Anne in CA
Nov 11, 2008, 10:42 AM
The main drain line of my 100 year old house is made of clay and is severely infested with roots. We plan to do a trenchless pipe repair. We have gotten opinons and estimates from 4 different companies, but are having trouble evaluating the accuracy of differing opinions. Specific questions:
One company that is recommending relining the pipe says that you need to use different size liners for the 4 inch section of pipe versus the 6 inch section of pipe. As such, they would need to open the hole at the point where the size changes, which is under the sidewalk. Other plumbers seem to think its OK to use the same liner size throughout. Thoughts?
One company says the epoxy resin lining material used by other companies is "not approved", while the Vinyl Lucent material used by his company is. Accuracy?
Currently the root infestation is so bad where my grass meets the street curb that no one can get their camera past that point. (It's the part of pipe closest to the offending tree). One company has recommended opening the hole at that point and then pipe bursting the section of pipe between the house and the curb. Once the hole is open, they can then evaluate the extent of root damage between the curb and the connection to the city line. Depending on the extent of damage they then find on that latter section of pipe, they would either hydrojet or reline on the latter section. Why would one company recommend different apporaches on the two sections of pipe, while other three companies recommend relining throughout?
Thanks for any insight you can provide!
Anne
One company that is recommending relining the pipe says that you need to use different size liners for the 4 inch section of pipe versus the 6 inch section of pipe. As such, they would need to open the hole at the point where the size changes, which is under the sidewalk. Other plumbers seem to think its OK to use the same liner size throughout. Thoughts?
One company says the epoxy resin lining material used by other companies is "not approved", while the Vinyl Lucent material used by his company is. Accuracy?
Currently the root infestation is so bad where my grass meets the street curb that no one can get their camera past that point. (It's the part of pipe closest to the offending tree). One company has recommended opening the hole at that point and then pipe bursting the section of pipe between the house and the curb. Once the hole is open, they can then evaluate the extent of root damage between the curb and the connection to the city line. Depending on the extent of damage they then find on that latter section of pipe, they would either hydrojet or reline on the latter section. Why would one company recommend different apporaches on the two sections of pipe, while other three companies recommend relining throughout?
Thanks for any insight you can provide!
Anne