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Assuring that party walls are adequately insulated is important for maintaining energy efficiency and comfort in your home. Studies have shown that approximately 5 million homes in the UK, which accounts for over a quarter of all homes, could significantly benefit from installing party wall insulation. This simple and effective measure can improve energy efficiency, reduce heat loss, and increase comfort for homeowners.
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A party wall is a wall that separates and creates a gap between two attached homes, such as semi-detached or terraced properties typically built before 1990. Insulating the walls between you and your neighbours not only helps decrease the transfer of noise between homes but also positively reduces heating costs. Party wall insulation can be incorporated during a standard installation or added later to homes with existing cavity wall insulation.
Installing party wall cavity insulation is a meticulous and systematic process that guarantees effective thermal insulation between neighbouring properties:
Different materials can be used to insulate party walls to improve energy efficiency and thermal comfort and reduce noise transmission between walls. Here are the main types of party wall insulation commonly used today:
To select the best cavity wall insulation for your project, carefully consider your budget and your energy efficiency goals.
Cavity insulation cost for party walls can vary depending on your home's size, type, and location. In the UK, typical costs differ based on your home type.
Material type | Average material cost including installation costs (per m²) |
---|---|
Mineral Wool | £15 - £25 |
Foam Insulation | £25 - £50 |
Polystyrene Beads | £10 - £20 |
Fibreglass | £5 - £10 |
Cellulose Insulation | £10 - £12 |
The UK government aims to achieve carbon neutrality by 2050 and has established two grant schemes, the Great British Insulation Scheme and the ECO4 Scheme, that will run until March 2026. These initiatives support households across the UK, offering grants for wall insulation projects and other home efficiency improvements to reduce the carbon footprint of domestic housing.
Let's look at what each scheme has to offer:
Party wall cavity insulation must comply with current building regulations. The main aspect to consider is the age of your home. Homes built between the 1920s and 1980s typically have cavity walls. Since the 1980s, new building regulations have required newly constructed houses to include insulation material within their cavity walls.
The outer walls of any cavity wall must have a thickness greater than 260mm.
To determine the proper insulation level for cavity walls, check your country's building specifications. These specifications are provided in guidance documents that explain how to meet the energy efficiency standards in the Building Regulations.
Approved Document L 2021 in England (ADL 2021)
Approved Document L 2022 in Wales (ADL 2022)
Technical Handbook 6 2022 in Scotland (TH6 2022)
Understanding the benefits and disadvantages of party wall insulation is essential; these pros and cons can help you make the best choice for your property:
Pros:
Cons:
Limited DIY options: Professional cavity wall insulation installation is often required for optimal results.
Insulating your cavity party wall has many advantages that significantly improve your home's comfort. By reducing heat loss, improving cavity wall insulation soundproofing, and adding value to your property, party wall cavity insulation can lead to long-term savings and environmental perks. It's a worthwhile investment to decrease energy costs, reduce noise between properties, or support sustainability initiatives.
Are you considering insulating your home? GreenMatch makes it easy. No more time-consuming online searches and appointments. Fill out our quick online form in 30 seconds. You'll receive up to 3 free quotes from trusted installers nearby. Click the button below to get started!
Fill in the form in just 1 minute
Insulating a party wall improves energy efficiency, minimises heat loss, and improves acoustic insulation between adjoining properties and rooms. This maintenance provides a comfortable indoor environment and can increase property value.
Cavity wall insulation is the most cost-effective and efficient method for soundproofing a party wall. This technique greatly reduces sound transmission between adjoining properties and improves thermal efficiency by filling the wall gap with insulating materials like mineral wool or foam. It is the ideal choice for effectively soundproofing a party wall.
Yes, soundproofing a party wall can actually reduce noise transmission between properties. Proper insulation materials and installation techniques can improve acoustic insulation and provide privacy.
Installing cavity wall insulation is the most effective method for damp-proofing a party wall. Party wall cavity insulation provides thermal insulation and effectively reduces moisture penetration and damp-related issues by filling the cavity with suitable insulating materials like mineral wool or foam.
Akif is a copywriter at GreenMatch since 2023. With a keen interest in community sustainability, green solutions and the role of digital media in identifying climate trends, he aims to hone in on his background in International Studies and Digital Media to provide a multidisciplinary approach to written content rooted in credible research and accuracy.
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