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At Black Knight Secondary Glazing, we strive to provide an exemplary service to each of our customers. As an independent contractor, we recognise the importance of delivering high quality products with a customer-focused service to match.

Please find below a selection of our customer's testimonials, with additional references happily made available upon request.

What Our Customer's Are Saying About Us...

April 2015

I've just transferred payment for your invoice online.

Thank you very much indeed for the excellent service we've received. Graeme was a superb point of contact throughout.

As discussed I'd be grateful if you could please provide me with a quote for further secondary glazing for my lounge windows.

Kind regards

AD Penarth - Apr 2015 - 30th April 2015

AD Harrow - Apr 2015AD Harrow - Apr 2015

I have got the secondary window installed in the bedroom for Ramsay House.The company that did it was Black Knight secondary glazing. We decided to go with them after doing a lot of research and going to many window companies.(Some window companies said they cannot do it). I can say Black Knight did a first class job and I can recommend them highly.They are very professional and give you the best service.

They charged me around £1100- 1400 depending on your needs for the secondary window. I am very pleased with the service and they have high expertise in the business.The Director Graeme is familiar with Ramsay House and he went out of his way to help us. He is very knowledgeable and accommodating.

AD Harrow - Apr 2015 - 13th April 2015

March 2015

It's fantastic, David.

Bl**dy brilliant haha!

SC Sheffield - Mar 2015 - 18th March 2015

From the moment of first contact with Black Knight, I felt I was dealing with a professional, knowledgeable, honest and courteous company and so it proved.

I was kept informed throughout and every effort was made to fit in with my ongoing refurbishments.

I am happy to recommend Black Knight without any reservations.

Thank you.

JG London - Mar 2015 - 9th March 2015

February 2015

I am really pleased with secondary double glazed windows that fitted yesterday to our two sash windows. Tim carried out a lovely job and is a very pleasant man. The sound reduction results have amazed me and I can hardly hear any traffic now.

BS Ampthill - Feb 2015 - 10th February 2015

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How to find out more?

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One of our friendly and knowledgeable glazing technicians will arrange a free, no obligation consultation at your home, at your nearest convenience.

Contact our freephone number 0808 168 5208

Phone Black Knight Secondary Glazing Ltd

For further advice or any additional information on our secondary glazing, contact our team of experts who are on hand to answer any questions you may have.

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Contact Black Knight Secondary Glazing Ltd

Simply send us your enquiry using the form to the right and one of our surveyors will respond quickly to action your request.

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Please feel free to provide us with your approximate window sizes and designs and we will provide you with a quick estimate.

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Contact Black Knight Secondary Glazing Ltd Today For A Free No Obligation Quotation, Freephone 0808 168 5208

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