Weatherization

Weatherization (American English) or weatherproofing (British English) is the practice of protecting a building and its interior from the elements, particularly from sunlight, precipitation, and wind, and of modifying a building to reduce energy consumption and optimize energy efficiency.

Many types of insulation can be thought of as weatherization, because they block drafts or protect from cold winds.

However, measures such as installing storm windows, weather stripping, caulking, and blown-in wall insulation can reduce the amount of outdoor air infiltrating into a home.

In such a scenario, a more airtight building envelope can actually offer protection against infiltration of outdoor air pollution.

[7] The same is true for the protection offered by tighter building envelopes during wildfire events that cause elevated levels of outdoor air pollution.