Spray foam insulation revitalizes older properties by creating a seamless air barrier that fills the gaps, cracks, and structural voids caused by decades of settling. While vintage homes possess character and charm, they often suffer from significant air leakage that makes rooms feel drafty and causes energy bills to spike. Spray foam expands to seal these irregularities permanently, stabilizing indoor temperatures and reducing the workload on aging HVAC systems. This modernization allows owners of historic or older residences to enjoy contemporary comfort levels without sacrificing the architectural integrity of the structure.