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Product
An unfaced or polyethene enclosed stone mineral wool slab bonded to a polythene DPC intended for vertical applications.
| Features | Benefits |
|---|---|
| Suitable for external cavities up to 190mm wide | Wider cavities give a greater design scope |
| Assessed to BS 476-20:1987 & BS 476-22:1987 for up to 120 mins fire integrity | Suitable for vertical applications, MP557 prevents the spread of fire and smoke in all three directions at a party wall junction |
| Closed state barrier | Assists in reducing flanking sound transmission between properties |
| Choice of finishes: unfaced or polythene enclosed | The polyethene enclosure prevents water ingress into the mineral wool during installation |
| Integral DPC | Prevents moisture transmission across the cavity |