I finished the last post by describing my plan to cover the shed roof with a tarpaulin. Dissatisfied and impatient, I executed it two days later. The task was much easier than I had expected.
I was well prepared, having run the procedure in my head many times, even at the beginning when I was considering which of felt and tarp to use for the roof. So, when Amazon delivered the 3m x 4m tarp, I already knew that I had to use holdfasts to secure it against the wind whilst I worked, that I had to fold the slack so that it fit on the 2.5m x 3m roof, that I had to fasten it with washers and screws, and that I definitely had to stand on a thick board when I was on the roof. Starting the repair as soon as I signed off work, I finished in just about one hour.
Later that evening, the rain that was forecast arrived, and I could assess whether the job was good enough. I was pleased to see that water did not leak into the shed—everything inside remained dry. But I was concerned by water puddles remaining on the roof for a few days after the rain stopped.
My other worry is about the quality of the tarp. With a weight of 90 grams per square metre (gsm), it is noticeably thinner than my other 150 gsm tarp used to collect garden rubbish. I am not confident that it will last long against exposure to the weather, foxes, and the neighbourhood cats. This said, I console myself with the thought that the tarp is cheap and easy to replace.