Research

WindowMaster (Investment case): High earnings growth set to return in 2026

In connection with the publication of WindowMaster's annual report for 2025, we have updated our investment case.

2025 was a challenging year on the topline, with revenue declining 9% to DKK 268.6m due to reduced sales to a key Nordic customer. Profitability proved resilient, however. EBITDA landed at DKK 28.0m - approximately 14% above the midpoint of the original guidance, and the gross margin improved to 48.8% from 46.9%, driven by a more favorable product mix. Adjusting for DKK 2.5m in one-off ransomware costs, the underlying EBITDA margin was approximately 11.4%. Operational cash flow remained strong at DKK 28.5m, and NIBD/EBITDA of 1.7x is well within the company's target.

For 2026, WindowMaster guides for revenue of DKK 290-310m and EBITDA of DKK 45-55m, implying a near doubling of earnings. The guidance is supported by improving order intake in H2 2025, positive momentum into early 2026, and the high operational gearing demonstrated in recent years. Non-recurring ransomware costs are not expected to recur.

Our investment case covers the key investment reasons, risks, and valuation perspectives.

The key investment reasons center on the ambitious 2026 guidance underpinned by order book momentum and structural tailwinds from EU green building regulation, high operational gearing enabling significant earnings leverage on moderate revenue growth, strong cash generation with approximately 15% FCF yield, and rising distribution potential.

The key risks include that high operational gearing amplifies downside on revenue misses, uncertain timing of market recovery, dependence on continued political commitment to green building regulation, and general exposure to building activity cycles.

From a valuation perspective, WindowMaster trades at 3.8x EV/EBITDA (2026E midpoint) versus an all-peer median of 7.5x, and 0.6x EV/Sales versus 1.1x. The EBITDA CAGR of 37.4% (2023-2026E) significantly exceeds the peer median of 4.6%, making the current discount difficult to justify on growth alone. The peer group is limited, as there are no listed pure-play peers. A strategy update for 2027-2030 expected in H2 2026 could serve as a re-rating catalyst, and with approximately 15% FCF yield and demonstrated willingness to pay dividends, the shareholder return profile is strengthening.

For more insights into the results and the outlook, you can watch the management presentation of the FY 2025 results and 2026 outlook here: https://www.inderes.dk/videos/windowmaster-presentation-of-full-year-2025-results

Disclaimer: HC Andersen Capital receives payment from WindowMaster for a Digital IR subscription agreement. /Victor Skriver, 08:30, 31/03-2026

WWindowMaster offers advanced ventilation strategies, enabling the construction industry to significantly reduce its carbon footprint. Driven by the purpose ‘To create a better world where every person has fresh air indoors and a safe built environment’, the company develops, manufactures, and distributes facade and roof automation solutions for hybrid ventilation, natural ventilation, and smoke ventilation systems. Over the past four years (2020–2024), WindowMaster has delivered profitable growth with a 12% revenue CAGR, while improving both EBITDA and cash flow. The company’s performance has shown greater resilience than the broader building materials sector, underpinned by its exposure to the more stable renovation segment, the highly regulated smoke control market, and growing investments in the green transition. A disciplined capital allocation strategy has created substantial value through investments in innovation, own production capacity, and the global sales organisation. These initiatives have cemented WindowMaster’s strong market position across core markets in Europe and North America. With a robust platform for both organic and inorganic growth, WindowMaster is well positioned to create long-term shareholder value. In 2025, the company paid its first dividend since the IPO, reflecting its healthy financial foundation and commitment to shareholder value.