VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY
Loft insulation. The loft or attic space in a house is frequently left unheated, and so insulation is needed at this point to reduce heat loss from the heated area below. The insulation here is layers of glass mineral wool on and around the wooden roof joists and rafters. Insulation materials range from foam to wood to cork to various fibres, including mineral wool and natural wools and cottons.
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