Duro-Last Composite Drain Rings - Manual

Duro-Last: The Proven Performer®
"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.
DATA SHEET
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DURO-LAST ® COMPOSITE DRAIN RINGS
Description:
Duro-Last® Composite Drain Rings, or “CDRs”, are
manufactured from a state of the art epoxy-fiberglass
composite. The rings are shipped tied together with a
cord approximately 12 inches (305 mm) long. Their
purpose is to provide compression in order to create a
positive seal between the drain boot and the drain
pipe.
Installation:
1. Insert the first drain ring as low into the installed
drain boot as possible, 6 inches (152 mm)
minimum depth. Cut the compression ring cord to
expand the ring.
2. Install the second ring in a like manner with the
opening located opposite the opening of the first
ring. Cut the compression ring cord to expand the
ring.
3. Sealant and CDRs must be installed at the same
depth within the drain.
4. Refer to detail 2020 for installation information.
Revised: 4/6/2011
14
Composite Drain Rings
(Install per detail drawing 2020)