Skip to content
Order by Wednesday 18th December for delivery before Christmas. We will close for Christmas on Monday 23rd and reopen on Thursday 2nd Jan.
Call us on 0208 123 9710 | Email us at info@soundstop.co.uk

SIF Floor Hanger

Original price £21.93 - Original price £24.27
Original price
£21.93
£21.93 - £24.27
Current price £21.93

Order by Wednesday 18th December to guarantee delivery before Christmas. We will close for Christmas on Monday 23rd and will reopen on Thursday 2nd Jan.
🛠️ Minimum Order Value

This product is from our Building Materials range, which have a minimum order value of £140. View our Building Materials range to browse all the qualifying products.


  • For Retaining Existing Floorboards

  • A slim fitting floor soundproofing solution

  • Three levels of acoustic protection

The only solution available for those who wish to float original floorboards.

The SIF Floor Hanger is a revolutionary soundproofing solution designed to reduce both impact and airborne noise while preserving the original floorboards. This innovative system creates a floating floor with a minimal floor height increase of just 7mm, making it ideal for projects where retaining the aesthetic of existing timber flooring is a priority. By combining advanced acoustic engineering with simple installation, SIF Floor Hangers provide an effective and unobtrusive solution to noise issues in homes and commercial spaces.

What is a SIF Floor Hanger?

The SIF Floor Hanger is an acoustic system specifically engineered to reduce noise transmission through timber joist floors while allowing the original floorboards to remain in place. Constructed with a slim-profile metal channel and integrated neoprene strips, the SIF Floor Hanger decouples the floorboards from the structural joists, creating a floating floor that isolates sound and vibration. It is an ideal solution for upgrading floors to meet modern soundproofing and Building Regulations standards without extensive alterations.

How Do SIF Floor Hangers Work?

SIF Floor Hangers function by isolating the floorboards from the structural joists, preventing sound and vibration from transferring through the floor. The process involves:

  1. Neoprene Isolation: The integrated neoprene strip within the metal channels absorbs impact and airborne noise by decoupling the floorboards from the joists.
  2. Floating Floor Design: The original floorboards are screwed into the flanges of the hangers rather than directly into the joists, creating a floating floor that reduces sound transmission.
  3. Acoustic Layering: 19mm plasterboard is housed within the hanger system to enhance mass and further dampen noise.

This combination of features ensures that sound energy is absorbed and dissipated before it can travel through the floor structure.

How Effective Are SIF Floor Hangers at Stopping Nuisance Noise?

SIF Floor Hangers are highly effective at reducing both impact noise (such as footsteps and furniture movement) and airborne noise (like voices and music). The system provides significant noise reduction by decoupling the floorboards from the joists and incorporating high-density acoustic materials. When combined with acoustic mineral wool (RS60) within the joist cavity, the system achieves compliance with Building Regulations for soundproofing, making it suitable for residential and commercial applications.

Which Hanger Type do I need for My Joists?

Selecting the correct hanger type depends on the width of your joists. Use the following guide to determine the appropriate type for your project:

  • Type 1: Designed for joists up to 63mm wide. This is ideal for narrow joists commonly found in older or lightweight constructions.

  • Type 4: Best suited for joists ranging from 64mm to 75mm wide. This type accommodates slightly wider joists while maintaining a snug fit.

  • Type 2: Specifically for joists that are 75mm or wider. Choose this option for larger joists, typically found in heavy-duty or modern construction projects.

By matching the hanger type to the width of your joists, you can ensure optimal performance, stability, and acoustic benefits for your project. If in doubt, measure your joists and consult the product specifications for further clarity.

SIF Hanger Size Options:

Type Length Width Thickness Joist Size
Type 1 200mm 126mm 0.6mm Up to 63mm wide
Type 2 200mm 84mm 0.6mm 75mm or wider
Type 4 200mm 139mm 0.6mm 64mm to 75mm wide

Where Can the SIF Floor Hangers Be Used?

SIF Floor Hangers are versatile and can be used in:

  • Residential Homes: Ideal for upgrading noise control between floors in heritage properties or homes with aesthetic floorboards.
  • Commercial Spaces: Suitable for offices, hotels, and other spaces where retaining the original floor finish is essential.
  • Refurbishment Projects: Perfect for projects where access is available from above only and minimal floor height increase is desired.
  • Fire and Acoustic Upgrades: Enhances both soundproofing and fire resistance of existing timber floors.

How to Install the SIF Floor Hanger

  1. Lift the Floorboards: Carefully remove the existing floorboards to expose the joists.
  2. Fill the Joist Cavity: Install high-density acoustic mineral wool (100mm RS60) between the joists for additional soundproofing.
  3. Fit the Hangers: Cut and fit the SIF Floor Hangers on top of the joists. Ensure they are evenly spaced and securely attached.
  4. Install Acoustic Plasterboard: Cut 19mm soundplank plasterboard to size and place it within the SIF Hangers for added mass and sound attenuation.
  5. Reinstall the Floorboards: Screw the original floorboards into the flanges of the SIF Hangers, ensuring a secure and stable floating floor.
  6. Seal the Edges: Use perimeter isolation strips to fully isolate the floating floor from the surrounding structure.

This straightforward process ensures a secure installation that delivers excellent acoustic performance.

What Are the Benefits of Using the SIF Floor Hangers?

  • Retains Original Floorboards: Maintains the aesthetic and character of existing timber floors.
  • Minimal Height Increase: Adds just 7mm to the overall floor height, making it a discreet solution for soundproofing.
  • Significant Noise Reduction: Reduces both impact and airborne noise to meet Building Regulations standards.
  • Cost-Effective: Eliminates the need for extensive structural changes, saving time and money.
  • Enhanced Acoustic Performance: Works seamlessly with mineral wool and plasterboard for superior soundproofing.
  • Easy Installation: Designed for straightforward fitting with minimal disruption.
  • Fire Resistance: Improves the fire safety rating of timber joist floors.

Here are the main details for this product:

Dimensions:

All hangers are 2m long
Type 1 hanger fits up to 69mm joist widths
Type 4 hanger fits up to 89mm joist widths

Thickness: NA

Pack Size:

1 Hanger

Weight: NA

Density: NA

Coverage: sqm

Fire rating: NA

Thermal Conductivity:

Please contact our team if you have any questions on this product.

Looking for a complete soundproofing solution?

If your looking for soundproofing for a particular situation or application, then the best place to start is with our soundproofing solutions that cover walls, floors, ceilings and reducing echo. Select the relevant application below to find out more.

Wall Solutions

Floor Solutions

Ceiling Solutions

Echo Solutions

Visit our Fitting Instructions section for more detailed instructions relating to your specific application.

Check out our Soundproofing Guides for more information, advice and tips on all aspects of soundproofing.