The useful answer
For a Korniche lantern, confirm which generation, footprint and glass option is being offered. The room-side view, current upstand detail and chosen glass are more useful comparison points than a brand-only starting price.
Make the roof quotation usable by your builder
Give the supplier a roof and ceiling plan with the proposed location and dimension basis clearly marked. Ask for the matching current installation information before the upstand is built. A roof-opening measurement should not be entered into a field requiring finished external kerb dimensions.
Compare ridge, hip and rafter positions on a drawing for the actual size. Different footprints can produce a different framing pattern from the one in a promotional image. Keep the glass specification alongside that drawing, including the information needed to discuss daylight and solar gain. Identify who assembles the frame, handles the glass and completes the roof weathering; product supply and roof completion are distinct tasks.
A situation you can apply to your own project
A homeowner receives a price for a standard-sized lantern while the builder has already drawn a bespoke roof opening. Before comparing brands or paying a deposit, reconcile the dimensions using the chosen model’s detail. A superficially cheaper size is not a saving if it requires unplanned alterations to the roof.
Compare the practical details
| Decision | What it means for your project |
|---|---|
| Generation | Confirm the current model and relevant installation document. |
| View from below | Compare the actual ridge and rafter layout at the proposed footprint. |
| Glass | Record the exact option and its relevant light and solar data. |
| Roof interface | Agree support, finished upstand and weathering responsibility. |
Work through the specification
Where this brand fits your research
Roof-lantern system research. This is an independent buying reference, not a statement that every listed system is available from Bifoldsandmore. Ask us to confirm availability and suitability for your project.
Identify the product on your quotation
Roof-lantern reference
Korniche publishes a redesigned aluminium roof lantern with a fixed 25° pitch. Ask which generation and layout your quotation describes.
Glass matters
The manufacturer discusses solar reflection and light transmission when choosing glass for a sunny aspect. Ask for the exact glass option and its figures rather than a colour description alone.
Dimension basis
Request the applicable current installation drawing and reconcile product, upstand and roof-opening dimensions before your builder constructs the interface.
Build a useful shortlist
Use one opening schedule for every supplier. Keep dimensions, panel layout, finish, glass and installation scope consistent, then identify any differences explicitly. Ask for the visible sections and clear opening on a drawing rather than comparing isolated headline figures.
| Decision | Evidence to request |
|---|---|
| Appearance | A drawing for your opening, finish sample and hardware selection. |
| Operation | An opening sequence, everyday-access arrangement and clear passage dimensions. |
| Performance | Figures and supporting information applicable to the quoted complete configuration. |
| Aftercare | Written coverage, exclusions and the business responsible for support. |
Your checklist before the next conversation
- Model and drawing revision
- Dimension basis confirmed
- Glass option written in full
- Internal and external finishes
- Roof and glazing installation roles
Sources and specification checks
Use these primary references to check the product or technical point discussed. Match the current document to your exact system and project. Brand research does not confirm that we supply every model.
Questions people ask
Can you supply this exact brand?
Availability is confirmed individually. Include the model in your brief and ask us to confirm the proposed supply and installation arrangements before ordering.
Is this a brand ranking?
No. The purpose is to make the actual specification and scope comparable; the best fit depends on your opening and priorities.