Choosing the best exterior paint for Hardie board can be challenging. The right paint enhances durability and appearance.
In this post, we will explore some top options for painting Hardie board. These include DAP INC 18741 Platinum Patch Filler, Romabio MicroGrip Primer, and Romabio Masonry Flat. Each product serves a unique purpose and offers distinct benefits. For example, DAP Platinum Patch Filler repairs and prepares surfaces for painting.
Romabio MicroGrip Primer provides a strong foundation for paint adherence. Romabio Masonry Flat gives a beautiful finish to your Hardie board. Understanding these products helps you make an informed choice. Let’s dive deeper into each option and find the best fit for your needs.
Dap Inc Platinum Patch Filler

The DAP INC 18741 Platinum 16OZ Patch Filler is a high-quality product designed for repairing and patching walls. It provides a smooth finish and is perfect for both interior and exterior use.
Pros:
- Easy to use for DIY projects.
- Quick drying time.
- Durable and long-lasting results.
- Versatile for both interior and exterior applications.
Cons:
- May require multiple coats for larger repairs.
- Not suitable for extremely large holes or cracks.
The DAP INC 18741 Platinum 16OZ Patch Filler stands out due to its ease of use, making it an ideal choice for DIY enthusiasts. Its quick drying time allows for efficient project completion, and its durable formulation ensures that repairs will last. The white color seamlessly blends with most walls, making touch-ups less noticeable.
However, while the patch filler is excellent for smaller repairs, it may require multiple coats for larger areas, which can be time-consuming. Additionally, it might not be the best option for significant structural damage. Despite these minor drawbacks, the DAP INC 18741 Platinum 16OZ Patch Filler remains a reliable and versatile product for home improvement projects.
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Romabio Microgrip Primer

The Romabio MicroGrip Primer is a versatile interior/exterior mineral paint primer that comes in a convenient 1L/1QT size. It’s designed to provide excellent adhesion and durability for various surfaces, making it an essential product for both DIY enthusiasts and professional painters.
Pros:
- High-quality adhesion
- Suitable for both interior and exterior applications
- Eco-friendly and non-toxic formulation
- Easy to apply with a smooth finish
Cons:
- Limited color options
- Higher price compared to traditional primers
The Romabio MicroGrip Primer stands out due to its high-quality adhesion properties, making it suitable for a variety of surfaces including brick, stone, and concrete. Its eco-friendly and non-toxic formulation ensures that it is safe for both the user and the environment, a crucial factor for many consumers today.
Additionally, its versatility for both interior and exterior applications makes it a valuable addition to any painting project. However, the limited color options and a slightly higher price point might be a consideration for some users. Despite these minor drawbacks, the ease of application and the smooth finish it provides make it a worthwhile investment for achieving professional-quality results.
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Romabio Masonry Flat

Romabio Masonry Flat, Mineral-Based Masonry Paint in Navy Steel is an excellent choice for those looking to refresh the appearance of their brick, stone, Hardie board, or stucco surfaces. This 1-liter paint is designed to provide a flat finish and is known for its durability and ease of application.
Pros:
- Durable and long-lasting
- Easy to apply
- Environmentally friendly
- Available in the stylish Navy Steel color
- Suitable for multiple surfaces including brick, stone, Hardie board, and stucco
Cons:
- Relatively higher price point
- Limited color options
The Romabio Masonry Flat paint offers a seamless application process, making it a favorite among both DIY enthusiasts and professional painters. Its mineral-based formula ensures that the paint adheres well to surfaces, providing a long-lasting finish that can withstand various weather conditions. The Navy Steel color adds a modern touch to any exterior, making your home stand out in the neighborhood.
In addition to its aesthetic appeal, the Romabio Masonry Flat paint is also environmentally friendly, making it a responsible choice for eco-conscious homeowners. While the cost might be on the higher side compared to other paints, the durability and finish it offers make it worth the investment. However, potential buyers should be aware of the limited color options available, which might not suit everyone’s taste.
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Romabio Masonry Textured

The Romabio Masonry Textured, Mineral-Based Masonry Paint is an excellent choice for those looking to refresh their brick, stone, Hardie Board, or stucco surfaces. This Richmond White paint comes in a convenient 2.5L/0.67GAL size, making it suitable for various projects. The paint is known for its durability, ease of application, and beautiful finish.
Pros:
- Durable and long-lasting finish
- Easy to apply on multiple surfaces
- Eco-friendly and low VOC
- Richmond White color provides a clean, classic look
Cons:
- Limited color options
- Relatively higher price compared to other brands
The Romabio Masonry Textured Paint stands out due to its mineral-based composition, which ensures a durable and long-lasting finish. This makes it an ideal choice for homeowners looking to invest in a quality product that will stand the test of time. The Richmond White color provides a timeless and elegant look that can enhance the aesthetic appeal of any home. Additionally, its eco-friendly nature and low VOC content make it a safe option for both the environment and the people living in the painted space.
One of the main advantages of this paint is its ease of application. Whether you’re a DIY enthusiast or a professional, you’ll find that applying this paint is straightforward and hassle-free. However, it’s worth noting that the limited color options might be a drawback for those looking for more variety. Additionally, while the higher price point might deter some buyers, the long-term benefits and quality of the product justify the investment. Overall, the Romabio Masonry Textured Paint is a reliable and high-quality option for anyone looking to rejuvenate their masonry surfaces.
To buy this product, click here.
Kilz 1-part Epoxy Acrylic Concrete And Garage Floor Paint

The KILZ 1-Part Epoxy Acrylic Concrete and Garage Floor Paint is a versatile coating designed for both interior and exterior applications. Available in a sleek Slate Gray finish, this paint is ideal for enhancing the look of your concrete surfaces while providing long-lasting protection. This product is manufactured by Masterchem Industries LLC and comes in a 1-gallon can, making it suitable for various project sizes.
Pros:
- Durable and long-lasting finish
- Suitable for both interior and exterior use
- Provides a sleek satin finish
- Easy to apply
Cons:
- Requires proper surface preparation
- Can be slippery when wet
The KILZ 1-Part Epoxy Acrylic Concrete and Garage Floor Paint stands out for its durability and versatility. With its ability to be used on both interior and exterior surfaces, it provides a protective and aesthetic enhancement to concrete floors. The Slate Gray color offers a modern and clean look, making it a popular choice for garages, basements, and driveways.
While the application process is relatively straightforward, it’s important to note that proper surface preparation is crucial to achieving the best results. This paint can be slippery when wet, so it may not be ideal for areas prone to moisture unless anti-slip additives are used. Overall, the KILZ 1-Part Epoxy Acrylic Concrete and Garage Floor Paint is a reliable choice for those seeking a high-quality finish for their concrete surfaces.
To buy this product, click here.
Frequently Asked Questions
What Is The Best Exterior Paint For Hardie Board?
Romabio Masonry Flat and Romabio Masonry Textured are top choices for Hardie board. They are mineral-based, providing durability and a natural look. Both paints are eco-friendly and easy to apply.
How Do You Use Dap 18741 Patch Filler?
DAP 18741 Patch Filler is easy to use. Clean the surface, apply the filler with a putty knife, and smooth it out. Let it dry completely before painting or sanding.
Can Romabio Microgrip Primer Be Used Outside?
Yes, Romabio MicroGrip Primer is suitable for both interior and exterior surfaces. It enhances paint adhesion and durability. It’s ideal for preparing Hardie board, brick, and stucco.
Is Kilz Epoxy Paint Good For Garage Floors?
Yes, KILZ 1-Part Epoxy Acrylic Paint is excellent for garage floors. It provides a durable, satin finish that withstands heavy traffic and chemicals. It’s also easy to clean.
What Colors Are Available For Romabio Masonry Paint?
Romabio Masonry Paint comes in various colors, including Navy Steel and Richmond White. These shades offer a timeless, elegant look for your exterior surfaces.
How Long Does Romabio Masonry Paint Last?
Romabio Masonry Paint is highly durable, lasting up to 20 years. Its mineral-based formula ensures long-lasting protection and beauty for your exterior surfaces.
Conclusion
Choosing the best exterior paint for hardie board can transform the look and durability of your home. Dap inc 18741 platinum patch filler offers an excellent base for repairs. Romabio microgrip primer ensures solid adhesion for all your paint layers.
For a beautiful finish, romabio masonry flat in navy steel or romabio masonry textured in richmond white are great choices. They provide durable, appealing results. Kilz 1-part epoxy acrylic concrete and garage floor paint in slate gray is perfect for high-traffic areas.
It offers a sleek, resilient finish. Each of these products can help you achieve a professional look. Remember to follow the manufacturer’s instructions for the best results. Investing in quality paint and preparation products will protect your hardie board and enhance your home’s curb appeal.
Enjoy your painting project and the fresh, new look of your home.