Builders, architects, and contractors typically recommend painting PVC trim, whether to match custom color schemes, complement exterior details, or simply keep white trim looking cleaner for longer. However, proper preparation and the right paint selection are essential—using the wrong type can lead to peeling, cracking, or heat-related expansion issues.
By following the right techniques, you can achieve a durable, attractive finish that enhances the longevity of your PVC trim. In this guide, we’ll cover everything you need to know, from the best paint options to common mistakes to avoid.
Does PVC Trim Need to Be Painted?
No, but it can make the PVC more durable. Unlike wood, it won’t rot, absorb moisture, or attract insects, making it a low-maintenance option straight from the supplier. However, because PVC (unlike wood) is impervious to moisture, the paint will adhere to the PVC substrate for as long as the paint is warranted for. In some cases, that’s up to 30 years.
Extruded cellular PVC has a smooth, factory-finished surface and does not require paint for protection. It’s designed to withstand the elements without additional coatings. On the other hand, milled cellular PVC, which has a more porous surface, can definitely benefit from painting. The paint helps seal the exposed pores, reducing dirt buildup and keeping the trim looking clean longer.
From a design standpoint, painting PVC trim expands color options beyond the standard white it typically comes in. For builders and architects working on custom designs, painting allows the trim to match the siding, complement architectural details, or blend seamlessly into historic restorations. Beyond aesthetics, painting PVC trim (even in white) provides a maintenance benefit by sealing the surface and machined edges, helping to reduce dirt buildup, mildew, and discoloration over time. While it’s not required for durability, painting PVC trim can enhance both its appearance and long-term cleanliness.
Choosing the Right Paint for PVC Trim
Selecting the right paint is critical for proper adhesion and long-term durability. We can’t stress this enough–you need the correct paint. Unlike wood, PVC has a slick, non-porous surface, requiring specific paint types to bond effectively.For light colors (LRV 57 and above), a high-quality 100% acrylic latex or acrylic blend paint is recommended. These paints are flexible, adhere well to PVC, and provide strong UV resistance, preventing fading or chalking over time.
Additional precautions are needed for dark colors (LRV 56 and below). Dark paint absorbs more heat, which can cause PVC to expand and contract, leading to warping or buckling. To prevent this, use a solar reflective coating designed for vinyl and PVC surfaces, such as Sherwin-Williams VinylSafe, Benjamin Moore Colors for Vinyl, PPG’s 897 colorang, or LTC Hydrotop PVC Premium by Lechler Paint. You can also check out this list of recommended paints to find out what will work best for your project. These paints reflect more heat than traditional dark colors, reducing the risk of thermal expansion issues.
By choosing the right type of paint, builders and homeowners can achieve a long-lasting, professional finish without compromising the integrity of the trim.
How to Paint PVC Trim
Painting PVC trim requires careful preparation and the right materials for proper adhesion and a long-lasting finish. Unlike wood, PVC is non-porous, meaning standard paints may not bond well without appropriate surface treatment. Follow these best practices for a smooth, professional-looking result.- Clean the Surface – Before painting, remove any dust, dirt, or grease using mild soap and water or a PVC cleaner. A clean surface helps the paint adhere properly.
- Scuff the Surface (if needed) – If the trim has a glossy finish, lightly sanding it with fine-grit sandpaper (220 grit) can improve adhesion. Avoid over-sanding, as this can damage the material.
- Use Primer – While primer is usually not required, some paint manufacturers recommend a bonding primer for better durability and coverage. Always check the paint label for guidance.
- Paint After Installation – It's best to paint the PVC trim after installation to avoid unnecessary touch-ups from fasteners and cutting marks.
- Curing Time – While paint on PVC dries quickly, it can take up to 30 days to cure fully. Avoid excessive handling or pressure washing during this period to allow the paint to set correctly.
Common Mistakes to Avoid
Painting PVC trim isn’t difficult (we wouldn’t consider it a DIY job for an amateur, though), but skipping specific steps can lead to poor results.
To avoid peeling, warping, or premature failure, watch out for these common mistakes:
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Using the Wrong Paint – Standard latex or oil-based paints don’t bond well with PVC and may start peeling or cracking over time. Always use 100% acrylic latex or a vinyl-safe paint for dark colors.
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Skipping Surface Prep – PVC’s smooth surface can resist paint if it’s not cleaned correctly or scuffed. Failing to remove dirt, grease, or factory coatings can result in poor adhesion and uneven coverage.
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Ignoring LRV Guidelines – Dark colors absorb heat, which can cause PVC to expand and contract. If painting with a dark color (LRV 56 or lower), use solar reflective paint to prevent warping and distortion.
Should You Paint Your PVC Trim?
Painting PVC trim is not only possible, but we often recommend it. While PVC is naturally durable and resistant to the elements, painting it (whether in white or another color) helps seal the surface and machined edges, reducing dirt buildup, mildew, and discoloration over time. If the project calls for a custom color to match the siding, doors, or architectural details, painting is a great way to achieve a seamless, polished look.
Even if you plan to keep the trim white, applying a coat of high-quality paint can provide added protection and keep it looking cleaner for longer. With the right preparation and paint selection, PVC trim can be finished beautifully while maintaining its low-maintenance benefits.
Still unsure? Contact us and we'll be happy to help.