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The summary of tests on Wall 2 is as follows: Test Closure Caulking compound was applied to the chan- nels and angles. The plywood was then pushed, with its ends in the channels, down against the angle to form the closure. 2 Same as Test 1 except caulking was applied more heavily to the closure. 3 The channels and angles were removed from the closure. Angles were welded to fit tightly against the sides and bottom of the doorspace. The angles were attached to the brick wall and to the floor of the doorspace using an epoxy resin adhesive. Gasket material was used on the plywood closure and it was bolted to the angles. Same as Test 3. 4 Wall The wall was composed of two layers of brick separated by a water- proof barrier. Same as Test 1 except plywood with caulking was screwed to the outside ends of the wall to stop the water leaks along the water- proof barrier and ends of the wall. Same as Test 2. The seals at the out- side ends of the walls were tightened after more adhesive was applied. Test Results The closure leaked so badly that the system could not be tested. The water did not go through the wall. Water freely flowed to the barrier, along the space between the layers of brick, and out the ends of the wall. The closure still leaked. Water did not come through the walls but flowed along the barrier and between the walls so freely that the test could not be completed. The closure did not leak. Water did not penetrate the wall. Water still leaked from the outside ends of the walls. The closure and wall did not leak. How- ever, the effort re- quired to make this a successful system shows that it is not efficient for home- owners' use. For a closure not to leak at its intersection with the sides and bottom of the doorspace, rubber gasket material, some adhesive, and bolts must be used to tighten and seal its sides and bottom. The two-layer wall was 40