In Harderwijk, commissioned by D&N Dakwerken, we completely renovated a flat roof with a new insulation structure and high-quality bitumen roofing. The existing roof structure was in need of renewal, requiring improvements not only to watertightness but also to the roof's insulation value. Therefore, a complete roof structure with tapered insulation was chosen, followed by durable 2-layer bitumen roofing.
The photos clearly show how the project was built up step by step. First, the new insulation layer was installed, after which the first layer of bitumen was carefully applied. Subsequently, the second layer of bitumen was applied to create a strong, watertight, and durable roof structure capable of withstanding various weather conditions.
Slanted insulation for optimal water drainage
Tapered insulation was used in this project. This insulation ensures that rainwater is directed to the drainage points in a controlled manner, preventing water from accumulating on the roof for extended periods. This reduces the load on the roof covering and contributes to a longer lifespan of the entire roof.
In addition to improved water drainage, the new insulation also results in a clear improvement in living comfort. Heat loss is limited, ensuring the indoor climate remains more stable and the home becomes more energy-efficient. The combination of insulation and new roofing thus constitutes a sustainable long-term investment.
Sleek finish with zinc roof edges
After the installation of the bitumen roofing, the roof was finished with a neat zinc edge trim. The photos clearly show that the roof edges connect tightly to the new roof structure, creating a polished appearance. The connections along the facade and other details have also been executed with precision, ensuring that the entire roof forms a single watertight unit.
By paying close attention to both the large roof surfaces and the finishing of the details, a roof structure is created that is not only technically reliable but also looks well-maintained. The combination of tapered insulation, a 2-layer bitumen system, and a durable zinc finish ensures a low-maintenance solution with a long lifespan.
With this roof renovation in Harderwijk, the home once again features an excellently insulated and completely watertight flat roof. Thanks to the new roof structure, the high-quality bitumen roofing, and the sleek finish, the roof is prepared for years of reliable use. Smienk Dakwerken is your partner as a roofer in Harderwijk.





