Fastener Selection Guide

®

Customer Service Centers
Salem, OR: 503-390-7174 or 800-272-7023 I Spokane, WA: 509-536-4097 or 800-776-8771

www.ascbp.com

Most Common Fasteners used in the Installation of Metal Roofing and Siding
Exposed Fastener Panels	
A	A	A
			 B	
Installation Type	Placement - A Panel-to-Substrate	Placement - B Panel Lap	

INSTALLATION OVER PLYWOOD OR OSB	

#14 Milled Point	

#14x7/8” Stitch (Lap) Screw	

INSTALLATION OVER METAL FRAMING	
	#12-14tpi Self-Drill (For 22-14ga Framing)	

#14x7/8” Stitch (Lap) Screw	
	
	#12-24tpi Self-Drill (For 14ga & Heavier Framing)			

INSTALLATION OVER DIMENSIONAL LUMBER	

#9 Metal-To- Wood Screw	
	
#12x3/4” Stitch (Lap)
Screw
(#12 Screw Head Matches Panel Screw Head For Consistency)	
Concealed Fastener Panels		Trims & Flashings Attachment	

Skyline Roofing		
	
#14x7/8” Stitch (Lap) Screw	

For trim-to-trim and trim-to- panel attachments.	

INSTALLATION OVER PLYWOOD OR OSB	

#8 Modified Truss Head Screw (Primary)

#10 Pan Head Wood Screw (Secondary)		
	#12x3/4” Stitch (Lap) Screw		
			
	1/8” Stainless Steel Rivets	Option for trim-to-trim attachment. Not watertight	

Roofing Nails	Used to temporarily hold a flashing in place that needs to be installed prior to panels.	

Design Span hp					
	Proper Installation of Gasketed Fasteners

Correctly Driven	Under Driven	Over Driven
FASTENER NOTES:
Refer to installation guides for proper fastener attachment spacing and location of fasteners across panel. Additional fastener attachment
information located within ASCBP’s code compliance reports: ER-0550 & ER-0309 .
	Items in shaded box are available color matched with our metal roofing or siding.
Screws must be properly driven to ensure proper seal and holding strength. Do not underdrive or overdrive the screws, especially those with sealing washers.
Panel attachment screws must be long enough to penetrate through the substrate by at least 3 ⁄8" (if lumber, penetrate into lumber by at least one inch of effective threads (not including tapered portion).
All screws must have durable, long life organic coatings, or be made of stainless steel to provide adequate protection against corrosion.
It is recommended that fasteners be sourced through ASC Building Products to ensure quality fasteners, and color matching is achieved.	

INSTALLATION OVER WOOD	

#10 or #12 Pan Head Wood Screw		

INSTALLATION OVER METAL FRAMING	

#10 or #12 Pan Head Self Drilling Screw

#12-24tpi Pan Head Self drilling screw (For 14ga & heavier framing)