Masonry fire performance redefined with AIM zero compression barrier
Iain Hoey
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AIM introduces zero compression cavity barrier for masonry fire performance
AIM – Acoustic & Insulation Manufacturing has announced that its Wall Cavity Barrier (Red Edition) has been tested to provide fire performance in masonry construction without compression.
According to AIM, the barrier acts as a fire and smoke barrier for cavity walls and provides a closed line of protection along compartmentation divisions.
The company said the barrier is designed for use in different construction types, including masonry and steel frame systems.
It explained that thickness options of 75mm, 100mm and 125mm correspond to fire ratings of 30, 60 and 120 minutes to BS EN 1366-4.
Application and installation process
AIM reported that zero compression installation is applicable to masonry construction only.
The company noted that testing covered both horizontal and vertical applications for use within voids up to 400mm.
It added that the barrier is positioned first, with bricks then built against the edge before mortar is set.
Once set, AIM stated that its Acrylic Intumescent Mastic should be applied between the barrier and both substrates.
The organisation confirmed that a separating damp proof course layer can be included where required.
Technical performance and sound reduction
AIM outlined that the product is a high-density foil faced stone wool barrier.
It said the barrier also reduces airborne sound transmission by a minimum of 21dB RW.
The company added that this acoustic benefit complements the fire and smoke containment properties of the barrier.
It reported that the barrier has been evaluated as a slab version to allow installers to size it precisely for the cavity.
According to AIM, this removes the need for cut barrier installation and provides greater flexibility on site.
Statement from AIM Commercial Director
Ian Exall, Commercial Director at AIM, said: “Tests have demonstrated that the AIM Wall Cavity Barrier is effective without compression in masonry voids, a significant product enhancement that offers far greater flexibility during construction.”
Supporting materials and guidance
AIM explained that installation information is available in its Wall Cavity Barrier (Red Edition) Technical Guide.
The company confirmed that the document includes a step-by-step guide for installers.
It noted that the guide can be downloaded from its website.
The organisation said the barrier is part of the wider range of fire, thermal and acoustic solutions it manufactures.
About AIM
AIM is part of the Performance Technology Group.
The business has more than 30 years of experience in designing, testing and manufacturing barriers.
It produces both bespoke insulation products and standard systems.
The company confirmed that its UK operations continue to focus on fire, thermal and acoustic safety solutions.
Relevance for fire and safety professionals
The announcement provides details on a tested fire barrier product for masonry cavity walls.
Fire safety professionals involved in specification may need to review the product’s performance ratings to BS EN 1366-4.
The installation process, including use of mastic and optional damp proof separation, may affect site practices and inspections.
The acoustic properties of the barrier may also be relevant for projects where both fire and sound performance are required.
AIM introduces zero compression cavity barrier for masonry fire performance: Summary
AIM – Acoustic & Insulation Manufacturing has introduced its Wall Cavity Barrier (Red Edition) for masonry construction.
The barrier provides tested fire performance without compression.
It acts as a fire and smoke barrier in cavity walls.
Thickness options of 75mm, 100mm and 125mm deliver 30, 60 and 120-minute ratings to BS EN 1366-4.
Zero compression installation applies to voids up to 400mm.
The barrier reduces airborne sound transmission by at least 21dB RW.
The product is available in slab form for flexible sizing.
Installation guidance is detailed in AIM’s technical guide.
AIM is based in the UK and is part of the Performance Technology Group.
The company has more than 30 years’ experience in fire, thermal and acoustic barrier manufacturing.