Spray foam insulation or mineral wool?

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Polyurethane foam vs Mineral wool

Spray foam insulation or mineral wool?

Mineral wool insulation is less efficient than insulating foams, particularly at extremely low temperatures. The main reason consists in air tightness. Mineral wool regardless of the installation quality, it does not form air barrier and enables free air passage through its joints. The interior air and outside air, each with different temperature, thus meet in the vicinity of the insulation inside the building structure. Vapor starts to condense, which results in moisture formation within the insulation that you can hardly remove. Wet mineral wool loses its insulating properties.

When compared to mineral wool insulation, the undisputable benefit of the spray foam insulation consists in its joint-free technology which forms consistent thermal insulation layer.

 

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