• ROCKWOOL® SP Firestop Systems
Fire protection solution for curtain wall joints
- General Details
As part of the comprehensive FirePro® range of fire protection products, ROCKWOOL SP Firestop Slab is a product specifically designed to form cavity fire stops within buildings.
It may be installed horizontally or vertically and is suitable for cavity widths between 50mm and 400mm in both masonry and curtain wall constructions.
For cavity widths of 250mm or more, joints between adjacent lengths of firestops should be sealed on the top surface with aluminium foil tape.
The product has been designed as a one-piece system and affords easy cutting and installation. It provides a unique lateral compression to facilitate tightness of fit.
The product is available in two versions:
SP60 Slab – 1 hour fire resistance. SP120 Slab – 2 hours fire resistance.
Advantages
- Easy to cut and install
- Ensures site tolerances are accommodated
- Tested over 2 hours fire resistance
- Resists the passage of smoke
- Suitable for cavity widths up to 400mm
- Easy site storage and handling
- Quality assured to BS EN ISO 9001
- Technical Info
Standards and approvals
ROCKWOOL SP60 and SP120 Firestop Slabs have been tested and assessed in accordance with BS 476: Part 20: 1987 and have achieved 60 minutes and 120 minutes respectively for both integrity and insulation, as detailed in LPC assessment CC89697.
ROCKWOOL SP60 and SP120 Firestop Slabs comply with the provisions of Approved Document B3 of the 1991 Building Regulations (2002 Edition).
SP Firestop Systems are third party approved by the Loss Prevention Council Certification board (LPCB) for performance and quality and are listed in the “Red Book” – Certificate no. 022b. Certificates can be accessed online at www.redbooklive.com.
Performance
Non-combustibility
The base mineral wool of ROCKWOOL SP60 and SP120 Firestop Slabs are inherently fire safe and achieve Euro Class A1. ROCKWOOL products will withstand temperatures in excess of 1000°C without melting.
Acoustic
ROCKWOOL products have excellent acoustic properties and can appreciably reduce the levels of airborne sound transmission through wall and floor cavities.
Resistance to moisture
ROCKWOOL SP60 and SP120 Firestop Slabs are water repellent and unaffected by the freeze/thaw cycle.
Applications
Fire resistance between the edge of a concrete floor slab and curtain walling which is stable in fire.
ROCKWOOL SP60 and SP120 Firestop Slabs provide one and two hours fire resistance respectively in voids up to 400mm wide.
Note that curtain walling systems should be adequately restrained to the floor.
Figure D illustrates a typical arrangement, using SP Fixing Brackets at 500mm centres.
Masonry wall cavities
ROCKWOOL SP60 and SP120 Firestop Slabs provide 1 and 2 hours fire resistance respectively in masonry wall cavities up to 400mm wide. They can be used both horizontally and vertically.
Figure E illustrates typical applications, with the product fitted tightly between masonry leaves. When it is not possible to build the brackets into a leaf, the fixings can be re-profiled as necessary and mechanically fixed to the face of the masonry.
The installation of ROCKWOOL SP Firestop Slabs is the responsibility of the site contractor. Fixing sequence instructions are shown clearly on each pack as well as cutting guide lines on the surface of each slab.
External cladding
Where used in conjunction with profiled metal cladding, cut the ROCKWOOL SP Firestop Slab to suit the profile allowing 15mm for compression.
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