Distinguish inside and outside
Show the connection in context and explain whether it is indoors, outdoors or in a wet area. Photograph cracks, separated edges and adjacent damage. A close-up alone often leaves out important context.
Agree material and function
Planning should establish the role of the connection and a sealant suited to the substrate. Painted joints, natural stone and plastic frames need a specific material assessment.
Describe related symptoms
Include draughts, moisture or cracks in adjacent elements when present. The visible seal may be only one part of the complete building connection.
Your project in Luzern
For Luzern and neighbouring municipalities, include the property address, affected room and requested work. For balconies and terraces, add overview photos of edge connections, drainage and visible damage.