Block Insulation Calculator Calculate the approximate cost to insulate a new block wall. Length of House ft Cost per Block Width of House ft 8" .25 Height of Wall ft 10" .35 12" .55 Total Area of Wall sf Total Concrete Insulation Blocks Estimated Insulation Block Cost 8″ wall Cost 10″ wall Cost 12″ wall Cost $ $ $ Insulated R-Value Plain Concrete Block 1.11 1.2 1.28 With Concrete Block Insulation 13.5 19 23.6