Painting Doors

Feel like refreshing the colour of your front door? B&Q offers a range of gloss paints in a wide range of colours and finishes that will update the look of your exterior wood work and help preserve it against weathering.

Exterior paints are designed to provide protection against all weathers. They flex with the movement of the wood to resist cracking, peeling and blistering. Some paints can resist mould growth and can come with a guarantee for many years.

  • How to paint a door

    What you'll need

    • Protective clothing & dustsheets
    • Household detergent, bucket & anti-fungal solution
    • Flat scraper
    • Fine & medium graded sandpaper
    • Masking tape & newspaper
    • Lint free cloth & metholated spirits
    • Screwdriver
    • Exterior filler & filling knife
    • A 10mm foam gloss roller & paint tray
    • Small 2" - 3" synthetic bristle paintbrush if your using a water based paint
    • Small 2" - 3" synthetic or natural bristle paintbrush if your using an oil based paint
    • Knotting solution
    • Primer
    • Exterior paint & undercoat
    • 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.

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  • Step 1: Clean the area

    Remove as many door accessories and metal work as you can, such as numbers, handles and letterboxes.

    Wash the door with household detergent and rinse well with water. Problem areas affected by mould or algae should be thoroughly cleaned and treated by a fungicidal wash. Always read the instructions of the product prior to use.

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  • Step 2: Protect from splashes and spills

    Lay down dust sheets around the door to protect your floor and to help make clearing up easier, protect yourself with a painting overall.

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  • Step 3: Prepare the surface

    Use a flat scraper to remove any flaking and blistered paint. A chemical stripper or a hot air gun may be used for this. Follow manufacturer's instructions for best results. If the existing paintwork is intact, it is not necessary to strip it as it can be painted over.

    Remember to wear a dust mask when sanding. Sand the door with a medium grade sandpaper, you can do this by hand or using an electric sander for speed. Sand in the direction of the grain to minimise scratch marks and be careful not to damage corners or mouldings.

    Once finished, go over the area again with fine grade sandpaper.

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  • Step 4: Repair damage

    Use an exterior grade filler to fill cracks or dents and to smooth uneven surfaces, then sand down again with a fine grade sandpaper.

    Wipe the door with a lint free cloth and metholated spirits to remove all dust.

    Mask off any door furniture or other details to protect them from paint.

    Shake out the dust sheets away from the door as these will now have debris on from the sanding work then reposition the dust sheets.

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  • Step 5: Apply the paint

    Painting bare wood: Apply knotting solution with a small brush. Coat with
    primer when dry.

    Repainting painted wood: Prime any bare exposed wood with an exterior
    grade primer.

    If repainting the door a similar colour, a single coat of gloss paint is the
    best option.

    If you have had to use a lot of filler or you are changing the colour of
    the door a compatible colour undercoat is probably needed. Always
    check the instructions.

    Apply the paint by stating with the panels then the board work, make your
    last brush strokes in the same direction as the grain.

    When the paint is dry, remove masking tape and reaffix the door furniture.

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    Top tip

    Oil and solvent based paints give off harmful fumes. Ensure the room is well ventilated when applying paint, and when drying.

  • 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.

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    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.