
For IGS Westlede, it was essential that the crematorium remain operational throughout the entire roof renovation. For Ann Van de Velde, Business Manager at Tectum Constructors Melle, and her teams, this was also the biggest challenge: thoroughly renovating a complex roof structure without disrupting the client’s daily operations.
“The most important thing for our client was that they could remain operational during the work,” says Ann Van de Velde. “That’s why we opted for a phased approach, whereby everything that was opened up during the day had to be closed up and made watertight again by the end of the day.”
During the construction work, auditoriums equipped with sensitive technical systems—such as lighting, sound, live streaming, and music systems—had to remain fully operational. Thanks to careful planning and a phased approach, the work was carried out safely and efficiently with minimal disruption to visitors and staff.

The distinctive parabolic roof shape of the main building made the project particularly challenging from a technical standpoint, especially with regard to the installation of solar panels.
“Anyone familiar with the roof of the main building knows that its iconic parabolic shape isn’t ideal for solar panels.”
In addition, a limited additional roof load of no more than 10 kg/m² had to be taken into account. Together with all the partners involved, we sought a solution that was both technically effective and sustainable.

For the IGS Westlede Crematorium in Lochristi, Tectum Group carried out Tectum Group major renovation of a complex roof structure. The project combined sustainability, waterproofing, and energy efficiency within a technically challenging environment that had to remain operational throughout the entire construction process.
The renovation was part of IGS Westlede’s sustainable investment strategy, which places a strong emphasis on electrification and solar energy. Due to the building’s unique architecture and the limited additional roof load, the project required a well-thought-out and technically advanced solution.
For IGS Westlede, it was essential that the crematorium remain operational throughout the entire roof renovation. For Ann Van de Velde, Business Manager at Tectum Constructors Melle, and her teams, this was also the biggest challenge: thoroughly renovating a complex roof structure without disrupting the client’s daily operations.
“The most important thing for our client was that they could remain operational during the work,” says Ann Van de Velde. “That’s why we opted for a phased approach, whereby everything that was opened up during the day had to be closed up and made watertight again by the end of the day.”
During the construction work, auditoriums equipped with sensitive technical systems—such as lighting, sound, live streaming, and music systems—had to remain fully operational. Thanks to careful planning and a phased approach, the work was carried out safely and efficiently with minimal disruption to visitors and staff.

The distinctive parabolic roof shape of the main building made the project particularly challenging from a technical standpoint, especially with regard to the installation of solar panels.
“Anyone familiar with the roof of the main building knows that its iconic parabolic shape isn’t ideal for solar panels.”
In addition, a limited additional roof load of no more than 10 kg/m² had to be taken into account. Together with all the partners involved, we sought a solution that was both technically effective and sustainable.

The existing roof structure was completely removed down to the steel deck. Tectum Group then installed Tectum Group new, high-performance roof structure consisting of:
The selected 2.5 mm-thick EPDM roofing membranes offer high puncture resistance and maximum protection against damage and leaks. The new roof system was designed specifically to accommodate the future load of the solar roof and the building’s long service life.
In addition, extensive technical design work was carried out, including analyses of roof details, parapets, and penetrations, supplemented by wind load calculations and intensive on-site supervision during construction.
Thanks to a combination of high-quality materials, technical expertise, and a well-thought-out implementation strategy, Tectum Group has created Tectum Group sustainable energy roof designed for long-term use.
With this project, Tectum Group demonstrates its expertise in complex renovation projects where continuity, safety, quality, and sustainability are paramount.

With thanks to devijfdegevel for the audiovisual material.

For the IGS Westlede Crematorium in Lochristi, Tectum Group carried out Tectum Group major renovation of a complex roof structure. The project combined sustainability, waterproofing, and energy efficiency within a technically challenging environment that had to remain operational throughout the entire construction process.
The renovation was part of IGS Westlede’s sustainable investment strategy, which places a strong emphasis on electrification and solar energy. Due to the building’s unique architecture and the limited additional roof load, the project required a well-thought-out and technically advanced solution.
