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Mixing interior and exterior paint

Can You Mix Exterior And Interior Paint? [Easy Guide]

What are the Interior and exterior paint? Interior paints are those paints that are used to paint inside the house or any Building and exterior paints are used outside the building or any house. Exterior colors are costly in comparison to interior paints. Can you mix exterior and interior paint? The answer is yes; you can mix exterior paint with interior paint. But the best thing is to avoid interior paint with exterior paint because sometimes results are not good and you waste both paints. If you want to mix both colors, make sure that both color’s bases should be the same only at that time, it works nicely.

Can you mix interior with exterior paint?

Mostly what happened is that we painted and few paints were left, and it’s not easy to store them separately, so we mixed them and kept them. The question arises can I mix interior and exterior paint? You may not consider that entirely different paint sorts contain different formulations and chemicals. The various colors are made of totally other substances, and once mixed along, will react; otherwise, can you mix interior with exterior paint?. You’ll be able to combine colors of a constant kind solely. This implies that oil-based paints will solely be combined with different oil-based paints and water-based with water-based paints.

This results from water and oil won’t combine properly, which means you’re left with clumpy and inconsistent paint. 

Mix the paints rather well. If you notice any clumps while mixing, you can strain the paint through leotards—store Associate in Nursing leftover paint in an airtight container.

What happens if you mix interior and exterior paint?

Mixing interior and exterior paints:

Let’s look at what you’ll expect if you combine interior and exterior paint. We’ve listed several of the essential concerns that you just ought to assess before seeking about it. There is a unit with such a large amount of variables once intermixture out of doors and indoor paint because of the variations in paint formula; however, below the area unit, some common issues use Interior paint outside. 

A combination of interior and exterior paint will build; applying the color to a surface is very tough. Paint firms fastidiously formulate their paint for optimum beauty and simple application. However, after you combine two cans, ingredient proportions shift off balance, inflicting issues. 

  • Exposure to volatile materials:

Exterior paint’s high durability usually comes from volatile organic compounds (or VOCs). VOCs emit robust smells and typically smoke. Even with a solid interior mechanical system, exterior paint remains a dangerous health risk for you, your family, and your pets since you would be inhaling volatile organic compounds.

And even in tiny amounts, these compounds will cause and exacerbate each metabolic process. It’s merely not worth the risk once it is a choice between keeping you and your family healthy and having to shop for additional paint for your interior surfaces.

  • Non-durable:

A combination of doors and indoor paint can typically end in a shorter period than if you used the right painting style in its supposed location. Exterior paint is usually versatile to account for the forceful temperature changes it experiences. However, it cannot impede everyday wear and tear seasoned inside. 

Indoor paint is a lot rigid and straightforward to wash. Combining exterior and interior paint is appropriate for neither doors nor indoor use. Outside it’s too strict attributable to the inside paint addition, and inside it’s too soft attributable to the outside paint addition.

  • Fading:

The different ingredients utilized in exterior and interior paint build any decision to mix them inconsistently. The formulas for the out of doors and indoor paint area units are too different, inflicting issues with the paint bases, finishes, and colors.

  • Lack of effectiveness

A paint’s end, commonly referred to as radiancy, is the paint’s final surface look. Generally, paints with less radiancy harm additional quickly than ones with higher reflectiveness. 

Typically you’ll combine paints with similar finishes while not having much of a retardant. 

Once combining two paints with slightly completely different finishes, the finished mixture usually seems boring and less reflective than the very best gloss paint employed in the mix. 

It’s best to avoid mixing two paints with considerably wholly different finishes, like combining matte with color. The distinction, in the end, is just overlarge and can usually not integrate well or look sensible on the surface.

Is exterior and interior paint the same?

For sure, interior and exterior paints are different. Both are used for other reasons, so the ingredients of both are different. Different colors have entirely different properties and are developed for various functions. Interior paint is created to be clean, resist staining, and permit cleansing. Exterior paints are designed to resist attenuation and mildew. 

Interior paint is created to hide the within of your home. It’s not as sturdy as exterior paint; however, it will stand up to scrub and laundry, although not on a relentless basis. It’s not waterproof, though, and It won’t stand up to the weather.

What is the difference between interior and exterior paint?

Difference between interior and exterior house paints

Exterior paint is durable, waterproof,

Weather resistance and VOCs level are high. Whether interior paints are very low in VOCs and Interior paints dry slowly compared to the exterior, these paints are not needed to be weather resistant.


Is exterior paint thicker than interior paint?

Interior paints are thinner than exterior paint, so they don’t adhere to the wall or surface, so you need more paint coating. But exterior paints are thicker and give good coverage to the outer shell.


Exterior paint is made to face up to years of torment from the weather. It’s additionally created powerful enough to not part from contact, like twigs being thrown against your house by the wind or bugs flying into the wall. As such, it’s way more sturdy than interior paint. However, interior paint is pretty sturdy as well; ready to stand up to occasional cleaning and cleanup.

Toxic materials:

Interior paint ought to have an occasional or zero VOC (Volatile organic compounds). This is often necessary for protecting the air quality in your home. Low or zero VOC facilitates cutting back your health risks.

Exterior Paints unharness additional VOC because it cures, creating it unsafe for indoor use.


Interior paint is more glossy and smooth than exterior paint because interior paints are used for the interior of any home, and it’s highly recommended that walls be smooth, glassy, and beautiful. On the other hand, exterior paints are needed for durability, weather resistance, and moisture free.

Is exterior paint more durable than interior?

Interior paints are not water resistant, their adhesiveness is not as good as exterior paint, it’s not temperature resistant, and durability is also not too good. On the other side, exterior paints are more durable, water resistant, and more adhesive on outer walls. They can stay on outer walls long without losing their shine and color.

How long will interior paint last on the exterior?

There are several varieties of paints. However, a long paint job can last just like the paint’s quality and the condition of the surface you are painting. In general, interior paint can last from five to ten years.

You can expect your exterior paint to last between five to seven years. Confine mind that your exterior paint is frittered with regional climate conditions, the fabric painted, and also the variety of paint used.

Is exterior paint more expensive than interior paint?

Yes, exterior paints are more expensive than interior paints as exterior paints have some more ingredients which give more toughness, durability, and temperature resistance to the exterior paint. On the other hand, interior paints are basic and not so expensive.

Can you mix paints with different finishes?

Mixing paints with different finishes

You can combine two similar paints, semi-gloss, and gloss, quickly. Still, two different pigments can not be mixed easily because their texture and finish are different, so it’s entirely possible that you didn’t get the best outcome. It would help if you did not mix flat paint with semi-gloss. It’s not a good combination.

Can I Use Interior Paint for Exterior Surfaces?

Use interior paint outside? Interior paints are not similar to exterior paints. Exterior paint is tough, moisture-proof, sunproof, and water resistant, but on the other side, interior paint doesn’t have all these qualities. It may crack and give an even look if we use it on exterior walls, so interior paint is not a good choice for the external surface.


Now all your queries of can I mix interior and exterior paint, might have come to an end. At last, we can say that sometimes we can mix exterior paint with interior paint but always mixing these two different paints does not work. Both the colors have different qualities which do not suit each other. Interior paints are not perfect for exterior surfaces, and in the same way, exterior paint is not suitable for interior.

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