Ian Baker • June 10, 2022

How to Soundproof awkward areas

How to soundproof around awkward areas such as: Chimney Breasts, RSJs, Columns and Boxed in Piping, using the ReductoClip system

Soundproofing a chimney

When using the ReductoClip™ Wall System to soundproof around awkward areas, (such as RSJ's, chimney breasts, boxed in piping or electrics) it is important to leave a 5mm gap. This is because each soundproofed surface needs to be isolated from the next and not touching. This ensures that the ReductoClips are able to flex and absorb sound energy. If the finished system on the protruding surface was touching the system on the back wall, then this would mean a rigid build without any room for flexing. The 5mm layers are then filled with acoustic sealant once the remaining layers of the ReductoClip System have been installed, prior to the final layer of plasterboard being installed.


For the front layer, this needs to stick out by 35mm, so that the final build up on either side makes for a flush finish.

Below are diagrams showing the spacings needed based on soundproofing a brick column using the ReductoClip System. This would be the same whether using the ReductoClip Independent or ReductoClip Direct to Wall System. The same principle also applies when soundproofing any two right angles.

ReductoClip System

How To Soundproof Around A Chimney Using The ReductoClip System

Overhead View:

  1. Leave a 5mm gap between side layers and alcove layers
  2. Leave a 5mm gap between side layers and front layers
  3. Plasterboard and FlexiSound layers on the front should stick out 35mm from the front of the furring channel on the sides. Ensuring the front layer will end square with the front of the side layers

Soundproofing a chimney showing the first layer of the ReductoClip System

ReductoClip System first layers on a chimney breast

Soundproofing a chimney showing final layers of the ReductoClip System

Soundproofing a chimney with the ReductoClip System

How to Soundproof a chimney using the ReductoClip System

Side view:

Showing the attachment of the ReductoClips and Furring Bars to a brick chimney.

How to soundproof a chimney with ReductoClips and Furring Bars

Notice the overhang of the first layer of plasterboard (circled in red). Once the additional layers of the ReductoClip System are added, this will then become flush with the overhang.

How to soundproof a chimney

Fully Soundproofed brick chimney showing all layers of the ReductoClip System

The completed installation showing how the front layer ends square with the front of the side layers.

How to soundproof a chimney with the ReductoClip System
Download our full installation guide

Share

"We don’t expect you to become an overnight expert in soundproofing, that’s what we’re here for."

Noisy neighbours
By Ian Baker June 11, 2025
Useful guide to soundproofing your walls against noisy neighbours. Including several wall sound insulation options and showcasing the UK's best Soundproofing products.
Feet on wooden floor creating impact noise
By Phil Lyons May 1, 2025
A guide on the best soundproofing acoustic underlays for timber and concrete floors. Performance against airborne and impact noise and final floor finish suitability
soundproof ceiling
By Ian Baker May 1, 2025
Discover the most effective way to soundproof a ceiling in your flat or home. This expert guide explains how to block impact and airborne noise using the ReductoClip system, perfect for timber or concrete ceilings.
ReductoClip Sound Insulation for walls
By Phil Lyons April 17, 2025
Tired of noisy neighbours? Discover how wall sound insulation can transform your home into a quieter, more peaceful space. This in-depth guide covers the best soundproofing materials, methods, and DIY-friendly solutions to block unwanted noise through shared, brick party walls.
Semi-detached home
By Phil Lyons March 27, 2025
Discover how soundproofing a brick party wall with the ReductoClip Independent Wall System completely blocked noisy neighbours TV and music, restoring peace at home. 5-star customer testimonial.
Best soundproofing for floors
By Ian Baker January 26, 2025
The 5 best acoustic floor solutions when looking to successfully soundproof a timber floor to achieve a high level of airborne and impact noise reduction
ProSound Easy-Fix Acoustic Ceiling Foam Panels
By Sam Fessey December 9, 2024
Reduce echo and dramatically improve the sound quality in office spaces. A detailed case study showing the office acoustics before and after. Easy peel and stick installation of ProSound Easy-Fix Acoustic Foam ceiling Panels.
ReductoClip Independent Wall System on a brick wall
By Phil Lyons November 28, 2024
Soundproofing a brick wall can be extremely effective if key principles are followed. Decoupling soundproofing layers from the brick wall and enhancing its ability to absorb and dampen sound energy. Adding resilience to the brick wall with ReductoClips allows the wall to flex and absorb vibrations, much like a car’s suspension system smooths out road bumps. To block airborne noise, heavy, dense materials like FlexiSound and Acoustic Plasterboard are added. For optimal soundproofing of a solid brick party wall, the ReductoClip Independent Wall System offers a outstanding solution, combining key soundproofing elements for maximum noise reduction.
Stud wall before soundproofing
By Phil Lyons September 27, 2024
How to soundproof a stud wall, reducing noise through hollow internal partition walls.
ProSound™ SoundBoard 4 Soundproofing Wall Panels
By Sam Fessey September 4, 2024
An overview of the best soundproofing panels for soundproofing unwanted noise through a party wall and the best acoustic wall panels for reducing reverberation and echo within a space.
More Posts