7 September 2026

How construction innovator Drystack learned to focus in order to grow

Drystack Romiwest ondernemersverhaal
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Building a façade faster and more sustainably, without traditional mortar and without experienced bricklayers. Brick façades that can later be dismantled and reused. That is the innovation with which Drystack from Heerhugowaard makes a difference. It sounds so simple, but the journey from drawing board to production was anything but.

Founder Dennis Deen started as a bricklayer in construction after his time in the Marines. He gained several qualifications and became a manager at a building contractor. In 2006, he bought a scaffolding company. His company grew rapidly. Dennis: “At the peak, there were around a hundred to a hundred and twenty people working on-site. We worked extremely hard, but actually barely made any money.” The problems in the construction sector did not escape him: the structural shortage of bricklayers and the dependence on the weather to be able to lay bricks. “I saw that the real problem lies in the use of mortar. You need skilled tradespeople for that and good weather. What if you could build a facade without mortar? What if someone without years of training, but with a brief instruction, could stack bricks?”

From idea to first commission

The idea for a circular stacking system for bricks was born. This system consists of calibrated bricks and specially developed intermediate layers, or ‘layers’. By cutting extremely precise grooves into the bricks, façades can be built up layer by layer. As the bricks are not fixed together with mortar, they can be dismantled later and reused. This saves raw materials and makes the system highly sustainable and circular. Furthermore, the system is compatible with 80 to 90% of all bricks, giving architects considerable design freedom.

Dennis discovered that developing his concept took a lot of time. In 2016 and 2017 he sold his existing business to focus fully on the innovation. In 2018 Drystack was founded. A large contract for around 750,000 bricks soon followed. “That was great of course,” Dennis says. “But for us it was backbreaking, because we were working 24 hours a day. However, this project provided proof that our concept could work on a large scale.”

Fall down, get back up and start again

The development demanded much more than a good idea. Dennis: “We needed a mechanical engineer to optimise the production of the necessary bricks, we had to jump through countless hoops for certification and you have to convince builders of your story. That took a lot of money. And sometimes you make a major slip-up. For instance, we invested heavily in a machine builder who promised to solve a technical problem. Not a bit of it. Nine months later, we had to pull the plug. We lost a lot of money and had incurred a delay of a year and a half. But then again, you made a decision with the information you had at that time. You are allowed to be angry for a week, but after that you have to just get on with it.”

Not everyone needs to be your customer

For the next growth phase, Drystack got in touch with Birgitta Kramer from ROM InWest. The company was looking for funding for further scaling up and thus also ended up in the ATB programme. That programme brought an important insight: a good product does not necessarily mean you have to try to convince everyone. “The first question at the ATB programme was: have you researched whether anyone actually needs your product? Then I realised that we had been running around like headless chickens. During the programme, it became clear how important it is to know precisely who your client is. Not the contractor who only participates because it is in a tender, but the party that is intrinsically motivated to innovate.” Drystack is therefore focusing increasingly consciously on frontrunners. First serving one client well, ensuring quality, getting a repeat order. Dennis: “Grass doesn't grow any faster by pulling it. You have to go through all the phases.” Two years ago, Bas Peereboom joined Drystack as commercial director, after having worked at a corporate for seventeen years. He focuses on sales, marketing and communication. Bas: “Construction is conventional and risk-averse. So we have to be reliable and guarantee quality to get big contracts. And if a market leader like Dura Vermeer is going to use our concept, then you know it's going to take off. Building long-term relationships and becoming a construction partner is crucial.”

Valuable collaboration

The collaboration with ROM InWest is meaningful for Drystack. The team can brainstorm with the experts involved. About sales and marketing, for example, but also regarding the question of which market truly deserves priority. In addition, the network is valuable, Bas indicates. “For a small innovative company, it is difficult to get directly to the right people at large organisations and (semi-)public bodies. ROM InWest can open doors that are difficult for Drystack to access on its own.”

Ready for the next step

Meanwhile, two major brick manufacturers have joined on board who will themselves invest in machinery to process bricks at their own locations. This prevents unnecessary transport and enables further scaling up without Drystack having to build a large production facility itself. In addition to circular construction, Drystack also solves a staffing problem. People can be trained as stackers within a few days. Construction companies therefore do not have to turn down large contracts due to a shortage of staff. To achieve this, Drystack collaborates with training organisation Bouwmensen, among others. Bas talks about an employee who first walked around the construction site with a broom, was trained for three days and then stacked a facade together with two colleagues. “That lad was as proud as punch. That is fantastic, of course.” It illustrates where Drystack wants to go: combining circular construction with less waste, less dependence on scarce craftsmanship and a scalable business.

Dennis doesn't have to think twice about what he has learned after nearly ten years of pioneering. “There's a solution for everything. Even if you don't see it at that moment, you will see it after half a year, or after a year. In the Marines I learned to set goals and achieve them with the knowledge you have yourself. That's also how I started Drystack, as a loner. Whereas there are plenty of sparring partners you can make use of when you start a business. Make use of them, for the right focus and the right network that helps to open the next door.”

Birgitta Kramer
Birgitta Kramer
Business Developer Circular Economy

Circular transition

Innovating in circularity

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