Direct from the manufacturer · Custom sizes · Made to measure · 10-year warranty
Dachfenster

Roof window

Premium roof windows directly from the manufacturer – with technical project consulting and matching accessories for clean connections.

  • Flat roof and pitched roof: fixed glazing or electrically opening
  • Frameless or framed, many standard sizes available at short notice
  • Custom sizes and large formats up to 600 cm available for projects upon request
  • 10-year manufacturer's warranty according to conditions (accessories/third-party components may vary)
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105 products

Dachfenster
SkyGlasFixed roof window glazing

Maximum light surface, low-maintenance – frameless or framed.
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 400 × 400 mm

Fixed Skylight Pitched Roof

Roof window for pitched roof 40 x 40 cm frameless fixed triple glazed UW 0.9

£201.00 GBP
£201.00 GBP £224.00 GBP
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 400 × 3000 mm

Fixed Skylight Pitched Roof

Pitched Roof Window 40 x 300 cm frameless fixed triple glazed UW 0.9

£783.00 GBP
£783.00 GBP £869.00 GBP
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 400 × 2000 mm

Fixed Skylight Pitched Roof

Sloped Roof Window 40 x 200 cm frameless fixed triple glazed UW 0.9

£487.00 GBP
£487.00 GBP £541.00 GBP
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 400 × 1500 mm

Fixed Roof Window Pitched Roof

Roof window for pitched roofs, 40 x 150 cm, frameless, fixed, triple glazing, U-value 0.9

£421.00 GBP
£421.00 GBP £467.00 GBP
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 300 × 300 mm

Fixed Roof Window Pitched Roof

Pitched roof window 30 x 30 cm frameless fixed triple glazed Uw 0.9

£129.00 GBP
£129.00 GBP £144.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1500 × 3000 mm

Flat roof skylight frameless fixed

Flat roof window 150 x 300 cm frameless fixed triple glazed UW 0.9

£2,616.00 GBP
£2,616.00 GBP £2,903.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1500 × 2500 mm

Flat roof skylight frameless fixed

Flat roof window 150 x 250 cm frameless fixed triple glazed U-value 0.9

£2,269.00 GBP
£2,269.00 GBP £2,519.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1500 × 2000 mm

Flat roof skylight frameless fixed

Flat roof window 150 x 200 cm frameless fixed triple glazed Uw 0.9

£1,085.00 GBP
£1,085.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1500 × 1500 mm

Flat roof skylight frameless fixed

Flat roof window 150 x 150 cm frameless fixed triple glazed Uw 0.9

£1,170.00 GBP
£1,170.00 GBP £1,299.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1200 × 2500 mm

Flat roof skylight frameless fixed

Flat roof window 120 x 250 cm frameless fixed triple glazed Uw 0.9

£1,672.00 GBP
£1,672.00 GBP £1,856.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1200 × 2000 mm

Flat roof skylight frameless fixed

Flat roof window 120 x 200 cm frameless fixed triple glazing Uw 0.9

£1,422.00 GBP
£1,422.00 GBP £1,579.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1200 × 1800 mm

Flat roof skylight frameless fixed

Flat roof window 120 x 180 cm frameless fixed triple glazed Ug 0.9

£859.00 GBP
£859.00 GBP £954.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1200 × 1200 mm

Flat roof skylight frameless fixed

Flat roof window 120 x 120 cm frameless fixed triple glazed Uw 0.9

£573.00 GBP
£573.00 GBP £636.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 3000 mm

Flat roof skylight frameless fixed

Flat roof window 100 x 300 cm frameless fixed triple glazing Uw 0.9

£1,460.00 GBP
£1,460.00 GBP £1,621.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 2500 mm

Flat roof skylight frameless fixed

Flat Roof Window 100 x 250 cm frameless fixed triple glazed Uw 0.9

£1,052.00 GBP
£1,052.00 GBP £1,167.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 2000 mm

Flat roof skylight frameless fixed

Flat roof window 100 x 200 cm frameless fixed triple glazed Uw 0.9

£812.00 GBP
£812.00 GBP £901.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 1500 mm

Flat roof skylight frameless fixed

Flat roof window 100 x 150 cm frameless fixed triple glazed Uw 0.9

£644.00 GBP
£644.00 GBP £715.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 1200 mm

Flat roof skylight frameless fixed

Flat roof window 100 x 120 cm frameless fixed triple glazed UW 0.9

£561.00 GBP
£561.00 GBP £623.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 1000 × 1000 mm

Flat roof skylight frameless fixed

Flat roof window 100 x 100 cm frameless fixed triple glazing Uw 0.9

£441.00 GBP
£441.00 GBP £490.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 2500 mm

Flat roof skylight frameless fixed

Flat roof window 80 x 250 cm frameless fixed triple glazed Ug 0.9

£836.00 GBP
£836.00 GBP £928.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 2000 mm

Flat roof frameless fixed skylight

Flat roof window 80 x 200 cm frameless fixed triple glazed Uw 0.9

£657.00 GBP
£657.00 GBP £729.00 GBP
Quick Start

Which roof window design suits your roof?

Here you will find fixed skylights - frameless or framed, for flat and pitched roofs. For special installation situations or large formats, custom-made versions are also available upon request.

Festverglaste Dachfenster

Fixed glazing

Elektrisch öffnende Dachfenster

Electrically opening

Dachfenster Sondermaß

Made to measure

Dimensions & Installation – Briefly Explained

For your roof window to fit perfectly, the dimensions of the upstand and the roof structure are crucial. For flat roofs and pitched roofs: The window system remains comparable - the connection (upstand, sealing, installation set) is chosen to match the installation situation.

  • Order dimension: internally measured opening at the upstand (without interior cladding, depending on the drawing).
  • Upstand: Height and slope must match the roof structure and drainage.
  • Version: fixed or electrically opening; frameless or framed - depending on appearance and requirements.
  • Glazing: double or triple thermal insulation, depending on the system and application.

If you are unsure (roof pitch, sealing, special connections): Request a custom project and send us the project data - we will check feasibility and recommend the appropriate system solution.
SkyGlas.de
Dimensions & Installation

Correctly understanding order size, upstand, and internal dimension

The drawing exemplifies how order size, upstand spacing, and internal dimensions relate to each other. For the correct selection of a roof window, it is crucial that not only the visible dimensions but also the construction, connection, and interior finishing are correctly considered.

  • Order Size: Dimension of the ordered roof window or skylight
  • Upstand Spacing: constructive dimension between the upstands, usually with a technical allowance
  • Internal Dimension / Finished Area: relevant for interior finishing, rafter spacing, and cladding
  • Upstand Height: to be considered depending on the system, roof structure, and connection solution

Important: The exact dimensions depend on the roof type, window type, frame design, and glazing. Use standard sizes directly from the product range. For custom-made roof windows, unclear measurements, or special connections, we will check feasibility on a project-by-project basis.

 Request a Custom Project
Popular categories

Quick guide to the main types of roof windows

Dachfenster Flachdach – Sondermaß – Detailansicht Flat Roof & Pitched Roof Skylights
Dachfenster Schrägdach – rahmenlos – feststehend – 3-fach – 600 × 2000 mm – Detailansicht Custom skylights
Dachfenster Flachdach – rahmenlos – elektrisch öffnend – 2-fach – 1435 × 2535 mm Electric skylight
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