What are the Best Types of Roof Insulation Materials in Kenya?

What are the Best Types of Roof Insulation Materials in Kenya?

Roof insulation is a crucial component of a building’s envelope that helps regulate temperature, reduce energy consumption, and enhance comfort. It involves the installation of materials or systems to prevent heat loss in cold weather and heat gain in hot weather through the roof structure. By providing thermal resistance, roof insulation helps maintain a stable and comfortable indoor environment while lowering energy costs. It also plays a vital role in preventing moisture infiltration and extending the lifespan of the roofing system. At Seven Sunday, we manufacture roof insulation materials, it comes in various types and materials to suit different climate conditions, building designs, and budget considerations, making it an essential element in creating energy-efficient and comfortable living or working spaces.

Flat Roof Insulation

  • Description: Flat roof insulation is specifically designed for buildings with flat or low-sloped roofs. These roofs are common in commercial and industrial structures. Flat roof insulation helps regulate temperature, prevents heat loss in winter, and reduces heat gain in summer.
  • Materials: Common materials used for flat roof insulation include polyisocyanurate (polyiso), expanded polystyrene (EPS), and extruded polystyrene (XPS) foam boards. These materials offer good thermal performance and moisture resistance.
  • Application: At Seven Sunday, we also do the installation of roof insulation materials. In this case, it is typically installed above the structural deck and below the roofing membrane. It can be adhered, mechanically fastened, or ballasted depending on the specific roofing system.

Heavy-Duty Insulation Material

  • Description: Heavy-duty roof insulation materials are designed for applications where the roof may be subject to heavy loads, foot traffic, or equipment installations. They are often used in industrial or commercial settings.
  • Materials: These materials can include high-density foam boards, such as XPS, or composite insulation boards with added strength for durability.
  • Application: It is installed similarly to flat roof insulation but offers greater resistance to compression and damage, making it suitable for roofs that will be walked on or have heavy equipment placed on them.

Standard Roof Insulation Material

  • Description: Standard roof insulation materials are versatile and suitable for a wide range of roofing applications, including residential and commercial roofs with typical loads and foot traffic.
  • Materials: Common materials for standard roof insulation include fiberglass batts, mineral wool, or foam board insulation. These materials provide good thermal resistance and are cost-effective.
  • Application: It can be used in various roofing systems and is typically installed above the structural deck and beneath the roofing membrane. The choice of material and installation method depends on the specific requirements and budget.

Foil Coated Both Side and Single Side Insulation Material

  • Description: Foil-coated roof insulation materials come with a reflective foil facing on one or both sides. This reflective foil helps in reducing radiant heat transfer, making them suitable for hot climates and buildings with high solar exposure.
  • Materials: These materials often consist of foam board insulation with a foil facing on one or both sides.
  • Application: Foil-coated roof insulation is commonly used in regions with hot climates to reflect solar radiation away from the roof’s surface. It can be installed in the same manner as standard roof insulation.


Choosing the right roof insulation material depends on factors such as climate, building type, budget, and specific performance requirements. Proper insulation is crucial for energy efficiency, comfort, and protection of the building structure.

Also read: Choosing the right insulation material

Benefits of flat roof insulation material

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