Given the nature of the article and the details provided, the additional instruction regarding Cavitybatt Price and information and specifications is integral to all sections of the article, including the introduction. Therefore, it should be incorporated into the introduction section as requested.

Cavitybatt represents a specialized solution in the realm of drywall insulation, designed to enhance the performance of steel frame structures, timber frame buildings, and drywall systems. Manufactured from high-quality Glasswool and faced on one side with glass tissue, Cavitybatt is engineered to meet the stringent demands of modern construction, offering both thermal insulation and soundproofing capabilities. Its adoption can significantly contribute to creating more energy-efficient and quieter living spaces, addressing two critical concerns in today’s built environment: energy conservation and noise pollution.

Incorporating drywall insulation, particularly a product as advanced as Cavitybatt, into construction projects not only elevates the quality of indoor environments but also aligns with sustainable building practices. The following sections will delineate the benefits of using Cavitybatt for drywall insulation, soundproofing walls, and drywall partitioning. They will explore the technical specifications that make Cavitybatt an optimal choice for drywall sound insulation and detail the installation processes that ensure its effectiveness in drywall soundproofing insulation. By focusing on these elements, this article aims to provide industry professionals with comprehensive insights into maximizing the performance and environmental benefits of drywall systems through advanced insulation solutions.

Benefits of Using Cavitybatt for Drywall Insulation

Cavitybatt drywall insulation, engineered with high-quality Glasswool, offers a plethora of benefits tailored to enhance modern construction. The following points detail the advantages of using Cavitybatt for drywall insulation, focusing on thermal and acoustic performance, [ease of installation], and safety features.

Thermal and Acoustic Insulation

  1. Effective Thermal Regulation: Cavitybatt provides exceptional thermal insulation by reducing heat transfer. This feature helps maintain a comfortable indoor temperature throughout the year, keeping interiors warm during winter and cool in summer.
  2. Superior Acoustic Properties: The insulation significantly reduces noise pollution, enhancing the acoustic comfort of living and working spaces. It is especially beneficial in environments where soundproofing is crucial, such as in office boardrooms and residential areas.

Installation and Material Quality

  1. Ease of Installation: Designed for user convenience, Cavitybatt insulation can be easily fitted within various structural frameworks, including steel and timber frame buildings. This ease of installation helps in reducing labour costs and installation time.
  2. Durability and Material Excellence: Manufactured from premium Glasswool, Cavitybatt insulation is not only durable but also resistant to moisture, which prevents the growth of mould and mildew. This quality ensures a long product life and contributes to healthier indoor air quality.

Safety and Environmental Impact

  1. Fire Safety: With a fire rating of Class A/A 1/1 Non-combustible, Cavitybatt ensures a high level of fire safety, making it a suitable choice for use in sensitive environments like hospitals and schools.
  2. Environmental Benefits: By improving energy efficiency and reducing heat loss, Cavitybatt contributes to lower energy consumption and decreased greenhouse gas emissions. This feature supports the broader goals of energy conservation and sustainability in building design.

Each of these benefits underscores why Cavitybatt is a preferred choice for professionals aiming to achieve high performance in both thermal and acoustic insulation, while also ensuring ease of use and contributing to environmental sustainability.


102mm Cavitybatt Insulation fitted walls and ceiling
102mm Cavitybatt Insulation fitted walls and ceiling


Installation Process and Best Practices

Preparation and Measurement

  1. Clearing the Space: Before initiating the installation of Cavitybatt insulation, it is crucial to ensure that the area is free from any debris or obstructions. This preparation step is essential for a smooth installation process.
  2. Measuring the Area: Accurate measurement of the space where the insulation will be installed is critical. It is recommended to measure the area carefully before proceeding to cut the insulation. This ensures that the insulation fits perfectly, enhancing its effectiveness.

Cutting and Installing the Insulation

  1. Cutting the Insulation: Cavitybatt insulation should be cut slightly larger than the measured space. This allows the insulation to fit snugly without gaps, which are potential areas for energy loss. A sharp knife is required for precise cutting, especially when fitting the insulation around pipes and conduits.
  2. Inserting the Insulation: The insulation should be pushed firmly into place between the drywall partition panels. Cavitybatt and Cavitylite are specifically designed to fit between studs with glasswool tissue facing the installer, ensuring a tight and secure fit.

Sealing and Maintenance

  1. Sealing the Edges: After the insulation is in place, it is important to seal any gaps or cracks around the edges. This step is crucial to prevent air leaks and ensure maximum insulation efficiency. Proper sealing contributes to the overall energy efficiency of the building.
  2. Cleanup and Storage: Post-installation cleanup is necessary to remove any debris or waste materials. Additionally, any unused Cavitybatt insulation should be stored undercover and in dry conditions to maintain its quality and usability for future projects.

These steps, when followed diligently, ensure that Cavitybatt insulation is installed effectively, providing optimal thermal and acoustic performance in a variety of building settings.


63mm Cavitybatt fitted to drywall in homes
63mm Cavitybatt fitted to drywall in homes


Technical Specifications and Product Range

Cavitybatt and Cavitylite insulation products are crafted to meet diverse construction needs, ensuring both functionality and compliance with environmental standards. Manufactured by Isover, these products are designed for use in cavity walls, ceilings, rooflines, and masonry wall cavities, providing versatile applications in both residential and commercial structures.

Product Specifications:

  • Sizes and Dimensions: Cavitybatt is available in sizes of 1200mm x 600mm, perfectly fitting 600mm wide uprights, with thickness options of 51mm, 63mm, and 102mm. Similarly, Cavitylite is available in roll form, measuring 1200mm wide and 5.4m long, which can be split at 600mm for precise fitment between uprights.
  • Material Quality and Safety: Both Cavitybatt and Cavitylite are manufactured from high-quality Glasswool, faced with glass tissue on one side to enhance handling and rigidity. They are non-combustible, with a fire classification of SANS 10177 Part 5 and SANS 428 (A/A1/1) and EN 13501 (A1-s1, d0), ensuring safety in fire-sensitive environments.
  • Environmental and Health Standards: The production of these insulation products adheres to ISO 9001:2015 and ISO 14001:2015, reflecting a commitment to quality management and environmental sustainability. They are non-hygroscopic, do not promote corrosion of metals, and prevent the growth of fungi, mould, or bacteria, contributing to healthier building environments.

Performance Attributes:

  • Thermal and Acoustic Efficiency: Cavitybatt and Cavitylite are specifically engineered for exceptional acoustic performance in drywall systems, with R-values of 1.34, 1.66, and 2.68 depending on the thickness, which correspond to their thermal resistance capabilities. This makes them ideal for applications requiring significant soundproofing and thermal regulation.
  • Sustainability: These products are manufactured with sustainability in focus, using less material and energy, which results in lower emissions and zero ozone-depleting potential (ODP) and global warming potential (GWP).

Packaging and Storage:

  • Compression Packing: Both Cavitybatt and Cavitylite are compression-packed, reducing volume for optimized transport and storage. This packaging feature ensures the products maintain their integrity and performance from manufacturing to installation.
  • Storage Recommendations: It is advised to store these insulation materials undercover and in dry conditions to preserve their quality and effectiveness for future use.

By incorporating these advanced materials into construction projects, professionals can significantly enhance building performance, ensuring compliance with safety standards and contributing to sustainability efforts.


Cavitybatt Drywall Insulation
Cavitybatt Drywall Insulation


Sustainability and Environmental Impact

Cavitybatt insulation not only excels in thermal and acoustic efficiency but also stands out for its commitment to environmental sustainability. Manufactured in compliance with ISO 14001:2004, the production process minimizes material and energy use, significantly reducing emissions. This eco-friendly approach is further enhanced by the product’s zero ozone-depleting potential (ODP) and zero global warming potential (GWP), ensuring that it does not contribute to the accumulation of harmful atmospheric gases.

The materials used in Cavitybatt insulation include recycled glass and sand, which are abundant and sustainably sourced. This choice of materials reflects a responsible environmental stance, promoting the use of renewable resources and reducing the ecological footprint of manufacturing processes. Moreover, the insulation’s low embodied energy—the total energy consumed during its production, from raw material extraction through to delivery—further underscores its efficiency and sustainability.

In terms of building performance, Cavitybatt insulation contributes significantly to energy conservation. By improving thermal efficiency, it reduces the need for heating and cooling in buildings, which in turn lowers energy consumption and greenhouse gas emissions. Additionally, its durability and resistance to moisture not only extend the product’s lifespan but also decrease the frequency of replacement, thereby minimizing waste and promoting a sustainable building environment.

What is Cavitybatt Drywall Insulation?

Cavitybatt drywall insulation is a specialized product designed specifically for enhancing the thermal and acoustic performance of drywall systems. Manufactured from high-quality glass wool, Cavitybatt insulation is known for its exceptional insulating properties, which make it a popular choice in various construction settings. Glass wool, the primary material in Cavitybatt consists of fine fibres spun into batts or rolls that are tailored to fit snugly between the wooden frames of walls, roofs, and ceilings. This snug fit creates an airtight barrier that effectively prevents heat transfer, thus maintaining a comfortable indoor environment irrespective of external weather conditions.

Key Features of Cavitybatt Insulation

  1. Thermal and Acoustic Insulation: The glass wool in Cavitybatt provides superior insulation against both heat and sound, contributing to energy savings and a quieter indoor atmosphere.
  2. Versatility and Ease of Installation: Its design allows for easy installation between drywall partition panels, with a tissue facing on one side to add strength and support during and after installation.
  3. Maintenance and Durability: Cavitybatt is lightweight, easy to handle, and maintenance-free, offering long-term durability and high tear strength, which is beneficial in various installation scenarios.

Cavitybatt’s role in drywall systems extends beyond mere insulation; it is engineered for optimal acoustic performance, making it an ideal solution for environments where soundproofing is crucial, such as in residential areas and office spaces. The product’s design includes compression packing, which reduces its volume for optimized transport and storage, ensuring that it remains intact and effective from the point of manufacture to installation.

Applications of Cavitybatt in Modern Construction

Cavitybatt’s versatility extends beyond typical drywall applications, proving its efficacy in a range of construction settings. Primarily designed for use in steel frame buildings and timber frame structures, it offers substantial benefits in thermal and acoustic insulation. The product’s adaptability allows it to be effectively utilized in cavity walls, ceilings, rooflines, and masonry wall cavities, making it an integral component in both residential and commercial construction.

Diverse Construction Applications

  1. External Masonry Cavity Walls: Cavitybatt is pivotal in delivering enhanced thermal protection during residential extension and renovation projects. Its application in external masonry cavity walls helps maintain consistent indoor temperatures and energy efficiency.
  2. Masonry Party Walls: Utilizing Cavitybatt in masonry party walls addresses the thermal bypass effect, achieving a zero U-value. This application is crucial for energy conservation and offers significant sound reduction, thereby enhancing the living or working environment.

Certified and Compliant

Cavitybatt insulation is not only versatile but also certified for use across various construction scenarios. It has been awarded Certificate 94/3079, which approves its use in all exposure zones for domestic and non-domestic buildings up to 25m in height. Additionally, it is accepted by the NHBC for use by the BBA Certificate and NHBC Standards, particularly Chapter 6.1 concerning external masonry walls. This certification underscores its reliability and compliance with stringent construction standards, ensuring safety and performance across multiple applications.

Fire Safety and Non-Combustibility

Cavitybatt and Cavitylite insulation products stand out for their exceptional fire safety ratings, crucial for ensuring the safety of building occupants in the event of a fire. These products have been rigorously tested and meet the highest standards for non-combustibility. According to SANS 10177 Part 5 and SANS 428, both Cavitybatt and Cavitylite are classified as A/A1/1, and they also fulfil the EN 13501 criteria with a classification of A1-s1, d0, indicating that they do not contribute to fire spread.

The core material used in these insulation solutions, glass wool fibres, is inherently non-combustible. This characteristic is pivotal in preventing the spread of flames and toxic smoke in fire situations. In practical terms, Cavitybatt insulation can withstand direct exposure to fire for up to 60 minutes without compromising its structural integrity or safety features. This fire resistance capability provides critical evacuation time, thereby enhancing the chances of safety for occupants and allowing more time for emergency response teams to manage the situation effectively.

Furthermore, Cavitybatt insulation complies with the stringent requirements of SANS 10400-T, which pertains to fire safety legislation. This compliance not only underscores the product’s suitability in high-risk fire environments but also its role in adhering to national safety standards, ensuring that building projects meet the necessary legal and safety benchmarks. The non-combustible nature of Cavitybatt, tested to SANS 10177-5, reaffirms its classification and highlights its safety attributes, making it an ideal choice for use in various construction scenarios where fire safety is a priority.


Can existing homes have cavity wall insulation installed?

Yes, cavity wall insulation can be retrofitted into most existing homes. If the walls currently lack insulation, the cavity can be filled with beads. If there’s already some insulation present, additional material can be added to fill the remaining space in the cavity.

Is it advisable to install cavity wall insulation?

Insulating cavity walls is highly recommended as it helps save energy and reduce heating costs. Homes built from the 1990s onwards typically already have wall insulation. However, older homes might not have any insulation, making them ideal candidates for this upgrade.

What are the potential drawbacks of cavity wall insulation?

While cavity wall insulation is effective in saving energy and may be supported by government funding for installation, it can also lead to issues such as cold spots, rain penetration, dampness, and black mould. It’s important to consider these potential problems when deciding on insulation.

What type of cavity wall insulation offers the highest efficiency?

Foam insulation, especially polyurethane foam, is considered the most efficient type of cavity wall insulation due to its superior thermal properties. However, the installation process is complex and requires professional handling to ensure effectiveness and safety.

CavityBatt insulation for Drywall Partitioning.  The CavityBatt is available in 3 thicknesses and is specifically manufactured for insulating between Drywalling. Wall cavity insulation is available in Rolls and batts.

CavityBatt Price

The wall cavity thermal insulation is available in three thicknesses from 51mm, 63mm, and 102mm thick. 

Benefits Of CavityBatt

  • Reduce heat flow between rooms.
  • For outside walls, the 100mm CavityBatt reduces outdoor temperature substantially.
  • The insulation is laminated with a thin mesh on one side for ease of handling.
  • Please note all batts are 600x1200mm wide.