Identify chamber direction and wall thickness. The expansion zone must suit the unit geometry.
Method basis: Rigips/Knauf system guidance and Fischer/Hilti fixing-selection principles. Final parameters always come from the selected product data.
How to plan the installation
Drill without aggressive hammering, preserve internal webs and use a hollow-masonry product.
Common mistake
A conventional expansion plug may spin or break thin webs when it is not designed for them.
Pre-start check
- Was the structural base identified rather than only the finish?
- Does the weight include contents and projection?
- Were services, edges and minimum spacing checked?
- Does the product data permit the base, direction and environment?