Roof only
A clean, highly insulated flat roof where overhead glazing is not required.
Contemporary Roofs & Extensions
Flat Roofs & Skylights
A pre-engineered flat-roof system with the option of clean edge-to-edge skylights or a raised lantern, designed as one complete roof.
Made to measureSurveyed by PM WindowsInstalled by our team
0.12Roof U-value W/m²K*
5.6mUnsupported span*
0, 1 or 2Glazed apertures
225mmInsulation zone*
Bring daylight from above
Start with the roof, then place the light precisely.
This route combines a highly insulated flat roof with zero, one or two glazed apertures. PM Windows helps choose a flat skylight or lantern, positions it around the room and coordinates fascia, soffit, drainage and internal finish.
01
Put light where it matters
Roof glazing can brighten the centre of a plan where vertical windows cannot.
02
Control comfort as well as daylight
Glass, insulation, ventilation and solar control are considered together.
03
Engineer the complete opening
Kerb, structure, drainage, finishes and compliance are coordinated before installation.
Tailored to the project
The decisions we make with you.
The best result comes from resolving the technical and visual details together, then recording them clearly in the quotation.
Flat skylight
Edge-to-edge glass and a slim aluminium surround for a quiet contemporary ceiling detail.
Roof lantern
A raised glazed feature that adds height and a stronger focal point to the room.
One or two apertures
Separate roof openings can focus daylight over different kitchen, dining or living zones.
Fascia & soffit
Overhang, fascia depth, soffit finish and rainwater details are coordinated with the elevation.
Internal ceiling
Plastering, reveals and lighting positions are planned before the roof is installed.
Colours & finishes
Quietly coordinated or deliberately contrasting.
Availability varies by product. Explore useful RAL starting points, compare finish types and save a shortlist before PM Windows confirms the exact options for your chosen system.
Check finishes →Anthracite Grey
Jet Black
Traffic White
Warm Grey
Bronze Tone
Special Finish
Product specification
The important facts, made easy to compare.
These headline capabilities are a starting point. The exact product, sizes, performance, glass, security, finish and guarantee will be stated in your written quotation.
Selected, specified, surveyed and installed by PM Windows using a proven specialist system.
- Roof system
- Pre-manufactured insulated flat roof
- Roof thermal performance
- U-value 0.12 W/m²K*
- Insulation zone
- 225mm*
- Unsupported span
- Up to 5.6m, design dependent*
- Glazed apertures
- Zero, one or two flat skylights or lanterns
- Maximum rooflight zone
- Up to 5.7m × 3.0m, design dependent*
- Flat skylight glass
- Edge-to-edge glass with 1.2 W/m²K centre-pane route*
- Engineering
- Postcode-engineered; approvals confirmed per project
*Maximum sizes, performance and guarantee terms depend on the selected system, dimensions, configuration, glass, location and installation. Final project values are confirmed in writing.
Product inspiration
Flat roofs with daylight designed in.
Official product photography shows complete flat-roof extensions with flat skylights and lanterns. PM Windows installations will remain separately labelled in the gallery.
Frequently asked questions
Useful answers before you choose.
How do I avoid a room overheating?
The answer is a combination of glass specification, orientation, ventilation and shading. PM Windows will assess the complete space rather than relying on one headline figure.
Will Building Regulations be required?
It depends on whether the work is new, replacement, glazed, solid or structural. The applicable route will be confirmed before work begins.
Can lighting be incorporated?
Many roof and pelmet arrangements allow integrated spotlights or pendant positions when they are planned early.
Ready to take the next step?
Bring us your plans, dimensions or simply an idea.
We will shape the arrangement, explain the options and provide a clear written quotation for supply and installation.