Why is a layered sealing system (3-level system) important?
Proper window and door connections require a well-considered build-up in three functional layers. Each layer fulfils a specific role within the whole, and together they ensure a durable and energy-efficient connection.
These three functional layers are the following:
- Outer layer – protection against weather influences
- The exterior forms the first line of defence against external influences.
- Middle zone – insulating core
- The central layer is responsible for both thermal and acoustic performance.
- Inner layer – airtight finish
- The interior ensures control of air and moisture flows from inside the building.
According to the applicable EPB regulations, all connections between building components are important, including the zones around windows and doors. Investing in high-performance glazing, efficient window profiles and highly insulating walls loses its effect when connections are not properly finished. Air leaks and thermal bridges have a direct negative impact on both energy performance and comfort.
With a system approach in which the outer, middle and inner layers are properly coordinated, DL Chemicals offers an integrated solution for durable and energy-efficient connections.
