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Aeroseal Envelope is the only method to reach any level of air tightness, the first time, every time.

Why Air Sealing Matters

The airtightness issue goes beyond how well a building’s HVAC system performs. Uncontrolled air leakage can also provide a vehicle for unwanted moisture to enter a building, which can become the reason for a building to fail, leading to costly building repairs. Because moisture is transferred predominantly by air currents — accounting for up to 98% of all water vapor movement in buildings — air sealing your home is essential. Leaky houses also allow dust, allergens, pollutants, and other airborne particulates to enter the home, leading to poor indoor air quality.

Reducing the amount of air that leaks in and out of your home is a cost-effective way to cut heating and cooling costs, improve durability, increase overall comfort, and create a healthier indoor environment.

cut away illustration of a homes airflow before being airsealed
cut away illustration of a homes airflow after being airsealed
Addressing the Major Risks of Building

Aeroseal Envelope addresses three of the four major risk management controls when constructing a home.

1. Thermal Control

The control of heat flow in buildings requires insulation layers installed properly that are comprised of few thermal bridges, an effective air barrier system, good control of solar radiation, and management of interior heat generation.

3. Vapor Control

Different than bulk water control, a vapor control addresses the moisture that travels via air and is unseen to the naked eye. Once inside a wall cavity, the vapor will go through convective loops in which it can reach dew point and turn from vapor to liquid. This is often seen later as condensation or damp insulation fibers.

2. Air Flow Control

In order for air to flow into, out of, or within a building, two requirements must be met: a hole or path must exist for the air to flow through and there must be a driving force. Air flows within buildings are either controlled or uncontrolled. In either case, the actual flow of air is determined by several factors, including hole size, resistance to flow, and pressure effects. Uncontrolled air flow can lead to comfort, indoor air quality and energy efficiency concerns.

4. Bulk Moisture Control

Bulk moisture movement (or liquid flow) has the potential to be the most damaging moisture transport mechanism confronted by a building. Typically thought of as rain or snow, bulk moisture movement also includes flowing groundwater. This can typically be addressed by proper land grade, redirection of water via gutters, downspouts, etc.

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