Repairing Canvas

There are times when canvases become torn (or I get a great deal on one that is) and so  I like to repair them in a way that is archival so it won't eventually eat through the canvas, stain or come apart.

Supplies
gel media
an old paintbrush
raw canvas
a pair of scissors.

1.  First, I cut a patch a little larger than the tear.  I tend to make it about an inch wider and longer to ensure that it will adhere well.
2.  Using my paintbrush I add a fairly thick layer of gel media to the back of the canvas, place the patch on, and repeat.  I smooth out the torn edges on the opposite side and using my fingers hold it firmly while I smooth out the gel media on the back.
3.  I turn the canvas to face me and add a fairly thick layer of gel media over the tear and smooth that out well.
4.  Once the gel media is dry, though you can still see the torn area, when I feel it with my fingers it is fairly smooth.  And, in any case, paint will cover it.