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 Flachdach – rahmenlos – feststehend – 3-fach – 800 × 1800 mm

Flat roof frameless fixed skylight

Flat roof window 80 x 180 cm frameless fixed triple glazing UW 0.9

£573.00 GBP
£573.00 GBP £636.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 1500 mm

Flat roof skylight frameless fixed

Flat Roof Window 80 x 150 cm Frameless Fixed Triple Glazed U-value 0.9

£585.00 GBP
£585.00 GBP £650.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 1200 mm

Flat roof frameless fixed skylight

Flat Roof Window 80 x 120 cm Frameless Fixed Triple Glazed U-value 0.9

£549.00 GBP
£549.00 GBP £610.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 1000 mm

Flat roof frameless fixed skylight

Flat roof window 80 x 100 cm frameless fixed triple glazed Uw 0.9

£449.00 GBP
£449.00 GBP £498.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 800 × 800 mm

Flat roof frameless fixed skylight

Flat Roof Window 80 x 80 cm Frameless Fixed Triple Glazed U-value 0.9

£432.00 GBP
£432.00 GBP £479.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 3000 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 300 cm frameless fixed triple glazed Ug 0.9

£932.00 GBP
£932.00 GBP £1,034.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 2500 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 250 cm frameless fixed triple glazed Uw 0.9

£729.00 GBP
£729.00 GBP £809.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 2000 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 200 cm frameless fixed triple glazed UW 0.9

£597.00 GBP
£597.00 GBP £662.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 1800 mm

Flat roof skylight frameless fixed

Flat Roof Window 60 x 180 cm Frameless Fixed Triple Glazed UW 0.9

£537.00 GBP
£537.00 GBP £596.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 1500 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 150 cm frameless fixed triple glazed Ug 0.9

£488.00 GBP
£488.00 GBP £541.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 1200 mm

Flat roof skylight frameless fixed

Flat roof skylight 60 x 120 cm frameless fixed triple glazed U-value 0.9

£478.00 GBP
£478.00 GBP £530.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 900 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 90 cm frameless fixed triple glazed UW 0.9

£410.00 GBP
£410.00 GBP £455.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 600 × 600 mm

Flat roof skylight frameless fixed

Flat roof window 60 x 60 cm frameless fixed triple glazed UW 0.9

£287.00 GBP
£287.00 GBP £319.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 500 × 3000 mm

Flat roof skylight frameless fixed

Flat roof window 50 x 300 cm frameless fixed triple glazed Ug 0.9

£803.00 GBP
£803.00 GBP £891.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 500 × 1500 mm

Flat roof skylight frameless fixed

Flat Roof Skylight 50 x 150 cm Frameless Fixed Triple Glazed UW 0.9

£452.00 GBP
£452.00 GBP £502.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 500 × 500 mm

Flat roof skylight frameless fixed

Flat Roof Window 50 x 50 cm Frameless Fixed Triple Glazed UW 0.9

£200.00 GBP
£200.00 GBP £237.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 400 × 3000 mm

Flat roof skylight frameless fixed

Flat roof window 40 x 300 cm frameless fixed triple glazing Uw 0.9

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

Flat roof skylight frameless fixed

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

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

Flat roof frameless fixed skylight

Flat roof window 40 x 150 cm frameless fixed triple glazed Uw 0.9

£421.00 GBP
£421.00 GBP £467.00 GBP
Dachfenster Flachdach – rahmenlos – feststehend – 3-fach – 400 × 400 mm

Flat roof skylight frameless fixed

Flat Roof Window 40 x 40 cm frameless fixed triple glazing Uw 0.9

£201.00 GBP
£201.00 GBP £224.00 GBP
Dachfenster Flachdach – gerahmt – feststehend – 3-fach – 600 × 900 mm

Flat roof framed fixed window

Flat roof window 60 x 90 cm framed fixed triple-glazed Uw 0.5

£738.00 GBP
£738.00 GBP £876.00 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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