With miles of sewer pipes now being renovated annually, there are far too many instances where a dry fixture trap has caused a lot of grief for residents, business owners, contractors, and municipal utilities.

​

CIPP has proven to be a great product, one that has revolutionized how we maintain our wastewater infrastructure and avoid mass disruption to our fast-paced lives. So, what is really going on, and why do we not have an answer to the occasional resident being exposed to CIPP emissions in their home?

 

So far, the response has been to tell people, “It’s OK, it won’t hurt you … just pour water down your drain and open the windows.” That’s not much of a solution, but that is how our industry has addressed it until now.  

 

A number of issues can arise from the sequencing of events dictated by current installation practices:

​

• The cleanouts are installed by the lateral lining contractor and are generally not in place when the mainline liner is installed.

• If the service cleanouts are not in place, the contractor is unable to plug the service pipe and manage unintentional flow.

• Unintentional flow may consist of facility use by the homeowner; footing tile/sump-pump connected to the sewer, roof leaders, and infiltration from the private side sewer lateral.

• This creates an opportunity for discharge of sewage from multiple buildings during inversion and curing of the mainline liner.

• Sewage mixed with the resin saturated liner can impair CIPP quality.