Discover the refurbishment of the thermal and acoustic insulation of a former farmhouse in Brittany. The customer wanted to refurbish a part of its main living area without losing any space in the bedrooms located in converted attic spaces. For this reason, a thin and efficient solution was required. Combined with only 140 mm of glass wool, the customer was eligible to receive a 30% tax credit while improving his housing refurbishment by treating thermal transfers not only by conduction but also by reflection and by convection for a better comfort during summer and winter.