Method and apparatus for attaching a supported addition to a finished building

A spacer for use within an enlarged hole drilled through an exterior side portion of an exterior wall in an existing building, the existing building having a structural frame, wherein the enlarged hole exposes the existing building's structural frame to thereby provide a point of attachment for a supporting structural member of an addition screwed to structural frame of the existing building, the spacer comprising:

• a) a wall insert weather sealing cup portion having a peripheral sidewall, and a bottom sidewall which seats on the existing building's structural frame, said bottom sidewall having a central axial bolt opening therethrough;
• and,
• b) a structurally reinforced bend prevention bolt spacing sleeve portion mated to fit within the wall insert weather sealing cup portion, said structurally reinforced bend prevention bolt spacing sleeve portion also having a central axial bolt opening therethrough;
• wherein the exterior side portion of the exterior wall in the existing building is sheathed and the wall insert sealing cup portion attaches directly to the structural frame through the enlarged hole, and the enlarged hole has a diameter generally equal to an exterior diameter of the wall insert weather sealing cup portion;
• such that when the exterior side portion of the exterior wall is finished, the wall insert weather sealing cup portion can be sealed in an exterior wall finish thereby preventing moisture from penetrating through the exterior wall at the enlarged hole;
• and
• wherein the addition is spaced from the exterior wall and is screwed to the existing building's structural frame with a screw, wherein a bending moment on the screw from the weight of the addition can be sustained by the structurally reinforced bend prevention bolt spacing sleeve portion and water running off the addition onto the exterior wall will be prevented from penetrating therein by the wall insert weather sealing cup portion surrounding the structurally reinforced bend prevention bolt spacing sleeve portion and the screw.