What Does R-Value mean The best selling garage doors will boast their R-Value. The R-value is a measure of thermal resistance [1] used in the building and construction industry. Under uniform conditions it is the ratio of the temperature difference across an insulator and the heat flux (heat transfer per unit area, $\dot Q_A$) through it or $R = \Delta T/\dot Q_A$.The R-value being discussed is the unit thermal resistance. This is used for a unit value of any particular material. It is expressed as the thickness of the material divided by the thermal conductivity. For the thermal resistance of an entire section of material, instead of the unit resistance, divide the unit thermal resistance by the area of the material. For example, if you have the unit thermal resistance of a wall, divide by the cross-sectional area of the depth of the wall to compute the thermal resistance. The unit thermal conductance of a material is denoted as C and is the reciprocal of the unit thermal resistance. This can also be called the unit surface conductance and denoted by h.[2] The bigger the number, the better the building insulation's effectiveness. AREN'T YOU GLAD YOU ASKED!!!! What does this mean to the average home owner looking for a quality garage door. Here's the break down. There are several factors that would make R-Value more or less significant. How often you use the garage door, what you use the garage space for, and how well the actual garage is insulated. As a professional Garage Door Dealer its our job to survey and assess the over-all importance that R-Value has. Don't stress, it will be the one of the easier decisions in the whole process
 UPDATED> 09/20/12       As an avid I-phone user and Tech-Junkie the short answer is yes you can use your I-phone to open a garage door.  The truth is you can probably turn on and shut down and open and close more devices than you think. The auto industry has enabled technology to start your car with Smart Phones and Smart House technology has enabled complete house management from a smart phone, but what’s practical and what’s not. Unless you have 100-150 thousand dollars to devote to Smart house technology so you can dim the lights from Bali this may be impractical. Unless you want to pay the monthly charges for On-Star then starting your car from work may be impractical. If opening your garage door from where ever using your homes Wi-Fi and some store bought add on’s and some in house wiring and some creative programming sounds practical then down load the X10 Commander App to your phone $9.99 go online and get a USB to RF X10 interface and an X10 PUM01 low Voltage Controller device, run some low voltage wiring from the garage door button to the controller. Program the Software, set it up to be ALWAYS running and “PRESTO” open and close your garage door all day long. I have a nice mini remote on my key-chain ( under 30.00 ) and it works when I am in front of the garage door where I should be when opening it and that leaves me plenty of time to use my I-Phone for what it was intended for …to play ANGRY BIRDS . Updated> OK so the I-phone does almost anything now, I love 6.0! No, I don't need the I-Phone-5 because the 4S works just fine. OK so unless you are ready to change your Automatic opener and drop anywhere from$400.00 - \$700.00 to get your I-Phone to close your garage door, then simply do this " CLOSE YOUR GARAGE DOOR WHEN YOU LEAVE THE HOUSE!!!"  if your life is that kaotic that you could pull away with the LARGEST door  to your house open, then you need something your I-Phone cant't give you. If you are that much a Tech-Junkie then implement smart house technoligy into your entire home and open and close everything with your I-Phone