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Envirograf 60 Minutes Under Floor Fire Barrier

Brand:
Reference:
E053UF

A fire proof fabric barrier providing 60 minutes integrity and insulation, It fits between joists and over the top of plasterboard or lath-and-plaster ceilings, giving full fire protection to floorboards and any insulation materials and cables above.

The UF60 under-floor barrier was installed in a ceiling/floor without any plasterboard or lath-and-plaster (just the barrier itself) and tested to BS476 Part 21 (1987), achieving 60 minutes integrity, insulation, and load-bearing.

£21.34 (tax excl.)
£21.34 (excl VAT)
£25.60 (incl VAT)
Dimensions
Description

About 60 Minutes Under Floor Fire Barrier

The barrier consists of graphite-impregnated cloth, covered with a reinforced Kraft paper and sealed. The graphite-impregnated side faces downwards and outwards on the sides folded up the joists and this expands in a fire, sealing any void between the barrier and the joists.

Metal fixing plates 30mm x 50mm with a hole drilled in the middle are used to fasten the barrier to the joists with 30mm galvanised clout nails (nails not supplied).

When ordering under-floor fire barrier, the width measurement required is the width between the joists plus 100mm, as there must be a 50mm fold of the barrier fitted to the joist on each side. For example, if width between joists was 400mm, then you would need to order a barrier with 500mm width.

Application

The under floor fire barrier is layed on top of the ceiling. Allow for a 50mm up each side of joist (e.g. if the gap between the joists is 400mm, a 500mm wide under floor barrier is required). 12 long fixing washers are supplied for fixing every 300mm apart per barrier. Individual sections of the barrier should be overlapped by 50mm.

For acoustic requirement to U value and to meet Document E (H in Scotland) a 40mm thick sponge can be supplied for the width between the joists – simply push into place between joists once the barrier is fitted.

Product Features
E053UF
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FAQS

questions Morton & Hall Consulting Ltd
Question: 

A existing timber floor between flat and a shop, 44 x 150 timber joists at 400mm centres with two layers of 12.5mm plasterboard under. Can the barrier be set between the joists and then 100mm rockwool (or other insulation) set over and then 22mm chipboard set over. We need to achieve 60 minutes fire resistance between the shop and flat over. Thanks

Answer: 

UF 60/500 will provide 60 minutes fire protection and UF104/500 will provide 104 minutes fire protection.

Under floor fire barrier UF60 is made from graphite impregnated cloth, covered with a reinforced Craft paper. Giving 60 minutes fire & insulation protection.

UF104 is made the same but has a wire mesh inside the unit as added support, approximately 5mm thick. Standard lengths are 1800mm long. Standard width 400mm, 450mm, 500mm and 600mm.

Other lengths & widths made to order.

The under floor fire barrier is layed on top of the ceiling. Allow for a 50mm up each side of joist ie gap between joists 400mm, so 500mm under floor is required. 12 long fixing washers are supplied for fixing every 300mm apart per barrier & overlap by 50mm.

For acoustic requirement to U value and meet Document E ( H in Scotland) a 40mm thick sponge is supplied for the width between the joists.

See links below:

https://hspfireprotection.co.uk/floor-ceiling-wall-protection/1472-envirograf-60-minutes-under-floor-fire-barrier.html

https://hspfireprotection.co.uk/floor-ceiling-wall-protection/1395-envirograf-100-minutes-under-floor-fire-barrier.html


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