The article explains how sealing air leaks first helps insulation improve comfort, energy performance, and moisture control.
CLARKS SUMMIT, Pa., Oct. 25, 2026 /PRNewswire/ — Why should you air seal your home before adding insulation? A HelloNation article featuring insights from Insulation Expert Mike Mancuso of North East Industries in Clarks Summit, Pennsylvania, provides the answer by explaining why air sealing is the first step toward improving comfort, energy performance, and the effectiveness of insulation.
The article explains that many homeowners focus on adding more insulation when they want to lower energy costs or make their homes more comfortable. While insulation plays an important role, the article notes that sealing air leaks first allows insulation to perform the way it was designed. Without this first step, conditioned air can continue escaping through hidden openings, reducing the benefits of new insulation.
To help readers understand the concept, the HelloNation article compares a home to a winter coat. Even a heavy coat cannot keep someone warm if it is left unzipped. In the same way, a house with air leaks cannot fully benefit from insulation because heated or cooled air escapes through gaps before insulation can slow the movement of heat. The article explains that air sealing closes these openings, while insulation helps resist heat transfer through walls and ceilings.
According to the article, many homes contain small openings that homeowners never notice. Air leaks commonly develop around windows, doors, attic access points, plumbing penetrations, electrical wiring, and other locations where building materials meet. While each opening may appear insignificant on its own, together they can allow a substantial amount of conditioned air to escape. The article explains that completing air sealing before adding insulation helps address these hidden problems first.
The article also notes that leaving air leaks unsealed limits the effectiveness of even high-quality insulation. Because moving air carries heat with it, insulation alone cannot fully control indoor temperatures when conditioned air is constantly escaping. By creating a tighter building envelope through air sealing, homeowners allow insulation to work more effectively, supporting greater comfort throughout every season.
Another important benefit discussed in the article is reducing drafts. Rooms that feel chilly during the winter or warm during the summer often indicate unwanted airflow through ceilings, exterior walls, windows, or attic openings. The article explains that air sealing helps reduce drafts, making indoor spaces more comfortable without relying on constant thermostat adjustments.
The HelloNation article also describes how combining air sealing with insulation promotes more even temperatures throughout the home. Without properly sealing air leaks, conditioned air may never reach every room consistently. Once leaks are addressed, insulation can better slow heat transfer, helping create a more balanced indoor environment from one room to the next.
Improved energy performance is another advantage highlighted in the article. Heating and cooling systems operate more efficiently when less conditioned air escapes from the home. The article explains that reducing air leaks decreases unnecessary strain on HVAC equipment while helping maintain comfortable indoor temperatures. Although many factors contribute to energy performance, sealing leaks before adding insulation is presented as an important part of the overall strategy.
Moisture control is another reason the article recommends completing air sealing before installing insulation. Air leaks can carry moisture into attic spaces and wall cavities, particularly during changing weather conditions. Over time, excess moisture may reduce insulation performance or contribute to mold growth and damage to building materials. The article explains that limiting unwanted airflow helps reduce these risks while supporting the long term effectiveness of insulation.
The article concludes that every home has different air sealing needs depending on its age, design, and condition. Older homes often develop additional air leaks as building materials naturally expand, contract, and wear over time, while even newer homes can contain small gaps that affect comfort. Completing air sealing before adding insulation allows both improvements to work together, helping reduce drafts, create more even temperatures, improve energy performance, and better manage moisture for years to come.
Air Sealing Before Adding Insulation features insights from Mike Mancuso, Insulation Expert of Clarks Summit, Pennsylvania, in HelloNation.
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SOURCE HelloNation
