Shapes
Circular, triangular, trapezoidal
Bespoke Shapes & Sizes · Overhead Glazing
CUSTOM-SHAPED ROOFLIGHTS
Custom-Shaped
Rooflights
Rooflights for triangular, trapezoidal, raking and irregular openings, with the glass and frame developed from agreed angles, dimensions and templates.
Circular to irregular
Survey or template
UK manufacture
10-year IGU seal warranty
Technical support
Specialist project review
The shape of the opening. Accurately defined.
CLEAR DETAILS. EASY CHOICES.
Find what you need.
Product information, installation
and documents in one place.
BESPOKE SHAPES & SIZES
Designed for your project.
Custom-shaped rooflights resolve openings whose edge geometry cannot be described by a standard rectangle. Diagonals, angles, radii and tolerances must be agreed before the glass is cut and processed.
This page concerns shape and setting out. Standard rectangular fixed rooflights, large single-unit glazing, multi-panel modular layouts and circular rooflights each have their own product page.
Coordinated drawings, site measurements or a rigid template establish the final shape. The glass support and frame corners are designed around the approved geometry and applicable loads.
SHAPESCircular to irregular
SETTING OUTSurvey or template
DRAWINGSIssued for approval
THE COMPLETE SYSTEM
Specification at a glance.
Shapes
Circular, triangular, trapezoidal
Irregular work
Survey or rigid template
Large openings
Single or modular panes
Joints
Structural silicone where suitable
Glass
Project-specific safety build-up
Frame
Welded or fabricated aluminium
Finish
Custom RAL available
Feasibility depends on glass processing, edge geometry, support, loads, access and the tolerances achievable in the surrounding construction.
YOUR PROJECT. YOUR OPTIONS.
Choose the right glass and finish.
01
Surveyed angles and raking edges
The frame and glass can follow triangular, trapezoidal or irregular edges, subject to processing, support and installation limits.
02
Triangular and trapezoidal
Angled panes can follow roof edges, corners and architectural grids.
03
Panel divisions for complex geometry
Where a complicated shape needs more than one pane, the division, support and weather-sealed joints are agreed through a modular design review.
04
Templates and surveys
Rigid OSB or plywood templates can capture irregular existing openings where drawings are insufficient.
FROM ENQUIRY TO INSTALLATION
The service to suit your rooflight.
Supply-only is available for suitable fixed flat rooflights. Our specialist systems are supplied with installation by Overhead Glazing; replacement-glass work is assessed individually.
01
Send the project information
Share drawings, approximate dimensions, postcode, roof build-up and intended use.
02
Technical review
We review geometry, glass, loads, drainage, access and the supporting construction.
03
Approve the drawings
Project-specific drawings confirm the arrangement before anything is manufactured.
04
Manufacture and install
The approved system is manufactured and installed by Overhead Glazing. Supply-only is available for suitable fixed flat rooflights; the quotation confirms the service scope.
The roof structure, prepared upstand, waterproofing, lifting and access responsibilities are agreed with your project team before work begins.
YOUR PROJECT PRICE
Quoted to your specification.
Based on the glass, dimensions and agreed service.
LEAD TIME
Agreed for your project.
Programme confirmed after specification and drawing review.
BEFORE MANUFACTURE
Site measure
Ask us to check the opening and installation dimensions.
OUR SPECIALIST TEAM
Installation
Fitting, access and lifting requirements agreed with your project team.
Final cost and programme are confirmed for your specification and agreed scope.
THE DETAIL, FROM EVERY ANGLE
Bespoke Shapes & Sizes gallery.
Select a photograph
to look closer.
Three-panel trapezoidal rooflight
Triangular rooflights on an extension
Three custom shapes
Interior view
Angled exterior view
Three shaped flat rooflights following the architecture.
More from our projects
OVERHEAD GLAZING IN MOTION
See our rooflight work.
Our bespoke rooflight film · loads on play
Play film
THE DETAIL MAKES THE DIFFERENCE
Accurate geometry before expensive glass.
Dimensions, diagonals, angles and tolerances are checked through approval drawings or site templates before manufacture begins.
PERFORMANCE WITH CONTEXT
Performance for your project.
Glass, frame, support and intended use are considered together.
A round opening needs a circular system.
Circular rooflights use rolled and welded frames. They are covered separately from the angled and irregular shapes discussed here.
Panel divisions with purpose
Oversized or complex shapes can be divided into practical panes while aligning joints with the architecture below.
Manufacturing limits made clear
Glass size, curvature, edge support, transport and lifting constraints are explained before the design is fixed.
Confirmed for your project
Feasibility depends on glass processing, edge geometry, support, loads, access and the tolerances achievable in the surrounding construction.
BEFORE YOU CHOOSE
Useful answers.
Can you make a triangular rooflight?+
Yes. Triangular and trapezoidal glazing can be designed where edge support, glass processing and installation access permit.
How do you measure an irregular opening?+
We may use coordinated dimensions, diagonals, a site survey or a rigid template depending on the shape and stage of construction.
What is the maximum size?+
Maximum size depends on glass type, shape, support, loads, transport and lifting. Modular arrangements can resolve larger openings.
Can joints align with walls or doors below?+
Yes. Panel divisions can be coordinated with architectural lines where glass sizes and structural requirements allow.
Can unusual shapes be triple glazed?+
Often yes, but geometry, weight and edge construction must be reviewed for the specific unit.
Do you provide approval drawings?+
Yes. Bespoke drawings are issued for review and sign-off before manufacture.
What warranty applies to this product?+
Qualifying insulating glass units carry a 10-year seal warranty, subject to the written terms supplied with the order. This is not a blanket guarantee against breakage or a 10-year frame or installation warranty. Installation labour carried out by us is covered for five years, subject to the written terms.
CUSTOMER FEEDBACK
Hear from our customers.
Read feedback about Overhead Glazing on Google.
LET’S TALK ABOUT YOUR PROJECT
Have an unusual roof opening?
Share your postcode, drawings and project details. We’ll help confirm a suitable specification.
The service to suit your rooflight.
We’ll use these details to respond to your enquiry. Privacy policy
Your enquiry goes straight to our team.
PROJECTS & PRACTICAL ADVICE
From the drawing to the roof.
PRODUCT IN CONTEXT
Three shaped flat rooflights following the architecture.
Each unit is manufactured around its individual angled opening, creating a coordinated series of non-standard rooflights.