R Value Of Old Wood Garage Door

Overhead door corporation uses a calculated door section r value for our insulated doors.

R value of old wood garage door.

Shoppers may get the impression that this number is important and it is but most are unsure about what it is or why they should even pay attention to it when choosing a garage door. The higher the number the better. Really it s nothing more than a measure of the door s thermal resistance or ability to prevent heat loss. An insulated garage door can help reduce the transfer of heat or cold air into your garage and other areas of your home thus improving your home s overall energy efficiency.

When doing research on different types of garage doors you may have come across an r value measurement associated with. The r value is determined by the thickness of the door and by the materiel that the insulation is made of. R value of garage door insulation what is r value. For example the door s description may read 16 ft x 7 ft r value 6 5.

A 2 1 4 inch solid core wooden door for example has an r value of 3 70. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3. Clopay garage door r values depend on the door s thickness material and type of insulation and range from 6 3 to 20 4. The truth is that with today s methods of manufacturing wood garage doors by means of multiple layering processes wooden doors can be insulated quite effectively.

This feature means that the final product serves as a great thermal insulator. R values climb as thickness of the material increases. If you have ever shopped for a new garage door you have probably come across an r value. For example clopay has few different types of 3 lyres door steel back door and the r value rated between 9 18 4 the difference between the r values is caused by the thickness of the doors 1 model is 1 3 8 and the other model is 2.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. R value is a measure of thermal efficiency. The garage is often the largest opening to a house making it very vulnerable to weather extremes. Simply put this is a number that reflects the door s ability to withstand the transfer of heat through the door.

The technique of adding polystyrene insulation between layers of wood results in a high r value. The r value of a 1 3 4 inch wood door is 3 03. The higher the r value the greater the insulating properties of the door. The first step is to understand what the r value of a garage door actually means.

A stylish and secure garage door not only enhances your curb appeal it can help keep you safe.