Cavity Closers 100mm | Cavity Closers | 100mm Cavity Closers

Welcome to the comprehensive realm of Cavity Closers 100mm at insulation4less, where quality meets practicality in safeguarding your structures against elements and providing robust insulation and fire protection. Our collection exclusively features products from renowned vendor, TIMLOC, ensuring a premium range that epitomises efficacy and durability.

Thermo-Lok FRSTOP and 60 min Fire-Rated Cavity Closers:

• FRSTOP 60 min Fire-Rated Cavity Stop Sock: Specialising in providing a potent fire barrier within cavity walls, this product is apt for scenarios that demand high fire-resistance.
• 60 min Fire-Rated Check Reveal Cavity Closers: Inclusive of a Check Reveal, it aids in mitigating heat transfer and sound transmission while providing a robust fire break.

When implementing fire-rated solutions, consider the specific fire-rating and structural needs of the project to select the appropriate product.

Platinum Plus Range:

Check Reveal Cavity Closers: Offering both plain and check reveal options, these closers are ideal for ensuring thermal efficiency while facilitating an aesthetically pleasing window and door reveals.

Multi Cavity Closers: Offering a versatile approach to insulating and protecting varied cavity sizes with enhanced thermal performance. Available both in single units and packs of 10 for larger projects.

This range serves well in contexts where varied functionalities like thermal insulation, damp prevention, and aesthetic alignment are pivotal.

Platinum Plus FX Range:

Check Reveal and Multi Cavity Closers: Beneficial for applications seeking a combination of precise insulation, a neat finish on window and door reveals, and versatility in dealing with diverse cavity sizes.

50mm - 100mm Multi Cavity Closer: Tailored for larger cavities, ensuring maximal thermal insulation while preventing cold bridging effectively.

Consider the FX range for advanced, precision-based insulation requirements, particularly where varying cavity sizes are present.

Making the Right Choice

• For Stringent Fire Safety: Opt for Thermo-Lok’s fire-rated options to affirm a robust fire barrier in your structures.
• For Versatile, Comprehensive Insulation: The Platinum Plus range, with its varied offerings around Check Reveal and Multi Cavity options, caters to a plethora of insulation demands.
• For Tailored, Precision Insulation: Leverage the Platinum Plus FX Range to fulfil specific insulation needs, with a special focus on accommodating diverse cavity sizes.

Benefits of a 100 mm Cavity Closer

• Thermal efficiency – Cuts cold bridging and helps meet UK Building Regulations Part L energy targets.
• Moisture protection – Built-in DPC stops rain and condensation from penetrating around frames.
• Faster installation – Pre-cut, rigid profiles mean quicker, neater reveals compared with site-built closers.
• Improved comfort – Warmer internal surfaces reduce condensation risk and mould growth.
• Fire-rated options – Many products (e.g. Timloc FR60) provide tested 60-minute fire resistance for Part B compliance.

Applications of 100 mm Cavity Closer

• New-build masonry homes and apartments.
• Window and door openings in cavity wall construction.
• Areas where a continuous cavity barrier is required for fire integrity.
• Extensions or refurbishments where the cavity width is 100 mm.

Installation Tips for 100mm Cavity Closer

• Cut to the required length and mitre corners for heads and sills.
• Ensure the closer is plumb and level before fixing.
• Overlap with adjacent DPCs or cill trays to maintain a continuous damp barrier.
• Fix frames through the closer as per the manufacturer’s centres.
• Seal the internal air-tight layer back to the vapour control membrane or plasterboard for best thermal performance.

Why Choose Build4Less (B4L)?

• Leading brands – Stocking trusted names such as Timloc, Thermo-loc and FRSTOP for guaranteed performance.
• Competitive pricing & bulk packs – Save on multi-plot developments with pack-of-10 options.
• Expert support – Our team can advise on Part L and Part B compliance, product sizing, and installation details.
• Fast UK delivery – Reliable nationwide service keeps your project on schedule.