Washer and combination washer and fastener system for building construction

A washer and mating adapter for a fastener gun system, said system comprising:

• an adapter for attaching to a fastener gun, said adapter including an adapter aperture through which fasteners may be discharged by the fastener gun;
• and
• a plurality of washers separate from and not retained by said adapter or the fastener gun, each said washer comprising an outer side having a solid upper surface defined by an upper wall, an underside opposite said outer side, and a perimeter, each said washer further including a washer aperture extending from said outer side to said underside, and an engagement portion configured to be at least one of a projection member or a receptacle in said outer side located inward of said perimeter, wherein said projection member extends upward from said upper surface and said receptacle extends inward from said upper surface, wherein said upper surface of said outer side of said washers comprises a conical portion from said perimeter to said engagement portion, and with each said washer further including a prong member projecting from said underside,
• said adapter configured for mating engagement with said engagement portion of each said washer for locating the adapter aperture relative to said corresponding washer aperture.

A method of affixing a washer to a building wall, said method comprising:

• providing a washer separate from a fastener gun, said washer comprising an outer side having a solid upper surface defined by an upper wall, an underside opposite said outer side, a perimeter, an outer sealing surface adjacent to and disposed about said perimeter, a washer aperture extending from said outer side to said underside, an engagement portion configured to be at least one of a projection member or a receptacle in said outer side located inward of said perimeter, wherein said projection member extends upward from said upper surface and said receptacle extends inward from said upper surface, and further comprising a prong member projecting from said underside and disposed radially inward from said outer sealing surface,
• providing an adapter affixed to a fastener gun, said adapter including an adapter and an adapter surface for mating with said engagement portion of said washer;
• said method further comprising sequentially:
• (1) pressing said prong of said washer into a soft building material of the building wall whereby said washer is self-retained on the soft building material;
• (2) engaging said adapter surface of said adapter with said engagement portion of said washer after pressing said prong of said washer into the soft building material, wherein when said adapter surface of said adapter is engaged with said engagement portion said washer aperture and said adapter aperture are axially aligned;
• and
• (3) driving a fastener from the fastener gun into the washer aperture with the fastener fixedly holding said washer to the building wall.