For more information about SIGDERS, visit www.sigders.ca.

Following is a list of all SIGDERS members:

Atlas Roofing Corp., Atlanta
Canada Post Corp., Ottawa, Ontario
Canadian General Tower Ltd., Cambridge, Ontario
Canadian Roofing Contractor's Association—Ottawa
Carlisle Syntec Inc., Carlisle, Pa.
CSSBI, Cambridge
GAF Material Corp., Wayne, N.J.
Firestone Building Products Co., Indianapolis
Genflex Roofing Systems, Maumee, Ohio
IKO Industries Ltd., Brampton, Ontario
ITW Buildex, Itasca, Ill.
Johns Manville Corp., Denver
NRCA
RCI Inc.—The Institute of Roofing, Waterproofing and Building Envelope Professionals
Sarnafil Inc., Canton, Mass.
Soprema Inc., Drummond Ville, Quebec
Stevens Roofing Systems Inc., Holyoke, Mass.
Tremco Inc., Toronto
Trufast Corp., Bryan, Ohio
PWGSC, Ottawa

This Web exclusive information is a supplement to Making progress.