Air Sealing That Respects Breathability
Target big leaks first—attic penetrations, chimney chases, rim joists, and utility penetrations—using durable sealants, gaskets, and proper fire-rated materials. Seal to smooth, clean surfaces and connect plane to plane. In older assemblies, pair tighter envelopes with balanced ventilation to protect indoor air quality. Remember, the aim is controlled airflow, not suffocation. When the house stops losing conditioned air, comfort stabilizes, equipment sizes drop, and humidity behaves predictably.