Blog · 10.08.2026

Pergola Heat Insulation: Truly Cool Down Your Shade

Why does it get so hot under a pergola in summer? Lower the surface temperature from 72°C to 46°C with ISO THERMAL pergola heat insulation.

Pergola Heat Insulation: Truly Cool Down Your Shade

If you feel the heat under your pergola in summer even though you are in the shade, you are not alone. Pergola surfaces, especially metal and wooden ones, heat up quickly under the sun and radiate that heat directly onto the people sitting below. They provide shade, but not coolness.

Why Does a Pergola Heat Up?

Metal and aluminum pergolas absorb sunlight and push their surface temperature above 70 degrees. Wooden pergolas not only heat up but also crack and fade under UV rays. In our field thermal camera measurements, we observed a pergola surface reaching 72.1°C.

The Solution with ISO THERMAL

Water-based, brush-applied ISO THERMAL coating reflects sunlight and significantly lowers the pergola surface temperature. In the same field test, the surface temperature dropped to 45.8°C after application, so your shade actually becomes cool.

  • Heat drop: From 72.1°C to 45.8°C in a field measurement.
  • Waterproof: A flexible coating that does not leak in the rain.
  • Easy application: Like painting, no primer on most surfaces.

Meet ISO THERMAL to make the space under your pergola truly livable. Safe insulation, safe future.


Let’s plan the right heat insulation for your structure

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