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A roof drain arrangement and method for sealing a space between an existing drain opening, the roof drain arrangement, and a new roof membrane, is disclosed. The arrangement and method provide for sealing of an area between the roof drain arrangement and the roof structure. Sealing is provided by ad

A roof drain arrangement and method for sealing a space between an existing drain opening, the roof drain arrangement, and a new roof membrane, is disclosed. The arrangement and method provide for sealing of an area between the roof drain arrangement and the roof structure. Sealing is provided by adhesive material disposed on a lower surface of an upper flange portion of the insert portion, or by adhesive disposed on an upper surface of a base plate, or by a roofing membrane located between the lower surface of the upper flange portion and the base plate, or by a combination thereof.

대표청구항 ▼

[ I claim:] [1.] A roof drain arrangement mounted on an existing drain opening on a roof, said arrangement comprising:a base plate having a center opening approximately corresponding in size to a cross-section of said existing drain opening, said base plate being positioned directly on said roof so

[ I claim:] [1.] A roof drain arrangement mounted on an existing drain opening on a roof, said arrangement comprising:a base plate having a center opening approximately corresponding in size to a cross-section of said existing drain opening, said base plate being positioned directly on said roof so that said center opening of said base plate is in substantial alignment with said cross-section of said existing drain opening, said base plate having an upper surface;an insert portion approximately corresponding in cross-sectional size to said cross-section of said existing drain opening, said insert portion being inserted into said existing drain opening and having a flange portion adjacent to and surrounding an upper end of said insert portion, said flange portion having a lower surface which rests on said base plate when said insert portion is inserted into said existing drain opening; andsealing means disposed between said lower surface of said flange portion and said upper surface of said base plate for sealing an area therebetween.