Cavity Closers


Portico GB Ltd manufacturers the Eurocell and Cavalok Cavity Closer.

This product is often over looked by developers but it is now more and more under scrutiny for many reasons:

Allows better control of aperture sizes and speed of build as windows can be manufactured off drawings instead of waiting for site surveys, by then site are needing windows installed anyway.

Thermal insulation is extremely important and our cavity closers meet the best thermal levels available.

Also we can produce cavity closers to fit cavities up to 300mm as standard (wider cavities available on special order) these larger cavity sizes are again a result of the ever increasing pressure to meet the Eco standards now effecting all new builds.

Fire resistance is also an ever growing problem and affects, especially timber frame buildings, we envisage the need for a fire resistant cavity closer for timber frame buildings being the next requirement and to keep ahead of the game we now have available a bracket to take the fitting of the cavity closer and window frame as the simple pinch batten will have to be removed from the build process to facilitate the cavity closer. As well as a 'Fire Sok' giving a 1 hour fire protection barrier.

We manufacture cavity closers in house therefore can respond to fast turnaround requests, we supply cavity closers to the trade as well as with our windows so if you require a quotation for Cavity closers whilst using windows by others please contact us for not only a competitive price but sound advice.


Expert window advice


Portico GB Ltd has been successfully supplying and installing PVCU and Aluminium windows, doors, patio door's, conservatories since 1989 with comprehensive national coverage, Service, Quality, Flexibility and Safety with a tried and tested product, lead by very experienced individuals backed up with a team of qualified staff and a solid financial foundation all combines to allow us to confidently meet the commitments of any size project or national contract deal now and in the future.




We pride ourselves on the quality of our product and the flexibility of our highly trained staff to ensure a fast, efficient and quality service.



Gavin Clayton
Windows Operations Manager

We understand that deadlines are extremely important and are set up to respond to the demands of the industry with our tried and tested product range and workforce.



Jason Campbell
Commercial Manager



Quick contact







01359 244299





01359 244220

01359 244232




Portico GB Ltd

Unit 9
Woolpit Business Park
Windmill Avenue
Bury St. Edmunds
IP30 9UP



Portico GB Limited


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