How to Fix a Large Car Scratch | TouchUpDirect

Applying clearcoat with a TouchUpDirect pen

How to Fix a Large Car Scratch

Deep scratch? Skip the body shop. With the right prep, primer, and color-matched paint, you can repair a large scratch yourself and restore your vehicle’s finish.

A large scratch can look like a job that requires a professional body shop—but many scratches can be repaired at home with the right products and technique. The TouchUpDirect Aerosol Platinum Kit is designed for larger repairs where more paint coverage is needed than a touch up pen can provide. Watch the video above to see the complete repair from preparation through the final finish.

Is This the Right Method for Your Scratch?

This method works best when your scratch is:

Large - too extensive for a touch up
Repairable with paint - the panel itself is not dented or severely damaged
Spread across a larger area - such as a door, fender, bumper, hood, or other body panel

For a large scratch, an aerosol provides broader and more even coverage than a pen or brush, making it the better choice for blending the repaired area into the surrounding finish.

Step 1: Clean and Inspect the Area (~10 minutes)

Start by washing the damaged panel with soap and water to remove dirt and road grime. Rinse thoroughly and allow the area to dry completely.
Now inspect the scratch closely. If you can see bare metal, plastic, or another exposed substrate, primer will be required before applying Colorcoat
Step 2: Sand the Scratch (~15–30 minutes)

Tip:

Don't rush this step. Any rough edges or imperfections left underneath the repair can become much more noticeable after Primer, Colorcoat, and Clearcoat are applied.

The goal of sanding is to smooth the damaged area and remove loose or raised edges around the scratch.
Use 400-grit sandpaper to gradually smooth the damaged surface. Keep your sanding focused on the repair area and avoid unnecessarily sanding the surrounding factory paint.
If the scratch is deep enough that it cannot be filled with Primer alone, you may need Scratch & Chip Putty to fill the deeper scratches. After sanding, clean the area again to remove all dust and residue.
Step 3: Mask the Repair Area
Tips:

Mask 12–18 inches beyond the damaged area to prevent overspray and leave enough room to blend the repair seamlessly into the surrounding paint.
To avoid hard paint edges, we recommend using the rolled tape technique along all edges of the paint area.

Before spraying, carefully mask the surrounding vehicle to protect it from overspray.
Leave enough room around the damaged area to allow the new paint to blend naturally into the existing finish. Avoid creating a hard, obvious paint edge directly around the scratch.
Make sure the surface is clean, dry, and free of sanding dust before you begin painting.
Step 4: Apply Primer (~30 minutes)
Primer is important when the scratch reaches bare metal, plastic, or another exposed substrate. It creates a surface that the Colorcoat can properly adhere to and helps protect the exposed area.
Apply a light, even coat of Primer to the damaged area. Avoid trying to build the entire repair with one heavy coat.
Apply a thin first coat
Allow it to dry
Apply a second coat if needed
Let the Primer dry completely before moving on
Step 5: Wet-Sand the Dry Primer (~15 minutes)
Important:

Any unevenness in the Primer can become more noticeable once the Clearcoat is applied, so take the time to get this surface right.

Once the Primer is dry, inspect the surface. It should be smooth and even. If necessary, lightly wet-sand the Primer to remove imperfections and create a smooth surface for Colorcoat.

Use 400-grit sandpaper and dip the sandpaper into a cup of water.
Lightly sand the primed area using a circular motion.
Step 6: Test the Color

Before spraying your vehicle, always test the Colorcoat and Clearcoat on the included test card.
Apply the Colorcoat according to the instructions, allowing each coat to dry before applying the next. Then apply Clearcoat over the test area.
Compare the finished test card with the vehicle in natural lighting.
If the color matches, you're ready to proceed. If it doesn't look right, stop and contact TouchUpDirect for our Color Match Guarantee.
Step 7: Apply the Colorcoat (~30–40 minutes)
Tricoat:

For Tricoat colors, apply the Basecoat first. Once the Basecoat is completely dry, apply the Midcoat. Follow the specific paint instructions for your vehicle's color.

Shake the aerosol thoroughly before spraying and periodically throughout the application. Before spraying the vehicle, test the can with a brief spray in a safe direction to make sure the nozzle is working correctly. Hold the can approximately 6–8 inches from the surface and apply light, even coats rather than trying to cover the repair completely in one pass.
The key is controlled coverage:
Start with a light coat
Allow it to dry
Apply additional coats as needed
Keep each coat thin and even
Gradually build coverage until the repair is fully covered
Don't try to make the paint perfect with one heavy application. Heavy coats can lead to runs, uneven coverage, and a finish that takes longer to dry.
Step 8: Apply the Clearcoat (~30 minutes)
Important:

For the best results, apply Clearcoat as soon as the Colorcoat is completely dry. Do not wait more than 12 hours to apply Clearcoat, as waiting too long can affect Clearcoat adhesion.

Once the Colorcoat has dried completely, it's time for Clearcoat.
Clearcoat is essential because it provides the gloss and protective layer that completes the paint repair. It also plays an important role in achieving the correct final color appearance.
Apply a light, even coat over the repaired area.

Allow the first coat to dry for about 15 minutes
Apply another light coat
Repeat as needed for full coverage
Do not exceed 4 total coats
Avoid applying Clearcoat too heavily. Several controlled coats produce a better finish than one thick coat.
Clearcoat will be dry enough to handle within approximately 30 minutes of the final application.
Step 9: Let the Repair Cure
Important:

Wait 72 hours before washing or waxing the repaired area. Curing takes time — the clearcoat needs the full 72 hours to fully harden and bond, and rushing this step can affect gloss, durability, and how well the repair blends with the surrounding paint.

During the cure period, avoid:

Washing or waxing the repaired area

Parking outdoors in direct sun, rain, or extreme temperatures

Heavy use or contact with the repaired panel
Once fully cured, you can wet sand and polish the area to help blend the repair with the surrounding factory paint. To get an extra shine, use the TouchUpDirect Polishing Kit.

Cost Saving
	TouchUpDirect	Body Shop
Cost	Starting at $86	$1,000+
Time	A few hours of hands-on work	Days or longer
Skill Level	Intermediate DIY	Professional
Result	Color-matched, sealed repair	Professional repaint

Do I need primer for a large scratch?

If the scratch exposes bare metal, plastic, or another underlying substrate, yes. Primer provides a proper surface for the Colorcoat to adhere to and helps protect the exposed material.
Do I need to sand a large scratch?

Sanding is generally part of preparing a larger scratch for repair. It helps smooth damaged edges and creates a suitable surface for primer and paint. Sand carefully and keep the repair area controlled so you don't unnecessarily damage the surrounding factory finish.
Can I fix a large scratch with a touch up pen?

A pen is best for small chips and small scratches where you need precise paint application. For a larger scratch or larger damaged area, an aerosol provides broader coverage and is generally better suited to the repair.
How many coats of Colorcoat should I apply?

Generally, 2–3 coats of Colorcoat should provide sufficient coverage. However, always check the repair to make sure the damaged area is fully and evenly covered before applying Clearcoat. Apply light, even coats and allow each coat to dry before applying the next.
How many coats of Clearcoat should I apply?

Apply light, even coats with approximately 15-30 minutes of drying time between coats. Do not exceed 4 total coats.
When can I polish or wax the repair?

Wait at least 72 hours before wet sanding, polishing, or waxing so the repair has time to cure properly.
Can I repair a scratch that reaches bare metal?

Yes, if the damage is appropriate for a DIY paint repair. Bare metal must be properly cleaned, prepared, and primed before applying Colorcoat.
When should I go to a body shop instead?

If the scratch is accompanied by significant denting, damaged bodywork, severe rust, or damage that goes beyond the paint surface, professional repair may be the better choice.
Can I apply the Clearcoat the next day after the Colorcoat has dried?

For the best results, apply Clearcoat as soon as the Colorcoat is completely dry. Do not wait more than 12 hours to apply Clearcoat, as waiting too long can affect Clearcoat adhesion.
What should I do if the damaged area has rust?

Rust needs to be completely removed before you begin the paint repair. Sand the affected area until all visible rust is gone, then clean the surface thoroughly to remove any dust or residue. Once the area is clean and dry, apply Primer before applying Colorcoat. Do not paint over existing rust, as it can continue to spread underneath the new paint and compromise the repair.

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