ARC | ARC Insulation

Welcome to the comprehensive ARC category at Insulation4Less, where innovative insulation and fire-stopping solutions seamlessly meld with unmatched quality. As experts in ARC products, we're here to guide you through various offerings in this category, ensuring your building project meets the highest standards of safety, efficiency, and compliance.

What is ARC Cavity Barrier (150mm)?

ARC cavity barriers are purpose-designed fire-stopping and insulation components used to seal gaps within cavity walls, especially where fire, sound, or moisture may otherwise travel unchecked. The 150mm range caters specifically to walls with wider cavities, common in high-performance or timber frame builds. These products include cavity stop socks, timber barriers, party wall solutions, and DPC barriers — all tailored to meet UK Building Regulations and passive fire protection standards.

Cavity Solutions

Cavity Stop Socks and Party Wall Cavity Stop Socks

ARC’s Cavity Stop Socks, available in various colours (Red, Black, Green, Light Blue) and Party Wall Cavity Stop Socks (Red, Black) are pivotal in preventing the spread of smoke and flame within cavity walls. These products, suitable for varying cavity sizes, are crucial for maintaining compartmentalisation in a fire. Choose the appropriate type and size based on the cavity dimensions and specific regulatory requirements of your project.

Timber Cavity Barriers

Timber Cavity Barriers, available in Yellow, Orange, and Red, as well as Timber to Timber Cavity Barrier, provide robust fire and acoustic containment in timber frame constructions. Selecting between the varied options will largely depend on your particular project’s specifications and the desired level of fire resistance.

Party Wall Solutions

From Party Wall Timber Cavity Barriers (TCB) in white to various designs of Party Wall DPC (Vertical, Horizontal, L-Shape), ARC provides solutions that are expertly designed to prevent fire, acoustic, and thermal transmission through party walls. Selection will be contingent on the direction and nature of the wall in question, ensuring compliance with fire safety and building regulations.

Barriers and Fire Stops

T-Barriers

The T-Barriers, whether for Masonry (vertical), Timber Frame (vertical), or Pitched Roof applications, are designed to prevent fire spread and provide effective compartmentation, especially in multi-occupancy and multi-use buildings. They cater to different structural and material requirements of the building.

Spandrel, Rainscreen, and U-Barriers

Choose from a robust selection of barriers like the Spandrel Barrier, Rainscreen Barrier, and U-Barrier, each designed to address specific needs pertaining to fire containment, rain screen cladding systems, or for compartmentalising concealed spaces, respectively. The choice of specific barrier products will hinge on the nature of the wall or cavity it is to be applied.

Fire Stop Solutions

With products like Fire Stop Slab, Fire Stop Full Slab, and Fire Stop Strip, ARC ensures that your building possesses vital fire-stopping at every juncture. Tailoring your choice to your build’s particularities and the local regulatory environment is crucial for compliance and safety.

Closing Solutions

Smart-Closer Series

The Smart-Closer series, which includes the Smart-Closer, Smart-Closer Single Flange, Smart-Closer Plus, and Smart-Closer Plus Single Flange, is crafted to ensure enhanced thermal and acoustic performance in masonry. The diverse array in this series provides varied functionalities, from thermal bridging solutions to fire-stopping in wall cavities, catering to distinct specifications.

Contract-Closer Series and Eco-Closer Series

Contract-Closer (and its Single Flange variant) and Eco-Closer (with variants like Eco-Closer Single Flange and Eco-Closer Plus) series target energy efficiency and robust fire-stopping in varied building configurations. Depending on your sustainability and energy efficiency goals, choose the series that best aligns with your project.

Insulated DPC Solutions

Lastly, delve into insulated DPC solutions like Rockfibre Insulated DPC and Insulated DPC, essential for preventing cold bridging and ensuring thermal continuity in the building envelope. Depending on the thermal and physical properties desired, select the DPC that aligns with your structure’s demands.

Guidance and Selection of ARC Insulation

The array of ARC products available offers broad applicability across different aspects of building and construction, ensuring that fire safety, thermal efficiency, and regulatory compliance are uncompromised. Careful selection based on project-specific needs, building materials, and local regulations is key to utilising these products to their fullest potential, guaranteeing the utmost safety and performance of your build.

Benefits of ARC 150mm Cavity Barriers

• Superior Fire Protection: Intumescent materials and dense mineral wool cores resist the spread of flames and smoke for up to 60 minutes or more.
• Acoustic Performance: Reduces sound transmission between properties or building sections, supporting compliance with Part E of the Building Regulations.
• Improved Energy Efficiency: Blocks airflow and thermal bridging, helping reduce energy loss and improving the building's thermal envelope.
• Damp Resistance: Some ARC solutions double as DPCs (Damp Proof Courses), defending against moisture ingress in party walls and cavity edges.
• Quick & Easy Installation: Pre-formed for cavity widths of 150mm, these barriers are easy to handle and install — ideal for both new builds and retrofits.

Applications of ARC Cavity Barriers (150mm Width)

• Timber Frame Construction: Use in vertical and horizontal cavities to prevent fire spread between structural timber components.
• Masonry Party Walls: Install between attached dwellings to improve acoustic insulation and fire separation.
• Cavity Stops Around Openings: Place around windows, doors, and wall penetrations to contain fire and sound pathways.
• Damp Proofing at Junctions: Combine ARC cavity barriers with DPC variants to block rising moisture in external and internal walls.
• Compartmentation Zones: Suitable for multi-storey buildings where regulation requires clear fire separation between floors and living units.

Why Shop ARC at Insulation4Less?

• All‑in-One 150 mm Cavity Range: No need to mix and match — everything aligns seamlessly.
• Expert Support: Our UK-based team guides you on specification, installation, and regulation compliance.
• Competitive Pricing + Bulk Discounts: Great value for professional and residential projects.
• Fast Delivery & Hassle-Free Returns: Get stocked up and stay building with minimal delays.