How are water pipes repaired without digging?

What happens when a water pipe in a town is blocked or damaged? There is no need to immediately dig up entire streets and roads. Two efficient methods exist through which water pipes can be repaired without major disruptions to roads and people’s lives. How are such repairs achieved?

A water pipe defect is a real nuisance to all citizens. Drinking water supply outages make living complicated and inconvenient. If locating the defect is difficult, the situation becomes even worse, as municipality leaders have a considerable amount of work to do – find a company to locate and remedy the defect, provide a vast number of people with a substitute supply of drinking water, and other complications.

If the pipe is repaired using excavation, everything is protracted and more expensive.

However, water pipes can be repaired using a much quicker and more efficient method – with trenchless technologies.

Cementing and UV-cured sleeves – unique trenchless technologies for water pipe repairs

Repairs of water supply pipes are specific in that the technology used must be hygienically safe. In an ideal case, the repair should last for many years.

Let us now consider both unique trenchless repair methods for water pipes.

Trenchless water pipe restoration using SAERTEX-LINER H₂O UV-cured liners

SAERTEX-LINER H₂O is a sleeve method of water pipe repair, and our company, BMH s.r.o. is the only provider of such repairs in the Czech Republic. This is a rapid, clean and precise rehabilitation method designed especially for repairing pipes that carry drinking water.

Benefits of SAERTEX-LINER H₂O:

  • Suitable for restoring pressurised pipes of DN 200–1,500 mm in diameter
  • Service life of 80 to120 years
  • Maximum sleeve length of 320 metres
  • Excellent mechanical properties, even when under high pressure
  • Smooth surface for premium hydraulic parameters
  • Water is not contaminated during the pipe repair.

Trenchless water pipe repairs by cementing

Water pipe repairs that use cementing are a common method for protecting the interior surface and in addition to drinking and utility water pipes are also used for restoring sewers. The cement restoration mixture is applied to the cleaned pipe surface using a machine winched through the pipe.

Benefits of pipe cementing:

  • Suitable for restoring pipes with DN 250–1,500 mm
  • Usable for steel, cast iron, and asbestos cement pipes
  • Cement screed applied at a thickness of 3 to 12 mm results in negligible reduction of the pipe’s internal diameter.
  • Smooth and rapid pipe repair
  • The cement liner prevents iron oxide leaching from original piping walls and protects the inside from corrosion.
  • Restores the hydraulic properties of the pipe surface.