C losed Cell Spray Foam insulation is a type of insulation material that is made up of completely closed cells. It has cells that are pressed together and make it impossible for moisture and air to enter a building space. It can be easy to reduce total energy costs when houses are sealed and all the tight gaps around pipes, wiring, etc are closed with the aid of foam. The Closed Cell Insulation Cost is more than that of the Open Cell variety of Spray Foam insulation. How much does closed-cell spray foam cost UK ? The costs are determined by many factors. The National Insulation Association says that one has to pay about £20 to £50 per sq. m for this kind of insulation. The closed-cell foam insulation cost UK is 20 to 50 pounds per square meter. The cost of this kind of insulation material can depend on many factors, such as: ·          Size of building or structure to be insulated ·          Type of spray foam needed - Open-Cell or Closed-Cell ·          amount of labor need