Insta-foam Products, Inc.

Donald F Partyka

Ross Wilson

Robert Eaton

Stephen A Gendron

A multiple adhesive bead applicator has a handle member and a cross member. A network of adhesive distribution tubes is attached to the application and extends from the handle member to multiple distribution points in a preselected spacing on the cross member. Such an application is useful in a method for applying a cover member, such as an elastomeric membrane or insulation board, to a roofing substrate by first positioning the membrane adjacent a work area, then dispensing multiple beads of an adhesive onto the substrate in a preselected spacing and in a single pass and contacting the adhesive beads with the cover member.

Multiple adhesive foam bead applicator

Method of use of multiple adhesive foam bead applicator

A method for forming a temporary seal between a roof substrate and a flexible membrane is disclosed. At the end of a work day, the roofing membrane is folded upon itself along a foldline to define a leading edge of the membrane. An expandable polyurethane foam is injected into the interface formed between the membrane leading edge and the roof substrate. The foam is allowed to expand into a wedge shape and adhere to the membrane leading edge and roof substrate. After it cures, the foam wedge is substantially impervious to water and moisture migration. When work is resumed, the membrane is peeled away from the formed wedge, preferably at an angle, and the existing roof substrate is removed.

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Heath, OH, United States of America

Donald F Partyka