We have a bungalow 13.5 by 10 meters, hipped roof with a slope of 30 degrees along the length and 45 degrees across the sides. The roof is not insulated yet. The area of the roof is about 160 square meters. The ceiling of the floor is insulated. The attic is not used for living, but simply as a place for storage. We have made it accessible by stairs, not through a hatch in the floor, because the stairs are more convenient to reach. The patio door insulates the living area from the cold floor. Unfortunately, such a floor is very cold in the winter. Since we have money, the carpenter offered to insulate the cold floor.
He wants 8500,- gross for 200 mm of pressed felt between the rafters, vapor barrier and tongue and groove board cladding without puttying or painting.
Is that normal? Or is it too expensive? Or even cheap?