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FAQs

Common Questions

Below we have broken out common questions you may have

Efficiency/Savings

How does adding insulation improve my home’s energy efficiency?

Insulation is a temperature barrier, keeping warm air in during winter and keeping heat out during summer. This reduces the workload on your HVAC system, meaning lower utility bills and a more comfortable home all year round. The secret is choosing the right type and thickness of insulation for your region and home needs.

In fact, Insulation doesn’t just keep heat in during winter—it keeps out unwanted heat during summer. Insulating your crawl spaces, walls, and attic prevents hot air from entering your home, which means less air conditioning is needed. An insulated home will be cooler by default, which means lower cooling bills and a more comfortable indoor temperature.

Yes! Proper insulation can cut energy costs by up to 20% or more, depending on the amount of insulation in your house. If your house is not well-insulated or the insulation is old, heat will easily escape during winter and cool air in the summer, making your HVAC system work harder. Adding new insulation in key locations like the attic, basement, and exterior walls can easily remove inefficiency and reduce your utility bills every month

Materials and Options

What are the different types of insulation, and how do they compare?

There are several various insulation materials that can be utilized, each having benefits:

  • Spray foam insulation – expands and fills in the gaps and air leaks and is very good for energy efficiency.
  • Blown-in insulation -using fiberglass or cellulose is ideal for attics and inaccessible spaces, with very good coverage.
  • Batts and rolls -(most typically fiberglass) are pre-cut sheets  and are best suited for walls, floors, and ceilings in new construction or retrofit.

Yes! Spray foam insulation is a superior air sealer, making your home more energy-efficient. It fills cracks and crevices, preventing drafts and moisture buildup. While it costs more upfront than other materials, it can pay for itself through savings on heating and cooling bills and can last for decades without sagging or settling.

For attics, blown-in insulation is a popular choice because it fills holes and covers large areas effectively. If your attic has irregular spaces or already has insulation that must be added to, spray foam is a great option to add air sealing. If you are insulating during new construction or renovation, fiberglass rolls and batts can also be used. The most suitable choice will be determined by your budget and the amount of insulation your attic already contains.

Proccess

What is the process of adding insulation to my home?

The process of installation depends on the type of insulation to be installed but typically involves the following:

  1. Inspection & Evaluation – A qualified technician inspects your current insulation levels and identifies areas of concern.
  2. Preparation – Any air sealing (such as sealing cracks and gaps) or repair is finished before installation.
  3. Installation – The chosen insulation product (spray foam, blown-in, or batts/rolls) is installed where it was indicated.
  4. Final Check – Final check guarantees even coverage and correct installation for optimum energy efficiency.

The time it takes will vary with the area and the type of insulation to be installed (*Note these are estimates and does not include setup):

  • Blown-in insulation is done in a matter of hours.
  • Spray foam insulation will take a day or more, including drying time.
  • Fiberglass batts and rolls can take 1-2 days, especially if floors or walls need to be cut.
  • A whole-house insulation job can generally be accomplished in one or two days for an average-sized home.
  • Clear the area – Take out furniture or objects from walls, attics, or crawl spaces where insulation will be placed.
  • Look for leaks or damage – Roof leaks or damaged walls are a problem and repairing them in advance will ensure that insulation functions properly.
  • Seal air gaps – Sealing air gaps surrounding vents, doors, or windows before the addition of insulation guarantees maximum energy efficiency. Your insulation expert will also provide you with instructions based on the type of insulation being installed.

 

 

Understanding Insulation Terminology

What is R-value, and why is it important?

R-value indicates how effectively insulation prevents heat flow—the greater the R-value, the more effective it is at keeping heat out during winter and in during summer. Various sections of your home need varying R-values to offer you maximum energy efficiency. Attics need to be higher in R-value than walls or basements, heating your home to the right temperature and saving you energy expenses.

Insulation reduces the rate of heat transfer, but air sealing blocks holes in air leaks through which heated or cooled air escapes. Drafts can still exist even if well-insulated around windows, doors, and attics, and your HVAC system will have to do more work to keep the conditioned space at a consistent temperature. Insulation is more efficient energy-wise when you add spray foam, caulking, or weather stripping because they block leaks and reduce heat loss.

Settling happens when the insulation is compressed or shifted over time and its performance is affected. This happens mainly with loose-fill cellulose and blown-in insulation, which is compressed by water pressure or gravity. Too much settling of insulation creates room through which heat is lost and there is more energy consumption. Proper installation and proper material selection minimize settling and maintain insulation performance.

Illowa Insulation LLC, family-owned, brings quality, eco-friendly insulation to homes in Eastern Iowa & Western Illinois. Save money & energy together!