A door sill with thermal insulating internal layer is an important part of the thermal insulation of every house. Proper installation and sealing of the sill is extremely important and difficult in each, especially new building.
The sill used by Wiktorczyk is a low sill that allows ease passage, it is also accessible for disabled people.
This sill is characterised by:
- Use for barrier-free building in accordance with DIN 18 025
- Being waterproof as confirmed by research at the ift Institute in Rosenheim
- Thermally insulated interior space according to DIN 4108 – 4
- Hidden mounting screws