Structural glazing in London, drawn in the thinnest lines.
Glazing London designs and installs structural glazing across London: frameless glass extensions, glass box designs, glass roofs and architectural glazing for homes and commercial buildings. Design, engineering calculations, fabrication and installation run as one project, with a free design survey and a line that answers 24/7 on 07399 253464.
Glazing that is the structure, not in it
Structural glazing is glass doing a job a wall or a frame would normally do. Panels are bonded edge to edge with structural silicone, stiffened by glass fins or carried on glass beams, and fixed back to minimal steel, so a glass extension reads as a single transparent volume rather than a conservatory with bars. Done properly it is an engineering exercise first and a glazing exercise second, which suits us: we would rather show you calculations than brochures. It is also the approach conservation officers tend to prefer on period buildings, because a frameless glass link touches the host building lightly and honestly.
What we design & install
Glass box extensions
Fully glazed rear and side-return extensions: frameless walls, glass roof, structural silicone joints and sliding or pivot doors. The classic London move for adding light to a Victorian terrace kitchen.
Glass link extensions
A transparent corridor joining a period house to an outbuilding or new wing. Minimal contact with the host fabric, which is why glazed links pass planning where solid extensions fail.
Glass roofs & rooflights
Frameless flat rooflights, walk-on glass floors and full glass roofs on beams or fins, in double or triple glazed units with solar-control coatings so the room below stays usable in August.
Frameless glazing & screens
Floor-to-ceiling frameless glazing, internal glass walls and gable infills. For shopfronts, facades and office frontages the same engineering runs through our commercial glazing work.
Where the glass guards a drop rather than encloses a room, you want our glass balustrades page; for a full-height opening with French doors, see Juliet balconies.
Specification, briefly
Toughened laminated construction throughout, low-iron glass for true colour on frameless work, and heat soak testing on roof and overhead glazing.
Double or triple glazed units with low-E coatings, argon fill and warm-edge spacers; solar-control coatings on roofs and south elevations against overheating.
Glass fins and beams where transparency matters, slim steel where economy does. Every member sized by calculation, never by rule of thumb.
How a project runs
Design
Free survey and design conversation, with your architect if you have one. We agree sightlines, openings, glass sizes and how the glazing meets the existing fabric.
Engineering calcs
A structural engineer calculates glass thicknesses, fin and beam sizes and fixings for wind, snow and imposed loads. The design goes through building control before fabrication.
Fabrication
Units are made to the approved drawings: toughened, laminated, coated and edge-worked. Nothing is ordered until the structural opening is surveyed as built.
Installation
Our fitters set, bond and seal the glazing, sequenced with your main contractor. The glass itself usually goes in over days, not weeks.
We install to calculations, not around them.
Structural glazing has no tolerance for optimism. We are glaziers and installers: the structural design for every project on this page is calculated by a structural engineer, approved through building control, and installed exactly as drawn. Where planning permission is needed, on listed buildings, in conservation areas, or for larger extensions, your architect leads and we supply the glazing drawings and specifications. If a scheme cannot be engineered safely at a sensible cost, we say so at the survey stage, and we will suggest where a framed aluminium screen gets you most of the look for less of the money.