To answer your question with any certainty, it would be useful to know the maker of the canoe. Pictures of the canoe would also be useful (besides, we just like looking at pictures of canoes). If the boat is an Old Town, give us the serial number and we should be able to provide you with a copy of the build record which would have details of your boat's construction.
Also, Whether you are going to do the repair/restoration work yourself or have someone else do it, you would do well to get a copy of "The Wood and Canvas Canoe: A Complete Guide to its History, Construction, Restoration and Maintenance" by Rollin Thurlow and Jerry Stelmok, which is back in print and available from the WCHA online store, and other places. (Beware -- Amazon and others are selling used copies of the earlier printing for more than a new copy of the current printing.) Also very useful is Jerry Stelmok's "Building the Maine Guide Canoe."