Monsoon-Resilient Roofing Systems
Best practices for structural trusses, underlayments, and thermal clay tile installations.
By Reuben John•Updated: 12/6/2026•1 min read
Kerala monsoons present structural challenges, including heavy rain load, high winds, and moss accumulation. KeralaDeco utilizes reinforced framing layers to protect buildings from leaks.
Framing & Structural Layout
- Steel Trusses: We construct roof trusses using structural hollow steel sections (SHS) treated with epoxy rust-preventative primer coatings.
- Roof Pitch: Slopes must range between 30 to 45 degrees to prevent standing water pools.
Moisture & Leak Protection
We recommend a three-layer shielding system:
- Concrete Decking: An RCC structural slope slab acting as the primary boundary layer.
- Waterproof Membrane: Self-adhesive SBS modified bitumen sheet applied across the entire concrete slab.
- Roofing Tiles: Baked terracotta clay tiles or cement composite shingles, secured using stainless steel clips to withstand high winds.
Thermal Insulation
We leave a 50mm air gap between the concrete deck and the clay tiles. This air cavity acts as natural insulation, reducing interior roof heat by up to 5°C.