The following are results of the "Water Penetration Study to Determine the Effectiveness of the BlockNet® System by Mortar Net USA Ltd. used in Concrete Masonry Unit Wall Construction." TEST METHODS ASTM E 514, "Test Method for Water Penetration and Leakage Through Masonry" ASTM C 140, "Test Methods of Sampling and Testing Concrete Masonry Units" TEST PROTOCOL ASTM C 270, "Specification for Mortar for Unit Masonry" TEST DATE: June 5, 2003 TEST PERFORMED BY:ROBERT L. NELSON & ASSOCIATES, INC. CONSTRUCTION MATERIALS LABORATORY1220 REMINGTON ROAD SCHAUMBURG, ILLINOIS 60173 847/882-1146 TEST RESULTS Test Results                             Mortar Net Test Time                                 4 hours Water Flow                               0.68 gal/mm Air Pressure                             2 inch water column Sample Description: BlockNet® System by Mortar Net USA, Ltd. Front Back Test Results     Mortar Net Time of appearance of dampness on back of wall (min)  80 Time of appearance of visible water on back of wall (min) n/a Area of dampness of wall at the end of 4 hrs (%)  10 Total water collected in 4 hour period (liters)     5.750