5 Most Common Radiant Barrier Problems

radiant barrier

A radiant barrier is a great and innovative way to keep your home’s temperature at equilibrium. They’re also beneficial for lowering heating expenses. When used in a sunny and hot environment. According to the US Department of Energy, radiant barriers can save you 5-10% on cooling bills.

There are, however, certain drawbacks and issues that a radiant barrier may cause. Some of these problems might be attributed to the climate, whereas other difficulties might be the result of bad installation.

When it comes to installing a radiant barrier in your home, there are five potential problems, but the three most significant are ventilation, condensation, and dust. The other two include problems with roof temperature and attic ventilation problems.

Radiant Barriers Potential Problem


Dust is a big concern with radiant barrier technology. Dust prevents the reflective insulation from performing as it should. When dust gets into the radiant barrier material, it destroys its reflecting capabilities, allowing the sun’s rays to enter your roof and raise the temperature in your home.

Fortunately, there are a number of solutions to these problems. You may, for example, use spray-on radiant barriers that are similar to paint.

You must also have adequate ventilation to ensure that your radiant barrier does not get attacked by dust. Make sure no air is trapped in the system and no vents are blocked.

Condensation or Moist

During the winter, the radiant barrier may trap moisture. When it’s cold outside, insulating your roof can lead to moisture accumulation on the underside of your radiant barrier foil. This might cause problems with your insulation’s performance and produce damp spots on your ceiling.

Installing perforated radiant barrier foil is one method to avoid moisture on your radiant barrier foil. You may also seal any air leaks or cracks in the ceiling to prevent future moisture problems.

Inadequate Attic Ventilation 

Radiant barriers only function effectively in an attic that has adequate ventilation.

Proper attic ventilation ensures that heat is circulated, dust can’t accumulate over time, and hazardous pollutants do not form.

If there isn’t enough ventilation, a thermos effect will develop and the radiant barrier may work against its goal, raising the temperature in your attic space.

In order for the heat to dissipate, there must be air circulation that circulates hot air rather than maintaining it stationary. Dust accumulation is also aided by the stillness of the air.

Problems with Roof Temperature

Radiant barriers reflect heat that would otherwise seep into your house. In some situations, this heat might be reflected back into the roof’s surface, raising its temperature.

Radiant barriers are often installed directly on the underside of a roof for easy and clean installation in many houses. However, radiant barrier installations may cause a roof to become warmer. Roof temperature isn’t always important, but when it becomes excessively hot, the roof surface deteriorates and causes other issues, like leaks.

Might Not Be Beneficial When Used Alone

Radiant barriers can successfully prevent heat gain due to radiation. However, they cannot stop heat gain that happens due to convection or conduction. Because of this, you may need to use fiberglass or thermal insulation in addition to it, especially in your attic.

Benefits of Installing Radiant Barrier Correctly

radiant barrier

Radiant barriers are a great way to help reduce energy costs and keep your home comfortable throughout the year. However, it is important that they are installed correctly in order to achieve the most benefit. Some key considerations when installing radiant barriers include the orientation of the barrier relative to the sun’s position, the placement of vents and other openings, and the types of materials used on both sides of the barrier.

By carefully choosing these factors, you can ensure that your radiant barrier functions optimally and helps you save money on heating and cooling costs for years to come. So whether you choose to install Radiant Barrier yourself or hire a professional contractor, be sure to do it correctly so that you get maximum value from this valuable investment.

We’re your dedicated radiant barrier experts in San Antonio

At Attic Pro, we are your trusted experts in radiant barrier installation and other attic insulation needs in San Antonio. With years of professional experience and an unwavering commitment to providing the very best in insulation solutions, we know exactly how to help you achieve optimal energy efficiency for your home. Whether you are looking to install new radiant barriers or need help maintaining or removing existing barriers, Attic Pro is ready and equipped to handle it all. With our unmatched attention to detail, high-quality products, and expert services, you can be sure that your attic will always be protected from temperature fluctuations and excessive energy loss. So if you want the best in radiant barrier foil and long-lasting results, look no further than Attic Pro.


  1. Radiant Barrier Problems – Why Reflective Insulation Is Flawedhttps://powersolarphoenix.com/radiant-barrier-problems/
  2. What is the difference between Radiant Barrier Foil vs. Spray?  https://www.radiantbarrier.com/blogs/news/what-is-the-difference-between-radiant-barrier-foil-vs-spray
  3. Radiant Barriers: Myths Busted And Facts Explained. https://osb.westfraser.com/blog/radiant-barriers-myths-busted-and-facts-explained/

 Attic Pro

1646 Vista Del Monte San Antonio, TX 78216 United States