Can You Paint Composite Decking?

Posted by Premium Decking Supply on July 24, 2024

Composite decking is favored for its durability, low maintenance, and eco-friendly benefits. But after years of exposure to the elements, you might wonder if you can refresh your deck with a coat of paint or stain. The short answer is yes, but it depends on the type of composite decking you have. Here’s a detailed explanation on whether you can paint composite decking, the preparation involved, and the steps to achieve the best results.

What to Know Before Painting Composite Decking

Types of Composite Decking:

1. Uncapped Composite Decking: Older composite decks, usually pre-2010, are uncapped, meaning they don’t have a protective plastic shell. These are easier to paint or stain.
2. Capped Composite Decking: Newer composite decks have a protective polymer cap that resists stains and scratches but makes painting difficult. Painting capped decking can void the warranty and cause the paint to peel.

Manufacturer Guidelines:

Always consult the manufacturer’s guidelines before painting or staining composite decking to ensure you don’t void any warranties or damage the deck.

Increased Maintenance:

Painted or stained composite decks require regular maintenance, unlike their original low-maintenance state. This can include periodic repainting or restaining as the finish wears off.

How to Paint Composite Decking

Materials Needed:

• Exterior-rated acrylic latex paint
• Primer (if needed)
• Paint roller and brush
• 240-grit sandpaper
• Deck cleaner
• Cleaning brush
• Hose with spray attachment

Steps to Paint Composite Decking:

1. Clean the Deck:
   • Remove all furniture and decor.
   • Sweep the surface to remove debris.
   • Use a deck cleaner suitable for your composite material and scrub the deck thoroughly.
   • Rinse and let the deck dry completely. Ensure all mold and mildew are removed.
2. Sand the Deck (if necessary):
   • Use 240-grit sandpaper to lightly sand the deck surface to create a rough texture for the paint to adhere to.
   • Clean off any dust from sanding with a broom, leaf blower, or cloth.
3. Apply Primer:
   • Use a latex primer to cover the deck surface. Apply with a brush for gaps and a roller for broader surfaces.
   • Allow the primer to dry completely according to the manufacturer’s instructions.
4. Paint the Deck:
   • Apply an even coat of acrylic latex paint using a roller and brush for details.
   • Let the first coat dry completely and apply a second coat if necessary.
   • Allow the paint to dry thoroughly before using the deck.
5. Optional: Seal Over the Paint:
   • Apply a sealer over the paint to increase durability and reduce maintenance.
   • Use a roller to apply the sealer and let it dry completely.

How to Stain Composite Decking

Staining is similar to painting but requires products specifically designed for staining composite materials.

Steps to Stain Composite Decking:

1. Remove Plants and Furniture:
   • Clear the deck of all items to ensure full access.
2. Clean the Deck Surface:
   • Follow the same cleaning steps as painting to ensure the deck is free of dirt and debris.
3. Apply Stain:
   • Choose a weatherproofing stain and sealer designed for composite decking.
   • Apply the stain using a pad applicator, brush, roller, or sprayer.
   • Allow the stain to dry completely. Apply a second coat if needed for a deeper finish.
4. Maintain the Deck:
   • Wash the deck at least twice a year.
   • Apply a maintenance coat of stain or paint when necessary.

Painting/Staining vs. Replacing Your Composite Deck

While painting or staining can refresh the look of your composite deck, it introduces additional maintenance. If you prefer a low-maintenance solution, consider replacing your old composite deck with newer capped composite boards that offer long-lasting beauty without the need for painting or staining.

Conclusion

Painting or staining composite decking is possible, primarily for older uncapped boards. It involves thorough cleaning, possible sanding, priming, and applying high-quality acrylic latex paint or weatherproofing stain. However, this process increases maintenance needs, which contradicts the low-maintenance appeal of composite decking. For a long-term, low-maintenance solution, consider upgrading to modern capped composite decking.

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