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Improving R-value with Radiant Barrier Over Insulation

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Improving R-value with Radiant Barrier Over Insulation

Ed discusses the biggest energy efficiency mistake in residential homes and how to easily fix it so your home is more comfortable and energy efficient all year long.

For customers who live in COLD CLIMATES and are considering this installation method but have moisture concerns, please check out our SuperPerf™ radiant barrier that was developed to lay on top of attic insulation but is guaranteed not to trap moisture!

SuperPerf™ compared to Original AtticFoil™:
Why You Need SuperPerf™ Radiant Barrier:
How to Install SuperPerf™ Super Breathable Radiant Barrier:
Worried About Dust Accumulation? Learn more:

Shop for SuperPerf™ Radiant Barrier for Cold Climates here:

Biggest Attic Insulation Scam... REVEALED!

The problem of fluffing is rampant among attic insulation companies and Ed is going to tell you all about it! Watch the video and learn how you can know what to ask for to prevent this scam from happening to you.

Get R-value recommendations:

Find an installing attic insulation contractor:

Read through the most commonly asked questions about attic insulation:
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How Radiant Barrier Works - AtticFoil® Reflects Heat Coming Off The Roof

- How Radiant Barrier Foil Insulation Works In An Attic. Radiant barrier works by reflecting heat coming off the roof. Normally the heat travels across the attic by radiation and is absorbed by the attic insulation. Normal attic insulation only helps to reduce conductive heat (R-Value) flow. Eventually the insulation heats up and the heat is transferred into the home. A radiant barrier will REFLECT the heat coming off the roof and make the INSULATION COOLER. By reducing the insulation temperature, it reduces heat flow into the home.

Radiant Barrier Installation - How To Install Radiant Barrier

- Radiant Barrier Installation - Open-Ridge Staple-Up Method

This video shows the professional installers from installing heavyweight double-sided AtticFoil Radiant Barrier Foil Insulation.

The Open-Ridge or staple up method is usually the best installation method for warm or hot climates. The concept is pretty simple. The roof gets hot and is converted to radiant energy (heat). Radiant heat travels at the speed of light until it is either absorbed or reflected. Normally, the heat is absorbed by attic insulation. By installing radiant barrier attic foil, the radiant heat being emitted by the roof is reflected BEFORE it has the chance to be absorbed by the attic insulation. The result is cooler insulation, less heat gain into the home and a more efficient and comfortable home.

Order Radiant Barrier Online:

Visit for complete information on Do-It-Yourself Radiant Barrier Foil installations, tips and tricks.
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Reflective Insulation Radiant Barrier over Walls

800-256-5867 When Reflective Insulation Radiant Barrier is installed it is important that the walls, sky lights, knee walls, raised ceilings and any where else that is insulated be covered with the energy shield. The insulation is there because it slowing down conductive and convective heat. To create a complete barrier it all needs to be covered. Call Energy Improvements for energy saving tips.

Radiant Barrier Installation Directly Over Attic Insulation

In this video Ed shows you how to install AtticFoil radiant barrier foil over (on top of) your existing insulation to maximize the benefit in the cold months of winter.

1/2 face respirator with P100 filter available here:

WHY you should install radiant barrier AtticFoil over your insulation VIDEO here:
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Radiant barrier for cold attic spaces

My personal experience with a radiant barrier product in a New England home

Bubble Foil Scams - False Claims About 11 R-Value By Other Products


How Does AtticFoil® compare to products like Solarguard, eShield insulation, bubble foil products, and other foil/foam/fiberglass type products.

Some products CLAIM to have an r-value of over 11 and are ONLY about 1/4 thick. What is never mentioned is that in order to get the R-11 value, the product MUST be installed INSIDE a 2 x4 wood frame and have 3/4 plywood on BOTH sides. It is the ENTIRE assembly or system that achieves an R-11 in a heat flow down test. This requires over 3 inches of dead air. The term up to 11.6 R-value is also used.

Radiant barrier products installed in a ventilated attic are NEVER installed in this method, therefore can not achieve an R-11 value as advertised.

In this video Ed Fritz - the owner of demonstrates how a total the R-11 test result is achieved. The R-11 is achieved by taking a product and incorporating it into a system or assembly using 2x4 wood framing and 3/4 plywood. The ENTIRE system is then tested for downward heat flow.

Radiant Barrier Department Of Energy - Reflectivity vs Emissivity

Depending on which side of the double-sided product the air gap is one, AtticFoil will either use reflectivity to reflect heat, or emissivity to block it. Radiant barrier decking (ex. TechShield or Solar Board) uses emissivity, where as stapling AtticFoil to the bottom of the rafters uses reflectivity and is more effective at reducing heat transfer.

Radiant Barrier Foil Insulation, Go Green Radiant Barrier by HeatBlockers Houston

Radiant barrier is explained and demonstrated in this video. Foil radiant barrier is far superior to the spray paint material they call a radiant barrier. In order to be classified as a radiant barrier the product must reflect a minimum of 90% of the radiant heat. The best spray paint barrier only reflects 75%. The foil radiant barrier in this demonstration reflects 97% of the radiant heat. Go Green and save!
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AtticFoil® Compared To eShield, Reflectix and Other Bubble Foil Insulation



How Does AtticFoil® compare to products like Solarguard, eShield insulation, bubble foil products, and other foil/foam/fiberglass type products.

Some products CLAIM to have an r-value of over 11 and are ONLY about 1/4 thick. What is never mentioned is that in order to get the R-11 value, the product MUST be installed INSIDE a 2 x4 wood frame and have 3/4 plywood on BOTH sides. It is the ENTIRE assembly or system that achieves an R-11 in a heat flow down test. This requires over 3 inches of dead air.

Radiant barrier products installed in a ventilated attic are NEVER installed in this method, therefore can not achieve an R-11 value as advertised.

In this video Ed Fritz - the owner of reads the FINE PRINT and clearly explains how other products can claim to achieve an r-value of 11 and only be 1/4 thick.

Reflective Attic Insulation Installed to Rafters: Radiant Barrier Houston by HeatBlockers®

Insulating Attic Rafters with reflective attic insulation is what HeatBlockers® has been doing for almost 14 years. Attic radiant barriers in Houston TX are very effective when the radiant barrier installation is matted to the attic ventilation.
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Radiant Barrier Paint - Sherwin Williams E Barrier

This house is being retrofitted with a roof radiant barrier. We're spraying Sherwin William E-Barrier paint to reduce the heat in our attic.

Radiant Barrier Walls with Rigid Foam Insulation

You hear alot about radiant barriers but they need to be installed correctly. In this video you'll see the correct way to install a radiant barrier on a framed wall. Matt Risinger

Insulation 2.0 - 3 Steps to Re-Insulate

Are you wanting to re-insulate your house to save on energy bills? Don’t blow more insulation without watching this video first! Insulation 2.0 goes beyond just a blow & go with insulation. We will show you how to pre-test, how to look for problems, and then we’ll show you the three steps of Insulation 2.0. Suck, Air-Seal, Re-Blow! You will learn some good Building Science in today’s BUILD SHOW… Let’s Get Going!

Hire Stephen and Quincey of True R-Value for your Austin, TX Insulation 2.0 job!


Flir One -
Flir One PRO (that Ken was using)

See more of Ken on the IDI YouTube channel here:



Blower Door - RetroTec

Follow Matt on Instagram!
or Twitter

Huge thanks to our Show sponsors Polywall, Huber, Dorken Delta, Prosoco, Rockwool & Viewrail for helping to make these videos possible! These are all trusted companies that Matt has worked with for years and trusts their products in the homes he builds. We would highly encourage you to check out their websites for more info.





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Choosing the Best Radiant Barrier Install Method

You've heard about AtticFoil brand foil insulation, you've done your research, you've measured and bought your foil and now it's time to install it. But which method is the best one? Should you staple the foil up on the bottom of the roof rafters/trusses? Or should you lay it on the attic floor, over the insulation? You've seen both and aren't sure what's the best way to do it. Watch this video to find out which method is best for your home and why and if you want more info, visit the website:

*Staple Up Method Instructions:
*Staple Up Method - Truss Attic Instructions:
*Over the Insulation Method Instructions:
*Tall Attic Method Instructions:

**How to Measure Your Attic for Radiant Barrier:

KozzeeWrap Radiant Reflective Insulation Training Part 2 - The Perfect Vapor Barrier

KozzeeWrap


The Reflective Aerospace
Heat-Shield that Breathes!

This revolutionary technology has been used by NASA for over
50 years in their space program and is economical to install

* Warmer in winter, cooler in summer
* Eliminates draughts and cold spots
* Dramatically increases the comfort level in your home or business
* Guaranteed to enhance the energy efficiency of your home or business by
saving and recycling up to 97% of the energy that is escaping every
minute, 24 hours a day, through your attic, walls, crawl space, basement
regardless of whether the existing R factor is 10 or 50
* Most new and old residential and commercial buildings will benefit from installing KozzeeWrap as it will dramatically improve the living and working environment for everyone
* Saves thousands of dollars in future utility bills
*Reduces your carbon footprint

KozzeeWrap
Residential/Commercial Radiant Barrier
Lower you cost of home ownership!

Traditional insulation that is installed in the attic/walls and floors of most homes and buildings has fixed R values. Thicker has always been considered better but in reality all mass insulation's have an emissive value of 90%.   R value insulation materials only slow down heat transfer/loss  Once the transfer occurs, so does conduction

RTCM01 is a spin off  from Space Age Technology. These types of material are used by NASA  in their Space  suits and Space craft  to Insulate them from the fierce heat of outer space and was certified by the National Space Foundation.

RTC Industries of Canada is Canada's Exclusive Authorized  Distributor  of  this Reinforced Commercial/Residential Radiant Insulation and Vapor Barrier Material that Breathes.

No Mildew in your home
RTCM01has a mere 3% Emissive rating and reflects out up to 97%  of the Sun's Heat and Humidity and will keep your home much cooler in Summer and lower your A/C  costs.

In winter it will reflect up to 97% of your furnace heat  back into your home

This will save you THOUSANDS of Dollars in Future Utility Bills as energy costs will escalate.

Radiant Barrier - Short Installation Summary

- Short Summary of How Radiant Barrier Foil Insulation Works In An Attic. Radiant barrier works by reflecting heat coming off the roof. Normally the heat travels across the attic by radiation and is absorbed by the attic insulation. Normal attic insulation only helps to reduce conductive heat (R-Value) flow. Eventually the insulation heats up and the heat is transferred into the home. A radiant barrier will REFLECT the heat coming off the roof and make the INSULATION COOLER. By reducing the insulation temperature, it reduces heat flow into the home. This video addresses the concept of radiant barrier, how to staple it up, partial verses full coverage and attic ventilation.

Installing Radiant Barrier Insulation - Stick Built Attic.mpg

Are you interested in saving on your home's energy costs? Attics are prime areas for energy loss. They are generally way under-insulated. That's where we come in. The type of installation you need depends on your roof design. This video shows you how to install radiant barrier installation in a stick built or non-truss attic. Our radiant barrier and foil insulation products are the best in the industry. Coupled with having the correct level of fiberglass insulation for your climate, installing an attic radiant barrier is generally the single most important insulation project you can do to lower your home's energy cost. Visit us at for more information.

Radiant Barrier Applications


Traditional insulation, such as fiberglass or cellulose, is rated with an R-value, which measures thermal resistance. Increasing the thickness of an insulating layer increases the thermal resistance. In other words, the higher the R-Value, the better it is at slowing down the transfer of heat. With R-value, more is better! It's important to note that traditional insulation doesn't stop the transfer of heat; it only slows it down (like pouring water through a sponge). The heat absorbed eventually transfers into living spaces.

Traditional insulation is effective in preventing heat transfer by conduction (the transfer of heat by touch) or convection (the transfer of heat through air). However, traditional insulation is ineffective in preventing the transfer of radiant heat—which is responsible for the majority of heat loss in the winter and nearly all of heat gain in the summer.

To understand why RadiaSource™ is superior to traditional insulation, it is important to understand E-value. E-value measures the thermal emittance of materials and is rated on a scale of 0 to 1. A high emittance material is one that absorbs and emits a lot of radiant heat. Asphalt is an example of a material with a high emittance value (.90-.98). A low emittance material does not absorb or emit heat. So, when it comes to E-value, lower is better!

Traditional insulation materials have a high E-value. As a result, they offer little protection from radiant heat transfer. Traditional insulation, even with a high R-value, has an E-value of 0.8-0.9, which means it absorbs and emits 80 - 90% of radiant heat and reflects only 10 - 20%. This heat absorption will eventually transfers into, or out of, your home or commercial building, causing cooling and heating units to run harder and longer.

You may have noticed that in the summer months, if left on, your cooling unit will run throughout the night. Many homeowners leave their windows open, hoping their home, or commercial building, will eventually cool down by morning. This is due, in part, to the heat absorbed by your traditional insulation. It continues to seep into your home or commercial building long after outside temperatures have dropped.

Conversely, in the winter months, your heater never seems to stop. This is due to the high absorption of traditional insulation, which soaks up heat that should stay in living spaces, and emits it into the outside air.

WHY DOES RADIASOURCE'S™ RADIANT BARRIER WORK?
NASA utilized radiant barrier technology in the 1950's. It was created to be very lightweight in order to minimize weight impact on vehicle payload while also protecting spacecraft, equipment, and personnel from the extreme temperature fluctuations of space. It has been employed on virtually all manned and unmanned NASA missions. ( This technology is now being utilized by RadiaSource™ to protect against extreme temperature fluctuations in buildings on earth.

To learn more, visit

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