Archetech Issue 64 2023 | Page 55

We manufacture the largest range of passive fire products including :

Because pipes , cables , ventilation ducts and other services sometimes need to pass through a hollow plasterboard or lath & plaster ceiling we have introduced new variants of our successful FIROBLOK ® range of fire protection sleeves .

Designed specifically for plasterboard or lath & plaster ceilings , these new products have a metal encasement under the reinforced foiled cloth which also serves as a hinge , enabling the sleeve to open up for fitting around existing services . Once , fitted , the adhesive tag is peeled off to seal the two halves together .

Fixing tabs are used to secure the sleeve with screws or toggle bolts as appropriate .

Following the growth in popularity of using metal back boxes in hollow plasterboard walls , we fire tested various combinations of metal boxes , extenders and gaskets in a hollow plasterboard partition wall to ensure that fire integrity of the wall was maintained . Some boxes were mounted flush with the face of the plasterboard and others were set back .

These are the combinations tested :

SOME SAMPLES WERE FIXED TO THE WALL SURFACE INSIDE THE FURNACE ...

A B C D E

A - 47mm double socket + 1x25mm extender + gasket , mounted flush B - 47mm double socket + 2x25mm extenders + acoustic sponge gasket , set back C - 47mm double socket + acoustic sponge gasket , mounted flush D - 47mm single socket + gasket , set back E - 47mm double socket + gasket , mounted flush F - 47mm double socket + gasket , mounted flush G - 47mm single socket + gasket , set back H - 47mm double socket + acoustic sponge gasket , mounted flush

... OTHERS WERE FIXED TO THE WALL SURFACE OUTSIDE THE FURNACE

The samples achieved 90 minutes when tested to EN1364-1 2015

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