Importance

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Abstract

A hand trowel device for particular use in roofing and like constructions is specially provided with an integral heating means. The heating means is adapted to continuously maintain the trowel blade at a temperature sufficient to plasticize or render flowable, preferably under applied pressure, the roofing compound or roofing cement employed. The roofing compound to be plasticized may be pre-impregnated in or otherwise integrated with the roofing sheet (or 'felt') material being used in the roof covering or it may be separately provided for the purpose of independently sealing and waterproofing the roof covering material, particularly lapped edge or flashed edge portions of sheet roof covering material. Also, since it is a hand trowel, the trowel device is provided with a convenient hand gripping portion to facilitate lifting, carrying and manipulating the trowel during use and, in addition, an attached safety stand for supporting the hot or heated trowel in a rest position elevated above the roof surface. In use, the heated or hot trowel device is continuously maintained at a predetermined temperature to cause, on contact and under applied pressure, plastic flow of the roofing cement or roofing compound employed. The edges or edge portions of the trowel permit directing or redirecting the flow of the roofing compound, as desired, and the flat bottom surface of the trowel between its edges permits applying heat over relatively broad area to cause, in certain circumstances, softening of the compound to occur. By applying and appropriately manipulating the hot trowel from zone to zone on the sheet roofing material to be sealed, there is effected a desired smooth, finished, air-impermeable and watertight seal.

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First Claim