The Difference Between A1S Group Fire and Smoke Curtains and Fire Shutters.
The Difference Between A1S Group Fire and Smoke Curtains and Fire Shutters.
For those not used to procuring these two distinct fire rated products, we thought it would be helpful to post a simple guide. Of course, procurement of fire curtains, fire and smoke curtains, smoke curtains and fire shutters can be a complex area. We advise that guidance is always taken from your Building Control, Design Team, and Fire Strategist – and of course with our significant project experience, we are always here to help.
1) Components
The first obvious difference between fabric fire curtains, fire and smoke curtains, smoke “only” curtains and fire shutters is the component build. Whilst both product ranges share commonalities, particularly as both are motorised and are generally activated by an alarm signal and generally descend within guide channels, a fire shutter is manufactured from, in our case 76mm curved solid galvanised steel lath. Curtains are manufactured from a range of tested fabrics, usually a heavyweight glass fabric which is reinforced with stainless steel wire, coated with a formulated fire-retardant aluminium pigmented polyurethane or intumescent fire-retardant silicon elastomer .
A1S Group fire curtain and fire shutter specifications and drawings are available at https://a1sgroup.com/specifications-and-drawings
2) Performance
Fire shutters are available with 1-, 2-, and 4-hour integrity and have been fire tested to BSEN 1634-1. Fire curtains are available with 1- and 2-hour integrity and additionally our Flameshield fire curtain range provides 85 minutes before breaching 15 kw/m2 radiation for the unexposed side of a curtain. Neither product is sold with insulating properties. Fire curtains provide smoke compliance to BS EN 1634-3 with the inclusion of specialist smoke seals and as such make the product suitable for protecting means of escape. Smoke seals are burnt as part of the fire testing to confirm integrity of the whole product. Smoke compliance is not available with a fire shutter range because of ingress between the curved lath section. A fire shutter can provide a degree of physical security when in the closed position. Fire and smoke curtains are designed to sit within their headbox and only become operable during fire conditions or on receipt of an alarm signal. For more detail, please see :
Link: https://firecurtain.co.uk/
Link: https://fireshutter.co.uk/
3) Standards
It is a legal requirement that fire shutters are manufactured under harmonised European standard BS EN 16034 and BS EN 13241. Our Flameshield range benefits from being the first tested to multiple substrates in the UK under this now required CE markable, and is approved for masonry, blockwork, structural steel and flexible stud systems.
Our Flameshield fire curtains are offered to BS 8524-1, BS EN 1634-1 as well as BS EN 1634-3 and we are finalising CE marking as despite preference for BS 8524 by many Building Controls in the UK the general direction of travel is for a CE marked fire curtain under BS EN 16034. Smoke “only” curtains are offered under the harmonised European Standard BS EN 12101. All of our fire testing is carried out by Warrington Fire, and we hold third party certification for both manufacture of fire curtains and installation of fire and smoke curtains under International Fire Consultants SDI 05 and SDP -11 02 Scheme.
4) Design
We host all indicative drawings across our product range at : https://a1sgroup.com/specifications-and-drawings
Both fire curtains and fire shutters benefit from internal tubular motors contained neatly within the head box. Fire shutters can also have external motors, generally where larger sizes are required. It is readily noticeable that fire shutters have larger head boxes which give fire curtains the edge when headroom is restricted. Permissible parameters for both ranges are available above. Likewise, both product ranges are available to be fitted to your structure either face fix or reveal fix. Indicative product weights are 22kg per linear metre for single vertical fire curtains, 36kg per linear metre for overlapping systems, and 35kg/m2 for fire shutters. Our testing documentation requires that all designed structures are load bearing to the above and have a fire performance equal to or greater than the performance required by our product. Fire curtains are also available as “horizontal” products to protect atria, light wells, escalators, and stairs from fire. Extended applications to BS 15269-10 and BS 15269-11 as well as product assessments from Warrington give further detail on structural requirements.
5) Applications
Fire and smoke curtains and fire shutters should be specified by trained and competent professionals. Broadly speaking fire shutters are used to provide integrity when there are openings in walls, for boundary protection and for compartmentation. Smoke only curtains are used to channel smoke, usually in conjunction with a ventilation system. Fire and smoke curtains can be used for, protected means of escape, egress and corridor separation, boundary protection, compartmentation, openings in walls and lift and lift lobbies.
For further information on our range of fire curtains, fire and smoke curtains and fire shutters, or any costing requirements, please contact :
info@a1sgroup.com
A1 Shutters Limited assume no responsibility or liability for any errors or omissions in the content of this site. The information contained in this site is provided on an "as is" basis with no guarantees of completeness, accuracy, usefulness or timeliness. Analysis of product properties and their suitability for any given application should always be undertaken and confirmed by competent professionals.