The building envelope, in turn, is provided with a seal to protect the people and objects inside, as well as the building itself, from external influences, in particular water penetration. The building penetration therefore also penetrates the waterproofing.
Appropriate sealing systems, also known as penetration systems, are used to create a gas-tight and watertight transition from the building seal to the pipe. This restores the waterproofing of the building.
The building waterproofing and therefore also the penetration system are located on the outside of the building, which means that access to the penetration system is often limited or even impossible. For this reason, the majority of penetration systems must function without maintenance. Depending on how the building is used, the service life - and therefore also that of the penetration system - can be up to 50 years. This clearly demonstrates the high quality demands placed on such a penetration system.
