Installing solar panels on metal roofs: Significant advantages and considerations coexist

Metal roofs are an ideal choice for installing solar panels and have the following significant advantages:

✅ Durable

✅ Reflect sunlight and save energy consumption

✅ Easy to install

Durable

The service life of a metal roof can be as long as 70 years, while the expected lifespan of asphalt composite tiles is only 15 to 20 years. In addition, metal roofs have fire-resistant properties and can add a sense of security for residents in areas prone to wildfires.

Reflect sunlight and save energy consumption

Because the thermal mass of metal roofs is low, they can reflect light and heat instead of absorbing heat like asphalt shingles do. This means that in summer, metal roofs help keep the interior cool rather than intensifying the stuffiness, thereby enhancing the energy efficiency of the residence. High-quality metal roofs can save homeowners up to 40% on energy costs.

Easy to install

Compared with tiled roofs, metal roofs are thinner and less prone to cracking. Drilling operations are more convenient and they are less likely to develop cracks or damage. Cables can also be easily laid under the metal roof.

However, there are also some aspects to consider when it comes to metal roofs:

    • The cost is relatively high

    • Noise problem

    • Special fixed fixtures are required

Noise problem

The main disadvantage of a metal roof lies in the noise. This is because the wooden base plate (backing plate) between the metal panel and the indoor ceiling helps absorb some of the noise. When there is insufficient sound insulation, the sound of raindrops hitting may be more obvious.

The cost is relatively high

Given that metal roofs usually have the longest service life, their cost is also relatively higher. Not only is the cost of metal sheets themselves higher than that of asphalt shingles, but the installation of metal roofs also requires more professional skills and more labor. It is expected that the cost of a metal roof will be twice or even three times that of an asphalt tile roof.

Special fixed fixtures are required

Installing solar panels on metal roofs usually requires the use of specially designed clamps (clamping devices) to fix the brackets. This increases the complexity of installation and potential additional costs.