How To Make Interior Paint Into Exterior Paint?

Looking to transform your interior paint into exterior paint? With a few simple steps, you can successfully adapt your existing interior paint for outdoor use. By selecting the right type of paint, preparing the surface properly, and applying a weather-resistant finish, your interior paint can withstand the elements and enhance the beauty of your exterior space. Let’s delve into the process of making your interior paint suitable for the great outdoors.

how to make interior paint into exterior paint

Factors to Consider When Converting Interior Paint to Exterior Paint

When it comes to painting the exterior of your home or any other outdoor surfaces, it’s important to choose the right type of paint. While interior paint is designed for indoor use, it may not be suitable for exterior applications. Converting interior paint to exterior paint requires careful consideration of several factors to ensure a long-lasting and weather-resistant finish. In this section, we will explore the key factors that should be taken into account when making this conversion.

1. Durability and Weather Resistance

Exterior paint needs to withstand harsh weather conditions such as rain, sunlight, wind, and extreme temperatures. Unlike interior paint, which is primarily designed for decorative purposes, exterior paint should provide protection against these external elements. Look for paint that is specifically formulated for outdoor use, as it will have additives that enhance durability and weather resistance.

2. UV Protection

The sun’s UV rays can cause interior paint to fade and deteriorate quickly when exposed to direct sunlight for long periods. When converting interior paint to exterior paint, it’s crucial to choose a paint that offers excellent UV protection. Look for outdoor paints that have UV-resistant properties to prevent fading and ensure long-term color retention.

3. Mildew and Mold Resistance

Exterior surfaces are more prone to moisture buildup, which can lead to the growth of mildew and mold. To prevent these issues, it’s important to select a paint that has mildew and mold-resistant properties. These paints typically contain additives that inhibit the growth of fungi, ensuring that your exterior surfaces stay clean and protected.

4. Flexibility and Expansion

Exterior surfaces are subject to constant expansion and contraction due to temperature fluctuations. Unlike interior surfaces, which remain relatively stable, exterior surfaces expand in warmer weather and contract in colder temperatures. When choosing exterior paint, opt for a product that is flexible and can accommodate these movements without cracking or peeling.

5. Breathability

Exterior surfaces need to allow moisture vapor to escape to prevent issues such as blistering, cracking, and peeling. Look for breathable exterior paint that allows water vapor to pass through the paint film, reducing the risk of moisture-related problems. This is particularly important for stucco, brick, or cement surfaces that are more prone to trapping moisture.

6. Application and Coverage

While interior and exterior paints have different formulations, it’s still essential to consider ease of application and coverage when converting interior paint to exterior paint. Exterior paints should provide good coverage, hiding surface imperfections and offering a smooth finish. Consider the application method and surface preparation required for the specific type of exterior paint you choose.

7. Color Selection

When converting interior paint to exterior paint, keep in mind that color can change when exposed to outdoor lighting conditions. Before finalizing your color selection, it’s a good idea to test small areas or consult with a professional to ensure that the color appears as desired in natural light.

In summary, converting interior paint to exterior paint involves considering several important factors. It’s crucial to choose a paint that offers durability, weather resistance, UV protection, mildew and mold resistance, flexibility, breathability, and ease of application. By taking these factors into account, you can ensure a successful transition from interior to exterior paint and enjoy a beautiful, long-lasting finish for your outdoor surfaces.

Essential Preparations for Converting Interior Paint for Outdoor Application

When it comes to painting the exterior of your home, it’s important to choose the right type of paint that can withstand the harsh weather conditions. While interior paint is designed for indoor use and may not be suitable for outdoor application, there are certain preparations you can take to convert interior paint for outdoor use. In this section, we will outline the essential steps you need to follow to ensure a successful conversion.

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1. Choose the Right Paint

The first step in converting interior paint for outdoor application is to select the appropriate type of paint. Look for exterior paints that are specifically formulated to withstand UV rays, moisture, temperature changes, and other environmental factors. These paints are designed to provide long-lasting protection and durability, making them ideal for outdoor use.

2. Clean and Prepare the Surface

Before applying the paint, it’s crucial to clean and prepare the surface properly. Use a power washer or a scrub brush to remove dirt, debris, and any loose paint. For surfaces with mold or mildew, use a mixture of bleach and water to kill the spores and prevent regrowth. Allow the surface to dry completely before moving on to the next step.

3. Prime the Surface

Priming the surface is an important step in converting interior paint for outdoor use. Apply a high-quality exterior primer to create a smooth and even base for the paint. Priming helps the paint adhere better to the surface and improves its durability. Make sure to choose a primer that is compatible with both the interior paint and the exterior surface.

4. Apply Multiple Coats of Paint

When applying the paint, it’s recommended to apply multiple thin coats rather than one thick coat. This allows for better coverage and helps the paint to adhere properly. Follow the manufacturer’s instructions for the recommended drying time between coats. Be sure to apply the paint evenly and smoothly using a brush, roller, or sprayer to achieve a professional-looking finish.

5. Seal and Protect

After the paint has dried, it’s important to seal and protect the surface to ensure its longevity. Apply a clear topcoat or a weatherproof sealer to provide an extra layer of protection against UV rays, moisture, and other elements. This will help to prevent the paint from fading, peeling, or chipping over time.

6. Regular Maintenance

Even with proper preparations and conversions, it’s essential to regularly maintain the painted surface. Inspect the paint for any signs of damage or wear and touch up as needed. Clean the surface periodically using a mild detergent and water to remove dirt and grime. This will help to extend the life of the paint and keep it looking fresh and vibrant.

In summary, converting interior paint for outdoor application requires careful preparation and the use of appropriate materials. By choosing the right paint, cleaning and preparing the surface, priming, applying multiple coats, sealing, and regular maintenance, you can successfully convert interior paint for outdoor use and enjoy a beautiful and durable finish on your home’s exterior.

Choosing the Right Exterior Coating for Your Adapted Interior Paint

When it comes to giving your home a facelift, one of the most effective and affordable ways is by painting the exterior. But before you jump in and start painting, it’s important to choose the right exterior coating for your adapted interior paint. The right coating will not only enhance the aesthetics of your home but also provide protection against the elements.

1. Consider the Climate

The climate in your area plays a significant role in determining the type of exterior coating you should choose. If you live in a region with extreme weather conditions, such as heavy rain or intense sunlight, opt for a coating that offers superior durability and resistance to fading. On the other hand, if you reside in a more temperate climate, you can choose a coating that provides adequate protection without the need for extreme durability.

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2. Evaluate the Surface

Before selecting an exterior coating, assess the condition of the surface you will be painting. Is it smooth, rough, or uneven? Different coatings are designed to adhere to different surfaces, so it’s crucial to choose one that is compatible with your exterior walls. If your walls have imperfections or cracks, consider a coating that has filling and repairing properties to ensure a smooth and flawless finish.

3. Determine the Preferred Sheen

Exterior coatings come in various sheen levels, including flat, satin, semi-gloss, and high-gloss. The sheen you choose can have a significant impact on the overall appearance of your home. Flat sheen offers a matte finish and is ideal for concealing imperfections, while high-gloss sheen provides a shiny and reflective surface. Consider your personal preference and the style of your home when selecting the sheen level.

4. Research the Coating Options

With numerous exterior coating options available in the market, it’s essential to do your research. Look for coatings that are specifically formulated for exterior use and offer features such as weather resistance, UV protection, and mold and mildew resistance. Read customer reviews and consult with professionals to gain insights into the performance and durability of different coatings.

5. Consult with Professionals

If you’re unsure about which exterior coating to choose, it’s always beneficial to seek advice from professionals. Contact a reputable paint store or consult with a painting contractor who can guide you in selecting the right coating based on your requirements, preferences, and budget. They can also provide valuable tips and recommendations on surface preparation and application techniques to ensure a successful paint job.

6. Consider Long-Term Maintenance

When choosing an exterior coating, it’s crucial to consider the long-term maintenance requirements. Some coatings may require more frequent touch-ups or reapplication, while others offer long-lasting protection with minimal maintenance. Evaluate the expected lifespan of the coating and factor in the cost and effort associated with its upkeep to make an informed decision.


Choosing the right exterior coating for your adapted interior paint is a crucial step in achieving a successful and long-lasting paint job. Consider the climate, evaluate the surface, determine the preferred sheen, research coating options, consult with professionals, and consider long-term maintenance. With careful consideration and the right coating, you can transform the look of your home and ensure its protection for years to come.

5. Tips and Tricks for Successfully Transforming Interior Paint into Exterior Paint

When it comes to repainting the exterior of your home, there are several factors to consider, including choosing the right paint. While many paints are specifically designed for exterior use, you may find yourself in a situation where you need to use interior paint for your exterior project. Although it is not recommended, with the right techniques and precautions, you can successfully transform interior paint into exterior paint. Here are some tips and tricks to help you achieve a lasting and satisfactory result:

1. Consider the Specific Conditions

Before attempting to use interior paint for your exterior project, it’s important to assess the specific conditions your paint will be exposed to. Factors such as temperature variations, humidity levels, and exposure to sunlight can significantly affect the durability of your paint. Interior paints are not formulated to withstand these harsh conditions, so it’s crucial to understand the risks involved.

2. Choose High-Quality Interior Paint

If you decide to proceed with using interior paint for your exterior project, it’s essential to select a high-quality paint that offers better resistance to fading, cracking, and peeling. Look for interior paints that have a higher gloss finish as they tend to be more durable and provide better protection against the elements. Additionally, opt for a paint specifically designed for high-traffic areas, as these paints are more likely to withstand outdoor conditions.

3. Use the Right Primer

Priming the surface before applying paint is crucial for both interior and exterior projects. However, when using interior paint for exterior surfaces, it becomes even more important. Use a high-quality primer that is specifically formulated for exterior applications. The primer will create a barrier between the interior paint and the outside elements, helping to improve adhesion and overall durability.

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4. Proper Surface Preparation

One of the key steps in achieving a successful transformation is proper surface preparation. Clean the exterior surface thoroughly to remove dirt, dust, and any loose or flaking paint. Use a pressure washer or a scrub brush with mild detergent to ensure the surface is clean and free from contaminants. Additionally, sand any rough areas and repair any damages before applying the primer and paint.

5. Apply Multiple Coats

Interior paint is generally not as thick or weather-resistant as exterior paint, so applying multiple coats is essential to ensure better coverage and durability. Allow each coat to dry completely before applying the next one. This will help to build up a thicker protective layer and enhance the overall longevity of the paint on the exterior surface.

6. Monitor and Maintain Regularly

Since interior paint is not designed to withstand the harsh outdoor elements, it’s important to monitor the painted surface regularly for any signs of wear, fading, or damage. Make sure to perform regular maintenance, such as cleaning the surface and doing touch-ups if necessary, to extend the lifespan of the paint.

In summary, while it’s not recommended to use interior paint for exterior projects, with the right techniques and precautions, it is possible to achieve satisfactory results. Consider the specific conditions, choose high-quality paint, use the right primer, properly prepare the surface, apply multiple coats, and regularly monitor and maintain the painted surface. By following these tips and tricks, you can transform interior paint into exterior paint and achieve a long-lasting and beautiful finish for your home’s exterior.


Can I use interior paint for exterior surfaces?

No, it is not recommended to use interior paint for exterior surfaces. Interior paint is not designed to withstand the harsh outdoor elements such as UV rays, moisture, and temperature fluctuations. It may result in peeling, fading, and reduced durability. It’s better to use paint specifically formulated for exteriors.

What is the difference between interior and exterior paint?

Interior paint is designed for surfaces inside the house and is formulated to withstand frequent cleaning, resist stains, and provide a smooth finish. Exterior paint, on the other hand, is made to withstand outdoor conditions, including UV rays, moisture, and temperature changes. It offers better durability, fade resistance, and protection against the elements.

Can I mix interior and exterior paint together?

No, it is not recommended to mix interior and exterior paint together. Both types of paint have different formulations and properties. Mixing them can compromise the paint’s performance, resulting in adhesion issues, inconsistent coverage, and reduced durability. It’s best to use the appropriate paint for each specific surface and location.


In conclusion, transforming interior paint into exterior paint requires careful consideration and proper preparation. While it may be tempting to use interior paint for exterior surfaces, it is essential to remember that interior paints are not designed to withstand the harsh elements of the outdoors. By opting for exterior paint specifically formulated for outdoor use, you ensure durability, weather resistance, and longevity. Additionally, proper surface preparation, including cleaning, repairing, and priming, is crucial to achieve optimal adhesion and protection. Don’t compromise on the quality and performance of your exterior paint; invest in the right product for a beautiful and long-lasting finish.

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