Keeping heating and cooling costs to a minimum down is primarily accomplished by using insulation. But knowing the different kinds of insulation used and where to use each is also important.
Insulation For Unfinished Walls
Insulation For Enclosed Walls
- Concrete block insulation: Its ideal use is for new-construction homes or homes undergoing major renovations. Unlike conventional concrete, autoclaved cellular concrete and autoclaved aerated concrete masonry have 10 times more insulating value.
- Blanket batts and rolls, foam board (rigid foam), reflective system: These forms of insulation can also be used on foundation walls, floors, and ceilings. They work best when used for the average stud and joist spacing with no obstructions. Foam board advantages lie in its combination of minimal thickness and high insulation value. It’s well-suited for unvented, low-sloped roofs and blocks thermal short circuits if installed over joists or frames. Reflective insulation works well, depending on the spacing, at preventing downward heat flow. Its bubble form can insulate odd-shaped spaces or spaces with obstructions.
- Structural insulated panels (SIPs): SIPs are used as insulation in new-construction walls, floors, ceilings and roofs. SIP homes take less time to build and, compared to traditional construction techniques, have greater and more uniform insulation.
- Insulating concrete forms (ICFs): ICFs are used for foundation and new-construction walls. Since ICFs are built into the home’s walls, their thermal resistance is high.
- Rigid fibrous or fiber insulation: The primary use is for ducts in non-air conditioned spaces. It’s ideal for spaces that need to hold against high temperatures.
- Loose-fill, sprayed foam and foamed-in-place: These are used for preexisting walls, walls with new openings, difficult to reach places or unfinished attic floors. They’re great for adding insulation to non-insulated rooms, oddly shaped rooms, or around obstructions.
To speak with an expert on home insulation or to have your home evaluated, contact us at Russell’s Heating & Cooling
Our goal is to help educate our customers 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.
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