Kolkata's summer heat and monsoon rain both attack a flat roof from opposite directions. Royal India's Cool & Seal roof treatment combines waterproof sealing with a reflective coating, so the same terrace that stops leaking also runs cooler during peak summer.
A flat roof or terrace in Kolkata takes the worst of both seasons — standing water and slab cracks during the monsoon, and direct heat gain that pushes up indoor temperatures in summer. Treating only one of these problems means dealing with the other again within a year.
Our Cool & Seal roof treatment is a two-part system: a certified Dr. Fixit waterproofing membrane to seal cracks and stop water ingress, followed by a reflective coating that reduces heat absorption into the slab below. The result is a terrace that stays dry through the monsoon and noticeably cooler through the summer months, which also eases the load on air conditioning for the floor underneath.
As with our other waterproofing work, we start by inspecting the slab condition and existing drainage before recommending the treatment — a roof with poor water flow needs slope correction addressed alongside the coating, not just a fresh layer over an existing drainage problem.
We check slab condition, cracks and existing drainage flow before quoting.
Cracks are sealed and the surface cleaned and prepared for the membrane.
A certified Dr. Fixit system is applied to seal the roof against leaks.
A reflective top coat is applied to reduce heat gain into the slab.
Advanced roof coating system for temperature control and superior protection against the elements.
Climate-resistant coatings applied to protect against rain, sun and humidity.
See Weatherproofing Solutions →
Certified waterproofing systems for long-term terrace protection.
See Damp Proofing & Waterproofing Contractor →Had severe dampness issue for years. Royal India's team traced the source to the terrace and it's been dry ever since.
Yes — the reflective top coat reduces heat absorbed into the slab, which noticeably lowers heat gain in the floor directly beneath the terrace.
Yes, the waterproofing membrane is applied specifically to seal cracks and entry points causing leaks before the cool coat is applied.
Timeline depends on roof area and slab condition; you'll get a specific schedule with your free quote.
Yes, we apply this system on residential terraces and commercial flat roofs alike.
Call, WhatsApp, or send an enquiry — our team responds within 24 hours.
