We have been experimenting with resin coating on the inner surface of cast iron guttering over the winter months, and we are finding that it definitely has its place alongside conventional guttering repairs.
In two situations it can save an enormous amount of time and money. Firstly, if the majority of the guttering is sound and in good repair, using resin to coat and isolate a small rusty leaking section can be an economic way of prolonging the life of the rusty section of the gutter until the whole lot needs replacing. This might give as much as five, or ten, years extra service before the major replacement is needed.
The other situation where resin coating more than pay for itself is if the casting of the gutters or junctions is unique. Where a design is cast into the guttering system, a repair to incorporate the original cast iron work can be costly if it is possible at all. A resin coating on the inside of the original cast iron work can ensure that it continues to fulfil its original function, as well as preserving its integrity by excluding the elements that caused the rusting from the original ironwork. As a means of preserving older cast ironwork, we at PipeServ recommend it.
We have had a lot of success using resin patches in damaged
drain and sewer pipes. After we have
inspected the inside of the pipe with a camera survey, we clear any
obstructions before we put a resin patch on the damaged section. After the patch has cured, we do a further
camera survey to make sure the repair has properly bonded.
We find this system has advantages in both time and
costing. As we don’t need to excavate
the pipe to repair it and we don’t need to reinstate the ground after the
repair, there is a lot less mess. We can get straight on with the repair,
saving time at both ends of the job. There
are limitations with this technique and not all pipe defects can be repaired
this way, but if we think it would be a viable way of curing a problem we would
discuss it with you.