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How to best protect the spray insulation?

Polyurethane foam requires UV protection (Ultra Violet), which causes the foam to degrade and lose its thermal insulation properties. Its mechanical strength is also reduced. Foams applied from the inside for roofs, walls, ceilings or floors do not require a direct coating to protect them from atmospheric influences. In the case when foam is sprayed outdoors, it should be protected with appropriate and dedicated coatings to protect it against moisture and UV radiation.