ROCKWOOL HP Partial Fill Cavity Slab  


ROCKWOOL High Performance Partial Fill Cavity Slab is a semi-rigid partial fill insulation solution for masonry and framed cavity wall construction. It is designed to withstand typical conditions on-site and absorb any irregularities on the inner leaf. Consists of a robust outer surface engineered to a resilient inner face. The slabs knit together when tightly butt jointed, eliminating heat loss caused by gaps.


  • Robust front face resists damage
  • Maximises thermal performance
  • Non-combustible (Euroclass A1)
  • Prevents water transmission from the outer to inner leaf
  • No sagging or slumping
  • Can be used in high rise buildings