Product description

Fire compartmentation is essential within an effective fire prevention strategy. The SP FireStop Plus Slab® is part of the innovative ROCKWOOL SP FireStop System. A one-piece system, it is designed to form cavity fire stops within buildings and provide critical resistance.


The ROCKWOOL SP FireStop Plus Slab forms part of a special fireproof insulation solution. The ROCKWOOL slabs offer a unique lateral compression to facilitate a close fit between substrates within masonry or curtain wall constructions. Providing confidence, the SP FireStop System has been tested in conjunction with the AnconOptima Masonry Support System where the Masonry Support System penetrated the SP 60 FireStop Slab. As a medium density stone mineral wool insulation slab, it features foil facing to both sides as well as useful cutting lines to support accurate installation. The ROCKWOOL SP FireStop Plus Slab can be installed horizontally or vertically and is suitable for large cavity voids and also with a rainscreen façade. Importantly, it can achieve a fire resistance rating of up to 2 hours in voids of up to 600mm.



SP FireStop System has been tested and assessed to BS 476: Part 20. BS EN 1366-4: 2006 and classified to BS EN 13501-2. / SP FireStop System is third party approved with LPCB – certificate no. 022b. / Authorised for use in LUL surface and sub-surface premises (LUL Ref: 2244).

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