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Types of Garage Door Insulation

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Types of Garage Door Insulation

Insulation isn’t just about keeping your garage warm or cool. It is also an important factor in the durability and stability of your garage door. There are two different types of insulation used in garage doors: polystyrene and polyurethane. And each comes with added benefits for your garage door.

garage door insulation polystyrene and polyurethane

Polystyrene is the same material used for a foam cooler and is cut to size and then placed within a garage door panel. It is the most common type of insulation for 3 layer garage doors. For a 2 layer steel door, a layer of vinyl backing is applied to the polystyrene to make it easier to clean–but is susceptible to damage from inside the garage. Polystyrene adds rigidity to the door and typically has an R-value between R6–R10. It’s a good insulator for keeping garages cool in the summer and warm in the winter.

Polyurethane is a dense spray injected, expanding foam insulation. As it is sprayed in the door from both sides, it expands to fill every nook and cranny inside the door, which adds rigidity. Polyurethane is only available for 3 layer garage doors. On average, it offers an R-value of R12–R19. Polyurethane is good for extreme climates where the temperature outside can greatly affect the temperature inside of your garage.

You may be asking yourself, “ What is garage door R-value? And why should I care about it?” R-value is the measure of resistance to heat flow through a material. Insulation is meant to stop the movement and transfer of heat. However, heat can enter and leave your home in two ways: conduction, which R-value measures, and air infiltration, which it does not.

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Indianapolis | Marion County

(317) 614-0985

(317) 614-0985
Hamilton County

(317) 564-3373

(317) 564-3373
North Boone County

(765) 894-4273

(765) 894-4273
South Boone County

(317) 564-3373

(317) 564-3373
Johnson County

(317) 889-1661

(317) 889-1661
Hendricks County

(317) 203-6386

(317) 203-6386
Madison County

(765) 203-2272

(765) 203-2272
Hancock County

(317) 468-7270

(317) 468-7270
Shelby County

(317) 889-1661

(317) 889-1661
Morgan County

(317) 203-6386

(317) 203-6386
Precision Garage Door Service
Office: (317) 846-2332
14560 Bergen Blvd
Suite 100

Noblesville, IN 46060
Precision Garage Door - Westside Indy
Office: (317) 214-0467
7393 Business Center Dr
Suite 100

Avon, IN 46123
Precision Garage Door - Carmel
Office: (317) 844-9573
726 Adams St
Suite 160

Carmel, IN 46032