Mr Weißer, even the most innovative building material is of little use without good craftsmen and women. As a master demonstrator, what do you teach the next generation of craftsmen and even the old hands?

Unfortunately, modern construction methods, especially large-format and element-based construction, are not covered in the curriculum. For this reason, we are constantly working with our processors to optimize production quality where necessary. For example, when processing large formats such as Ytong Jumbo or calcium-silicate block elements. That's why we train not only apprentices, but also skilled craftsmen in the necessary knowledge and correct techniques for handling large-format building materials. After all, only if everyone involved uses the material correctly will there be no construction delays or, worse still, processing errors and construction defects. That's why we provide valuable, practical tips and tricks.

Are you a strict teacher?

No. However, there are some basics and standards that are important in processing that have a significant impact on the reliability of execution. In the beginning, there is a little skepticism here and there. What is he trying to tell me? My message is: pay attention to the details! I always say that masonry can be read! Experts can see at first glance how conscientiously the work has been done. It makes me a little proud when I walk around the site on my own or with a foreman during follow-up visits and see how well the work has been done: from the first floor to the roof, the craftsmen took everything they were given to heart and followed the instructions and tips. That's a different level of workmanship.

Does a master demonstrator also help the customer?

This is another important area. For example, we support the buyers of a Ytong Bausatzhaus prefabricated house. We brief the builders on the basis of the construction plans and act as a contact person. We are responsible for practical support and instruction, for example for the roofs and ceilings, for creating the corners of the building and for answering all questions within the scope of our manufacturer recommendations. And there are a lot of questions, because most of our customers come from completely different professions.

Would we always find you on a construction site?

No, I also consult with contractors and attend trade fairs. A master demonstrator travels a lot and talks to all kinds of people in the construction industry. Our Xella team "O41" provides training and advice in German regions like Berlin, Brandenburg and Mecklenburg-Western Pomerania. We meet new people every day, that's the great thing about being a demonstration master.

That sounds like years of experience from the ground up.

I am amazed myself when I look back over the past few years. I trained as a tiler, became a master tiler and was self-employed for a long time. Then I qualified as a master bricklayer and worked in the real estate industry as a technical employee/construction manager. That's how I came to Xella more than five years ago.

Even master demonstrators never stop learning?

Exactly, standing still means going backwards. As part of my work, I qualified as a DEKRA-certified expert for building damage assessment in the masonry and concrete construction trades. This has broadened my horizons immensely and helps me be more professional/technical and objective in my day-to-day business. I want to be perceived by all sides as a competent and neutral partner.

What are the next new skills that will be needed in the construction industry?

Modern and innovative technologies will increasingly find their way into the construction industry in the future. Our latest project: a power suit, or exoskeleton. Almost everyone knows about back pain. The exoskeleton makes work much easier, protecting and supporting the body/back when lifting, holding and lowering heavy loads. Young people see the effects of heavy physical work on their older colleagues every day. The exoskeleton is another innovative project from Xella to relieve our workers. This support is also a unique selling point compared to our competitors in the market.

It does not come cheap.

So I predict that this technology is already on its way. It will quickly become widespread in all areas to reduce the burden on human capital. I mean, be wise before you do harm! Our young colleagues, at least that's what I've noticed, are particularly tech-savvy and interested, and they want to do their daily work in a modern and innovative way. From January 2024, the new generation of Apogee will be ready for action. Be curious! The future today.

With all your experience, what is the most important piece of advice you can give to all builders, new and old?

It's simple: a house is always the best retirement plan! If you don't lose touch with maintenance, you'll be spared any major surprises. For many, the journey is the reward and you get to express yourself fully in the design of your home. But in return, you will have a beautiful home and a well-maintained property as an investment.