How does R-Shield PLUS Work?
R-Shield PLUS s a reflective shield that easily installs in your attic and can reduce your home’s energy consumption year round.
We offer our exclusive R-Shield PLUS that is patterned after the high-performance radiant barrier space-age technology created and used by N.A.S.A. to keep the astronauts safe and comfortable in the extreme weather conditions in space. In addition to reflective technology, R-Shield PLUS combines the benefits of a closed-cell polyethylene foam core. R-Shield PLUS is the premiere product on the market and offered exclusively through IES! Keeping the radiant heat out of your house during the hot summer months, and the heat inside your home during the cold winter months, R-Shield PLUS will not only increase the comfort level in your home, but also save you money!
Unlike mass insulation which only slows down or resists heat transfer, R-Shield PLUS reflects heat. Heat rushes towards cold by natural law – the problem is how to keep the heat in in the winter and how to keep it out in the summer. There are three ways in which heat travels from warm spaces to cold spaces: CONDUCTION is direct heat flow through a solid object such as a wall or a ceiling. CONVECTION is heat movement through air, occurring when air is warmed. The warm air expands, becoming less dense and rises. RADIATION is the movement of heat rays across air spaces from a warm object to a cooler object. The heat we feel from a wood stove or a quartz space heater is radiant heat. ALL OBJECTS AND BODIES GIVE OFF RADIANT HEAT. Even the insulation in your attic gives off radiant heat to the cold attic space in the winter, and to the living space in the summer. Regular insulation won’t stop radiant heat loss. Radiant heat must be REFLECTED.
Attic insulation & R-Shield PLUS work together in both hot and cold climates to make homes more energy efficient and comfortable.
How it Helps in Warm Climates
>On a hot sunny summer day, solar radiant energy is absorbed by the roof, heating the roof sheathing and causing the underside of the sheathing and the roof framing to radiate heat downward toward the attic floor and ultimately your rooms below.
With a R-Shield PLUS placed on the attic floor (on top of your insulation), much of the heat radiated from the hot roof is reflected back toward the roof-Similar to a car sunshade.
This makes the top surface of the insulation much cooler than it would have been without a radiant barrier and reducing the amount of heat that moves through the insulation into the rooms below.
R-Shield PLUS insulation is like “Shade”. How much electricity would you save if your roof was shaded? On a 90º day are you still going to run the air conditioner? Yes, It’s 90 degrees, but it WILL run less and more efficiently. However, on a 75º day the R-Shield PLUS might just keep you from having to run your A/C at all.
The best way to think of your home is like a giant refrigerator. It makes common sense that if you have two identical refrigerators and put one in the sun and one in the shade that the refrigerator in the sun will use MORE energy right?
Why is this? The air temperature is EXACTLY THE SAME whether in the shade or the sun. What happens is that the SURFACE TEMPERATURES of the refrigerator in the sun will be higher due to the radiant heat from the sun.
It may be only 70º outside, but the outside surface of the refrigerator could easily be 120º-SO as far as the refrigerator is concerned IT IS 120º. The same thing occurs in your attic. It may relatively cool – maybe 70º but if it’s sunny, the roof will heat up and then radiate heat down towards the insulation. The result is that the TOP of the insulation can be significantly HOTTER than the outside air temperature or the air temperature inside the attic. This is one reason we often need to run our Air Conditioners even on “mild” days.
R-Shield PLUS acts like “shade” in the summer. By installing a R-Shield PLUS, the radiant heat that would normally be ABSORBED by the attic insulation is now REFLECTED away. Using the refrigerator example, if we wrapped the refrigerator with radiant barrier foil and put it in the sun the SURFACE TEMPERATURE would only go up a few degrees compared to the 20º- 40º without the radiant barrier. This is almost like putting it in the shade. Ultimately it’s all about surface temperatures. The larger the difference between the inside and outside surface temperature, the more heat will flow in or out.
INSULATION LAYERS - Aluminum, Polyethylene backing, Closed-cell Polyethylene foam, Polyethylene backing, Aluminum
How it Helps in Cold Climates
On a cold winter day, your house’s heat rises and is absorbed into the attic insulation. At the same time the colder, denser air settles into your insulation from above. The heat in your home then moves to warm up the colder insulation while at the same time the colder air continues to settle in lower. With a R-Shield PLUS placed on the attic floor (on top of your insulation), much of the heat radiated from the rooms below is reflected back down into the home. R-SHIELD also keeps the cold, dense air from settling into your insulation and entering your house by acting as a thermal blanket. It’s called the “R-Value Myth” -The R-Value of insulation is tested in a lab and air movement is zero. We know that air flows quite nicely through fiberglass. Ever looked at most AC filters? Fiberglass right? In walls, for fiberglass to be fully effective, it must be surrounded on all six sides to minimize air infiltration. Now, look in your attic. The top of the insulation is wide open and exposed to air currents. This is why jackets have an outer/inner shell that is “windproof”. Take off the shell on a jacket and walk outside on a cold windy day. You will freeze your backside off.
Inside the attic, there can be a huge differential between the temperature inside the home. For example, if the attic is 20º and the living space is 70º you have a 50º difference. You get what is called “Convective Looping”. This is when cold, dense and heavy air falls through the insulation and displaces the warm air against the living space.
Installing R-Shield PLUS on top of the insulation acts like the windproof shell on a jacket. It helps minimize the convective looping within the insulation. Perforated R-Shield PLUS is NOT a vapor barrier. So, it WILL allow moisture in its vapor form to pass through.
The other reason R-Shield PLUS helps in cold climates is the reduction of radiant heat loss from the living space. It’s like when you wrap a potato with foil to keep it warm. The potato will not “emit” as much radiant heat. This is called “Emissivity” or the ability NOT to release heat. By laying the shield on top or your insulation, you help keep the heat “IN” by not releasing it in the form of radiant heat. This is why so many customers report a noticeable difference in comfort and fewer problems with rooms being hot and cold.
Frequently asked questions
Just like wrapping a baked potato in aluminum foil keeps a potato warmer longer by holding the heat in, covering your attic insulation with R-Shield PLUS holds the heat in the house. In the winter R-Shield PLUS works just like a space blanket, which, although very thin and lightweight holds your body heat in. A thin space blanket can keep you warmer than several heavy blankets.
R-Shield PLUS reflects the sun’s heat before it can warm up the insulation in your attic. When the insulation stays cooler, your house stays cooler. It may help to understand how R-Shield PLUS will work for you if you think of other things that perform in the same way; ASTRONAUTS SPACE SUITS – keep body heat in, and reflect the sun’s heat away.
No. R-Shield PLUS actually makes your present insulation more effective.
R-Shield PLUS is perforated. The tiny holes in R-Shield PLUS allow moisture to escape from you regular insulation.
Regardless of how much insulation you have in your attic, adding R-Shield PLUS could save on your heating and cooling expense, and keep you much more comfortable.