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Interior work
Heinz Mänz Ausbau

If you want to master challenges, you need a strong partner: A partner that impresses through performance, precision, service and quality.
The Bohle Group, headquartered in Gummersbach, and Heinz Mänz Development GmbH, headquartered in Hanover, have joined forces to expand their core competencies in the area of interior construction.
Because a strong association can assert itself even better in the market. So, look forward to new successes with a proven team.
A strong bond
In 1953, Heinz Mänz Acoustic und Dry Construction GmbH was founded in Hanover. Over the years, the company has made a name for itself for quality services and highest standards in dry interior finishing - and not only within the borders of Germany. Independent sister companies were established at various locations in Germany and Europe as a result of planned expansion.
In 2011, the Mänz company was integrated into the Bohle Group. The Bohle Group has its headquarters in Gummersbach and is an owner-managed company. BOHLE combines the areas of insulation technology, interior design, fire protection and services under one roof.
The Bohle Group is proud to have maintained and expanded its market position for many years with a team of reliable and motivated employees. The long-standing cooperation with customers and friends is the proof of

  • customer satisfaction
  • timeliness
  • quality awareness and
  • budget security

This will also remain the focus of our business in the future.


Do you need an expert opinion from our publicly sworn experts, or would you like to have something tested? Or do you need a qualified second opinion? With our many years of experience, continuous further training and state-of-the-art expertise, we are also your competent partner for general questions on problem solving in interior design

Not all standards are the same, because the devil is in the details. You have to walk safely on firm ground before you start tightrope walking. Comparison is important: That's why even with standard solutions, we always offer you a little more and invite you to compare with the competition. Because with us, - even when it comes to basic services, – you always have the right to the best possible execution.

Let's challenge the limits of technical possibilities together!
Special solutions are always individual solutions. No two are alike and each one is a challenge for our creative employees. Our many years of experience, the continuous further training of our employees and the application of the latest technology guarantee you optimal implementation of your ideas. Tell us about your ideas – we make them possible!

When aesthetic meets technology ...
Design objectives place the highest demands on architects, planners and the executing trades. They should not only be highly functional but should also especially attractive. This isn’t just a question of professional competence – it also calls for good taste, creativity and artistic skill. Get information from us about possibilities, technology and products to make interiors attractive. You've got the ideas, and we bring them to life, always ahead of the curve and with a keen sense of zeitgeist and aesthetics!

Forget about general contractors - count on us as a complete supplier!
All interior fittings from a single source: Avoid friction losses and use synergy effects that save time and money! Rely on an efficient overall concept - with Heinz Mänz, your competent partner. Thanks to current market knowledge, cost awareness and qualified partner companies from various trades, we can offer you complete solutions with a guarantee for the highest quality. Forget the conventional general contractors - take advantage of the added value we bring as a full-service provider. Ask us for references and see for yourself!

Even we can't help you fly. But we give your ideas momentum!
Heinz Mänz GmbH is actively involved in research and development in the interior design market. Ultra-modern machines and technology, openness and curiosity for new products and processes as well as our in-house quality assurance system guarantee you an order execution that beats the current standard. The future begins anew with us every day. Call us – we'll make it happen!

Due to our long-standing membership in the Dry Construction Quality Association we are RAL certified. This means that we are run by independent experts from the Dry Construction Quality Association and are randomly monitored by third parties.


 Your partner for high-quality interior finishing and dry construction solutions in the following areas:

  • Banks, insurance companies, financial service providers
  • Office and administration buildings
  • Shopping malls and salesrooms
  • Research and educational institutions
  • Leisure and sports facilities
  • Hotels and catering
  • Industrial properties
  • Hospitals, retirement homes, practices
  • Trade fairs and showrooms
  • Museums and cultural sites
  • International properties