Are you looking for the best hi-build fillers for your projects?
In my experience, like when I flawlessly repaired a rusty car door, I’m sharing top picks and easy tips to create smooth surfaces on metal, wood, or fiberglass that hold up great.
Looking for the best ways to fix small scratches and rough spots on your project? Hi-build fillers make it easy to create a smooth surface. They help you save time on prep work. You can use them on metal, wood, or fiberglass without issues.
These fillers build up fast and are simple to sand down later. They also stop rust from forming on bare areas. Top them with your favorite paint for a perfect end result. You get a strong base that lasts.
I once fixed a rusty car door with a hi-build primer, and it turned out flawless. You’ll trust my tips to guide you right.
Read on to find the top picks that fit your needs. Discover how to pick the best one for your job.
List of Top 8 Hi-Build Fillers
| Image | Title | Best For | Price |
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Dupli-Color DAP1700 2-in-1 Hi-Build Filler & Sandable Primer Spray Paint – 12 oz. Aerosol Can |
Are you tired of minor imperfections ruining your projects? The Dupli-Color 2-in-1 Filler & Sandable Primer is your new best friend! This is perfect for anyone who wants a smooth, professional finish on metal, fiberglass, or wood projects. It fills in imperfections fast and is easy to sand. |
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Rust-Oleum 260510 Stops Rust Automotive 2-in-1 Filler & Sandable Primer Spray, 12 oz, Gray |
Anyone fixing up cars, trucks, or other metal vehicles will love this rust-stopping primer. It’s great for DIY hobbyists who need a quick-drying base coat that fills in bumps and makes surfaces ready to paint. |
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Dupli-Color DAP1700 2 in 1 Hi-Build Filler & Sandable Primer 12 oz. Aerosol (2 PACK) |
Want a smooth, ready-to-paint surface? This 2-in-1 primer is for you! It’s perfect for filling imperfections and creating a sandable base. |
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6-Pack of 11 oz Rust-Oleum Brands 249279 Gray Automotive Filler Primer Spray |
This rust-stopping spray is perfect for car lovers who want to fix bumps, dents, and rust on their vehicles. |
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Speedokote Automotive Hi-Build 2K Urethane Primer/Sealer Black QUART Kit, SS-2950B/2790A-Q |
This High Build Urethane Primer kit is perfect for auto body workers and car enthusiasts who need a fast-drying, easy-to-sand base coat that sticks strong to surfaces. It helps DIY painters get smooth, ready-to-paint finishes quickly without hassle. |
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Clausen Z-Chrome RUST DEFENDER Hi-Build Polyester Primer, 1 Gallon |
This primer is perfect for auto body workers and DIY mechanics who fix scratches and pits on metal parts like car panels or truck frames. It saves time by combining etching, filling, and sealing into one easy step, making surfaces ready for paint. |
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Dominion Sure Seal – 1K Black High Build Primer & Filler – Easy to Use, Quick Dry on Plastic, Steel and Aluminum – High Film Similar to Spray Gun, Top Coating with Sanding Primer – 454 g (16 oz) |
This primer is perfect for DIY fans who need quick fixes on car parts, tools, or home items made of steel, aluminum, or plastic. It’s also ideal for pros who want even coverage and fast work without long waits. |
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Biggie Sized 57 Gram Bottle Full Of Minute Hair Fibers. Hi Grade Hair Building Fibers. Gargantuan Amount of BLACK Fibers Inside A Compact Size Refillable Bottle. Choose Your Color. |
This product is perfect for men and women who want thicker, fuller looking hair in an instant. You can refill it easily to keep that great look going. |
Detailed Reviews
Ready for that perfect finish? This guide highlights the top hi-build fillers for your projects. We’ve reviewed features, performance, and value to simplify your choice. Find the best filler to meet your needs now!
1. Dupli-Color DAP1700 2-in-1 Hi-Build Filler & Sandable Primer Spray Paint – 12 oz. Aerosol Can
Ready to get that perfect finish? The Dupli-Color 2-in-1 Primer makes it simple.
This primer has a hi-build formula. It fills in minor flaws quickly. It is also easy to sand for a smooth surface.
It dries fast, so you save time. Use it on metal, wood, or fiberglass. Dupli-Color helps you get the job done right!
| Pros | Cons |
|---|---|
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Perfect For:
Are you tired of minor imperfections ruining your projects? The Dupli-Color 2-in-1 Filler & Sandable Primer is your new best friend! This is perfect for anyone who wants a smooth, professional finish on metal, fiberglass, or wood projects. It fills in imperfections fast and is easy to sand.
Ready to Purchase?
2. Rust-Oleum 260510 Stops Rust Automotive 2-in-1 Filler & Sandable Primer Spray, 12 oz, Gray
Get ready to transform your ride with Rust-Oleum 260510! This 2-in-1 filler and sandable primer is your secret weapon for a flawless finish.
It’s easy to use on wood, metal, and fiberglass. The Stops Rust formula is a lifesaver. You’ll love the smooth surface.
This spray paint covers up to 10 sq ft and dries super fast. It fills in minor imperfections and is ready for your top coat.
| Pros | Cons |
|---|---|
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Perfect For:
Anyone fixing up cars, trucks, or other metal vehicles will love this rust-stopping primer. It’s great for DIY hobbyists who need a quick-drying base coat that fills in bumps and makes surfaces ready to paint.
Ready to Purchase?
3. Dupli-Color DAP1700 2 in 1 Hi-Build Filler & Sandable Primer 12 oz. Aerosol (2 PACK)
Get ready for a smooth finish! This is the ultimate primer for your projects. It makes everything look better.
This 2-in-1 product fills and primes. It creates a perfect base.
Grab this two-pack now. You will love the results!
| Pros | Cons |
|---|---|
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Perfect For:
Want a smooth, ready-to-paint surface? This 2-in-1 primer is for you! It’s perfect for filling imperfections and creating a sandable base.
Ready to Purchase?
4. 6-Pack of 11 oz Rust-Oleum Brands 249279 Gray Automotive Filler Primer Spray
Transform your car with the 6-Pack of 11 oz Rust-Oleum Gray Automotive Filler Primer Spray. This primer makes prep work fast and easy.
The Hi-build formula covers rough spots well. It fills in imperfections for a smooth base. Use the Stops Rust formula to guard against rust.
The Any-Angle Spray lets you reach tough spots. It has a Comfort Tip for steady sprays. Get pro results in your garage.
| Pros | Cons |
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Perfect For:
This rust-stopping spray is perfect for car lovers who want to fix bumps, dents, and rust on their vehicles.
It works great for anyone doing DIY car repairs at home.
Ready to Purchase?
5. Speedokote Automotive Hi-Build 2K Urethane Primer/Sealer Black QUART Kit, SS-2950B/2790A-Q
Transform your auto projects with the Speedokote Automotive Hi-Build 2K Urethane Primer/Sealer Black QUART Kit. This high build urethane primer gives a strong, smooth base for paint. It sticks great to metal and other parts. No waiting around with this fast dry formula.
Sanding is a breeze thanks to the primer’s easy sanding surface. Prep your ride in less time and get to the fun part. This black kit seals well to stop rust. Fix dents and chips fast.
Grab this kit now. It builds tough layers. Paint over it right away.
| Pros | Cons |
|---|---|
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Perfect For:
This High Build Urethane Primer kit is perfect for auto body workers and car enthusiasts who need a fast-drying, easy-to-sand base coat that sticks strong to surfaces. It helps DIY painters get smooth, ready-to-paint finishes quickly without hassle.
Ready to Purchase?
6. Clausen Z-Chrome RUST DEFENDER Hi-Build Polyester Primer, 1 Gallon
This primer fights rust on metal. It works on bare steel and fills deep scratches.
It saves time by replacing many steps. Sand it easy, wet or dry, for a smooth finish.
No shrink happens with this primer. It seals great between filler and paint. Topcoat ready after final prep.
| Pros | Cons |
|---|---|
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Perfect For:
This primer is perfect for auto body workers and DIY mechanics who fix scratches and pits on metal parts like car panels or truck frames. It saves time by combining etching, filling, and sealing into one easy step, making surfaces ready for paint.
Ready to Purchase?
7. Dominion Sure Seal – 1K Black High Build Primer & Filler – Easy to Use, Quick Dry on Plastic, Steel and Aluminum – High Film Similar to Spray Gun, Top Coating with Sanding Primer – 454 g (16 oz)
Get ready to meet Dominion Sure Seal 1K Black High Build Primer! It’s easy to use and dries fast. This primer is perfect for plastic, steel, and aluminum.
This primer fills in scratches and smooths surfaces. It’s ready for paint in just 30 minutes. You’ll love how it makes your work easier.
It provides great coverage like a spray gun. Your projects will look great with this primer.
| Pros | Cons |
|---|---|
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Perfect For:
This primer is perfect for DIY fans who need quick fixes on car parts, tools, or home items made of steel, aluminum, or plastic. It’s also ideal for pros who want even coverage and fast work without long waits.
Ready to Purchase?
8. Biggie Sized 57 Gram Bottle Full Of Minute Hair Fibers. Hi Grade Hair Building Fibers. Gargantuan Amount of BLACK Fibers Inside A Compact Size Refillable Bottle. Choose Your Color.
Transform your look with our Biggie Sized 57 Gram Bottle of premium hair fibers. Enjoy thicker, fuller hair instantly, creating a boost in confidence. Choose the perfect color to match your style.
Each bottle holds a gargantuan amount of fibers. The refillable and see-through design makes it easy to keep track of how much you have. Plus, the optional sprayer top gives you added control when applying your fibers.
Elevate your hair game today. Experience the difference with our high-grade hair building fibers!
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for men and women who want thicker, fuller looking hair in an instant. You can refill it easily to keep that great look going.
Ready to Purchase?
Buying Guide
Hi-build fillers fix scratches and rough spots on your projects. They create a smooth surface fast.
I fixed a rusty car door with a hi-build primer once. It turned out smooth and lasted great.
Here are factors to consider when buying:
- Material Compatibility: Check if the filler works on metal or wood. It should fit your project’s needs without issues.
- Ease of Sanding: Look for fillers that sand down simply. This helps get a flat surface quick.
- Rust Protection: Choose ones that stop rust on bare areas. This keeps your work lasting longer.
- Drying Time: Pick a fast-dry option to save waiting. Short dry times fit busy schedules.
- Coverage Area: See how much space it covers. Good coverage means fewer cans for big jobs.
- Application Method: Decide on spray or brush types. Sprays hit hard spots easily.
- Formulation: Hi-build types fill minor flaws better. They build up quick for smooth bases.
- Color and Finish: Select gray or black to match later paint. Colors blend well for pro looks.