These pipes are wrapped with a layer of foam or styrofoam type of insulating material to protect them from the concrete and any type of movement. However, the video warns that if there is a tear in this protective coating, it should be fixed.
According to the video, simply taping the tear will do the job. Rewrapping the entire pipe is not recommended because it could create problems with the sand, the visqueen, and even the concrete footing.
The video explains that the plumber most likely did not install the pipe with a tear in the protective coating. So, if you see something like this while working on a plumbing job, the video advises grabbing a piece of tape and fixing the tear or contacting the plumber to let them know about the problem.
The video concludes by emphasizing the importance of repairing the damaged protective coating around the waste pipes. Over time, if the concrete is touching the plastic pipes and there is any movement, it can wear a hole right into the plastic pipe, which can lead to a water leak.
In summary, the video instructs viewers on how to repair a damaged protective coating around waste pipes running through a concrete footing. It highlights the importance of this repair to prevent the concrete from wearing a hole into the plastic pipe over time, resulting in a water leak.