Composite decking is a popular alternative to natural wood decking. It is made from a blend of wood fibers and plastic resins. The combination creates a durable, low maintenance material that won’t rot, crack or splinter like traditional wood. Composite decking comes pre-colored, so you don’t need to paint or stain it. However, some homeowners do want to change the color of their composite deck by painting it. Painting composite deck can update the look or hide flaws. But not all paints will properly adhere to composite. You need to use the right prep work and paint for a lasting finish.
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Can You Paint Composite Decking?
Yes, you can paint composite decking. While composite decking is designed to not need painting, it is possible to apply paint to alter the deck’s appearance. Proper prep work and using acrylic latex paint will allow the paint to adhere properly.
Paint allows you to update the color of your composite deck and hide any stains, mold or flaws. It provides a protective barrier and restores the deck’s appearance. Be aware that painting composite decking will require more maintenance over time than leaving it unpainted. The paint will need periodic touch ups, cleaning and recoating as it wears.
What Kind of Paint Should You Use?
Acrylic latex paint is the best type of paint for adhering to composite decking. The key is using 100% acrylic latex exterior paint rather than oil-based or other types of latex paint. Here’s why:
- 100% acrylic latex paint is flexible, allowing it to resist cracking and peeling as the deck expands and contracts.
- It’s designed for adhesion to plastics, which is a component in composite decking.
- Latex acrylic paint breathes, allowing moisture to escape rather than getting trapped.
- Exterior acrylic paint is formulated to withstand outdoor weathering.
- It resists mildew growth on the surface.
Oil-based paints and vinyl acrylic latex paints do not adhere as well to composite decks. They will be prone to chipping, cracking and peeling off. Stick with 100% exterior acrylic latex paint for the most durable finish.
Recommended 100% Acrylic Latex Paints
- Behr Premium Plus Ultra Exterior Paint
- KILZ Exterior Paint
- PPG Timeless Exterior Paint
- Sherwin-Williams Resilience Exterior Acrylic Latex
- Valspar Duramax Exterior Acrylic Latex
Choose paint colors marked as suitable for plastics, masonry, vinyl or metal for best adhesion. Neutral and lighter colors work best to reflect heat and hide flaws. Stay away from dark colors that can fade quickly, show scuffs and get very hot in the sun.
Prep Work for Painting Composite Deck
Proper prep work before painting is crucial for the paint to properly stick to the composite decking. Here are the key steps:
Clean
Composite decking needs to be thoroughly cleaned before painting. Use a deck cleaner and stiff bristle brush to remove dirt, mildew stains, loose paint and other residue. Rinse off any cleaner residue. Allow the deck to fully dry for at least 24 hours before painting.
Sand
Lightly sand the deck with 80-120 grit sandpaper. This roughens up the surface for better paint adhesion. Be careful not to scuff too deeply. Sweep away sanding dust.
Repair Flaws
Inspect the deck and use caulk or epoxy filler to patch any cracks, holes, splinters or other flaws. Sand smooth when dry. This provides a flat surface for the paint.
Mask Off
Mask off any areas you don’t want painted, like deck railings, siding or trim. Remove light fixtures if possible. Use painters tape and drop cloths to protect surrounding surfaces.
Prime
Most composite decks need to be primed before painting, especially if changing colors. Use 100% acrylic latex primer tinted to match the topcoat paint color. This helps the paint better adhere. Allow primer to dry per the manufacturer’s directions before painting.
How to Paint a Composite Deck
Once your prep work is complete, you’re ready to start painting. Follow these steps:
- Apply exterior acrylic latex primer if needed and let dry completely.
- Use a high quality brush, mini roller or airless sprayer to apply two coats of 100% acrylic latex exterior paint. Allow first coat to dry 4-6 hours before adding the second coat.
- Paint in long straight strokes with a 50% overlap. Work in 3-4 foot sections.
- Maintain a wet edge and move quickly to prevent lap marks.
- Allow paint to cure 24-48 hours before light foot traffic. Wait 3-4 days before replacing furniture.
Apply paint when temperatures are between 50-90°F during dry weather. Avoid painting in direct sunlight or if rain is expected. Working in the shade helps the paint dry more evenly. Proper prep work and using 100% acrylic latex exterior paint will result in a durable, lasting paint finish on your composite decking.
Maintenance for Painted Composite Decks
Painting your composite decking adds an extra layer of protection. But the paint will need periodic maintenance to keep it looking its best. Plan on:
- Washing the deck 1-2 times per year using composite deck cleaner and gentle scrub brush.
- Reapplying paint every 2-4 years depending on sun exposure and traffic.
- Touching up paint scrapes or scratches annually.
- Checking for cracking or peeling paint and repainting affected areas as needed.
Avoid using pressure washers which can damage the paint finish. Sweep away debris like leaves frequently to prevent buildup. Address any mildew or algae growth right away before it etches into the paint. Proper maintenance will extend the life of your painted composite decking.
Conclusion
It is possible to paint composite decking with proper preparation and using the right type of paint. 100% acrylic latex exterior paint adheres best. Thorough cleaning, light sanding, repairing flaws and priming are key to prep the deck. Apply the paint in two coats with a brush, roller or sprayer. Maintain the painted deck by washing periodically, reapplying paint every few years and doing touch ups. With the right steps, you can change the color of composite decking or refresh the look with a painted finish that will last.