Roof Underlay

KalsiCeiling is a fibre cement panels suitable for roof underlay applications.

Roof underlay as a separation between roof and ceiling, serves as an additional protective layer against penetration of heat, water or other external exposure from damaging the sections within a building.

In another scenario, roof underlay also protects the roof from any corrosive substances which result from any chemical-inducing or hazardous operation in the building such as furnace area etc.

Also, it functions well to meet insulation performance as per acoustic or thermal requirement of the installed roof/ ceiling (horizontal) system.

With proper design consideration, installing a roof underlay would improve the overall durability and maintenance cost of the building. Please consult our technical support department for more details.

Further information


  • Resistant to the attack of termites, insects and most other vermin
  • Moist, mould and water resistant
  • Impact resistant
  • Dimensionally stable
  • Easy to repair and maintain
  • Flexible
  • Chemically inert
  • Affordable solution as a protective layer


  • Roof underlay & ceiling enclosure


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