Painting Decking

Is your decking looking dull? Paints and stains not only refresh the look of your decking, but also extend the life of it. B&Q offers a range of decking oil and stains to update the look of your deck and protect it against weathering.

Stains and oils help to protect your deck by creating a waterproof barrier that protects against weathering, warping, swelling, drying and splitting and foot traffic. Some products can also contain an algaecide to help protect from green algae and mould growth.

  • What you'll need

    • Protective clothing & dustsheets
    • Outdoor broom
    • Deck cleaning solution
    • Medium & course grade sandpaper
    • Decking stain or oil
    • An extendable short pile roller for smooth decks or a long pile roller for grooved decks & a paint tray. Or large & small shed & fence brushes. Or a deck pad & extension pole.
    • Brush cleaner or solvent

    Safety first

    Cleaning solutions and paint products may contain harmful chemicals. In addition, cleaning painted surfaces can create a lot of dust, so be sure to wear protective clothing including goggles, gloves, and a face mask at all times.

    Shop protective clothing
  • Step 1: Clean the area

    Use an outdoor broom to brush the surface to remove any debris and surface dirt.

    If the surfaces have a build up of dirt, grease, fungus, stains, algae or mildew, scrub them with a specialist deck cleaner. Always read the instructions of the product prior to use. Rinse with a pressure washer or, alternatively, a hose with good pressure then allow to dry.

    Shop decking treatments
  • Step 2: Repair damage

    Once the deck is dry use a course sandpaper to smooth any rough areas.

    Check for any loose or old rusty nails and screws, remove these and replace with new nails or screws in the next diameter size up.

    If there are any divots or dents you wish to fill, use an exterior grade filler to fill them and sand back until smooth with a medium grade sandpaper.

    Shop wood filler
  • Step 3: Protect from splashes and spills

    Protect any paving, walls and plants using dust sheets and ensure you wear protective clothing throughout the job.

    Shop dust sheets
  • Choosing oils & stains

    Oils: These enhance the natural colour and grain of the deck. It penetrates deep in to the wood to replace natural oils and resins. They can sometimes tint the colour of the wood.

    Stains: These can revitalise the colour of your deck and provide a rich depth of colour. They are ideal if you want to change the colour of your deck.

    Shop decking stains & oils
  • Step 4: Applying the deck stain or oil

    Always read the instructions of the product prior to use, check for drying
    times and aim to paint the deck when you have good dry weather.

    Apply your chosen product working the length of the decking sections
    methodically. Use a small brush to apply the product to hard to reach
    areas and the ends of the wood as these areas are most susceptible to
    rot and deterioration.

    Follow the instructions for the number of coats required. Leave each
    coat to dry thoroughly before applying the next.

    Allow the paint to dry thoroughly before using the deck.

    Shop brushes, rollers & accessories

    Top tip

    Always stir the product well before you use it to ensure an even colour is achieved when applied. Oil based products can settle if they are left standing for long periods of time.

  • Last step: Finishing up

    Remaining paints, stains and oils should be stored or disposed of
    according to their individual instructions. Do not empty down drains.

    Remove as much of the product from the brushes, rollers or paint
    pads before cleaning.

    If you have used water-based paints, simply wash with water. Work a
    little soap into them, rinse them clean and leave them to dry.

    If you have used oil or solvent-based paints or stains, simply clean with
    a solvent such as white spirit.

    Shop treatments & cleaners

    Top tip

    Resting brushes in a jar for any length of time is certain to ruin them, so suspend the brush, or use a specially designed cleaning tub.