• rooflights
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Roof Lights

Northolt Glass’ mono pitched or flat glass rooflights are a great cost effective way of introducing natural light through a roof opening. Whilst most cost effective when supplied in square or rectangular form, mono pitched glass rooflights, skylights and atriums may be shaped to accommodate an applications requirement. Circular, triangular, bespoke shapes and raked edge glass rooflights can all be provided.

Mono-pitched glass rooflights, skylights and atriums are common place in many flat roof and tiled roof applications. They may also be utilised to complete the entire roof on glass roof extensions, conservatories and garden rooms.


Mono Pitched glass rooflights, skylights and atriums can be provided at almost any dimensions. Rooflight sizes tend to start at 700mm x 700mm due to supporting upstand dimensions and the level difference typically witnessed between the glass rooflight and the ceiling below. Glass rooflights, skylights and atriums can be provided up to 5m spans before additional supporting steelwork/splices will need to be considered. Whilst much larger extents are feasible, the design will need to be developed to incorporate a suitable water management system and facilitate maintenance and cleaning.

Mono Pitched glass skylights, rooflights and atriums can be designed to accommodate any pitch above 5 degrees. However it is worth noting that regardless of rooflight pitch your will normally with experience some for of water retention on the glass (e.g. the small water beads that you will find ‘clinging’ to your steep pitch car windows after a downpour).

Frameless Glazing

Frameless Glazing (or near frameless glazing) may be utilsed within bespoke mono pitched glass rooflight, skylight and atrium designs. Such designs will always consist of a perimeter frame to complete and weather the rooflight; however such frames can easily be concealed by the internal finishes below. Should your glass rooflight/skylight application be relatively small, the rooflight may be able to be supplied in just 1 No. glass unit (no intermediate sightlines). Long, smaller span glass rooflight and atrium applications may also be provide with no intermediate rafters bars. With intermediate glass to glass rooflight joints consisting of a flush silicone seal both internally and externally. Larger glass rooflight/atrium applications can include structural glass fins with no additional support or smaller structural glass fins with additional stainless steel glass fittings and brackets. All frameless glass rooflight designs will produce a complete flush silicone jointed external finish.

Structural Glazing

Structural Glazing (or structurally adhered applications) may be utilsed within bespoke mono pitched glass rooflight, skylight and atrium designs. Such designs will always consist of a perimeter frame to complete and weather the rooflight; however such frames can easily be concealed by the internal finishes below. Should your glass rooflight/skylight application be relatively small, the rooflight may be able to be supplied in just 1 No. glass unit (no intermediate sightlines). Long, smaller span glass rooflight and atrium applications may also be provide with no intermediate rafters bars. With intermediate glass to glass rooflight joints consisting of a flush silicone seal both internally and externally. Larger glass rooflight/atrium applications will require intermediate rafters which may be provided in a large range of extrusion sections. More frequently glass rooflights are supplied with box section rafters. All structural glass rooflight designs will produce a complete flush silicone jointed external finish.

Framed (Patent) Glazing

Framed Glazing or Patent Glazing may be utilised within bespoke mono pitched glass rooflight, skylight and atrium designs. Such rooflight designs consist of aluminium box section rafter and transom supporting extrusions. The rooflight glass is then retained using EPDM or silicone based gaskets and pressure caps (subsequently concealed by cover/feature caps). Framed glazing systems can heavily rely on a secondary weep water management system, making it imperative that such rooflight details are installed in accordance with the systems tested details. Patent glazed rooflights are more recently provided in modern box section rafters, however many dated glass rooflight structures may utilise Victorian style T section rafters. Northolt Glass processes the ability to undertake such refurbishment contracts, where system extrusions need to be developed to meet current building standards whilst retaining the existing glass rooflight/atriums character and aesthetics.

Walk-on Glazing

Walk on glass rooflights, skylights and floors are becoming more common place with the high end residential and commercial markets. Walk on glass rooflights are great accompaniment to terrace areas and basement rooms, when natural light or transparency is required. Walk on glass floors are also often utilsed to allow naturally light to travel between multiple floors and to close of existing light wells. Circular, triangular, bespoke shapes and raked edge walk on glass rooflights, skylights and floors can all be provided.

Walk on glass specifications may also be integrated within bespoke design geometries and/or in conjunction with other glass products to provide a unique architecturally glazed area. We have previously been asked to design a walk on glass specification roof to be bespoke conservatory structure with perimeter structural glass balustrade. All to provide both a conservatory and accessibly walk on glass terrace area.