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3 Common Types of Resin for Pipe Relining

plumbergranville polyester-resin

The most important component of pipe relining is probably the liner and what it is made of. A pipe liner can be a mixture of different resin and each variety has its own advantage and setback. When you reline a pipe or sewer system, you aim to strengthen its piping by reinforcing them. The first step is always preparing the pipe for the liner. The contractor cleans and inspects it thoroughly and then after that, the liner is prepped. This is then fed through the entrance hole made for this process and then cured using steam rollers or flushing the entire relined pipe with hot water. After the pipe relining process and the liner has properly cured, the contractor sends a camera down the pipe -just as he did in the initial inspection, to make sure that the relining was indeed a successful one. After the whole ordeal is done, you can be confident that you have given your piping system another 50 or more years of service.

There are a variety of resins that your local plumbing company can offer but here are three of the most common and trusted resin liners:

  1. Polyester Resin

This type of resin is a very popular lining solution. Because of its low pricing, more and more people opt to use this resin. There are some homeowners that are appealed due to this resin fast curing time compared to the other types of resins. However, no matter its sturdiness and commendable properties, this resin is not entirely faultless. Because it is partly made of styrene material, when used in water mains, liners and pipes that uses this type of resin is liable to produce a smell and has a tendency to be cancerous if not ventilated and processed properly. This resin also has the characteristic of shrinking when used continually.

  1. Epoxy Resin

Contractors prefer this kind of resin because of its resilience and durability compared to polyester resin and vinyl ester resin. Because of its low shrink rate, one can say that epoxy resin is more compact than the two resins mentioned. In addition, epoxy resin used in pipe linings have the same kitchen grade as that white interior coating in tin cans of canned goods. This means that this resin is safe to be used in water mains and other supply lines. You also do not have to worry about foul and unpleasant smells coming from the pipe liners because there are none. Given these factors, epoxy resin is not a perfect compound. It is very difficult to combine epoxy with other materials to make a liner. Once it is combined, this mixture does not have a long shelf life. And curing an epoxy liner will take about 8 hours. The measurements of this liner also need special attention. Displacement in the ratio may cause the liner to never settle and cure. In a nutshell, epoxy resin is the best type of liner you can fine given that you observe and follow the installer manual to the dot.

  1. Vinyl Ester Resin

This is a hybrid resin. A combination of polyester resin and epoxy resin makes this a very marketable lining material. The best thing about this liner is its strong resistance against corrosion and repelling properties against 1-11 pH range of environment. The pricing rate of a vinyl ester resin is in between that of polyester and an epoxy. Unfortunately, just like the polyester resin, a vinyl ester is also cancerous, has high shrinking tendency and produces odour.