One of the main reasons why paint is chipping, peeling, or fading quickly is due to a poor-quality exterior primer. If you apply the wrong primer, your paint will not adhere properly to the surface.
So, in this article, I tested the best exterior primers to find the perfect solution for your project.
Reviews of the Top Exterior Primers
1. Rust-Oleum 7780730 Stops Rust Clean Metal Brush On Prime
This Rust-Oleum 7780730 Primer is definitely worth the investment if you’re looking for a durable, weather-resistant, and corrosion-resistant solution for your surfaces.
The primer bonds really well with other interior and exterior surfaces, including masonry, concrete, wood, and more, ensuring that the top coat will adhere well and last for a long time. It is oil-based, which provides great rust prevention.
In terms of application, the primer goes on smoothly and dries relatively quickly, reaching touch-dry status within 2-4 hours. It also covers up to 22 square feet. The white finish is flat, but it can be easily covered with any topcoat.
What I Like
- It has the ability to withstand corrosion and various weather conditions.
- It can be used on both exterior and interior surfaces.
- The white finish can be painted over with any type of topcoat.
- It prevents rust from forming.
- This adhesive primer works well on metal surfaces.
What I Don't Like
- This product is not appropriate for use on galvanized metal.
- This product requires sanding prior to application
2. Prestige Paints E500-9 Paint and Primer in One
Prestige’s product is an attractive option for those seeking a paint and primer combination. It provides a refined and timeless surface appearance. If you have walls that are peeling and appear dull, this primer is a dependable choice.
This top-of-the-line primer solution is excellent for covering up any unattractive exterior rough surfaces. The one-gallon could cover significantly around 400 sq. ft. of surface area and it has a semi-gloss finish which provides a bright and shiny appearance.
This Prestige Paints E-500-9 Paint and Primer in One also has a 100% acrylic formula, which makes it resistant to fading and peeling, even in harsh weather conditions. Moreover, it is effortless to clean and withstands high humidity exposure.
What I Like
- It dries relatively quickly within 1-2 hours
- The product comes with a lifetime warranty for proper application
- It offers excellent coverage, meaning you can achieve a consistent finish with fewer coats.
- It provides a smooth application experience.
What I Don't Like
- It may require multiple coats to achieve the desired results.
- Has a glossy finish, which may not be for everyone
3. Zinsser 02004 Bulls Eye 1-2-3 All Surface Primer
This exterior primer paint is cheap, but it does not compromise on quality. I use it on concrete, drywall, wood, and metal and it worked exceptionally well, and the paint adhered to the surfaces without any issues.
Another great feature of Zinsser 02004 Bulls Eye is its quick drying time. It dries to the touch within 35 minutes, and you can apply the topcoat after just one hour. Additionally, I cover between 87-112 sq. ft. per quart, which is quite impressive.
It also has excellent stain-blocking resistance, rust inhibitor, and antibacterial to prevent mold growth. It can block stains effortlessly and ensure that the topcoat looked smooth and uniform.
What I Like
- Best exterior primer paint for the money
- The water-based formula is safe for use.
- It can be used with any topcoat product.
- It has mold and mildew-resistant properties.
- Suitable for both indoor and outdoor use.
- Effective on surfaces with high pH levels.
- It has a low odor
- It dries quickly within an hour.
What I Don't Like
- It may require multiple coats to cover very dark colors.
- It can be prone to scratching
4. KILZ Oil Adhesion Interior and Exterior Primer
The KILZ Oil Adhesion Primer is a primer that has strong adhesion, making it ideal for surfaces that are typically difficult to stick to. The advanced formula of styrenated acrylic polymer creates a sturdy base for topcoats, which can remove the need to sand glossy and dense surfaces.
I found it easy to apply, and it dries to touch within 30 minutes and is ready to recoat in just 60 minutes. I also appreciated the fact that it can be used as a topcoat with either oil-based or water-based paint.
Its one gallon can cover approximately 300 square feet, which may not seem like much, but it’s enough to avoid the need for a second coat.
What I Like
- Mold and mildew-resistant formula
- High-quality stain-blocking properties
- Excellent adhesion even on porous surfaces
- Great for tough-to-paint surfaces
What I Don't Like
- It is not compatible with spray painting, so you will need to use a brush for application.
- The primer dries quickly which means you need to work fast.
5. Rust-Oleum 1980502 Painter’s Touch Primer
If you’re in search of a primer that works well on a variety of surfaces, the Rust-Oleum 1980502 may be worth considering. I used it on unglazed ceramic, masonry, plaster, metal, and wood, and it leaves a flat finish that minimizes surface imperfections.
Additionally, it’s suitable for both indoor and outdoor applications. One notable feature of this primer is its low odor, which makes it more pleasant to work with than some other primers. It’s also water-based.
In terms of performance, it provides long-lasting protection and increases the adhesion of the finish coat. I also found that it dries to touch in 30 minutes, allowing for quick project completion.
What I Like
- Compatible with a spray gun for easier application
- Provides a smooth and high-quality base
- The acrylic primer formula helps prevent chipping
- Dries quickly within 30 minutes
What I Don't Like
- Sanding is necessary before application.
- You may encounter microbubbles during application.
6. KILZ 3 Premium Primer, Interior/Exterior
This water-based product is designed to seal surfaces and achieve a uniform finish. The consistency of KILZ 3 Premium Primer is just right, allowing for a smooth finish that hides stains, and old colors, and fills in small imperfections.
What I liked the most was its versatility. It can be used on interior and exterior surfaces. I tried it in brick, masonry, paneling, woodwork, plaster, and drywall. It covered up all of the imperfections seamlessly.
Another feature I appreciated was the mildewcide protection that helps prevent mildew. This is especially important in high-humidity locations. Since it is a low-VOC product, it was safe to use and had no harsh odor.
What I Like
- It has low levels of toxicity and odor.
- The water-based formula dries rapidly.
- It functions as both a primer and sealer
- The formula is resistant to mildew growth
What I Don't Like
- There is a possibility that it may leave brush marks.
- Due to its fast-drying formula, it requires quick work to avoid leaving brush marks.
7. INSL-X AQ040009A-01 100% Acrylic Water-Based Sealer Primer
I used INSL-X AQ040009A-01 on wood, metal, and previously painted walls and it provided a strong bond and excellent coverage. The product’s stain-blocking primer properties also worked well, as I didn’t notice any bleed-through of stains or discoloration from the previous coating.
Additionally, the low VOC content made it a more eco-friendly option. One gallon of this product covered between 300-400 square feet, which was right on target with what the label indicated.
It was easy to apply with a brush, roller, or sprayer, and based on other reliable exterior primer paint reviews, this product could be used when the ambient temperature was between 50-90 degrees Fahrenheit.
What I Like
- It can be used with both oil-based and latex primer coats.
- Provides mold-resistant coating.
- It has low VOC and odor.
- This primer can be used for multiple purposes.
What I Don't Like
- The product may come in packaging that is not properly sealed, which could lead to spills or damage during shipping.
- This primer is not suitable for use in areas that are continuously exposed to moisture.
8. Rust-Oleum Zinsser 03504 Cover Stain Interior/Exterior Oil Primer
This oil-based primer is perfect for repainting work and priming small projects, remodeling, or new construction. The powerful formula of the Rust-Oleum Zinsser 03504 conceals stains and effectively seals surfaces against nicotine, water, and smoke damage.
And its easy sanding properties further enhance its utility. What impressed me the most about this oil-based primer is it provides enamel undercoating performance. It also delivers flexibility and full penetration on exterior surfaces. The primer gives an extra shine to the product, which is a bonus.
I found the application process effortless, and the primer stuck to the stain-prone surfaces very well. The end result was a smooth, uniform surface that was ready for painting.
What I Like
- Quick drying time
- Easy to sand off the excess primer
- Bonds well with latex paint primer
What I Don't Like
- The odor of the product may be too strong for some users.
- High VOC level
9. KILZ 2 All-Purpose Primer, Interior/Exterior
This water-based primer is incredibly versatile and can be used on a wide range of interior and exterior surfaces, including wood, stucco, drywall, metal, brick, and even in properly prepared glossy surfaces.
The KILZ 2 All-Purpose Primer can block mild to medium stains, including felt marker, ink, grease stains, and water damage. It also effectively hides old colors and creates a mildew-resistant film, which is essential for areas prone to high humidity.
The coverage is impressive like what exterior primer paint reviews say. Each gallon covers roughly 300-400 square feet. Plus, it is compatible with both oil-based paints and latex paints, giving you greater flexibility in your color choices.
What I Like
- Strong adhesion that helps to prevent peeling of the paint
- Quick drying time
- Effective in preventing mildew growth
What I Don't Like
- It may require more than one coat to achieve desired coverage.
- If left unpainted, it may experience discoloration over time.
Exterior Primers Buyer’s Guide
Primer Type
Oil-Based
As the name suggests, oil-based paint primers have an oil base or carrier. They are known for their excellent adhesion. They are commonly used for painting wood, especially for exterior surfaces.
Oil-based primers are also durable and resist stains and water damage but may have high VOC (volatile organic compounds) levels and require a mask for safety. They may also have a longer drying time.
See Also: What is Self-Etching Primer?
Water-Based
Water-based primer, also called acrylic or latex primers, is less toxic and dries faster than oil-based options. It may require more coats because it is not as thick as an oil-based primer.
They are eco-friendly and low in VOC. Water-based primers are also easy to clean up with soap and water.
Shellac
Shellac primers are known for their superior stain-blocking primer properties. They are effective at blocking tannins, water stains, and smoke damage. They are also easy to sand and provide an excellent base for painting or staining.
However, they are not recommended for use on exterior surfaces and they can be a bit harder to clean compared to water-based primers.
Odor
Some wood primers can have a strong odor that can linger for days or even weeks after application.
If you are sensitive to strong smells or have respiratory issues, it is important to choose a low-odor or odorless outdoor paint primer. You can also consider primers that are labeled as “low VOC,” which means they emit fewer harmful chemicals into the air.
Toxicity
When choosing the best exterior primer paint, it is important to consider the toxicity of the product.
Look for primers that are labeled as “non-toxic” or “low toxicity,” especially if you have children or pets who may come into contact with the painted surfaces. Avoid using primers that contain lead or other harmful chemicals.
Tint and Coverage
Exterior paint primers come in a range of colors, but most are either white or tintable. If you plan to use a dark color for your final coat, it is best to choose a tintable primer that matches the color.
Additionally, consider the coverage of the primer, as some of the best exterior wood primers require multiple coats for full coverage.
Finish
The finish of the primer can affect the final appearance of your paint job. Most exterior primers have a flat or satin finish, which is suitable for most outdoor surfaces. However, if you want a glossier finish, choose a primer that is labeled as “high gloss.”
Ingredients to Look out for
When choosing a primer, look out for the ingredients listed on the label. Some common ingredients of the best outdoor paint primer include acrylic, latex, and oil-carrier formulations. Choose a primer that is compatible with the type of paint you plan to use.
Additionally, look for primers that contain rust inhibitors or other additives to protect against corrosion and weathering.
Drying and Curing Time
The drying time refers to the period it takes for the primer to dry to the touch, allowing for subsequent layers or sanding. On the other hand, curing is a chemical process where the primer reaches its maximum hardness and durability.
These processes can vary depending on the brand and formulation. Some primers can dry in as little as 30 minutes, while others may take several hours or even days to cure fully.
Also, consider the climate and weather conditions in your area when choosing a primer, as extreme temperatures and humidity can affect the drying and curing time.
Scratch Resistance
If you plan to paint surfaces that are prone to scratching or abrasion, such as doors or trim, look for the best exterior wood primer that offers scratch resistance. Not all primers contain special additives that create a harder, more durable surface to make it scratch resistant.
Eco-Friendliness
If you are concerned about the environmental impact of your paint job, choose an eco-friendly exterior primer. Look for the best exterior wood primer that is labeled as “low VOC” or “zero VOC,” which means they emit fewer harmful chemicals into the air.
Additionally, look for primers that are made from sustainable or renewable materials.
Surface
Painted Wood
If you plan to paint over a previously painted surface, choose a primer that is compatible with the existing paint. You can use an exterior oil-based primer as it provides a smoother finish and is better at preventing imperfections like chalking on painted wood.
Bare Wood
If you are painting bare wood, it is important to choose a primer that will seal the surface and prevent moisture from penetrating the wood.
For bare wood, you can use either oil or latex primer. These are designed for use on unfinished wood and contain additives to prevent mildew and rot. But keep in mind that oil-based primers emit VOCs, so be careful when using them.
Stained Porous Wood
If you are painting over a stained, porous wood surface, choose a primer that will prevent the stain from bleeding through. Look for primers that are specifically designed for use on stained porous surfaces and contain stain-blocking additives.
To cover water-based stains, use a latex primer. But for grease or smoke stains, use an oil-based primer or sealer instead.
Glossy Surfaces
For glossy surfaces like glass and plastic, it’s best to apply a bonding primer instead of a glossy one. A bonding primer is specially designed for these glossy surfaces and works with any type of base, as long as it is labeled as a bonder or for a glossy surface.
Metal
Look for primers that are rust-inhibitive, as metal surfaces are prone to rust and corrosion. Avoid using a latex stain-blocking primer on metal surfaces as they can cause more rust formation.
Coating metal can be challenging due to the risk of rust and the smooth finish of the surface. Apply a specialized metal primer instead.
Paint and Primer in One vs. Separate Primer
Paint-and-primer combination products can save time by allowing you to prime and paint in one step, but it’s important to use them only in appropriate situations. Here are the situations when they are appropriate:
- Repainting a surface with the same color or a few shades darker
- The surface is not peeling
- The surface is not bare or stained wood
On the other hand, here are the circumstances when you should apply a primer and paint:
- You're switching to a lighter color of paint.
- You want to cover an oil layer of paint with latex.
- You want to utilize paint with a dissimilar base.
- The surface is bare or stained wood
- The surface is tainted or has peeled
Choosing the Right Primer Based on Your Project
Moisture-Prone Surfaces and Areas
Areas that are often wet, such as closets, bathrooms, and kitchens, are prone to problems like mildew and peeling.
To prevent moisture from seeping in through walls, it’s a good idea to use a vapor barrier primer. For interior walls, a stain-blocking primer can effectively manage mildew and peeling, and prevent blistering on exterior walls.
Before priming, you should remove mildew by mixing three parts water with one part bleach.
Painted Wood Pieces
Before buying a primer, check first the type of paint that’s already on your painted wood pieces. If the previously painted surfaces are in good shape, you might not need a primer. However, if there are chips or the surface is chalky, using an oil enamel will help restore the original appearance.
After priming, lightly sand the surface to create a smoother finish. It’s best to use an enamel undercoat to ensure a high-quality topcoat. Avoid using water-based and shellac primers, as they tend to become brittle when drying.
Exterior Wood
If you want to protect the exterior surface of the wood from harsh elements, it’s important to use a high-quality outdoor paint primer. For the best results, an acrylic paint primer is recommended. To ensure the best outcome, it’s a good idea to use paints and primers with the same brand.
Old Exterior Paint
For exterior paint that has been on the surface for a long time or peeled bare wood, an acrylic or latex paint primer is the most suitable to use. However, if the paint is becoming powdery or chalking, then the entire surface must be redone.
To know if the surface is chalking, wipe the surface with a cloth. If dust is picked up, then it indicates that the surface is chalking
Use pressure washing to remove loose paint and prepare the surface for painting, but keep the nozzle at least 16 inches away from the surface. Also, clean, sand, and scrape peeling areas before starting any work.
Failure to clean the surface properly can result in a poor finish that may need to be redone in two years.
New Drywall
When working with new drywall [1], be careful when applying mud to the seams. If the mud is not treated properly, it can result in blemishes that show through the paint. This is known as flashing and can create an uneven finish.
To avoid this, it’s important to use a drywall sealer or primer before painting. Wait at least two days for the primer to dry, as some primers can bond well with paint applied over them. After priming, it’s best to wait for a few more days before you start painting.
Newly Repaired Areas
If you have repaired walls and plan to paint them, you might notice that certain areas absorb paint differently from the rest of the surface, resulting in visible patches after painting.
To avoid this issue, it’s essential to use a high-quality drywall primer that covers the surface evenly and prevents flashing. If you used plaster during the repair process, I recommend using an oil-based stain-blocking primer for the best results.
By using these primers, you can achieve excellent results and ensure that your painted walls look uniform and attractive.
New and Bare Wood
For new bare wood, it’s important to use an exterior wood primer to seal the surface. This will prevent the wood from absorbing moisture and will hide any imperfections on the surface, resulting in a more uniform look.
I recommend using slow-drying oil-based primers due to their strong adhesion properties and are easier to sand than a water-based exterior wood primer.
MDF
When working with medium-density fiberboard (MDF), there are types of primer you can use. If you are using MDF that is not pre-primed, an exterior oil-based primer is recommended.
Before applying the primer, ensure that the surface is clean and free of any dirt or dust particles. This will help to create a smooth finish.
It is also important to note that using water-based paint on MDF can cause the material to swell, so it is best to stick with oil-based products for the best results.
Surfaces With Faded or Intense Changes in Color
When painting a surface with a darker shade, it can be challenging to cover up the marks left by the previous surface. This requires more coats, which can be time-consuming and costly. However, a simple solution to this problem is to tint the primer before applying it.
This will reduce the number of coats required to effectively cover the darker marks. It’s important to note that not all primers require tinting, so be sure to check the product label before purchasing.
FAQ
How many coats of exterior primer should I apply?
In general, it’s a good idea to apply at least two or three coats of primer before painting the exterior of your home. This helps to ensure that the paint will adhere properly and provide a smooth, even finish.
How should I apply exterior primer paint?
To apply exterior primer paint, you can use a sprayer, brush, or roller. It’s important to use even strokes and avoid over-brushing or over-rolling to achieve a smooth and consistent finish.
What paint type should I apply above exterior primer paint?
In general, for exterior surfaces, it is recommended to use high-quality 100% acrylic latex paint. This type of paint is flexible and has a durable protective coating and can withstand exposure to the elements.
Check the product label to ensure the paint is suitable for the surface.
How should I prep the surface before I apply exterior primer?
To prepare for applying exterior primer paint, it’s important to clean and dry the surface first. If there is existing paint, it must be removed using a putty knife or wire brush. If necessary, you can use a mild detergent or degreaser to clean the surface thoroughly.
Are primers long-lasting?
Primers are designed to be durable and long-lasting. They are formulated to adhere well to the surface and create a smooth, even base for the paint to adhere to. Primers also help to improve the paint’s adhesion, durability, and overall performance.
Is an exterior primer essential?
Using exterior primer paint is essential for several reasons. It creates a smooth surface for paint to stick to, sealing porous surfaces to prevent moisture damage, blocks stains, and reduces the amount of paint needed.
It is important for achieving a long-lasting exterior paint job on outdoor surfaces.
What are the different sheens of primer?
There are three types of finishes for paint: Satin, Matte, and Gloss. Each has certain uses. Matte finish is good for different surfaces, while gloss finish is commonly used on front doors, and satin finish is usually found in bathrooms and kitchens.
Recommended Readings:
My Top Pick For an Exterior Primer: Rust-Oleum 7780730 Stops Rust Clean Metal Brush On Primer
After testing different options, I chose the Rust-Oleum 7780730 as the best exterior primer paint. It is a valuable choice for those who aim to safeguard and prolong the lifespan of their exterior surfaces.
It provides a perfect combination of weather and corrosion resistance, superior adhesion, and outstanding rust prevention.
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