How To Insulate A Plastic Dog House: Eight Effective Methods

Do you know how to insulate a plastic dog house? I will explore various methods to insulate a plastic dog house effectively. 

How To Insulate A Plastic Dog House

Ensuring your dog's well-being in varying weather conditions is crucial, especially if they spend significant time outdoors. So, how to insulate a plastic dog house? A well-insulated dog house is a key element in providing comfort for your furry friend. I will explore various methods to insulate a plastic dog house effectively. 

Whether starting from scratch or looking to enhance an existing dog house, these methods are designed to keep your pet cozy without requiring a significant financial investment.

Choosing the Right Dog House

A well-constructed winter dog house will have features that provide optimal insulation and protection against the elements. Refer to our detailed guide on the best winter dog houses to find options tailored to ensure warmth and comfort for your canine companion.

How to Insulate a Plastic Dog House | Different Ways to Insulate Your Dog's House

So, how to insulate a plastic dog house? Insulating your dog's house is crucial for providing comfort in various weather conditions. Explore different methods to ensure optimal insulation.

Options include affordable fiberglass insulation, reflective foil for efficient heat reflection, bubble wrap for simplicity, polystyrene foam for accessibility, expanding foam spray for versatility, carpet for added warmth, wood for basic insulation, and even water for surprising effectiveness.

Choose the method that best suits your dog's needs and your resources to create a cozy retreat for your furry friend.

1. Fiberglass Insulation

Fiberglass insulation, commonly recognized as the pink material found in attics, is a versatile and cost-effective option for insulating your dog's house. Known for its ease of installation, fiberglass insulation does not require specialized tools—just a pair of heavy-duty scissors to cut it to size.

However, caution is necessary as fiberglass can irritate the skin and lungs, especially if the fibers become airborne. To ensure your dog's safety, it is crucial to seal the insulation effectively.

If the dog house has hollow walls, simply stuffing the insulation inside is an option. Tack or staple the fiberglass fabric to the interior for solid walls and cover it with plastic or wood panels to prevent direct contact.

2. Reflective Foil

Reflective foil, designed to reflect body heat, is an efficient and straightforward insulating material. This type of insulation is easy to install, relatively affordable, and highly effective. It complements other insulation materials, allowing for a layered approach to maximize warmth.

For instance, combining reflective foil with fiberglass insulation provides a comprehensive solution. Adhere the foil to the inner walls of the dog house and layer additional insulation, such as fiberglass foam. To secure the insulation, cover it with wood or plastic panels, ensuring your dog cannot access or damage it.

3. Bubble Wrap

Bubble wrap, when specially coated with aluminum, becomes an excellent insulator due to the air pockets within it. This material is effective and easy to install without the need for specialized tools.

It's important to clarify that I am referring to specialized bubble wrap designed for insulation, not the typical packaging material. Secure the bubble wrap using tacks, staples, or glue, and ensure it is protected behind wood or plastic panels to prevent your dog from causing any damage.

4. Polystyrene Foam

Commonly known as Styrofoam, polystyrene foam is a go-to material for insulation due to its affordability and accessibility. It is frequently used in insulating products, including coffee cups and coolers.

While Styrofoam may not be the most durable material, it remains a practical choice when applied correctly. Cut foam panels to match the interior dimensions of the dog house and attach them to the walls, ceiling, and floor. To enhance durability and protect against wear and tear, cover each panel with similarly sized pieces of wood or durable plastic.

5. Expanding Foam Spray

Foam sprays, such as Great Stuff Insulating Foam Sealant, offer a unique and effective method for insulating dog houses. Although it may not be the most affordable option for large dog houses, it proves cost-effective for smaller structures.

Begin by cutting wood or plastic panels to fit the inside of the dog house, leaving space between the panels and the walls. Create holes to allow for the application of the foam spray. If the dog house features hollow walls, you can bypass creating panels and directly fill the internal cavity with the expanding foam. Plan, as the foam begins expanding immediately upon application.

6. Carpet

Carpet may not be the most budget-friendly option, but it is a viable insulator for your dog's house. Beyond its insulating properties, carpet can add an extra layer of comfort. Consider using outdoor carpets for enhanced durability.

Stapling the carpet into place is a practical installation method, though lightweight carpets may adhere to the walls using a strong glue or adhesive. To potentially reduce costs, explore the availability of discounted carpets from local suppliers, accepting various colors and patterns.

7. Wood

While wood alone may not be the most efficient insulator, it is a simple and readily available option. Installing wood panels in the dog house provides basic insulation, especially when maintaining a small air gap between the panels and the walls.

Softwoods, such as pine or cedar lumber, contain more small air pockets, making them ideal choices for this application. Measure the interior dimensions of the dog house and cut panels for each wall, the roof, and the floor. Applying a high-quality water sealant before installation enhances the wood's durability and improves its insulating properties.

8. Water

Surprisingly, water can be an effective insulator due to its ability to retain warmth for extended periods. While this recommendation may seem unconventional, using small water bottles strategically can contribute to insulation.

Secure the water bottles with wood or plastic panels, ensuring a snug fit to prevent shifting. Although water may freeze in extremely cold weather, ice is an insulator. It's advisable to bring your dog indoors during sub-freezing temperatures. To minimize the risk of bottle breakage, consider partially emptying each bottle before installation. Now you know the answer - how to insulate a plastic dog house?


Insulating a plastic dog house doesn't have to be daunting; it certainly doesn't have to break the bank. By choosing the right insulation method that aligns with your resources, you can ensure your dog has a comfortable retreat from temperature extremes. These insulation techniques keep your dog warm during winter and contribute to their overall well-being. 

Remember to tailor the method to your specific dog house and consider your pet's unique needs. A well-insulated dog house ensures your furry friend remains comfortable and content regardless of the weather conditions. I hope now you know, how to insulate a plastic dog house?

Looking for the Best Insulation For Dog House During Winter Season? Check our picks below and buy one today👇

Best Insulation For Dog House During Winter Season
Ensure your furry friend stays cozy with the best insulation for a dog house. Explore top choices for comfort and warmth for optimal pet care!