Castle Lock  are extremely qualified in all aspects of the repair of uPVC Doors and Windows. Whether it’s a problem with the multi-point lock, hinges or handles or misted double glazing we can help you. We can source the majority of  materials used on uPVC doors and windows regardless of installed them. We will always give you a reasonable idea of cost before we carry out any repairs and all our work comes with a twelve month guarantee .

Finding reliable uPVC window companies who are based in South Durham  can be difficult as many companies say they are local, however a lot of the window repair companies advertising on the internet are national operators posing as local companies and have to charge a call out fee to make there business viable.

Rest assured that Castle Lock will always give you value for money, there is never a call out charge for double glazing repairs and we give you a no quibble guarantee.