Roof tiles or waterproofing?

When building a home, we spend a lot of time choosing floor tiles, sanitaryware, paint and interiors. But one of the largest surfaces exposed to Bikaner’s weather—the roof—is often given surprisingly little attention.

A terrace in Bikaner has to deal with intense sunshine, high summer temperatures, dust and, during the monsoon, sudden rainfall.

A good roof treatment should therefore solve two problems at once: reduce heat entering the house and protect the roof from rain and seepage.

Waterproofing coatings can help with leakage, but for many homes, a properly designed tiled terrace offers a more complete long-term solution. The key is not simply putting tiles over the roof. It is building the roof as a system.

Why the roof makes such a difference

During summer, the terrace receives direct sunlight for several hours every day. A dark roof absorbs a large amount of this solar energy. The slab heats up, and some of that heat eventually travels into the rooms below.

This is where the principle of a cool roof becomes useful. India’s Bureau of Energy Efficiency describes cool roofs as surfaces with high solar reflectance and thermal emittance; tiles are among the materials that can be used to create them.

For Bikaner’s climate, white, ivory, cream and other light-coloured roof tiles make more sense than very dark tiles when reducing solar heat gain is important.

Tiles and waterproofing do different jobs

Waterproofing is intended to stop water from reaching the structure. Tiles provide a hard, durable and cleanable surface above it.

Tiles should not be treated as a substitute for waterproofing. If a roof already has leakage, cracks or other problems, first repair those defects and provide an appropriate waterproofing system. The tiles then become the protective finished surface of the complete assembly.

Why we recommend 12 × 12 ceramic tiles

Large-format tiles look beautiful indoors, but a terrace has different requirements. The surface needs slopes—sometimes in several directions around outlets—so water can reach the drains.

The traditional 12 × 12 inch (approximately 300 × 300 mm) ceramic tile is practical for these slope changes. Individual tiles are also relatively easy to handle or replace later.

• Light coloured
• Suitable for exterior use
• Easy to clean
• Appropriately slip-resistant
• Installed for performance, not appearance alone

Small details that matter

Use tile spacers

Roof tiles should not be pushed tightly against one another. Spacers create consistent joints that can be properly grouted. Because a terrace repeatedly heats and cools, suitable grout and correctly designed movement joints help the surface accommodate normal movement and create a cleaner, more durable installation.

Use tile adhesive—not only ordinary cement slurry

Use an appropriate exterior-grade adhesive recommended for the selected tile, substrate and outdoor conditions. The installer should aim for proper coverage beneath each tile instead of leaving hollow areas. In Bikaner’s summer sun, good installation is as important as a good tile.

The most important thing is the slope

Imagine pouring a bucket of water onto the terrace. If it quickly travels towards the drain, the roof is doing its job. If puddles remain, there is a problem. Standing water continuously tests joints, cracks and waterproofing.

Before spending on tiles or waterproofing chemicals, make sure the terrace has adequate slope towards its rainwater outlets.

What if the existing roof already leaks?

Do not simply cover the problem with tiles. Investigate the cause: cracks, parapet-wall junctions, pipe penetrations, drain outlets, damaged waterproofing and areas of standing water are common trouble spots.

Find the problem → repair it → waterproof → check the slope → install tiles correctly.

You also get your terrace back

A tiled terrace becomes a proper usable floor—for plants, evening seating, children’s activities, drying clothes, or accessing tanks and solar panels. It is also easier to sweep and periodically wash, a practical advantage in Bikaner’s dusty environment.

The simple formula for a better Bikaner roof