Painting Millwork Tips

In this guide, we’ll walk you through the entire process, step by step. From preparation to the final coat, you’ll learn exactly how to paint millwork like a pro—so you can achieve a high-quality, long-lasting result that makes your home look its absolute best.

Step 1: Preparing the Millwork for Painting

When it comes to painting millwork, proper preparation is just as important as the paint itself. Skipping this step can lead to uneven coverage, poor adhesion, and a finish that won’t stand the test of time. Taking the time to clean, sand, and prime the surface will make all the difference in achieving a smooth, professional-looking result.

Cleaning and Deglossing the Surface

Millwork naturally accumulates dust, dirt, and oils over time, which can prevent paint from adhering properly. Start by wiping down the surface with an all-purpose cleaner and a lint-free cloth to remove any grime. If the existing finish is glossy, using a liquid deglosser will help dull the sheen and create a better bond for the paint.

Filling Imperfections and Sanding for a Smooth Base

Small dents, nail holes, and cracks can become more noticeable after painting millwork, so it’s important to fill them before getting started. Apply wood filler to any imperfections, smoothing it out with a putty knife for an even surface. Once the filler has dried, lightly sand the entire area with 220-grit sandpaper to create a smooth finish.

After sanding, wipe everything down with a damp cloth or tack cloth to remove any dust. A clean, smooth base is essential for proper primer and paint adhesion, so taking the time to do this step thoroughly will ensure the best results.

With the surface prepped and ready, the next step is priming to create a strong foundation for the final coat of paint.

Step 2: Priming the Millwork for a Strong Foundation

A high-quality primer is essential when painting millwork because it helps the paint adhere properly, provides a uniform base, and prevents stains or wood tannins from bleeding through. Skipping this step can result in uneven coverage and a finish that doesn’t last as long. Choosing the right primer and applying it correctly will set the stage for a smooth, durable paint job.

Choosing the Right Primer

The type of primer you need depends on the paint you plan to use and the condition of the millwork. If you’re using an oil-based paint, an oil-based primer is the best choice for maximum adhesion and durability. For water-based or latex paints, a high-quality bonding primer will help create a solid base.

If the millwork is bare wood, a stain-blocking primer is recommended to prevent discoloration from wood tannins. For previously painted surfaces, a standard bonding primer will usually be enough to help the new paint stick effectively.

Applying Primer for Maximum Coverage

Using the right technique when applying primer ensures smooth coverage and prevents visible brush strokes. A 2-inch angled brush is ideal for reaching corners and detailed trim, while a small foam roller can help cover wider, flat surfaces evenly.

Start by cutting in around edges and corners with the brush, applying primer in long, even strokes. For larger sections, use the roller to spread the primer smoothly, making sure to maintain a wet edge to avoid lap marks. One coat of primer is usually enough, but if the surface is still uneven or the previous color shows through, a second coat may be necessary.

Drying Time and Final Prep

Allow the primer to dry completely before moving on to painting. Drying times vary depending on the type of primer used, so check the manufacturer’s instructions for guidance. Once dry, lightly sand the surface with fine-grit sandpaper to smooth out any brush marks or raised wood grain. Wipe away any dust with a clean cloth, and the millwork is now ready for the final step—painting.

Step 3: Painting Millwork for a Smooth, Professional Finish

With the primer dry and the surface prepped, it’s time to apply the final coats of paint. Choosing the right type of paint and using the proper techniques will make all the difference in achieving a smooth, long-lasting finish. Whether you’re working on baseboards, moldings, or window casings, painting millwork requires patience and attention to detail to get a flawless result.

Choosing the Right Paint for Millwork

Not all paints are created equal, and using the wrong type can lead to chipping, peeling, or an uneven finish. For millwork, a high-quality semi-gloss or satin paint is recommended. These finishes offer a smooth, durable surface that is easy to clean while highlighting the details of the trim.

Popular choices for millwork paint include Benjamin Moore’s Advance, Regal, or ben® Interior Paint, which are designed to provide excellent coverage and a smooth finish. Water-based (acrylic or latex) paints dry faster and are easier to clean up, while oil-based paints offer superior durability and a traditional high-end look.

Using the Right Painting Technique

The key to a professional-looking finish is applying the paint in thin, even layers while maintaining a wet edge to avoid brush marks or streaks. A 2-inch angled brush is perfect for cutting in along edges, while a small foam roller can be used for larger, flat areas to create an even coat.

Step-by-Step Painting Process:

1. Start with the edges and corners, using the angled brush to apply paint in smooth, controlled strokes.
2. Move to the main surfaces, using short horizontal strokes to spread the paint evenly.
3. Smooth out the paint with long, vertical strokes to eliminate any visible brush marks.
4. Work in sections, ensuring a wet edge to blend strokes seamlessly.
5. For wider trim or paneling, use multiple parallel strokes to avoid uneven buildup.

Applying multiple thin coats rather than one thick coat will create a smoother and more professional finish. Allow each coat to dry fully before applying the next layer to prevent tackiness or streaking.

Brushing vs. Spray Painting: Which Method is Better?

For a flawless, high-end finish, spray painting is often the preferred method, as it provides a super-smooth, even coat without brush marks. This is especially beneficial for large or intricate millwork pieces. However, it requires more preparation, including masking off surrounding areas and ensuring proper ventilation.

Brushing and rolling, on the other hand, offer more control and are ideal for small projects or spaces where overspray is a concern. While it may take more time, using high-quality brushes and rollers can still result in a professional-looking finish with minimal streaks.

No matter which method you choose, the goal is the same—a beautifully painted millwork surface that enhances the overall aesthetic of your home. Once the final coat is dry, it’s time for the finishing touches to perfect the look.

Step 4: Finishing Touches for a Flawless Result

The final steps in painting millwork are crucial for achieving a professional-grade finish. While the bulk of the work is done, taking the time to refine the details will ensure that your painted trim looks smooth, polished, and built to last. A proper finish not only enhances the aesthetics of the millwork but also protects it from daily wear and tear.

Ensuring a Smooth, Even Finish

Once the final coat of paint has dried, closely inspect the surface under good lighting. Look for any imperfections such as brush marks, drips, or uneven coverage. If the surface feels rough in certain areas, lightly sand it with fine-grit sandpaper (320-grit or higher) to smooth out any bumps. Be careful not to sand too aggressively, as this can remove the fresh paint.

After sanding, wipe away any dust with a damp microfiber cloth or tack cloth to prevent debris from becoming trapped in the next touch-up layer. If necessary, apply a thin, even coat of paint using a fine-tipped brush to refine small areas. Allow touch-ups to dry fully before assessing whether additional layers are needed.

Final Drying and Curing Time

While the paint may feel dry to the touch within a few hours, it actually takes days—sometimes weeks—for the paint to fully cure. During this curing period, avoid placing furniture or objects directly against painted millwork, as even slight pressure can leave marks.

If painting millwork around doors and windows, check for any areas where the paint may have sealed moving parts together. Use a sharp utility knife to score along the edges where paint may have stuck, then carefully open and close the windows or doors to prevent future sticking. Applying a small amount of wax or petroleum jelly to the edges can also help avoid adhesion issues.

Crisp Lines and Professional Details

To achieve a sharp, clean finish, remove painter’s tape at the right moment. Ideally, this should be done while the paint is still slightly tacky to prevent peeling. If the tape is removed too late and the paint has dried completely, use a utility knife to score along the edge before pulling the tape away at a 45-degree angle.

For any paint that has bled under the tape, use a fine-tipped artist’s brush and a steady hand to correct the lines. If the contrast between the trim and wall is stark, a thin bead of caulk along the joint between the wall and millwork can provide a seamless, professional look.

Protecting the Painted Surface for Longevity

Once the paint has fully dried and cured, consider adding an extra layer of protection in high-traffic areas. A clear water-based polyurethane topcoat can add durability without altering the color or finish of the paint. This is especially useful for baseboards and door casings that are more prone to scuffs and impact damage.

Regular maintenance, such as wiping down millwork with a damp cloth and avoiding harsh chemical cleaners, will help preserve the finish. In case of minor chips or scratches, keeping a small container of leftover paint on hand makes it easy to do quick touch-ups when needed.

For those seeking expert craftsmanship and precision in trim and molding installation, a Toronto trim carpenter can provide custom detailing that complements a high-quality paint job. However, with careful execution and attention to these final steps, a DIY approach to painting millwork can achieve equally impressive, long-lasting results.

Step 5: Maintaining Painted Millwork for Long-Lasting Results

Once the hard work of painting millwork is complete, maintaining the fresh, polished look is key to ensuring it lasts for years. While high-quality paint and proper application go a long way in durability, regular care and minor touch-ups will keep millwork looking as good as new.

Routine Cleaning and Preventing Wear

Dust and dirt can build up on painted surfaces over time, dulling their appearance. A simple routine of wiping millwork down with a damp microfiber cloth every few weeks will prevent grime from settling in. Avoid using harsh chemical cleaners, as they can break down the paint’s finish and lead to chipping or discoloration.

For high-traffic areas like baseboards and door and window casing, where scuffs and marks are more common, a mild soap and water solution can help remove stains without damaging the paint. If needed, a magic eraser can be lightly used on stubborn spots, but it’s important not to scrub too hard to avoid wearing down the finish.

Touch-Ups and Minor Repairs

Even with the best preparation and highest-quality materials, minor chips and scratches can happen. Keeping a small container of leftover paint on hand makes it easy to fix small imperfections as they appear. When touching up, use a fine-tipped brush and apply thin, even layers to blend seamlessly with the surrounding area.

If more significant wear occurs over time, lightly sanding the affected area and applying a fresh coat of paint can restore the millwork’s original smoothness. Be sure to clean and dry the area before painting to ensure proper adhesion.

Protecting Millwork from Damage

To further extend the life of painted millwork, take preventative steps to reduce impact damage. Furniture pads can help prevent accidental dents from chairs or tables bumping into baseboards, while installing door stoppers can protect trim around doors from frequent use.

If millwork is located in an area with fluctuating humidity levels, such as near windows or exterior doors, keeping an eye on moisture buildup is important. Excess moisture can cause wood expansion and contraction, leading to cracks in the paint. Ensuring proper ventilation and sealing gaps with caulk when necessary can help mitigate this issue.

When to Consider Professional Help

For extensive millwork maintenance or large-scale repainting, professional services may be the best option. Experts in Toronto carpentry services can assess damage, repair worn-out sections, and ensure a high-quality refinishing job that matches the original look.

By following these simple maintenance steps, painted millwork can retain its clean, polished appearance for years. With proper care, even the most intricate trim and molding will continue to enhance the beauty of your home long after the final coat of paint has dried.

Achieving a Professional Millwork Finish That Lasts

Painting millwork is more than just a simple home improvement task—it’s a way to enhance the overall character and elegance of a space. When done correctly, freshly painted millwork can add depth, contrast, and sophistication to a room, seamlessly tying together different design elements. However, the key to a flawless finish lies in the details. From thorough preparation and priming to careful paint application and finishing touches, every step contributes to the durability and beauty of the final result.

Maintaining your painted millwork is just as important as the painting process itself. Regular cleaning with a damp microfiber cloth prevents dust buildup, while addressing scuffs and chips early on helps keep the paint looking fresh. For high-traffic areas such as baseboards and door casings, applying an extra protective layer of clear water-based polyurethane can provide additional durability. Preventative measures like installing door stoppers and using furniture pads can also protect your trim from unnecessary damage, helping your hard work last for years.