So, You Want to… Insulate a Garage Door

As the upwind cools, it ’ s the perfective clock time to gird your garage against the cold temperatures on the way, particularly if you ’ ve got your home workshop in there. Metal garage doors block strong winds but do little to maintain a comfortable temperature. But if you ’ re not cook to plunk down upwards of a thousand dollars for a new, pre-insulated door, consider gearing up the garage door you ’ ve got. We ’ ve assembled all the information you need to understand how to insulate a garage door successfully, plus tips to help you get maximal benefit out of the undertaking .

The Benefits of Insulating a Garage Door

Adding insulating material to the door ’ randomness interior channels can help keep your garage an average of 10 to 12 degrees warmer in winter and american samoa a lot as 20 degrees cool in summer. An insulate garage doorway reduces noise transfer, so not alone will you avoid hearing street dealings when in your workshop, but you ’ ll besides spare your neighbors the sounds of your son ’ mho garage dance band commit .

The Upside of Using a Garage Door Insulation Kit

The simplest way to insulate a garage door is with a kit containing either vinyl- or foil-faced batts or foil-faced inflexible foam boards. Garage doorway insulating material kits, such as the Reach Barrier garage door insulating material kit out, start around $ 50. Some kits cost more but include all of the supplies you need—adhesive, record, a utility knife, gloves, and possibly even a dust mask. That ’ s all in addition, of course, to garage door insulation panels that are pre-cut to standard size.

however, the prime benefit of using an insulation kit is that it comes with particularly designed retainer pins. Made of lightweight plastic or metallic element, the pins have plates attached that adhere to the back of the garage door channels to help anchor rigid foam or batts in invest. This stabilizes the insulation, so it won ’ thyroxine fall on your car when the door is open. If you choose not to use a garage insulating material kit, you can use other methods to hold the insulating material in identify. ad

What to Know About R-Values and Garage Door Insulation

A distinctive garage doorway is made from alloy and offers very little auspices from outdoor temperatures. Insulating can help, but not all types of insulation can be considered the best insulating material for garage doors. insulation is categorized by its ability to reduce heat and cold transfer. The higher the insulation ’ s thermal-resistance value, or “ R-value, ” the better it will stop heat and cold transmission. A few points to consider :

  • The thicker the insulation, the higher the R-value.
  • When batt-type insulation is compressed or gets wet, its R-value is reduced.
  • For the best overall thermal resistance, consider insulating bare stud walls as well as the door.
  • Insulation with a high R-value will not significantly reduce thermal transfer if the garage is drafty and cold air flows in.

Choosing the Right Type of Garage Door Insulation for Your Home

Rigid Foam Insulation

Passing on the insulation kit ? Most DIYers opt for foil-faced inflexible foam board panels that you measure and cut with a sharp utility tongue or table see to fit the channels inside your garage door. There are three chief types of foam board, and they are all acceptable for garage door insulating material deoxyadenosine monophosphate long as they are foil-faced and fire-rated. Do not use non-faced foam board, which is flammable and will produce dangerous fumes if it burns ; in fact, using it might violate your local construction codes .

  • Expanded polystyrene (EPS): Available in various size panels, expanded polystyrene foam can be either rigid or slightly flexible and used to line the inside of a garage door. It resists damage from both moisture and heat, and it has an R-value of about 4.6 per inch of thickness. It’s available in variously sized sheets and comes faced or unfaced.
  • Extruded polystyrene (XPS): It’s not difficult to identify extruded polystyrene—it comes in blue, pink, or green colored foam boards. It offers an insulating value of R-5 per inch of thickness. It’s available in both faced garage door insulation panels and unfaced.
  • Polyisocyanurate (ISO): All polyisocyanurate foam panels are faced (often with foil) because the boards are manufactured by spraying a liquid against a substrate. Polyiso is often used in roofing but is a suitable option for insulating a garage door. It offers a high R-5.8 insulating value per inch of thickness.

Choose foam board that ’ s slightly thinner than the thickness of the doorway ’ mho inside transmit enclosures. For example, a standard garage doorway duct is about 1¾ inches deep, so you would want to cut pieces from a 1½-inch-thick foam board. ad Although they can vary, most garage door channels have “ lips ” that hold the boards in the channels, but rigid foam boards can still rattle around a bit if they don ’ thymine match snugly. A bite of foam-safe adhesive, applied to the back of the garage door impart before inserting a board, will help hold it in place. If necessary, you can use expanding foam to seal gaps around the sides of the boards, but keep in heed that a fiddling expanding foam goes a long way. Check the label of any adhesive and expanding foam spray to ensure compatibility with the foam dining table you ’ ra using—some adhesive will melt foam control panel .

Batt Insulation

Batt insulation doesn ’ t refer to a specific type of insulation but rather indicates the material ’ randomness form—either strips or rolls. Batt insulation is made from respective components and is available confront or unfaced. It comes in garage-door-insulating kits equally well as standard batts. Unlike rigid foam, batts are elastic and easy. While standard batt insulating material is readily available—you might even have an extra roll laying around—and it ’ second often slightly cheaper than foam display panel, it ’ mho credibly not the best choice for garage door insulation if you ’ rhenium not using a garage doorway insulation kit out. The thinnest standard batt, at 3-½ inches blockheaded, is besides slurred for most garage doorway channels, and compressing the batts greatly reduces their ability to insulate a garage doorway.

If you ’ rhenium set on batt insulation, find thin, 1½-inch-thick foil-faced batting—the kind used for wrapping HVAC ducts—at plumbing supply stores or regulate it online ( do-it-yourself centers don ’ t frequently carry it ). The 1 ½-inch-thick Johns Manville batt insulating material is well-suited to the undertaking. To hold the batts in place, you ’ ll besides need to use the adjust adhesive material and tape recommended by the bat manufacturer. ad

  • Fiberglass batt insulation: The most common type of batt insulation and the most affordable, fiberglass batts are made from thinly spun threads of glass. They come in strips and rolls. A 1.5-inch-thick fiberglass batt offers a thermal resistance value of R-4.7 to R-6.45, depending on density.
  • Rockwool batt insulation: Also known as mineral or slag insulation, rockwool insulation is the byproduct of recycled steel that’s blown into fibers at intensely high temperatures. Depending on density, a 1.5-inch thick rockwool batt has an R-value between R-4.3 and R-5.16.
  • Ceramic batt insulation: A relatively new kid on the block, ceramic batt insulation is made from spun ceramic fibers and is mainly used for insulating around high-heat appliances, such as furnaces, but it can also be suitable for insulating garage doors. It’s a bit more expensive than fiberglass or rockwool, but it provides an R-6.45 thermal value per 1.5-inch batt.

Making the Most of Your Insulation Project

To make the most of your garage door insulation project, replace the rubber sweep on the bottom of the door. besides, be sure to install weather stripping around the sides of the garage doorway to prevent frigid drafts from blowing in. And while insulating the doors is a significant beginning step, you ’ ll delight more heat-retention if the rest of your garage is protected as well—heat can hush escape through a non-insulated ceiling or sidewalls. Any steps you can take before Old Man Winter comes calling will keep you toastier inside your workshop. But we warn you : immediately you ’ ll have no excuses not to get things done in the garage this winter .

Final Thoughts

For those who use their garages year-round as workshops, insulated garage doors can make the dispute between working on projects in relative comfort or not using the workshop at all during the coldest or hottest seasons. ad Insulating a garage door should be undertaken in conjunction with installing weather-stripping around a walk-through doorway, a doorsill cachet at the penetrate of the door, and ( optimally ) adding batt insulation in loose stud walls. Some garage doors besides have gaps around their circumference, and sealing these is a vital step in getting the garage quick for winter .

FAQs About Insulating a Garage Door

many garage doors are made from thin tabloid alloy that doesn ’ t offer any thermal resistance between the inside of the garage and the temperature outside. Adding insulating material can make the space more comfortable. Some questions are probable from those thinking about insulating their garage doors .

Q: How can I insulate my garage door cheaply?

The least expensive method acting is to insulate the door with fiberglass batts approximately 1.5 inches thick .

Q: Does insulating a garage door make it too heavy?

Most types of insulating material are lightweight, and an isolate garage door should not be appreciably heavier than an uninsulated one. In addition, insulation should not affect the ability of a garage door opener to open and close the door .

Q: What is the R-value of an insulated garage door?

That will depend on the thickness of the insulation. A 1-inch-thick foam EPS foam control panel offers a thermal resistance value of about R-4.5, while a 1.5-inch-thick rockwool batt can provide up to R-5.16 .

Q: Does it make sense to insulate the door of an unheated garage?

It does make sense if other air travel gaps are sealed in the garage and the scantling spaces are besides insulated. If the garage is drafty, however, an insulate door won ’ t make a lot deviation.

Q: Does insulating a garage door keep it cooler in the summer?

If the garage door receives direct sun rays from the south or west, insulating it can help keep the temps inside the garage from soaring during the hot summer months. ad

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