ISB Intumescent Slab/Batt comprise a slab coated both sides with an Intumescent ablative coating. The slab is rigid with high stiffness, very little or no flexing and allows for easy cutting. The surfaces are firm and suitable for painting and the whole board is highly resistant to delaminating.
The slab meets the requirements of BS476. The rock mineral wool which constitutes the majority percentage of the slab has an extremely high melting point.
In a fire the slab/batt will emit negligible quantities of smoke and fumes. The slab is rot proof, odourless, non-hygroscopic, do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
The use of rock mineral wool products may result in lower building insurance premiums compared to plastic foam insulants.
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Where the slab/batt is in a wall situation, just cut the slab/batt to fit into the opening adhering with the adhesive supplied, ensuring that Envirograf Wraps are fitted around any PVC, copper or steel pipes and PVC electrical trunking. For steel electrical trunking fit pads inside where passing through the slab. For cable trays, then use Envirograf Product 29 cable tray pillows.