Abstract: A method for attaching thermoplastic strips to a roof of thermoplastic roof membranes includes the steps of providing strips of thermoplastic material, the strips each comprising an upstanding central portion extending lengthwise thereof, and opposed flange portions extending widthwise from the central portion, positioning the strip proximate a selected position on the roof for attachment to the roof, providing a self-propelled apparatus having means for affixing the strip onto the roof, and directing the apparatus along a line delineating the selected position on the roof to guide the strip into position adjacent the line and to affix the strip onto the roof membrane alongside the line.

Abstract: A method for attaching thermoplastic strips to a roof of thermoplastic roof membranes includes the steps of providing strips of thermoplastic material, the strips each comprising an upstanding central portion extending lengthwise thereof, and opposed flange portions extending widthwise from the central portion, positioning the strip proximate a selected position on the roof for attachment to the roof, providing a self-propelled apparatus having means for affixing the strip onto the roof, and directing the apparatus along a line delineating the selected position on the roof to guide the strip into position adjacent the line and to affix the strip onto the roof membrane alongside the line.

Abstract: An articulating plate assembly for retaining sheets of roofing material on a roof surface includes a plate defining (i) a generally hemispherically-shaped recess in a central portion of a first surface thereof, and (ii) an aperture disposed in the recess and extending through the plate, and a fastener having (i) a shank portion configured to pass through the aperture and to engage the roof surface, and (ii) a head portion having an underside of a curved configuration generally complementary to the recess.