Insulating older homes presents unique challenges that set them apart from modern properties. While improving energy efficiency and comfort is essential, the process often requires careful planning and tailored solutions. In this blog, we’ll explore why insulating older homes is more difficult and discuss how these challenges can be overcome.

Construction methods and materials

Older homes, such as Victorian or Edwardian properties, were built using construction methods and materials that differ significantly from modern buildings. For instance, many feature solid walls instead of cavity walls, making traditional cavity wall insulation unsuitable. Solid walls often require external or internal wall insulation, which can be more complex and expensive.

Additionally, materials like lime mortar and timber frames, commonly used in older homes, must be handled carefully to avoid structural damage or compromising the building’s breathability.

Preservation of character and heritage

Many older homes are listed buildings or located in conservation areas, meaning they are protected by regulations that restrict certain types of alterations. Installing external insulation, for example, might not be permitted if it alters the property’s appearance. This can make finding suitable insulation solutions more challenging, as any modifications must maintain the home’s historical character.

Our Heritage Lime Range is specially designed to work with older homes, including insulating them with Mineral Wool and Lime Basecoat. This method maintains the heritage aesthetic and breathability.

Breathability and damp management

Older homes were designed to “breathe,” allowing moisture to pass through walls to avoid damp build-up. Adding modern insulation materials without considering this can trap moisture, leading to dampness and mould issues. Breathable insulation materials, such as wood fibre or cork, are often better suited for older properties, but they can be more expensive and less widely available.

Insulating Cork Render is an excellent option for older properties. The material can be sprayed on and maintains breathability.

Irregular shapes and structures

Unlike modern homes, older properties often have unique architectural features, including uneven walls, sloped ceilings, and intricate detailing. These irregularities make installing insulation a more complex and time-consuming process, requiring bespoke solutions and skilled workmanship.

Limited space for insulation

Internal wall insulation is a common solution for solid-walled older homes, but it can reduce the size of rooms—a significant concern for homeowners. Similarly, roof and floor insulation might require alterations to existing features, such as lowering ceilings or lifting floorboards, which can be disruptive and costly.

Outdated services and systems

Older homes may have outdated electrical or plumbing systems that complicate insulation installation. For example, rewiring or relocating pipes may be necessary before insulation can be fitted. These additional tasks increase the project’s time and cost.

Overcoming the Challenges of Insulating Older Homes

While insulating older homes is undoubtedly more difficult, it’s not impossible. Here are some steps to address these challenges:

• Seek Professional Advice: Consult specialists experienced in insulating older homes. They can recommend solutions tailored to the property’s needs.
• Choose Breathable Materials: Opt for insulation materials that allow the home to maintain its breathability, such as cork or wood fibre.
• Work Within Regulations: Check with local authorities to ensure compliance with building regulations, particularly for listed buildings and conservation areas.
• Focus on Key Areas: Prioritise insulating areas with the most heat loss, such as lofts and floors, before tackling walls.
• Consider Grants and Funding: Look into government schemes or grants that support insulation upgrades in older homes.