Use And Care Manual

Steel Panel Installation:
Proper lapping of steel panel is very important in the panel’s ability to prevent leaking.
Improper lapping may also cause fasteners to penetrate the anti-syphon drain channel resulting in
leaks.
The anti-syphon drain channel must be clear of debris and obstructions for the panel’s ability to
minimize the potential of capillary action of water from getting under the steel panel.
Installing fastener perpendicular to the steel panel and fastener tightness are critical in the longevity
of the fastener’s ability to help prevent leaks and structural load carrying capacity. Over-torquing of
screws will reduce the screw’s withdrawal capacity, regardless of the construction materials involved.
Under-torquing of screws will increase the potential of roof leaks.
Fastener location is critical for installers to minimize the potential of oil canning, dimples, and other
appearance related issues.
Note: Both professional and rst time installers have fewer problems with oil canning, dimples, and
other appearance related fastener seating problems if they install them on top of the rib.
Application RPM Speed
Panels to wood 2,500
Panels to metal - self-drill 2,000
Panels to metal - self-tap 1,000
The use of higher drill/driver for wood applications can result in over tightening or stripping out the
fastener. Attempting to install self-drilling fasteners into steel substrates with faster drills/drivers can
result in fastener failure due to the points burning up.
Impact drivers are NOT recommended for fastening panels. With the higher torque produced by
these drivers, fasteners can be easily over driven to the point of the washer being over tightened or
the fastener breaking. Additionally, the impacting action can cause excessive paint damage to the
fastener heads and thread strip out.
Undertight
Proper Fastener Tightness
OvertightProper
Underseat
Proper lapping of Steel
OverseatProper
Anti-Syphon Drain Channel