One Word: efficiency
Summary: Suction cups form a secure, temporary attachment to insulated metal panels that do not damage or bend them like slings or bolts. They also attach to the face of the panel, leaving the edges free to be snapped into place. This saves installers the time spent repairing bends or refilling drill holes, and also reduces crew size.
The benefits of using lifting equipment to handle insulated metal panels (IMPs) are abundant, and IMP installers who have employed lifters can point to a range of reasons why they use these machines.
Using a lifter allows an installation crew to access the edges and opposite sides of the panel. More importantly, lifter use eliminates the need to make attachment modifications to the material, such as clamping or drilling holes. The negative result could be delamination or other panel damage, not to mention the possibility of an unsightly finish if the drill hole locations weren’t properly determined.
Mostly, suction cup lifters save time and money, enhance personal safety and minimize the risk of damage to materials. For example, removing individual panels from shipped bundles without a lifter limits a crew’s options. Manually, to hoist a bulky, heavy panel even slightly for the purposes of attaching slings or placing onto a forklift requires extra personnel and increases the chances of injury or panel damage.
What follows is how using a lifter specifically impacts a couple of IMP-handling tasks.
Installing Roof Panels
Employing lifters diminishes risks and quickens completion times for a crew installing either standing seam panels or high-rib panels.
Manufacturers offer a range of lifter models and components engineered for specific jobs. For example, longer roof panels are handled better with lifters that have extensions to allow more pads (or more distance between pads) to attach to a panel, from one end to the other, reducing the amount of overhang and putting less stress on the material.
When lifting or moving panels with slings, panels are more likely to be damaged; for example, by a sling being removed prematurely. Conversely, lifter use reduces this damage risk. Achieving the correct pitch for roof panel installation is not only possible, but also easier when using a lifter. By slightly adjusting the attachment point, the hang of the panel can match the pitch.
Also, when a panel is ready to be placed by a lifter, there are no slings that crew members would need to remove immediately beforehand. Depending on the type of lifter used, the tilt function can be used to maneuver a standing seam panel to lock it in place with an already placed panel without having to adjust the pitch.
Flipping Panels
To economically ship IMP roof panels, most manufacturers invert every other panel. A tilt-capable lifter makes it easier to flip inverted panels when removing them from the bundles. Tilting the load upright (male side up, female side down) allows crew members to set an inverted panel on its edge temporarily before landing it face-up on another surface. Again, this is a labor-saving benefit of the lifter.
“Flipping these 500-pound panels would be a four-man job, and with the cladding lifter it was a two-man job,” says Brookes Reierson of Apex Steel Inc., Kirkland, WA. Reierson says that the lifter would have paid for itself in the number of man-hours Apex saved by using the lifter on a 17,500 sq. ft. construction project.