India’s Roofing Upgrade: How UPVC Roof Sheets and Transparent PC Sheets Work Together to Save Lighting Costs

In recent years, more commercial and industrial buildings in India have begun replacing traditional roofing with UPVC roof sheets and transparent polycarbonate (PC) sheets. This combination is becoming a popular roofing solution because it improves indoor lighting, reduces electricity consumption, and delivers better long-term performance.

This article explains in simple words why using UPVC roof sheets together with transparent PC roof sheets is a smart choice, how they are installed, and how they help save lighting resources.

UPVC roof sheets are widely used in factories, warehouses, farms, railway stations, and residential areas in India. The advantages include:

• Great heat insulation – keeps buildings cooler under India’s strong sunlight

• Corrosion resistance – especially useful in coastal regions like Chennai, Mumbai, and Goa

• Noise reduction – reduces rain and wind noise

• Low maintenance

• Long-term color stability with ASA surface protection

Certified tests (such as ISO9001 quality management and SGS material testing) also prove their stable performance in outdoor environments.

Because of these advantages, UPVC sheets are often selected as the main roofing material.

Although UPVC provides good protection, it is not transparent. Many Indian factories operate during daytime but still depend on artificial lighting because the inside of the building is dark.

Transparent PC sheets solve this problem:

• Light transmittance up to 85%–90%

• Impact-resistant and safe (up to 200–250 times stronger than glass)

• UV-protected surface reduces yellowing

• Suitable for skylights and daylight panels

International certifications such as CE & SGS test reports also confirm the durability and safety of PC sheets.

Using PC sheets strategically placed on the roof reduces the need for indoor lighting during the day.

Many projects in India now use UPVC roof sheets as the main roof and insert transparent PC sheets as daylight panels. The two materials can be overlapped or interlocked during installation.

How the installation works:

• UPVC sheets cover most of the roof surface.

• PC sheets are installed at intervals, usually every 3–5 meters.

• The overlap area is sealed with waterproof accessories.

• Special screws and sealing washers prevent leakage during heavy rains.

• The structure ensures stability even during monsoon seasons.

Why this structure is effective:

• Keeps the building cool

• Provides natural daylight

• Reduces electricity consumption

• Prevents water leakage

• Ensures long-term durability

Using both UPVC and transparent PC sheets helps reduce energy costs in four ways:

① Natural Lighting All Day

PC sheets allow sunlight to enter the building, reducing the need for lamps between 9 AM and 4 PM.

② Lower Electricity Bills

If a factory normally uses 50–100 lights, switching to natural daylight can save 30%–60% of lighting energy costs.

③ Improved Working Environment

Workers can see more clearly with natural light, which improves safety and productivity.

④ Eco-Friendly Solution

Less electricity consumption means fewer carbon emissions—this is why more Indian green-building projects recommend PC daylight panels.

This roofing combination is widely used in:

• Industrial workshops

• Warehouses

• Poultry farms

• Carports

• Greenhouses

• Metro stations

• Logistic centers

• Shopping center corridors

• Household patio roofs

It is also suitable for regions with strong sunlight, such as Maharashtra, Gujarat, Karnataka, Tamil Nadu, Telangana, and Rajasthan.

Using UPVC roof sheets together with transparent PC sheets is a smart, energy-saving roofing solution for the Indian market. It provides:

• Better natural lighting

• Lower electricity bills

• Strong heat insulation

• Durable, weather-resistant performance

• Long-term stability supported by international certifications

This simple combination can significantly improve building efficiency while reducing overall operational costs.