Sealing pipe sealing

Pipe sealing systems are used to protect areas where installations pass through external building partitions. These penetrations, most often located in the underground sections of buildings, are among the most critical points of the structure. A properly executed seal eliminates the risk of water penetration along pipes, protects the interior of the building from flooding, and prevents damage to the surrounding walls.

What is a penetration leakage?

This is a break in the building’s waterproofing at the junction of two extremely different materials—a rigid concrete or masonry structure and the smooth, often flexible surface of a utility pipe (PVC, PE, steel).

The main causes of leakages:

Lack of initial sealing of the space between the pipe and the wall, vibrations and movement of the piping system during operation, thermal shrinkage of materials, aging of the originally installed seals, and excessive groundwater pressure.

Classification of methods based on their nature:

Depending on the method of blocking the water and the condition of the system, we distinguish between the following methods:

• Chemical (injection) – involving the injection of materials that are bindable or swellable inside the void space of the culvert, blocking the flow of water.
• Mechanical (pressure-type) – involving the installation of prefabricated components (e.g., IZOPRESS sealed pipe penetrations), which, when the clamping screws are tightened, mechanically expand the rubber ring, permanently and tightly sealing the space around the pipe.