Homes constructed today use proven building science and more efficient materials that deliver better efficiency and comfort than homes constructed a few decades ago. A major element in home efficiency is the insulation. Make sure the HVAC contractor you’re working with has knowledge of the latest insulation methods, and be wary of the following insulation myths.
Insulation Doesn’t Need to Be Replaced If It Gets Wet
This statement simply isn’t true. Homeowners in South Texas are quite familiar with the problems that moisture and water can cause. If fiberglass or cellulose insulation gets wet, the insulation should be replaced. Though fiberglass is manufactured from non-organic materials, mold development will likely occur if it gets wet.
Insulation Is Needed to Stop Air Infiltration
A 1997 study by the National Association of Home Builders (NAHB) Research Center for the Energy Star program found no substantial link between air infiltration and the type of insulation used. Good sealing materials are needed to stop air leaks around windows, doors, electrical outlets, the attic door and wall penetrations.
Too Much Insulation Doesn’t Let a Home Breathe
Insulation is designed to stop the movement of heat caused by conduction, not heat movement by air leaks. Air sealing affects a home’s tightness and air movement. Additionally, mechanical ventilation is the better method for circulating fresh air through the home, rather than allowing a leaky home to breathe. Seal your home and make sure you get plenty of daily fresh air ventilation.
R-Value Doesn’t Matter in our Warmer Region
R-value matters, and it matters a lot. Homes in South Texas should have adequate attic insulation to R-49 and wall insulation between R-13 and R-19. Under-insulating your home leads to heat gain and loss from hot attics and sun-struck walls.
If you’re upgrading your home’s energy efficiency or designing a new home, make sure you have the facts and can dispell insulation myths. To learn more, please contact CCAC today. We serve residents of Corpus Christi and South Texas.
Our goal is to help educate our customers in Corpus Christi, Texas about energy and home comfort issues (specific to HVAC systems). For more information about insulation and other HVAC topics, download our free Home Comfort Resource guide.
Credit/Copyright Attribution: “Ivelin Radkov/Shutterstock”
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