The roof on our outdoor room/wall tent developed a small tear. The neglected small tear evolved into a large tear. This weekend, Eric and I made a point to focus on some lingering projects and tending to the tent was high on the list.
In between Saturday's rain showers, we covered the hole with a tarp and sewed it in place. The heavily sun exposed canvas was quite brittle, but the stitches held.
I recommend a canvas sun shade/rain fly to prolong the life of the tent. Our tent still has a summer a head of it, but it has weathered quite a bit since pitching it four years ago.