HP Partial Fill Cavity
Cavity Solutions

High Performance Partial Fill Cavity Slab

The sky’s the limit 

Buildings, whether residential or commercial, require effective insulation to keep the weather out and importantly, the heat in. The ROCKWOOL High Performance Partial Fill Cavity Slab has been developed to provide effective thermal insulation for both masonry and frame constructions.

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The ROCKWOOL High Performance Partial Fill Cavity Slab, a semi-rigid insulation solution created for masonry cavity wall construction, is a durable cavity wall insulation solution made of renewable stone wool fibres. It withstands typical conditions, maximises thermal performance and provides a fire-resistant insulation. It has been specially designed to absorb any irregularities on the inner leaf and eliminate ‘stand off’. These features in turn maximise the product’s thermal performance effectively whilst also withstanding on-site rigours to ensure the longevity of -the external wall construction. The fire resistant, mineral wool insulation product creates slabs which increase energy efficiency by knitting together when tightly butt jointed to eliminate potential heat loss caused by any gaps. As a high quality and long lasting product which features a strong outer surface, the High Performance Partial Fill Cavity Slab offers a stable product that will last for the lifetime of the building. 

Accreditations:

Euroclass A1 non-combustible  / BBA Certificate  93/2884 for use in tall buildings up to 25 metres in height.

  • Aim high – the High Performance Partial Fill Cavity Slab is recommended for high rise buildings up to 25 metres due to its effective thermal performance ratings.
  • Durable – as a future-proofed solution with a robust front face, it is designed to withstand typical conditions on-site and absorb any irregularities on the inner leaf.
  • Maximises thermal performance - working effectively to maintain the building interior’s heat. (is 0.034 at 90mm< and 0.035 90mm>)
  • Water repellent - the High Performance Partial Fill Cavity Slab ensures protection against typical weather exposure and moisture in the atmosphere.
  • A high quality solution - preventing unwanted sagging or slumping to maintain the robust outer surface.
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Product Properties

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Compliance BS EN 13162, ISO 14001
Reaction to fire Fire Properties A1 (BS EN 13501-1)
Thermal conductivity 0.034 W/mK
Water repellent Water Repellent
Water vapour resistance Negligable
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Product range and ancillaries

Item number

Thickness (mm)

Width (mm)

Length (mm)

Item number External item number Thickness (mm) Width (mm) Length (mm) Pieces Per Pack Packs Per Pallet m² Per Pack m² Per Pallet
123361 123361 50 455 1200 8 15 4.37 65.52
123363 123363 70 455 1200 6 15 3.26 48.9
123364 123364 80 455 1200 8 10 4.37 43.68
181210 181210 100 455 1200 6 10 3.28 32.76
123371 123371 120 455 1200 5 10 2.78 27.3
123372 123372 130 455 1200 5 10 2.73 27.3
253975 253975 150 455 1200 4 10 2.18 21.84
256027 256027 170 455 1200 4 10 2.18 21.84
123366 123366 90 455 1200 7 10 3.82 38.2
253975 253975 150 455 1200 4 10 2.18 21.84
248860 248860 160 455 1200 4 10 2.18 21.8

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HP Partial Fill Cavity

HP Partial Fill Cavity Datasheet