Flat roofs have been a daunting task for contractors and homeowners alike since they were invented. They are hard to waterproof, hard to maintain, and hard to insulate. For today's purposes, we will stick with the insulation issue.
FAKRO FLAT ROOF WINDOWS Flat Roof Windows illuminate the interior of buildings with natural light; allow airing of the room and provide excellent thermal insulation properties. The frame of the flat roof window is constructed of multi-chamber PVC