Exterior steel Doors r value

8) Long Panel Insulated R-Value 9 CHI Model 2294: Windsor & Other

Exterior Doors

Heat naturally flows from warmer spaces to cooler spaces. In the winter, heat flows from heated living spaces to the outdoors and to unheated spaces in your home such as attics, garages, and basements. In the summer, heat flows from the outside into your home. When heat is lost or gained due to poor insulation, your heating and cooling systems must work harder to maintain a comfortable temperature in your home, resulting in higher energy costs.

Exterior doors are responsible for some of this heat transfer, so it is important to purchase replacement doors that are well insulated, and have a good air seal. Older wooden doors have an R-value of about 2 while the R-values of most steel and fiberglass-clad replacement entry doors with polyurethane foam cores range from R-5 to R-6 (not including the effects of a window.) For example: A 1-1/2 inch thick door without a window offers more than five times the insulating value of a solid wood door of the same size

Door Ratings. The National Fenestration Rating Council (NFRC) is a non-profit organization that determines the energy performance ratings of windows, doors and skylights. When purchasing an exterior door, look for the NFRC label on the product. It lists the door’s performance ratings, including its R-value.

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Replacing an exterior door: A few things to consider

Material. Common materials for exterior doors are wood, steel, fiberglass, and composite materials.

Steel doors are durable and offer good insulation. A steel door with a polyurethane foam core has an R-value of about 6. Make sure any steel doors you buy are insulated, because if they are not, it will be worse than having a single-pane glass door!

Fiberglass doors insulate well, with R-values between 5 and 6, and can be more aesthetically pleasing than steel doors.

Composite doors are usually a bit more expensive. These doors are made to look like wood, with a wood veneer placed over a steel door with a one-inch foam core. Other models feature a wood panel over a ½ inch foam core.

Glazing. For exterior doors with windows or glass patio doors, you should consider investing in high-efficiency glazing.

There are many different types of glazing technologies, including: insulated (double-glazed, triple-glazed), low emissivity (Low-E) coatings, gas fills, heat-absorbing tints, reflective coatings, and spectrally selective coatings. The NFRC label on the product lists the type of glazing used, so you can see how each type performs.
Common features to look for are low-E coatings and gas fills. Low emissivity, or low-E, coatings allow light to come through the window while reflecting the inside heat back into the room. A double-pane window with a low-E coating can insulate as well as a triple-pane window with no low-E coating.

Gas fills are a technology that involves filling the space between each glass pane with harmless, inert gases (typically argon) that act as a better insulator than air. This improves the thermal performance of the door.

W. J. Dennis W. J. Dennis MJ Replacement Steel Door Bottom Weatherstrip
Home Improvement (W. J. Dennis)

Me too

2008-01-23 15:01:40 by fedguy

All my exterior doors are steel, supposedly for better security. (Which iis crap, sicne I also have 13 3-panel sliding glass doors to theoutside!)
They are all "insulated", but must have an R-value of -1.
Anyway, I got some cork floor tiles and glued them to the inside of each of the doors. Attractive, and gives good insulation.

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Ceco Door is the world's leading manufacturer of steel doors and frames. Offering a full line of quality custom and standard hollow metal doors and frames for new and retrofit construction projects in the commercial, educational and healthcare markets.

UniquExceptional Outdoor Fake , Dummy Security Camera with Blinking Light (Silver)
Photography (UniquExceptional)
  • This unit does contain a flashing light。
  • Dimensions : 5 1/2 x 3 x 2 1/2 inches (without rain shield). 7x3x3 inches with rain shield.
  • The camera requires 2 AA batteries that are not included.
  • Can be used Indoors or Outdoors

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