Continuous rooflights, roof domes and SHEV systems for industrial and commercial roofs. Designed, manufactured and installed by a German family business.
Over 40 years of experience in daylight and smoke-extraction technology.
We develop and manufacture our rooflights and roof domes ourselves in Germany.
Installation and maintenance are handled by our own teams.
Whether a large logistics centre or a single roof dome — we handle projects large and small.
If you have any questions, feel free to get in touch at any time.
We manufacture both lines to your individual requirements.
Large-area rooflight solution for long, flat industrial roofs.
Precise spot daylighting for any flat roof — the original.
Technical expertise and custom designs, all from a single source — manufacturer-independent, also for existing systems from other makers.
Hail or storm has damaged your rooflights? We come at short notice to inspect and assess the damage and refurbishment on site.
We refurbish roof domes and rooflights of any manufacturer, precisely fitted and without a complete tear-out.
Professional installation of new roof structures and SHEV systems by our own teams.
Statutory SHEV maintenance with test report, for systems of any make — so your system works when it matters.
Extend existing rooflights with smoke and heat extraction or ventilation.
Spare parts, accessories and custom designs made to measure.
We offer a fast, straightforward replacement of the PC panels for almost any manufacturer, to restore your building's weather-tightness. Get in touch — we'll come out as soon as possible and get an overview on site.
Make an enquiry

A selection of completed projects and detail shots from manufacturing and installation. Click an image to enlarge.













Ask us for a no-obligation quote for a new maintenance contract. We're happy to support you when switching and take over the statutory maintenance of your systems — for any make.
Request a quoteBecome part of a German family business. We're looking for support in engineering, manufacturing and installation — at our Röthenbach a.d. Pegnitz site.
We are looking for an experienced design engineer for the development and design of daylight systems and SHEV systems.
For our production we are looking for a reliable specialist for the manufacture of daylight systems.
As an installer you travel nationwide and install our daylight systems directly at the customer's site.
Tell us about your project — we'll get back to you shortly.
Information pursuant to §5 DDG
Bittermann GmbH Sicherheitstechnik & Beschläge
Administration: Pegnitzstraße 25, 90552 Röthenbach a.d. Pegnitz
Production: Mühllach 19, 90552 Röthenbach a.d. Pegnitz
Managing directors: Renate Raatz and Helmut Bittermann
Phone: +49 911 2399 1600 · Fax: +49 911 2399 160-25
Email: info@bittermann.de
Register court: Nuremberg Local Court · HRB 23316
VAT ID (§27a UStG): DE 241/122/51800
Responsible for content pursuant to §18 (2) MStV: Renate Raatz and Helmut Bittermann, address as above.
We are neither willing nor obliged to take part in dispute resolution proceedings before a consumer arbitration board.