I have a canvas boat top that came apart at a seam.

I sewed it back together, and it holds ok.

Any tips on how to seal the seam?

Thanks.

Paint??
You probably already know this, but canvas on frame canoes use paint for waterproofing. Don’t see why this would not work on the cover as well.

Losso Seam Sealer
http://www.glfi.com/marinecatalog_miscellaneouspage.htm





Scroll down to it…you can combine with the seam tape for better waterproofing…

Tent seam sealer
?