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FAQ for CIPP Trenchless Restoration of Drains and Sewer lines

What types of pipe systems can you line?

We have the technology to restore Sewer, Drain and Storm systems both horizontal and vertical with diameters from 2″ to 8″.

How is Cured in place pipe restoration performed?

There are several options available to us to install a cured in place pipe (CIPP). Most of them do not significantly change the end result, only the method of installing it. The two most common CIPP methods are “inversion” and “pulled in place”. Inversion lining only requires one access point close to where the new liner will be installed. This is performed using an epoxy saturated felt tube to be “inverted” or turned inside out directly into the host pipe. After which an inflatable bladder is also inverted into the felt tube. Once the epoxy has hardened, the bladder is un-inverted and removed, leaving the new pipe in place. The Pulled in place method requires two access points but has the advantage of allowing those access points to be over 100ft from the pipe to be restored if necessary. With the pulled in place method, a similar epoxy saturated felt tube and bladder is pulled into place with a small cable and the bladder on the inside is inflated. Once the epoxy liner has hardened, the bladder is deflated and removed.

What is the difference between a CIPP line and a traditionally replaced one?

Cured in Place Pipe (CIPP) restoration only requires the current pipe as a “mold” to install the new pipe inside the existing one. Once the new CIPP line is installed, the “host” pipe is no longer needed. The new CIPP line will meet or exceeds all the ASTM standards required for pipe replacement. The only real advantage of traditional pipe replacement is when the existing line is not a candidate for CIPP restoration. The older means of pipe replacement where a plumber will dig down to replace the existing pipe requires the demolition of whatever is above the existing line. If there are major offsets or bellies (typically over 25%) or a collapsed pipe, CIPP will most likely not be a candidate for CIPP restoration.

How many hours does the epoxy take to cure?

It typically takes from 1.5 – 5 hours for the CIPP line to cure and harden, depending on the formulation of the epoxy resin used and the method for “Curing” the pipe.

Which installation and curing method is best for my situation?

A qualified CIPP Technician can determine the best overall solution, especially when they have multiple options available to them. The end result will not differ significantly, it is the method of installation and curing that needs to be matched to your current situation. A qualified technician will take into consideration several factors, including the access points available, the ambient temperature, depth of the pipe in relation to the water table and overall assessment of the situation.

How long does the water need to be off for?

It is usually best to avoid using your drains while the liner is being installed.

Can You Install A Pipe Liner Without Digging Up My Yard Or Driveway?

In most situations yes. That is one of the biggest savings that pipelining can provide, saving your driveway, sidewalk, and yard from being broken up and needing replaced or repaired. It can also often prevent you from needing to dig up city sidewalks and streets which can be complicated and expensive.

Is a CIPP Liner the Same Thing as Trenchless Pipe restoration?

CIPP lining is a subset of a larger family of technologies that make up Trenchless Pipe Restoration. Options like Pipe Bursting and Pipe Coating are also available when CIPP lining is not the best option. Pipe Bursting require the excavation of both ends of the pipe and Pipe Coating does not create a new structural pipe, but does stop the corrosion and erosion of the existing line. Like most answers, it depends on the situation. There are also a variety of older technologies in the “Trenchless” world that still exist, but they have neither economic or end-result advantages and have simply fallen by the wayside.

Do You Have to Be Certified To Do Trenchless Pipelining?

All trenchless pipelining installers should be certified, but just because someone has the equipment and materials does not mean that they are. Always make certain that you are working with a certified and insured installer.

What is epoxy?

It’s a two-part epoxy. There is a base and catalyst, once mixed it activates the epoxy and begins curing (hardening).

What type of pipe does this work with?

We can line clay, cast iron, ABS, PVC, Concrete and sometimes Orangeburg.

Which method of trenchless is best?

There isn’t one technique better or worse than the other. The right trenchless method for your property is usually determined after a professional can make an onsite evaluation.

What should I look for in a company that provides this technology?

When you select your contractor, look for these characteristics.

a. Certifications– Are they certified to perform this work by the manufacturer?
b. Insurance– Don’t ask them if they are insured, have them show you proof.
c. References– The key to accepting references is to call a few. Don’t be shy. These references may give insight to what it’s like working with this contractor.

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