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Spraying foam: Using a specialized device, so that the surface is completely covered.

Applying a protective layer: Such as an acrylic or polyurethane layer to protect the foam from ultraviolet rays and weathering.

Sixth: Comparison between foam insulation and other types of insulation
Insulation type: Thermal insulation efficiency, water resistance, lifetime, weight
Foam: Excellent, Excellent, Long, Light
Rock wool: Good, Weak, Medium, Heavy
Cement insulation: Average, Excellent, Medium, Heavy
Polystyrene (blue foam): Good, Medium