Airtightness is a crucial component of any modern, energy-efficient building. Its primary purpose is to prevent unwanted air leakage through gaps, cracks, and junctions within the structure, ensuring that warm air stays inside and cold air stays out. By creating a continuous, well-sealed internal envelope, airtightness improves the overall performance of insulation, reduces heat loss, and makes it far easier to maintain a comfortable indoor temperature. For new builds, renovations, and grant-funded upgrades, achieving strong airtightness levels is now an essential requirement for meeting today’s energy regulations.

In addition to boosting energy efficiency, airtightness brings a range of long-term benefits that enhance both comfort and building durability. Properly sealed homes experience fewer draughts, more stable indoor climates, and reduced noise infiltration. Airtight construction also minimises the risk of moisture entering the structure, protecting against mould, damp, and future building damage. When combined with effective ventilation, airtightness contributes to a healthier living environment and lower running costs. As part of a full interior upgrade, it offers one of the highest returns on investment for homeowners seeking a warm, efficient, and future-proof home.