Roofing Sheets Compared: Metal vs UPVC vs Polycarbonate

Whether you're covering a shed, a garage, a parking space, a terrace or a factory, the roofing sheet you choose decides how cool, dry and long-lasting that space will be. In Goa, two things matter most: surviving the monsoon and resisting salt air. Here's a plain-English look at the four common sheet types and where each one wins.

The four main roofing sheets

1. Metal sheets (GI / colour-coated)

The most common and economical choice. Galvanised iron (GI) and colour-coated steel sheets are strong, cover large areas quickly, and last for years. The catch: plain metal can heat up and, if cheap or damaged, can rust near the coast. Solution — pick a good colour-coated sheet with a protective finish, and add insulation underneath if the space gets hot.

2. UPVC sheets

UPVC roofing is excellent for Goa. It never rusts, handles salt air beautifully, stays cooler than bare metal, and is much quieter during heavy rain — a real comfort in monsoon. Great for homes, verandas, small sheds and anywhere comfort matters.

3. Polycarbonate sheets

These are see-through (or tinted) sheets that let natural light in while blocking rain and UV. Perfect for car parking, patios, skylights, balconies and walkways where you want brightness without sun and rain. Strong and lightweight.

4. PUF insulated panels

Two metal sheets with insulating foam sandwiched inside. They keep interiors noticeably cooler and cut down rain noise — ideal for factories, warehouses, cold storage and any space where temperature control matters. The most premium option.

Side-by-side comparison

What should you use where?

• Home terrace, veranda or small shed near the coast: UPVC — no rust, quiet rain, cooler.
• Large shed, garage or industrial roof on a budget: colour-coated metal sheets.
• Car parking, patio or balcony cover: polycarbonate for natural light.
• Factory, godown or any hot interior: PUF insulated panels.

In Goa, the two questions that decide your roof are simple: how hard will the monsoon hit it, and how close is it to the sea? Answer those and the right sheet becomes obvious.

Don't forget the structure underneath

A roof is only as good as the steel framework holding it up. For sheds and canopies, a properly fabricated and rust-proofed steel frame is what keeps the whole roof safe through years of monsoon wind. That framework — plus correct slope for drainage and sealed fixings — is exactly what we handle as part of our roofing & sheds work.

A quick word on price

Sheets are sold per sheet (often by length, e.g. 12 feet) or per square foot. As a rough order from cheapest to costliest: plain metal → colour-coated metal / UPVC → polycarbonate → PUF panels. Because prices move with thickness, brand and area, the only accurate number is a quote for your exact roof.