Knauf Insulation » Products » Rock Mineral Wool Slabs » Roof Slabs » Krimpact Flat Roof Slabs

RockNFRC LogoKrimpact™ Flat Roof Slabs

For the thermal insulation of flat roofs where a medium level of traffic is required, and hence compressive strength is an issue.

Description

A range of high strength, consistent density, rigid slabs made from rock mineral wool, manufactured using  Krimpact™ technology, specifically designed for use in flat roofing.

The Krimpact Flat Roof Slab product range includes two slab densities:

  • Krimpact Flat Roof Slab
  • Krimpact Flat Roof Slab Extra

Krimpact™ technology realigns the mineral wool fibres during manufacture to increase impact strength without dramatically reducing thermal performance - making an ideal product for use in flat roofs.

Furthermore, Krimpact™ technology gives you a consistent density slab. This ensures better long-term compressive strength, high impact resistance, better thermal performance and a thinner, lighter product compared to other high-strength insulation options.

Application

Krimpact Flat Roof Slabs are for the thermal insulation of flat roofs. Krimpact Flat Roof Slabs are suitable for use under all kinds of single ply membrane, hot applied bitumen systems and mastic asphalt.

  • Krimpact Flat Roof Slab has high compressive strength, where some occasional loading and impact resistance is required.
  • Krimpact Flat Roof Slab Extra is for use where optimum long term compression performance is required.
Rocksilk Krimpact Flat Roof Slab
Performance

Thermal Peformance

Krimpact Flat Roof Slabs have thermal conductivities of 0.038 to 0.039 W/mK

Fire Performance

Krimpact Flat Roof Slabs are classified as Euroclass A1 to BS EN ISO 13501-1.

Benefits
  • Excellent thermal performance
  • Superior compression resistance
  • Excellent acoustic insulation
  • Superior fire performance
Downloads

All Krimpact Flat Roof Slabs are suitable for maintenance foot traffic only.

Standards

The Krimpact Flat Roof Slab product range is made from noncombustible inorganic rock wool, defined as mineral wool in BS 3533: 1981, manufactured in accordance with BSI Quality Assurance Standard BS EN ISO 9001: 2000.

Durability

The Krimpact Flat Roof Slab product range is non-hygroscopic and is treated to ensure its water repellency. It is rot proof, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria. Krimpact Flat Roof Slabs are odourless and non-hygroscopic.

Compressive Resistance

  • Krimpact Flat Roof Slab has a compressive strength of 60 kPa
  • Krimpact Flat Roof Slab Extra has a compressive strength of 90 kPa

Environmental

Krimpact Flat Roof Slabs are free from CFCs, HCFCs and any other material with ozone depletion potential in their manufacture and content and represent no known threat to the environment.

Krimpact Flat Roof Slab’s manufacture has a low impact on the environment and is classified as Zero ODP and Zero GWP.
 

Handling and Storage

Krimpact Flat Roof Slabs are easy to handle and install, being lightweight and easily cut to size.

All Krimpact Flat Roof Slab products are supplied on non-returnable wooden pallets wrapped in a polythene shroud for temporary protection during transit and on site. For longer term external storage (stock or site) the pallets should be stored under a secure waterproof covering.

Krimpact Flat Roof Slab should not be left permanently exposed to the elements.

Product Data

Krimpact Flat Roof Slab

Thickness (mm) Thermal conductivity (W/mK) Thermal resistance (m2K/W) Length(mm) Width(mm) Slabs per Pack
165 0.038 4.30 1800 600 14
150 0.038 3.90 1800 600 16
145 0.038 3.80 1800 600 16
130 0.038 3.40 1800 600 18
110 0.038 2.85 1800 600 20
100 0.038 2.60 1800 600 24
80 0.038 2.10 1800 600 30
75 0.038 1.95 1800 600 32
50 0.038 1.30 1800 600 48

All dimensions are nominal

Krimpact Flat Roof Slab Extra

Thickness (mm) Thermal conductivity (W/mK) Thermal resistance (m2K/W) Length(mm) Width(mm) Slabs per Pack
120 0.039 3.00 1800 600 20
110 0.039 2.80 1800 600 20
100 0.039 2.55 1800 600 24
80 0.039 2.05 1800 600 30
75 0.039 1.90 1800 600 32
70 0.039 1.75 1800 600 32
50 0.039 1.25 1800 600 48

All dimensions are nominal

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