Fire Stop Blocks
Fire and smoke stop blocks for apertures in buildings, especially the flutes of trapezoidal formwork.
PRODUCT
AIM Fire Stop Blocks are made from high density Rockwool stone wool. Incorporated into the building during construction, they are used to seal apertures and are permanently held in place by compression. They can also be used within metal cladding as a fire break and to protect the top flange of steel beams. AIM Fire Stop Blocks are predominantly supplied as trapezoidal sections. Square cut, rectangular or round sections are also available.
APPLICATIONS
Used to seal imperfections of fit within the
construction and maintain fire compartment lines.
Predominantly supplied as trapezoidal sections,
square cut, rectangular, round or sinusoidal sections
also available.
Applications
- Composite Flooring Profiles
- Dovetail Composite Flooring Profiles
- Metal Decking, Roofing and Cladding
Fire Stop Blocks are designed for use in trapezoidal formwork (metal decking) typically at the head of a wall (as shown in the illustrations)
Fire Stop Blocks may be used elsewhere in a building and may require approval, for example filling holes within a building.
AIM Fire Stop Blocks can be used at the head of a partition wall if the head track is fastened to the metal deck.
FEATURES
- Simple to install – no tools required.
- 1 and 2 hour fire rating.
- Ablative / pre-painted option available.
- Manufactured to any profile or customers dimensions.
- Up to 1200mm long.
- Available for metal deck profiles of up to 225mm deep.
BENEFITS
- Maintains fire compartment lines.
- A barrier to the movement of smoke.
- Contributes to acoustic performance of the wall or partition.
- Many profiles CNC Cut for ultimate accuracy especially for profiles with rounded shoulders.
- Compression fit so no mastics or sealants required for most applications.
- Tested to the principles of EN 1366-4.
Showing dovetail blocks above steel beam
PHYSICAL INFORMATION
• Minimum block length: 100mm
• Maximum length = 1200mm
• Minimum block height = 10mm
• Max block height = 225mm
• Dimensions to suit the profile / width of the wall
• Tested to the principles of EN 1366-4 in composite metal decking
The AIM Fire Stop Blocks can be manufactured to suit any metal decking profile. In many instances we already hold detailed data regarding the specification of leading brands of metal deck.
If this information is not available we can also manufacture blocks to the customers specification for this option we will need the following dimensions:
We will also need to know if your customer requires a special length of block (i.e. to match the with of a wall or partition) or if a specific fire rating is required.
Majors and minors:
The minor block sits above the major block to fill the dovetailed web stiffener. (Sometimes this minor void is completely filled with an intumescent mastic)
Large and small flute:
Viewing the profiled decking from the panels end; the larger of the trapezoids is the large flute, (the smaller being small flute). Either large or small flute may be required depending upon which way up the decking is laid.
Ancillaries
AIM Fire Stop Blocks are often used in conjunction with:
• AIM Fire Stop Strips which are used as a deflection head detail with masonry walls.
• AIM Acoustic Trough Infills where perforated metal sheeting is used as to form a roof structure and the flutes require an acoustic filler.
Advance Manufacturing Capability
AIM’s investment in CNC Wire Saw technology enables the manufacture of Fire Stop Blocks to suit almost any metal deck profile irrespective of the complexity of the design.
The Fire Stop Blocks are manufactured using the CAD details from the metal deck manufacturer. The cutting process then faithfully follows the exact outline of the metal deck profile, including any stiffners or other design features.
This capability can be applied to a variety of insulation materials but typically, for Fire Stop Blocks this is primarily Rockwool Stone wool or Rockwool Ablative Coated batts. AIM’s CNC Wire Saw Cutting technology can also be adapted to the manufacture of fire stop blocks to sinusoidal profiles or other, bespoke metal sheet patterns. The resulting fire barrier may require the approval of a competent person where a specific fire performance is required.
Range of Ablative coated batt fire stop blocks
AIM Ablative Fire Stop Blocks are ideal for applications where aesthetics or fibre migration are a concern. Used to close the flutes above internal fire rated walls and partitions they maintain the fire compartment line and provide a high acoustic performance (up to 34dB / single layer) when sealed
around their perimeter (on both faces) with Rockwool Acoustic & Intumescent Sealant. Ablative Fire Stop Blocks are cut using CNC technology ensuring their accuracy making the installation faster and tidier than conventional straight sided trapezoidal sections.
OPTIONS: LINEAR FIRE STOP BLOCK
AIM Linear Fire Stop Blocks are used in composite panel constructions where a compartment line needs to be extended through the panel.
AIM’s CNC Wire Saw enables the production of a linear fire barrier that is effectively the combination of several Fire Stop Blocks and a Fire Stop Strip into a single item.
Super Fire Stop Strip and Fire Stop Block install
A COMBINED SOLUTION FOR FLAT ROOFING
Where a fire wall is built to the underside of a
perforated metal deck, AIM Fire Stop Blocks should
be installed above and below deck at the line of the
wall to ensure that smoke or fire is prevented from
passing through the perforations in the metal work.
AIM Fire Stop Strip can also be used to remove any
imperfections in the head of the wall to the underside
of the metal deck.
AIM Acoustic Trough Infills are then used across
the metal deck, to assist with the reduction of noise
reverberation from within the building.
The performance of the AIM Fire Stop Block is dependent
on the metal deck remaining stable in a fire situation and
should be assessed by a competent person.
AIM Fire Stop Blocks, Fire Stop Strips and Acoustic Trough Infils
TECHNICAL INFORMATION
FIRE PERFORMANCE
The product achieves Euroclass A1.
Fire Rating (Integrity / Insulation)
Tests Conducted in a composite metal deck with masonry below
Metal Deck Profile Standard 100mm Standard 125mm Ablative 60mm*
C19 120/60 120/120 120/120*
CF80 120/60 120/120 120/120*
CF225 120/60 120/120 N/A
* To be sealed in situ using AIM Acrylic Intumescent Mastic.
They are installed under compression (minimum 5% compression required).
Fire Stop Blocks may be used elsewhere in a building but will require approval.
Can be used at the head of a partition if the head track is fastened to the metal deck but should be approved by a Fire Engineer or Building Control.
ACOUSTIC PERFORMANCE
AIM Fire Stop Blocks provide at least 18dB RW sound reduction. The acoustic performance of the floor and wall systems must also be considered when assessing the room-to-room sound reduction figure.
100mm long block = 18dB RW
140mm long block = 23dB RW
Air leakage
AIM ablative coated fire stop blocks provide a robust solution to air leakage requirements. These are available to suit most major cladding and decking profiles. In such instances, to prevent fibre migration from the stone wool, AIM intumescent mastic must be used to seal the perimeters of the Fire Stop Block.
TEST REPORTS
WF 521746
Z11012 – Acoustic Performance. EN ISO 10140-2.
Air leakage
AIM ablative coated fire stop blocks provide a robust solution to air leakage requirements. These are available to suit most major cladding and decking profiles. In such instances, to prevent fibre migration from the stone wool, AIM intumescent mastic must be used to seal the perimeters of the Fire Stop Block.
TEST REPORTS
WF 521746
Z11012 – Acoustic Performance. EN ISO 10140-2.
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.
APPLICATION DETAILS
Showing Dovetail blocks above a masonry wall
Showing Dovetail blocks above a masonry wall
Showing Major and Minor blocks above a masonry wall
Showing Dovetail blocks above a masonry wall
More drawings available in the Technical Guide which can be downloaded above.
INSTALLATION GUIDELINES
AIM Fire Stop Blocks are push fitted into place; they must fit tightly and completely. Dovetail fire stops are supplied as rectangular blocks, which are pinch fitted into the profile, then pushed into place.
ITEMS REQUIRED FOR INSTALLATION
• PPE abrasion resistant gloves
• PPE impact resistant goggles
• RPE dust mask
STORAGE
Products are supplied in cartons and on wooden pallets with edge protection and a shower proof hood. 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. They do not degrade under the usual conditions found in buildings and will perform effectively for the life of the building.
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
The stonewool element of the products originate from Rockwool UK. It may be possible to recycle clean and uncontaminated material under Rockwool UK’s Rockcycle® service. Please contact Rockwool on
01656 868400 for further details.
ORDERING
To order this product the following information will be required: • The manufacturer and reference for the metal deck. Typically a metal deck reference will be along the lines of: Wards MD60, Corus CF70, SMD TR60, Rigidal 20/100/1000 and similar
• If this information is not available we can also manufacture blocks to your customers specifications; for this option we will need the following dimensions:
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 [email protected]
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 ASFP.
AIM working in partnership with Rockwool.