New Green Savings Light—we handle grants and Renovation Passes throughout the Czech Republic. We install blown-in insulation throughout the Czech Republic. We insulate flat roofs and facades in the local area and within a 100-km radius. NZÚ covers up to 100% of the cost of insulating roofs and ceilings. Roof coatings. We repair insulation damaged by martens without dismantling drywall or the roof.