Can I add insulation to my existing garage door?

Absolutely! Adding insulation to your existing garage door is a great idea for improving energy efficiency and making your garage more comfortable. You don’t have to settle for a drafty or poorly insulated door. Companies like Jonathan’s Garage Door offer various insulation options that you can install yourself or have a professional do it for you. With better insulation, you can keep your garage cooler in summer and warmer in winter, making it a more pleasant space for activities or storage. Plus, it can help reduce energy costs in the long run.

Understanding Insulation for Garage Doors

Understanding insulation for garage doors involves recognizing the benefits of insulated versus non-insulated commercial garage doors, especially in regions like Seattle, WA. Insulated doors offer superior energy efficiency, temperature control, and noise reduction compared to non-insulated ones. In a climate like Seattle, where weather variations can be significant, insulated garage doors help maintain a comfortable interior environment while potentially reducing heating and cooling costs. This makes them a valuable investment for businesses in the area.

Reflective Insulation: 

This type of insulation typically consists of a reflective surface (such as aluminum foil) that reflects radiant heat away from the garage. Reflective insulation is effective in hot climates but may not provide sufficient insulation in colder regions.

Foam Board Insulation: 

Foam board insulation is made from rigid panels of foam, such as expanded polystyrene (EPS) or extruded polystyrene (XPS). It offers good thermal resistance and can be easily cut to fit the dimensions of your garage door.

Fiberglass Batt Insulation: 

Fiberglass batts are flexible insulation panels made from glass fibers. While they are commonly used in walls and ceilings, they can also be applied to garage doors for insulation purposes. However, fiberglass batts may not be as effective in sealing air leaks as other types of insulation.

Spray Foam Insulation: 

Spray foam insulation is a versatile option that expands upon application, filling gaps and providing an airtight seal. It can be applied directly to the interior of the garage door, creating a barrier against heat transfer and air infiltration.

Benefits of Insulating Your Garage Door

Insulating your garage door offers numerous benefits, including improved energy efficiency, temperature control, and noise reduction. It also helps protect belongings stored in the garage from extreme temperatures and moisture. Additionally, commercial doors services can provide professional installation and maintenance for insulated garage doors, ensuring optimal performance and longevity.

Now that you know the different types of insulation, let’s explore why you might want to insulate your garage door in the first place:

Improved Energy Efficiency: 

Insulating your garage door can help regulate the temperature inside your garage, reducing the workload on your HVAC system and lowering energy bills.

Increased Comfort: 

A well-insulated garage is more comfortable to work in, especially during extreme temperatures. It can also prevent cold drafts from entering your home through the garage.

Noise Reduction: 

Insulation can dampen noise from outside, making your garage quieter and more conducive to activities like woodworking or DIY projects.

Protects Belongings: 

If you use your garage for storage, insulation can help protect items from extreme temperatures and moisture, preserving their condition over time.

Enhanced Home Value: 

An insulated garage door adds value to your home, as it demonstrates energy efficiency and attention to detail in home maintenance.

Steps to Add Insulation to Your Garage Door

When adding insulation to your garage door, consider residential doors services for expert guidance. Start by measuring the door panels and selecting the appropriate insulation material, such as foam board or reflective insulation. Apply adhesive if necessary and install the insulation panels securely. Seal any gaps around the edges and test the door for smooth operation. Residential doors services can ensure a proper and effective insulation solution tailored to your garage door.

Now, let’s walk through the steps involved in adding insulation to your existing garage door. Keep in mind that the specific process may vary depending on the type of insulation you choose and the design of your garage door.

Step 1: Gather Supplies

Before you begin, gather the necessary supplies, which may include:

Insulation material (foam board, reflective insulation, fiberglass batts, or spray foam)

  • Tape measure
  • Utility knife or scissors
  • Adhesive (if required for your chosen insulation)
  • Protective gear (gloves, goggles, mask)

Step 2: Measure and Cut Insulation

Measure the dimensions of each garage door panel where you plan to install insulation. Use a tape measure to ensure accuracy. If you’re using foam board or reflective insulation, cut the panels to fit each panel of the door using a utility knife or scissors. For fiberglass batts, cut them slightly larger than the panel size to ensure a snug fit.

Step 3: Apply Adhesive (if necessary)

If your chosen insulation requires adhesive for attachment, apply it to the back of each panel according to the manufacturer’s instructions. Make sure to use an adhesive that is suitable for the specific type of insulation you’re using.

Step 4: Install Insulation

Carefully place each insulated panel onto the corresponding garage door panel. Press firmly to ensure proper adhesion or fit. For spray foam insulation, follow the manufacturer’s guidelines for application, ensuring even coverage and proper sealing of gaps.

Step 5: Seal Edges (if necessary)

If there are gaps around the edges of the insulated panels, use foam sealant or weatherstripping to seal them and prevent air leakage. This step is crucial for maintaining the effectiveness of the insulation.

Step 6: Test and Adjust

Once all panels are installed and sealed, test the garage door to ensure smooth operation. Make any necessary adjustments to ensure that the added insulation does not interfere with the door’s movement.

Step 7: Optional Finishing Touches

If desired, you can add a layer of reflective insulation or foam board to the interior surface of the garage door for additional thermal resistance. This step is optional but can further enhance insulation properties.

Considerations and Tips

When considering insulation for your garage door, it’s crucial to weigh garage door material options, particularly for the Pacific Northwest region. Materials like steel, aluminum, wood, and composite offer varying levels of insulation, durability, and aesthetics suitable for the PNW’s climate. Steel and composite doors are often preferred for their durability and insulation properties, making them well-suited for the region’s frequent rain and temperature fluctuations. Consulting with local experts can help determine the best material for your specific needs.

Choose the Right Insulation: 

Consider factors such as climate, budget, and insulation R-value (thermal resistance) when selecting the type of insulation for your garage door.

Safety First: 

Wear protective gear, such as gloves, goggles, and a mask, when handling insulation materials to avoid skin irritation and respiratory issues.

Follow Manufacturer Instructions: 

Always follow the manufacturer’s instructions for installing insulation, adhesive application, and safety precautions.

Check for Air Leaks: 

Inspect the garage door and surrounding areas for air leaks after installation. Seal any gaps or cracks to maximize energy efficiency.

Professional Installation: 

If you’re unsure about DIY installation or have a complex garage door design, consider hiring a professional installer to ensure proper insulation and functionality.


Can you insulate an existing garage door?

Yes, you can insulate an existing garage door. The process involves adding insulation panels or filling cavities with insulating materials like foam board, reflective insulation, fiberglass batts, or spray foam. Proper insulation can improve energy efficiency, regulate temperature, and reduce noise in your garage space.

Can you add insulation to a non insulated garage door?

Yes, you can add insulation to a non-insulated garage door. This typically involves attaching insulation panels or filling cavities with insulating materials such as foam board, reflective insulation, fiberglass batts, or spray foam. Doing so can improve energy efficiency, temperature control, and reduce noise levels in your garage.

How do you insulate a garage that is already built?

To insulate an already-built garage, start by assessing the existing insulation, if any, and identifying areas that need improvement. Common methods include adding insulation to the walls and ceiling, sealing gaps and cracks, and insulating garage doors. Use insulation materials such as fiberglass batts, spray foam, or rigid foam board, and consider hiring a professional for complex installations or to ensure optimal insulation coverage.

What is the cheapest way to insulate a garage door?

The cheapest way to insulate a garage door is by using reflective insulation or foam board panels. These materials are cost-effective and relatively easy to install yourself. However, keep in mind that while they may be budget-friendly, they may not offer the same level of insulation as higher-end options like spray foam or fiberglass batts.

What is the cheapest insulation for a garage?

The cheapest insulation for a garage is typically fiberglass batt insulation. It’s widely available and relatively inexpensive compared to other insulation materials. However, keep in mind that the overall cost may vary based on the size of your garage and the amount of insulation needed.


Adding insulation to your existing garage door is a worthwhile investment that can enhance energy efficiency, comfort, and overall functionality. By choosing the right type of insulation and following proper installation techniques, you can enjoy a more insulated and comfortable garage space while reducing energy costs. Whether you opt for foam board, reflective insulation, fiberglass batts, or spray foam, the key is to prioritize quality and thoroughness for optimal results. With a well-insulated garage door, you’ll reap the benefits for years to come.

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