Roof insulation applicator (10) for applying sheet material to the roof of
an industrial building includes a carriage (12) for mounting on adjacent
purlins (14 and 15) of a partially completed roof. Support roller (40) is
applied by the carriage to the upper surfaces of the purlins (14 and 15)
and the carriage is tiltable about the support roller (40). The center of
gravity of the carriage (12) is applied rearwardly of the support roller
(40). Purlin engager (60) is mounted to the front of the carriage and
engages under the upper laterally extending flange (22) of the purlin (14)
and limits the downward pivoting of the rear end of the carriage applying
a lever arm effect by the weight of the rear portion of the structure to
the support roller (40). This firmly holds the sheet material in its
stretched configuration extending from the roof panel (16) out to the
support roller (40), reducing the tendency of the sheet material to sag in
between the adjacent purlins. Magnets (95 and 96) are mounted to the rear
of the carriage to hold the carriage against the purlins when the purlin
engagers are inoperative.
