Improved Insulation and Air Infiltration Systems

New homes are built to a higher standard of energy saving specifications than older homes including improved insulation and air infiltration systems. Installing better insulation and minimizing air infiltration improves the energy efficiency, air quality and comfort of a new home.

A tight house will:

• Have lower heating bills due to less heat loss
• Have fewer drafts and be more comfortable
• Reduce the chance of mold and rot from moisture trapped in cavities
• Prevent dust, pollen, car exhaust, noise and insects from entering home.
• Have a better performing ventilation system
• Potentially require smaller heating and cooling equipment capacities.

Insulation provides resistance to the flow of heat. This is referred to as the R-value of insulation. The more resistance insulation provides, the lower the heating and air conditioning costs for homeowners. Today’s building codes require higher R-values in new homes to stop heat from escaping through the floors, walls and ceilings of insulated living space. This keeps the house more comfortable and saves money on energy costs for the homeowner.

Air leakage, often referred to as air infiltration, accounts for 25–40% of the energy used for heating and cooling in a typical home. Reduced air infiltration combined with proper ventilation not only reduces energy bills but also improves the quality of indoor air.

Air Leakage as defined by the NC State Extension website: Ventilation is fresh air that enters a house in a controlled manner to exhaust excess moisture and reduce odors and stuffiness. Air leakage, or infiltration, is outside air that enters a house uncontrollably through cracks and openings. It is unwise to rely on air leakage for ventilation.

During cold or windy weather, too much air may enter the house and, during warm or calm weather, too little. Also, a leaky house that allows moldy, dusty crawlspace or attic air to enter is not healthy.

House wrap, tape, caulk and foam sealants help prevent outside air from entering the house. This not only lowers energy bills and keeps the house more comfortable but also reduces the chance of mold and rot due to trapped moisture in floor systems, walls and ceilings.

New homes offer a healthier environment, lower energy costs and more comfortable living conditions than older homes due to improved insulation and air infiltration systems as well as better HVAC systems.

Contact McKee Homes to find out more about the energy efficiency of our new homes and how much it can save you on monthly energy bills.

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