BPI Building Analyst Practice Test

Question: 1 / 400

What is the first step that must be taken before insulating?

Install vapor barriers

Remove old insulation

Air seal

The first step before insulating is to air seal. Air sealing involves identifying and sealing any gaps or cracks in the building envelope that could allow air leakage. This is crucial because unsealed air leaks can diminish the effectiveness of insulation, allowing conditioned air to escape and outside air to enter. By taking the time to air seal, you maximize the performance of the insulation, improve energy efficiency, and enhance overall comfort.

While other tasks like installing vapor barriers, removing old insulation, and inspecting for leaks are important, they are generally secondary to ensuring that the structure is airtight. Air sealing creates a controlled environment that prevents drafts and heat loss, making it the foundational step in the insulation process.

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Inspect for leaks

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