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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...

December 2019

I was really impressed with the finished job.

Your staff arrived on time, completed the job quickly & efficiently, tidying up afterwards so you would not know they had even been there.

All this plus a cheery happy approach to their job. (Something that is so often missing these days)


SC Leeds - Dec 2019 - 17th December 2019

Windows all done. Very happy with the results and the tenants even happier.

Very quiet in the house and they look great.

I will have no hesitation in recommending your firm to anyone. 

IH County Durham - Dec 2019 - 6th December 2019

in the words of my son

.....”its AMAZING!”

FG London - Dec 2019 - 2nd December 2019

November 2019

Many thanks for completing the secondary glazing to my front bedroom.

The difference in sound reduction is better then I expected & the room is now warmer as well.

SC Leeds - Nov 2019 - 25th November 2019

Just wanted to let you know how pleased we are with the double glazed units.

The black ones look so much better against the black beams & the whole room has been vastly improved.

Adam & Joe did a fantastic job, particularly bearing in mind fitting the units inside irregular beams can’t have been easy.

JE Dunmow - Nov 2019 - 24th November 2019

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How to find out more?

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Book an appointment

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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