H P Partial Fill Cavity Slab

Product Rockwool HP Partial Fill Cavity Slabs comprise a robust outer surface (designed to withstand on-site rigours) engineered to a resilient inner face (designed to absorb irregularities of the inner leaf). The robust surface maintains a more clearly defined cavity whilst the resilient inner surface eliminates ‘stand off’ from the inner leaf, maximising thermal performance. Due to the nature of the material, the slabs will knit together when tightly butt jointed. Extraneous heat loss caused by gaps is eliminated, ensuring a thermally efficient system.

High performance Partial Fill Cavity Slab

Advantages

• Robust front face resists damage
• Slabs knit together to eliminate gaps
• Maximises thermal performance
• Water repellent
• Can be used in high rise buildings

Dimensions

Rockwool HP Partial Fill Cavity Slabs are produced in a
standard size of 1200 ¥ 455mm to suit a vertical wall-tie
spacing of 450mm, and in standard thicknesses of 40, 50, 60,
70, 80, 90 and 100mm. For other thicknesses please contact
Rockwool.

Condensation control

When calculating vapour diffusion through a structure,
the vapour resistivity of Rockwool is negligible and is
usually considered to be the same as for air (typically
5MNs/gm). HP Partial Fill Cavity Slabs therefore reduce the
risk of condensation and allow natural drying out of a wall
construction due to their ability to ‘breathe’.

Fire classification

Rockwool HP Partial Fill Cavity Slabs achieve a reaction to
fire classification of A1 as defined in BS EN 13501-1.