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Document Q of the building regulations, which came into effect on 1st October 2015, (http://www.planningportal.gov.uk/uploads/br /BR_PDF_AD_Q_2015.pdf) requires that all easily accessible doorsets that provide access into a dwelling should be manufactured to a design that has been shown to meet the security requirements of British Standards publication PAS 24:2012.

You can have confidence in the fact that Sunvista has already passed the extremely intensive PAS 24:2012 Enchanced security performance requirements for door sets and windows test and the doors achieve the requirements stated.


Interlocking frame size Sunvista 19mm (¾”) wide interlocking profile.

Compass Glass Ltd has been trading since 1991. We are a south London based company specialising in structural and frameless glass installations in the high end residential sector. We are able to provide frameless glass roof-lights, walk-on if required, glass beams and columns, framed or frameless glass facades, fire screens, structural glass conservatories or boxes and any variety of bespoke glass installations to suit your needs. However, we now have news of an excellent new product that we are able to offer.

We are extremely proud to announce the introduction of the superb Sunvista, virtually frameless, glass sliding door system to our range of products.

The perimeter frames can be concealed within the surrounding structure to create a flush finish on all faces including the base track. The interlocking profiles are only 19mm (¾") wide on face, as can be seen in the image to the right.

Excellent thermal performances are achieved because the 32mm thick insulating units have a centre pane 'U' value of only 1.1W/m²K.

The recessed base track contains an integral drainage chamber system that can, if required, be connected to a Sunvista proprietary gutter.

The system is designed to be virtually maintenance free.

Please visit our FAQ section for more information.

You are welcome to visit our showroom in south London (by prior appointment) to view the system working and to discuss your requirements.


View of a garden through a Sunvista glass door       View of a garden through a typical glass door

Above are scaled, two-dimensional simulations based on an opening 4500 x 2500mm of the same garden scene as viewed through Sunvista with its 19mm interlocking sections and, by way of comparison, a typical sized aluminium framed bi-folding door screen. Which view would you prefer to look through? Sliding doors, in particular Sunvista, can capture more natural daylight than alternative door systems and will allow between 15 and 20% more daylight than typical bi-fold doors.