Do Radiant Barriers Really Work?

Radiant Barrier Installed in an Attic

What are radiant barriers?

Radiant barriers are made from a highly reflective material and installed in the attic of homes. The reflective material typically is an aluminum foil that is applied to a substrate material like cardboard, kraft paper, oriented strand board, or plastic film. Some are reinforced with fiber to increase durability. 

Can other types of materials be used in conjunction with radiant barriers? 

Yes, radiant barriers can be used in combination with other reflective insulation materials. When used with other materials, the radiant barriers should be installed on the thermal side as the facing material.

How does a radiant barrier work?

It is important to state that for the best results, use the services of an experienced contractor that is certified, licensed, and insured.  If you’re considering radiant barriers for a new build, this is the easier way and the builder will be certified. The radiant barrier material comes in a roll and is draped between the roof rafters. This minimizes dust accumulation on the reflective side and the roof sheathing is installed next. 

In an existing home,  there are two methods of installing radiant barriers. The first is to staple the foil side to the roof rafter’s underside. The other method is to lay the radiant barrier material over the existing insulation in the attic. 

What are the benefits of using a radiant barrier?

After a cold winter in Texas, many of us are ready when the season changes and summer comes right after spring. However, we want our homes cool after being out in the heat all day, and radiant barriers are an ideal method of insulating the home against the hot summer heat. Some benefits of radiant barriers include: 

#1 A Safe Addition 

Adding radiant barriers to your home is a safe and smart choice. They are non-carcinogenic and non-toxic. But because they are installed in the attic or within the framework, there is little chance you or anyone in your home will come in contact with the material.  And if you are in the attic, it is usually installed within the framework or within the attic rafters. 

#2 Reduces Heat

When radiant barriers are installed within the attic framework, they reflect the summer UV heat rays away, back into the atmosphere. Radiant barriers are a protective shield for your home. Radiant barriers will keep your home cool on the hottest summer days using emissivity and reflectivity.  

#3 Saves Energy & Money

One thing homeowners do not like about summer are the utility bills. With radiant barriers installed, the UV rays of the sun are reflected back into the atmosphere, which reduces the amount the air conditioning needs, which reduces the cost of your utility bills. 

#4 Work With Other Types Of Insulation

Radiant barriers don’t have to replace your current insulation! They make other types more effective. Whereas other types of insulation traps air, resulting in reducing convection heat transfer with air movement to slow air movement. Radiant barriers reflect the heat back out. Working together, you have two forces keeping your home cooler. 

#5 A Permanent Fixture

Radiant barriers are a permanent fixture in your home. They are durable and strong materials with a long lifespan with no maintenance.  Another benefit to radiant barriers: they are pest-proof, something other insulation materials can’t offer.  

What are the limitations of using a radiant barrier?

While there are many benefits to radiant barriers, there are also downsides which include: 

  • Radiant barriers aren’t the best in winter weather because it reflects the heat back into the atmosphere. Not an ideal insulation method in areas where cold weather is prominent.
  • Radiant barriers don’t work well with certain building proportions. For reasons that haven’t been defined yet, they increase heat movement which reduces their efficiency. 
  • The slope of the roof and the type of roofing shingles installed, along with attic ventilation can affect how much heat is reflected.
  • In areas where winter is the more prominent weather, additional insulation is needed, costing the homeowner more money. 
  • Moisture collects frequently on the interior surface caused by water vapor that evaporated from inside the house and rose to the attic. That moisture is resisted by radiant barriers, which causes the moisture to slide off the radiant barrier and into the attic, where mildew and mold can form. 

What is the cost of installing a radiant barrier? 

The cost of having radiant barriers installed can vary based on the square footage of the house. It is recommended as any other significant improvement to your home to get three or four quotes and compare the pricing, warranty, and other factors before making that purchase.

A Radiant Barrier

In Closing: Are Radiant Barriers A Health Risk?

Like anything in your home, you want to make sure it is safe for your family. No, because radiant barriers do not contain any type of toxins, there is nothing to irritate the eyes, lungs, or skin. 

If you are interested in installing a radiant barrier in Fort Worth, TX, give ACT Home Energy Specialists a call at 817-781-8781.