It's a standard false impression that glass wool or rock mineral wool fibres are destroyed by water. Nevertheless, water takes in excess of the cells involving the glass wool, changing the insulating pockets of air and therefore protecting against the material from doing its insulation necessities. "[61] John DeFore on https://glass-wool-boards04815.blogdon.net/glass-wool-air-conditioning-board-things-to-know-before-you-buy-52294130