Do I need more than one waterproofing kit?

The Warmup Waterproofing Kit is comprised of a 35’ roll of 3-ply membrane measuring 5” in width. This is applied to the perimeter of the room and to seal butt joints or corner joints. Preformed, seamless corners are include in the kit as well, with 6 inside and 2 outside corners. The typical 6×10 L-shaped bathroom will have 5 inner and 1 outer angles and the kit will provide for a couple of spares.

Related:

https://warmupedia.warmup.com/questions/waterproofing-kit-installation/

https://warmupedia.warmup.com/questions/need-waterproofing-kit/