Cosyseal
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At Cosyseal we believe everybody's work should bring benefit to local communities and wider society. That's why we focus on Social Value throughout our company. We've set ambitious goals and we've committed to being measured and assessed externally by Sonnet Impact, the Carbon Trust and B Corp.

For more than three decades, Cosyseal has provided unrivalled double glazing installation & repairs to Housing Association clients across London and the Home Counties.We specialise in reactive and planned window and door projects for social housing clients throughout the region. Surveyors and residents appreciate the benefits of our services too.
Services
Cosyseal provide a complete window maintenance package. Regardless of whether you need regular cleaning and surface restoration works or just need the occasional handle replacing - we can take care of it. Crucially, we can provide these services to both low rise and high rise buildings including blocks of flats.
Cosyseal are soon to reach a numeric milestone. We have completed work on almost 50,000 individual properties since our bespoke handheld software was launched in 2015. As Cosyseal crosses numerical landmarks, we enjoy celebrating with the surveyors and customer services teams at our Housing Association clients.
Customer Service Officer, Mason Wilks is not yet 20 but is active in his church and on the football field. Mason regularly gives sermons at church, as pictured in the photo to the right. Mason also leads a youth group at his church, organising meetings once a month. Mason is an indispensable member of his church and has been committed to creating a spiritual, safer and nurturing environment for the younger members of the church.
The annual Golf Day 2019 organised by Cosyseal Director Rajesh Patel and friends was successful in raising over 29,000 for Just Imagine, a charity providing nutrition, education and assistance to HIV positive children. The Golf day has been running for the past 4 years and has grown to be an important and anticipated date in the calendar.
If you are a Thornton Heath native or just passing by the area, you are sure to see the planters that Cosyseal father-and-son duo Clive and Khan Broughton have made for the community. Clive and Khan have been home-making planters from their workshop and have sprinkled them across Thornton Heath in an effort to make our town more colourful.
Reviews (5)
Janice R.
Janice R.
Oct 17, 2021
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Exceptional service by the team. Despite prevailing conditions, Cosyseal has managed to provide prompt and effective repairs. Highly recommend their service
Kay Best
Kay Best
Sep 07, 2021
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Had windows and doors changed yesterday. Had a brilliant service right from the beginning. We were phoned every couple of weeks once ordered to give us an update. 2 men arrived yesterday. Everything was covered with dust sheets and even though there was obviously things to clean afterwards care and attention was made as best as it could of been whilst fitting. The weather was awful and they got soaked at one point but carried on regardless without hesitation or any breaks. Nothing was to much trouble for them. They stayed later than expected to make sure works were complete in one day. Were extremely
Fatima Bibi Hanif Pandor
Fatima Bibi Hanif Pandor
Jul 02, 2021
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One word to describe this company. TERRIBLE. My window has been cracked in my apartment for over 3 months. They have continuously cancelled my appointments for repairing my window, their customer service has been atrocious and I have had the worst experience I could have imagined. All this while being unable to live in my apartment because it’s on the 4th floor and I have a 3 year old child who could fall out of the window at any moment because the window is damaged. Avoid at all costs
Mason Wilks
Mason Wilks
Mar 15, 2021
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Amazing service, the engineer came 30 minutes early and called to see if he was ok to attend. Carried out the repairs with minimal noise or mess and was very professional. Have recommended to a handful of people and they have all been pleased also. Fantastic company!!
Miss J.
Miss J.
Oct 17, 2020
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We used Cosyseal for new exterior doors for our property. I had never worked with them previously & I spoke with Dipak who was experienced and collaborative. My doors look great. The Management, Measurement & Fitting teams I met were all a pleasure to deal with, & I would not hesitate to recommend Cosyseal to my friends & family.