly found the issue in no time and replace defective parts.
Andrea Goodwin
Andrea Goodwin
14:07 28 Jan 19
Friendly and good service after we locked ourselves out. Got us back inside with minimal impact and in good time. And gave helpful advice about security.
Peter Lambert
Peter Lambert
18:03 03 Apr 19
Very quick to answer the call and attend when I was unfortunately locked out of my house. very polite, efficient and had my door open within seconds.. Causing no damage to my lock.. Very impressed and relieved to be back in so easily!! Highly recommend Surelock homes and will be sure to pass this number onto friends who find themselves in need of a Locksmith. Thankyou
Helen Mahoney
Helen Mahoney
21:06 04 Apr 19
Lost keys to hitch lock was expecting a drill out but managed to pick it if we find the key will save us another lock excellent all round
Graig Parker
Graig Parker
13:44 26 Apr 19
Could a service get better then this?? With me in 15 minutes job completed 15 minutes later received my discount was professional and polite and left the place clean and tidy wow!!
Charles Bryne
Charles Bryne
11:18 06 May 19
I had a problem with my back door lock. I called Surelock Homes. They arrived promptly and did a great job. I would recommend this company.
Johnson baird
Johnson baird
11:50 09 May 19
Called same morning. Back door lock changed as other had broken and took a look at front door too. Pite, tidy, efficient service and good advice given. Would definitely use again.
Emma Kelsall
Emma Kelsall
12:29 14 May 19
Called same morning. Back door lock changed as other had broken and took a look at front door too. Polite, tidy, efficient service and good advice given. Would definitely use again.
Emma Kelsall
Emma Kelsall
13:49 14 May 19
Excellent service. Quick and friendly and so much cheaper than other locksmiths! Definitely recommend
Megan Paterson
Megan Paterson
10:22 16 May 19
Very reliable. The guy that came out was really friendly and polite. He changed 2door locks really quickly. I felt very confident using this company which I believe is very important I would highly recommend them.
Sally Deal
Sally Deal
17:10 18 May 19
Very quick and friendly service.Had locked myself out with my baby.The guy from Surelock Holmes was very helpful and put me at ease straight away.was back inside within 30 mins.fast reliable service.would definitely recommend these guys.
layla treagust
layla treagust
16:15 19 May 19

For move information and free advice please feel free to call me on 02392 756943 or email on surelockathome@yahoo.co.uk.