The Celsius Range

Our Celsius range now comprises solid roof and insulated performance glass offerings, to provide a choice of high quality and thermally-efficient solutions for conservatory retro-fits. Synseal’s very latest new product introduction is undoubtedly the best-designed and quickest-to-fit insulated solid roofing product on the market today.

This exclusive range of performance glass is supplied by Synseal’s Global Glass specialist IGU manufacturing division and is the perfect choice to complement Celsius solid roof.  Celsius Clear (U-value 1.0 W/m2K) sealed double glass units are designed for conservatory window walling.  Celsius One (U-value 1.0 W/m2K) and Celsius Elite (U-value 0.9 W/m2K) sealed double glass units employ specially-formulated tinted coatings and are ideal for overhead roof glazing applications.







“At Synseal we have been monitoring competitor solid roofing products for a while and the market is now ready for our Celsius solid roof.  Sitting neatly alongside our exclusive Celsius performance glass, our new solid roof solution can be summed up in just two words: thermal excellence.”

Steve Brown, Products & Customer Service Director

 “Selecting the right supply partners to complement our Synseal Envirotile was key to the success of Celsius solid roof and with SIPs from Kingspan, roof windows from Velux and fixings from Rapierstar we have sourced the very best products to construct an awesome system of the highest quality.”

Phil Parry, Head of R&D


“Our aim has been to create the best-looking, most thermally-efficient and easiest-to-fit solid roof on the market today, while at the same time delivering full compliance with Building Regulations for new or retro-fit applications. Speed of installation is essential, because on site time = money.”

Neville Gleed, Roofing Technical Manager


“As product designer, my brief was to achieve improved installed thermal performance using proven materials with no inherent design weaknesses to eradicate cold bridging. Our Celsius solid roof is truly warm to provide building extensions that homeowners will be able to use 365 days a year.”

Alan Green, Product Support Engineer



About Synseal

Following a successful management buy-out in 2010 led by Chief Executive David Leng, Synseal has grown dynamically and is today a highly focussed, profitable business with sales in excess of £130 million and over 1200 employees.  Proud of its UK ownership and manufacturing traditions with a trading heritage stretching back over 30 years, Synseal now supplies market-leading conservatory roofs, window and door systems, insulated glass units, hardware, portal frames and ancillary products to a network of fabricator partners.
Thousands of professional installers chose to purchase Synseal products on a regular basis and Synseal recognises and values the loyalty of trade customers, always seeking to find new ways of offering practical support to help Synseal business partners win in the competitive marketplace.
The Synseal product range includes Global or K2 conservatory roof systems incorporating a range of designer orangery solutions, a choice of Legend, SynerJy and Shield 70mm PVC-U window and door systems, Global Glass sealed units which feature the company’s exclusive Celsius performance glass for premium applications, in addition to an Evolve range of fully manufactured and CE Marked specialist PVC-U products which includes bi-fold doors, patio doors and vertical sliding sash windows.
Thermally-efficient Celsius solid roofs and WarmCore “warm aluminium” folding sliding doors are the latest product designs to be introduced by Synseal and both these innovations signal new chapters in this award-winning company’s history, with a continued pledge of delivering high quality products and service excellence to the fenestration industry.

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