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  • Sku: KIWB14KG075-450

Knauf Earthwool 14kg R1.9 Wall Batt 75mm x 450mm x 1160mm (683682)

Delivery cost calculated at checkout.

Product Description

  • Knauf Insulation Acoustic range offers various densities for optimal acoustic performance.
  • Improves building's acoustic performance by absorbing unwanted sound from external sources and between rooms.
  • TwinTech® technology ensures a smooth finish on both sides for easy handling and improved appearance.
  • Knauf Insulation glasswool is non-combustible, sound absorbing, and odorless.
  • No added formaldehyde, made with up to 80% recycled glass, and ECOSE® Technology.
  • Suitable for builders, designers, installers, and DIYers.
  • Compression packed for efficient storage and transportation.
  • 50-year warranty.
  • Enhances energy efficiency and comfort while being environmentally conscious.

Delivery Options

Wall Ceiling is delighted to offer plasterboard supply service throughout Australia.

For orders outside of Sydney, please email us at with the items and quantities you require from our website, and we will promptly provide a manual quote.

Standard Delivery (7am - 4pm, Monday to Friday).

Standard orders are delivered within 1-3 business days in metro areas and 5-10 days in regional areas. Some products have a longer lead time as indicated on the product page.

Our office will call you before heading to your site. Please ensure adequate labour on site to help with unloading.

Please note:

Only select items are available for pickup.

Please give us a call before visiting. Our friendly staff may be out for delivery, and the warehouse might be unattended during your visit.

Delivery Information

Where does Wall Ceiling deliver to?

Wall Ceiling is delighted to offer plasterboard supply services throughout Australia.

For orders outside of Sydney, please email us at with the items and quantities you need from our website, and we will promptly provide a manual quote.

How much do you charge for delivery?

Customer will receive an accurate delivery charge during checkout.

What are the delivery options?

Standard orders are delivered within 1-3 business days in metro areas and 5-10 days in regional areas. Some products have a longer lead time as indicated on the product page.

Bulk orders with weight greater than 1.5T may need longer lead time.

Who is responsible for unloading the materials off the truck?

Our delivery driver will assist with unloading materials adjacent to the truck. However, it is the customer's responsibility to move the materials beyond that point.

What time will truck arrive during the delivery day?

It's difficult to predict precise delivery time due to factors such as traffic and weather conditions; however we will make every effort to deliver within the expected time frame.

Our delivery driver will contact you in advance, ensuring you are ready for the delivery.

Do I need to be on-site to receive my delivery?

Yes, if you are not available, please kindly arrange another person to accept and unload the materials on your behalf.

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Understanding Acoustic Insulation

At its core, Acoustic Insulation is designed to absorb, dampen, or block sound waves. This technology is not just for recording studios or luxury apartments; it's a practical solution for anyone aiming to minimize noise intrusion or contain sound within a specific area.

The Benefits of Acoustic Insulation

The primary advantage of installing Acoustic Insulation is the significant reduction in both external and internal noise levels. This can lead to:

  1. Protection from external noise
  2. Comfort and privacy
  3. Reduction of sound transmission and vibration passing through building elements
  4. Applications for both renovation projects and new builds

    How much insulation do I need?

    Building acoustics focus on sound transmission mainly through the perimeter wall, as well as internal walls, floors and ceilings.

    Transmission loss (TL) or Sound Reduction Index (R) express the effectiveness of blocking sound, which is frequency-dependent.

    This is expressed in decibels (dB). The higher the loss, the better the insulation works as a barrier to unwanted noise.

    The amount of acoustic insulation roll, slabs, granulates or panels required will depend on the material you choose, the size of the area being insulated and how much direct, flanking and other sound transmission there is.

    Key Brands in Acoustic Insulation

    • Earthwool Insulation: Known for its environmental friendliness and exceptional sound-absorbing properties, Earthwool Insulation is made from recycled glass bottles and sand. It's a sustainable choice for those looking to reduce their ecological footprint while improving their acoustic comfort.

    • Bradford Insulation: A staple in the insulation industry, Bradford Insulation offers a range of products tailored for noise reduction. Their insulation solutions are known for their durability and effectiveness in a variety of settings, from residential to commercial spaces.

    • Fletcher Insulation: Renowned for its innovation, Fletcher Insulation provides high-quality, Australian-made products designed for superior acoustic performance. Their range includes specially engineered Glasspool and rockwool insulation materials, perfect for achieving a quieter and more peaceful environment.

    • ROCKWOOL: ROCKWOOL acoustic insulation is made from stone wool – an excellent material for blocking, absorbing and even enhancing sound where required.

    Add An Extra Layer or Replacing with Sound Resistance Plasterboard

    This racket-reducing technique requires a significant investment of time and money, but it’s one of the most effective ways to quiet a room. Cover the existing walls and ceiling with an extra layer of 13mm Gyprock Soundchek plasterboard. And as extra protection against noise transmission, seal the new drywall with acoustic caulk.

    Or more thoroughly, demolish the existing partition wall and replacing with 1 layer or 2 layers of 13mm Gyprock Soundchek. This high density plasterboard has improved sound transmission properties to help maintain the peace when used in residential and commercial walls and ceilings.

    Need to Buy Acoustic Insulation?

    Acoustic insulation is a sound investment for those looking to enhance the comfort and tranquility of their living or working environments. By choosing the right product, whether it's Earthwool Insulation, Bradford Insulation, or Fletcher Insulation, and following proper installation and maintenance protocols, you can significantly improve the acoustic quality of your space.

    Embrace the silence and elevate your environment with the right acoustic insulation solution. If you have any further queries or need expert advice, reaching out to Wall Ceiling. We have got experts working in the in the field for decades can guide you in making the best choice for your acoustic needs.