Decoding R Value of Garage Doors
The garage constitutes the outside part of your house. Not only does it enhance the appeal of your house but it keeps your cars and other important stuff protected from external agents like possible intrusions or damage from natural elements. An insulated garage door helps to ward off such climate factors by reducing the transfer of heat into your garage which can then get inside your home. The R value is a means of measurement of insulation of such garage doors.
So what does R-value
So what does R-value signify? Specifically R value refers to the thermal resistance against the flow or heat. This factor is used by various manufacturers to show the energy efficiencies of their product. It is a term associated with the building and construction industry. The R-value is determined based on the insulation and chemical properties of the product. The higher the R-value more is the insulating capabilities of the material. It not only determines the amount of heat but it also helps in preventing damages against such huge levels of heat.
So what is the difference?
The insulation R values range from R-8 to R-32. The improvement in heat efficiency gradually increases from R-8 to R-32. But it would be wrong to assume that an R-16 valued garage door provides twice as much insulation against heat than a R-8 valued one. It depends on the material on how much insulation it is capable of providing. Polystyrene (styrofoam) and polyurethane (spray foam) are the most widely used materials in insulation. These two materials provide a different kind of insulation to the garage doors they are fitted against. You should check the R value of a garage door before buying it so that you can be certain of its insulating capabilities. Most doors have an R-value between R-12 to R-18 so ideally you should be looking at this range.