When deciding on resin for lateral lining, you don’t really have a choice if you want to be compliant to the Australian Standard. Your resin choice must be Watermarked and form part of a system. That is, you cannot mix and match resin from a competing system and use liner from another, even if you could somehow buy the same resin or liner individually from another source, it will not be Watermarked and you leave yourself open to all sorts of adverse ramifications.
Epoxy, Silicate, Vinyl ester and Polyester resins are available for pipelining with different curing times and strengths available. These resins have been developed for relining pipes; all their characteristics have been considered for the correct pipe reline.
Of the four examples, it is now broadly accepted within the industry that Vinyl ester and Polyester resins are not suitable for lateral lining due to their high odour levels and excessive shrinkage.
For the remaining two, it is important to understand the characteristics of a resin and its ability to complete the job in a competitive method before deciding on which resin is more suitable. Strength, ease of installation and cost of material should all be taken into account.
Damage to a liner can occur from many challenges including ground movement, tree roots, surrounding pressure on the drain from many causes, also within the pipe; heat, chemicals and abrasion. All these factors can affect the performance of the liner, so a stronger and more durable liner will give you a greater chance of success.
It’s all about the system you are using: getting the best results relies on matching the right resin with the correct type of felt or reinforcing material.
When using Epoxy resin, felt is only there as a host. It simply holds the resin in place until it cures, after curing the felt serves no structural purpose. Epoxy resin on its own is stronger than epoxy resin combined with a felt liner, the liner reduces the strength with any given thickness. It is critical that the liner match is compatible: if your liner hasn’t enough free space to accommodate the chosen resin characteristics, the liner will fail the standard.
When using Silicate resin, felt is not suitable as a host because Silicate needs added strength to form a compliant liner or the thickness required would be unreasonable. If you were to attempt a lateral liner with this felt method the tendency for the Silicate to shrink would cause a great likely hood of the liner failing.
The challenge with Silicate resin is it requires added structural strength and this comes in the form of a fibreglass matting, prepared in the correct manner and this will minimise its tendency to shrink over time. (Not sure if the glass liners on the market can give the required added strength) The facts speak for themselves and silicate resin with a felt liner is prone to shrinkage and is much weaker, with as much as half the strength of standard Epoxy.
WaterMarked engineered Evoline Epoxy resin with felt liner system has been matched to give you a liner that has strength, ease of installation and cost of material are all taken into account. Evoline system is the most competitive system on the market, with its cured liners up to two to three times stronger than the Australian Standard, making Evoline a worthwhile investment.
As to which resin you should be using, you now have some facts to help you in making that decision, if you would like some more assistance in your decision making, please feel free to contact NO-DIG DEPOT any time for obligation-free friendly advice.