How To Insulate A Dog House

Dogs need protection from all kinds of weather. It makes sense when we see the essence of this the same way we prioritize our care when weather seasons change on us as humans.

During summer, we try to stay hydrated and cool and during winter, we work hard to stay warm and love our house heaters more and more.

Like every human, dogs need warm shelters when the weather is cold and when the weather is warm or hot, they need a cool shelter to beat heat irritations.

This is why insulating a dog’s house becomes inevitable and necessary as it helps to easily block out cold and heat.

A well-insulated dog house is important for dogs who spend time mostly outside, as you expect them to remain largely comfortable in weather conditions that can be harsh to them. 

To this end, you must ensure to choose the perfect insulation material for your dog’s house.

The first motivation must be to choose the materials that are easy to handle and install.

For example, there are people who work with rolled insulation, and that’s basically because it is much easier for them to manage since it can be trimmed with a pair of scissors easily.

People are mostly motivated here due to individual preferences. 

However, the core consideration should be about the weather condition the insulation is a response to.

Depending on the weather condition, making the right choice on the type of insulation must be done effectively.

But since the question of insulating a dog’s house is mostly about heat and warmth, it is important that it is done to keep the doghouse really warm.

Insulating A Dog House

So, as a general principle you can insulate your house by following the steps below:

Find A Dog House

This is the starting point. Finding a dog house which is big enough to be insulated.

By modifying and adding insulation material inside the house, you make the interior considerably smaller.

It is much easier to insulate the dog’s house if it is not furnished. In that sense, you can raise the dog house on a wooden pallet or on cement blocks (four of them, one in each corner).

The idea behind that is simple. It keeps the dog house off of the ground which allows it to stay dry and stops cold from the earth from absorbing in.

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Insulate And Patch Up The Floor, Walls And Roof

The goal is to make the dog house water, wind and weather proof so you have to make sure that the walls, roof and floor have no gaps or holes.

This would stop cold air from seeping in through the walls and floor.  Where there are gaps, you can close those gaps with caulking.

Make sure the caulking is completely dry after using it to close the gaps between the ceiling walls, and floor before you allow your dog back into space. The caulk should also not smell too badly.


Measure the dimensions of the walls in the dog house with a measuring tape.

Use a straight edge to mark the dimensions in pencil on panels of 1 1/2-inch thick rigid foam.

You can then cut out the foam sections to fit the walls using a utility knife.

Don’t forget, you can build a specially designated insulated dog house. You have to carefully measure the dimensions of the floor of your dog house.

It is very important to insulate the floor for that’s where the heat will escape from. If it is possible to remove the floor, it is easier to insulate it. For you can easily lift the floor out to install the insulation.

If it is difficult to remove the floor, carefully mark the measurements of it onto the plywood and cut the floor out.  The plywood must fit in place when this insulation is put in.

Cut Insulation

A pair of scissors or a craft knife can be used to cut the insulation to size. It is imperative to secure the insulation as a snug fit around the floor of the house and then nail it down to secure it to the house floor.

After this, the process must be repeated to measure and cut the insulation needed for the sides of the house walls.

Not just this but also the top in making sure that everything is closely and perfectly fitting as possible.

When putting the finishing touches, you must take a look to see if there are any rough edges. And if there are, you need to sandpaper that surface so as to take the edge off them.

The house will be a lot safer this way and also more comfortable for the dog.

If your dog is able to open one, you could make use of a vinyl flap (which is usually heavy) at the entrance to the doghouse.

It will possibly not be totally airtight, but will block the wind and help keep warmth inside the doghouse.

Insulating Material Options for Dog Houses

When you want to start an insulation work, you generally need the following materials closeby:

  • Nails and Hammer
  • Insulation Material
  • Caulking
  • Plywood Sheets
  • Sandpaper
  • Saw
  • Measuring Tape

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However, it is critical to say, first as an aside, that in discussing material options for your dog houses, there are some factors that you put into consideration.

The factors range from what the weather condition is like, to the dog house type and what your budget is, among other considerations.

That said, the commonest insulation material options, or perhaps the popular ones, are spray foam, fiberglass, and reflective insulation.

The world is picking up little by little on the conversation about climate change and how that impacts our lives, choices and experiences generally.

It is not different from how we conceptualize insulating dog houses whether plastic or wood dog houses, what type we favour and how we go about doing it.

It is important to mention quickly here that you would rarely find plastic dog houses that are not already insulated.

However, it is useful for many to still get a little boost when weather conditions get extremely unbearable.

If you are keen on getting your dog houses insulated, here are some common insulation types that could be considered:

Installing The Different Types Of Insulation

Fiberglass Insulation

The major composition of this is glass and it comes usually in rolls of differing lengths, widths and thicknesses.

The challenge with the fiberglass insulation for the dog house is that if the dog comes in contact with it and eats it in error it could be very harmful.

This is because when the fibers are broken, they become sharp and if a dog swallows it, it can damage a dog’s intestine and stomach.

Though fiberglass fibers aren’t exactly toxic, they could trigger irritation in the mouth. And, if ingested, could cause gastrointestinal obstruction.

Therefore, it is safe to ensure that the fiberglass is covered in strong plastic sheets, or that it is fully contained within the walls of the dog house.

Another thing to pay attention to is checking for (possible) leaks even before you install the insulation.

This is because, if it rains and the the fiberglass insulation gets soaked or wet, it will become ineffective.

The greater implication is that the dog house can become damaged if left unattended.

Advantages Of Using A Fiberglass Insulation

  • It is easy to install.
  • It is not expensive and very lightweight..
  • This allows it to hold up well when in use
  • It is not climate selective, as it works well for both cold and warm temperatures.

Disadvantages Of Using A Fiberglass Insulation

  • As stated above, it is harmful when breathed in.
  • It could cause skin irritation

Installing Fiberglass Insulation For Wooden Dog Houses

  • When setting up the ceiling and walls, fiberglass insulation is a good fit for those dog houses where there is a gap inbetween the inner walls and the outer walls.

What the insulation does here is to fill said gap, as it provides the useful, necessary protection that the dogs need against extreme weather conditions.

Where gaps between the walls or in the roof are nonexistent in the doghouse, the fiberglass can be stapled directly to the interior wall or ceiling.

That way, the insulation can then be covered to keep dogs from coming into direct contact with the insulation.

  • For the flooring, you could secure the fiberglass to the underside of the dog house.

After that, it can be covered with either a sheet of wood or durable plastic. The motivation here is to keep it safe from moisture and critters.

Fiberglass Insulation Installation for Plastic Dog Houses

  • For this, attach a protective plastic sheet to the insulation. Epoxy can be used to do this. That way, the plastic sheet keeps the dog from having direct contact with the insulation.
  • For flooring, the same technique used on the wood dog house can be replicated here.

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Reflective Insulation for Dog Houses

Reflective insulation is a metallic reflective foil usually made from aluminum foil or aluminized polyester and is attached to a variety of insulation materials like cardboard,  foam, or plastic film.

Advantages Of Reflective Insulation

  • It works well to reduce heat transfer.
  • It is non toxic and lightweight.
  • It doesn’t deteriorate with time as a result of moisture or compression.

Disadvantages Of Using A Reflective Insulation

  • It might not be the most useful method suitable for cold climates.
  • It is also not cost friendly.
  • There is also the ever present fear of electrical hazard.

Reflective Insulation Installation For Wood Dog Houses

  • When looking at the value for walls and ceilings, reflective insulation is very useful for walls that are in direct contact with sunlight and ceilings.

For the best cooling effect to be received from this reflective insulation, there needs to be an air pocket between the ceiling or walls and your insulation.

This will cause a natural airflow in the dog house. Installation method of the insulation varies as it is predicated on the material the reflective foil is attached to. Although, staples or epoxy will generally often work.

Reflective Insulation Installation For Plastic Dog Houses

  • Reflective insulation does not portend as a viable option for plastic dog houses at all. The reason is simple. It would be quite difficult to install and also concurrently allow proper air flow.

Expanding Foam Spray For Dog Houses

Expanding foam spray is a brilliant choice for insulating a doghouse, but it really isn’t the most cost-effective choice.

In addition, proper safety and spray equipment are often required, especially if the area intended for use is a more substantial space.

Spray foams are, however, perfect for small areas. If nothing else, but the holes and gaps in the dog house.

Advantages Of Using Expanding Foam Spray

  • It expands to fill most gaps.
  • It is not difficult to use in small spaces.
  • This method serves both warm and cold climates well.
  • It doesn’t absorb water and serves spaces well by eliminating drafts or leaks
  • It deters mold growth.

Disadvantages Of Using Expanding Foam Spray

  • There is the chilling possibility of the foam shrinking over time.
  • It requires experience to apply properly to large areas.
  • It is also expensive.
  • If installed incorrectly, the foam could be hazardous.

Spray Foam Insulation Installation For Wood Dog Houses:

  • If you are in the process of building a wood dog house, spray foam can be applied in between the interior and exterior walls of the walls, ceiling, and floor.

Spray Foam Insulation for Plastic Dog Houses

  • Foam insulation is best used for repair purposes only. When the proper repairs are done and over, it is essential that the foam is covered with protective materials.

These materials include plastic sheets, which can help reduce contact with the foam insulation in case it cracks or breaks.

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Insulation Kit for Dog Houses

Dog house insulation kits protect from both the heat and cold, but, unfortunately, are limited to specific brands of dog houses.

Advantages Of Insulation Kits

  • They are easy to install.
  • The machine is washable.
  • They are very useful and fitting for both warm and cold climates.
  • They provide a comfortable bed-like floor.

Disadvantages Of Using Insulation Kits

  • They do not fit all the dog houses
  • There are also legitimate concerns about its longevity.


The ideal insulated dog house is always perceived as big enough to accomodate a dog but also maintaining a fitted small frame for body heat.

The insulated dog house for body heat is important, as a dog that is cold is a potential victim of hypothermia.

So, the goal isn’t just to keep the dog house dry but to keep the body temperature as normal as possible. 

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