Horizontal Fire Closer
A barrier that prevents the vertical passage of fire and sound in external wall cavities.
PRODUCT
The AIM Horizontal Fire Closer is a semi rigid Rockwool stone wool insulation laminated to a polythene DPC. It has been designed to provide up to two hours resistance to the spread of fire within a cavity that is adjacent separating floors within multi story buildings. It also significantly reduces flanking sound transmission within external wall cavities.
APPLICATIONS
The AIM Horizontal Fire Closer has been designed
to provide up to two hours resistance to the spread
of fire within a cavity that is adjacent to separating
floors within multi story buildings. It also significantly
reduces flanking sound transmission within external
wall cavities.
The Horizontal Fire Closer is supported with test
evidence to show its performance in cavity walls
constructed from a variety of different substrates
including masonry, timber frame structures and SFS /
through wall systems.
FEATURES
- A section of Rockwool Stone Wool insulation laminated to a Polythene DPC.
- DPC Polythene conforming to BS 6515
- Stone wool and DPC dimensions to suit most external wall cavity sizes.
BENEFITS
- Up to 2 hours fire resistance.
- Prevents spread of fire past separating floors
- Reduces flanking sound transmission within external wall cavities adjacent to separating floors
- Test evidence that supports the use within a wider range of substrates
* For cavities in excess of 100mm, please use the AIM Wall Cavity Barrier complete with Polythene DPC
Example product installation schematic using materials by others
COMPONENTS AVAILABLE FROM AIM
Barrier
Fixing Clip Two fixing clips per length of barrier
PHYSICAL INFORMATION
- Thermal Conductivity: λ = 0.034W/mK
- Complies with Part E of the Building Regulations
- Fire resistance performance of up to 2 hours’ insulation and integrity when installed with clips
- Rockwool stone wool insulation
- Length: 1200mm
- Width: 260mm – bespoke widths available upon request.
- Thickness (mm): 50, 65, 75, 90, 100 – bespoke thicknesses available on request.
- DPC Polythene
- DPC Length: 1300mm
- DPC Width: 600mm
- DPC Overlaps: Top – 300mm, Bottom – 40mm, End – 100mm
- The Rockwool insulation used for the Horizontal Fire Closer, is pre-compressed to enable it to take up any minor irregularities in the substrates.
- Packaging: AIM Horizontal Fire Closers are generally packed into cartons and stretch wrapped onto wooden pallets with a showerproof polythene pallet cover and high quality edge protectors.
AS STANDARD
AIM Horizontal Fire Closer is supplied pre-cut in
1200mm lengths, 260mm wide and thicknesses
depending on the fire rating required. The product
supplied is as required to fill the void.
The pre-cut product is supplied with the required
fixing clips
TECHNICAL INFORMATION
FIRE PERFORMANCE
The product has been tested to BS EN 1366-4 to provide up to 120 minutes integrity and insulation.
Fire Rating (Integrity / Insulation)
- all horizontal and vertical use
Cavity width 100mm
| Application | Integrity / Insulation |
|---|---|
| Masonry to Masonry | 120/120 minutes |
| Masonry to Softwood | 60/30 minutes |
| Masonry to OSB | 60/60 minutes |
| Masonry to CP Board / SFS | 60/60 minutes |
ACOUSTIC PERFORMANCE
AIM Horizontal Fire Closer may be used to reduce
the passage of flanking sound through external wall cavities.
It complies with Approved Document E to the
Building Regulations and provides at least 23db Rw
(minimum 140mm bearing). It also helps in meeting
the requirements of Robust Details..
TEST REPORTS
WF 432745 = Masonry
WF 399452 = Timber & SFS
WF 414885 = Timber & SFS
Z11012 – Acoustic Performance – Testing on mineral
fibre insulation. To BS EN ISO 10140-2.
APPLICATION DETAILS
More drawings available in the Technical Guide which can be downloaded above.
INSTALLATION GUIDELINES
The AIM Horizontal Fire Closer should be installed in
the external wall cavity at the level of the separating
floor. The closer is installed with the wide DPC overlap
uppermost, as indicated in the illustrations with the
DPC embedded into the inner blockwork in the
mortar layer above the closer, so as to form a cavity
tray. When used with a sheathing board, the DPC
should be dressed behind the breather membrane.
Horizontal Fire Closer are designed for use in cavities
up to 100mm (for 100mm+ use WCB with DPC).
They have been tested vertically and horizontally to BS EN 1366-4.
They are installed under compression (minimum 5% compression required).
They should be installed with fixing clips
Non-standard sizes and DPC offsets are available
ITEMS REQUIRED FOR INSTALLATION
• PPE abrasion resistant gloves
• PPE impact resistant goggles
• RPE dust mask
• Drill
• Screwdriver
• Tape measure
STORAGE
Products are supplied in cartons on wooden pallets
with edge protection and a shower proof hood.
Orders can be supplied without cartons on request.
Products should be stored away from the elements
until ready for installation.
MAINTENANCE
This product does not contain moving parts and,
if undisturbed in the cavity, requires no routine
inspections or maintenance.
It is recommended that the integrity of the barrier is
rechecked if further works are carried out, which may
involve disturbing the product.
DURABILITY
AIM fire barriers are chemically inert, will not sustain vermin and do not encourage the growth of rot, fungi, moulds or bacteria. They are compatible with all normal building materials. Rockwool stone wool has been proven in service for over 60 years, in a wide range of climates and degrees of exposure. It will generally perform effectively for the lifetime of the building, plant or structure.
HEALTH & SAFETY
Insulation products supplied by AIM are considered
to be inert articles and as such are exempt from
requirements to provide a Safety Data Sheet.
A Product Safety and Handling Information Sheet is
available upon request.
ENVIRONMENT
Global warming potential = zero For product recycling please contact: Rockwool T: 01656 868400 E: recycling@rockwool.co.uk
ORDERING
To order this product the following information will be
required:
• Cavity depth in mm
• Fire Performance required
• Approximate quantity
• Delivery location
All AIM fire barriers are made to order. Products are
typically supplied in seven to ten working days but
lead times may vary depending on existing factory
commitments.
There is no minimum order quantity or value although
small orders may attract transport surcharges.
TECHNICAL SUPPORT
Technical Support is available from our experienced sales team on 01293 582 400 or sales@aimlimited.co.uk
ABOUT AIM
We are a quality insulation convertor with over 30 years experience in the design, testing & manufacturing of high quality fire barriers for customers worldwide.
Our Partners & Affiliates
AIM are partners with NBS. Our products can be found on NBS Source and have been authored to NBS specification standards and have both CAWS and Uniclass 2015 classifications.
AIM are members of Centre for Window and Cladding Technology & ASFP.
AIM are working in partnership with Rockwool.