The insulation comes in two main types: warm roof insulation and cold roof insulation. Warm roof insulation is installed above the roof deck to keep the structural elements warm and minimise condensation risk. On the other hand, cold roof insulation is positioned below the roof deck, primarily serving as a thermal barrier and protecting against heat loss.
The benefits of insulating flat roofs are manifold. First, it enhances thermal performance by reducing heat transfer between indoor and outdoor environments. Proper insulation also helps prevent condensation buildup, mitigating moisture-related issues like mould and mildew. Additionally, insulation materials serve as sound barriers, reducing noise transmission from external sources.
When it comes to insulation materials, there are several options available. Polyurethane foam provides excellent thermal insulation and can be applied seamlessly to irregular surfaces. Extruded polystyrene (XPS) boards offer high compressive strength and moisture resistance, making them suitable for flat roof applications. Mineral wool insulation, known for its fire resistance and acoustic properties, is ideal for enhancing indoor comfort in flat roof structures.