Cavity Wall Insulation

NexGen Energy Group provides efficient cavity wall insulation services to enhance your home’s energy efficiency. Our registered installers drill small holes in the exterior walls and inject insulation materials, such as mineral wool or polystyrene beads, to fill the cavity.

The entire process typically takes about two hours for an average-sized house, ensuring minimal disruption to your daily routine. While the cost varies depending on the size of your home, these expenses can often be recouped within five years through savings on energy bills.

Reduce Heating Costs: Save as much as £515 per year (according to the Energy Saving Trust) while maintaining a consistently warm and comfortable home throughout the year.

Improve EPC Rating: Enhance your home’s Energy Performance Certificate (EPC) score, making it more attractive to potential buyers and potentially increasing its market value.

Promote Environmental Responsibility: Lower your carbon footprint and support environmental well-being by reducing energy consumption and greenhouse gas emissions.

To qualify for standard cavity wall insulation, your home must meet the following criteria:

1. External walls have unfilled cavities that are at least 50mm wide and free from debris.
2. Masonry or brickwork is in good condition and not exposed to heavy rain or flood risks.

During the assessment, the installer will determine suitability and may use mineral wool or polystyrene beads for insulation. For houses with narrow cavities or flood risks, polyurethane foam may be used, and specialist installers will manage the process. If internal walls exhibit damp patches, it’s advisable to address these issues with a damp prevention specialist before installing insulation. Additionally, cavity barriers are installed in homes sharing walls with neighbours to prevent interference.

For flats, insulation requires agreement from all occupants in the block, as individual flat insulation is typically impractical.