insider
Yes they insert a inflatable bladder that blocks a section of pipe and flood it up stream of the bladder and measure the drop
if any in the water level.
Usually a builder is paying when I see it so not sure of the costs maybe be a hourly situation but it won't be cheap unfortunately.
if any in the water level.
Usually a builder is paying when I see it so not sure of the costs maybe be a hourly situation but it won't be cheap unfortunately.
Hrmm interesting I see, is there anything I can buy or make to block it, any ideas ?