Home
Information
downloads
Print page
Enquire Online
Directions
 

Rockwool Fire Barrier

Rockwool Fire Barrier

Rockwool Fire Barrier
Product Description

ROCKWOOL FIRE BARRIER

FIRE CAVITY BARRIER FOR ROOF VOIDS, LOFT AREAS
AND SUSPENDED CEILING VOIDS

  
Download datasheet

METAL AND CONCRETE

Rockwool Fire Barrier

Soffit fixing
When fixing to a concrete soffit, a
continuous clamping angle, size 40 x 60 x 1.5mm or 50 x 50 x 1.5mm, should be attached with M6 minimum expanding bolts anchored at 740mm maximum centres. 5mm diameter bolts and nuts should be used to attach Rockwool Fire Barrier to the clamping strap at maximum 400mm centres.

Fixing options
If direct fixing to a concrete soffit without the clamping strap, M6 expanding bolts at 300mm centres to the soffit should be used. Adjacent barriers should be wired tightly together. Rockwool Fire Barrier should also be draped over the suspended ceiling or wired to the grid. Vertical fixing to a perimeter wall should be made with a 1.5mm clamping strap.

Rockwool Fire Barrier

 

  

 

Roofing - Troughed metal decking
In roof constructions with troughed metal decking, continuously support and clamp the top edge of the Rockwool Fire Barrier to the structure instead of the roof decking to maintain the fire integrity of the construction. Ensure all open spaces are tightly and securely filled, leaving no visible gaps.

Rockwool Fire Barrier

Timber

Rafters - 50mm thick
In roof constructions where the timber is 50mm minimum thick, Rockwool Fire Barrier must be tightly butt jointed and stitched. The clamping strap should be attached with M6 screws or bolts at a maximum 300mm centres.

Rafters - less than 50mm thick. Where the timber is less than 50mm thick, both sides of the truss will require the application of Rockwool Fire Barrier. The clamping straps should be attached with screws at a maximum of 400mm centres.

Transverse to Rafters
When installing Rockwool Fire Barrier transverse to the rafters, a continuous clamping strap must be secured to the underside of each rafter with M6 coach screws, or similar.

Wall Junctions

At the junction of separating and external walls in a timber frame construction, Rockwool Fire Barrier should be used to a depth of 300mm to provide a cavity barrier.

PARTITION HEADS

At the head of a fire rated
partition, M6 coach screws should be used at a maximum of 400mm centres to attach the clamping strap to the head plate.

 

  

 

Rockwool Fire Barrier

LONG DROPS

A drop of up to 6 metres can be achieved using a single length, or
jointing in the manner shown. Subsequent lengths of up to 6 metres must use a clamping angle and strap fixing, suspended on hangers which are fixed directly to the soffit and extending downwards to provide a minimum overlap of 50mm at the junction of the fire barrier.

FLOOR JUNCTIONS

Rockwool Fire Barrier

FIRE RESISTING WALLS

If the Rockwool Fire Barrier is used as a continuation of a fire resisting wall it is advisable that mechanical fixing and clamping strap is used.

PIPWORK DUCTING AND BEAMS

When the area to be treated is penetrated by pipes, ducts or beams.

Rockwool Fire Barrier

Rockwool Fire Barrier should be cut to accommodate the infrastructure and then re-stitched using a minimum 0.5mm wire with a 100mm maximum gap between stitches.

The pipe duct or beam is then sleeved one side for the 30 minute barrier and both sides for the 60 minute barrier, with a 300mm minimum overlay wired to the main barrier.