Plastering corners – the ultimate guide

Read our tips on how to plaster inner and outer corners before painting or wallpapering.

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Four smart tips
  1. Steg 1/4 Plastering corners

  2. Steg 2/4 Plastering inner corners

  3. Steg 3/4 Plastering outer corners

  4. Steg 4/4 Last plastering

Detaljerade instruktioner i text

Så gör du:
  1. 1
    Plastering corners
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  2. 2
    Plastering inner corners
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  3. 3
    Plastering outer corners
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  4. 4
    Last plastering
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  1. Four smart tips
    1/4 — Plastering corners
  2. Four smart tips
    2/4 — Plastering inner corners
  3. Four smart tips
    3/4 — Plastering outer corners
  4. Four smart tips
    4/4 — Last plastering

Step by Step

  1. 1
    Plastering corners
  2. 2
    Plastering inner corners
  3. 3
    Plastering outer corners
  4. 4
    Last plastering

  1. 1

    Plastering corners

    Always use two wide filling knifes. A smaller one to fit in the bucket and a large one to hold jointing compound. Keep in mind that the jointing compound should be intended for jointing tape – for example, ordinary plaster is too dry.

    Använd två spacklar vid bredspackling
  2. 2

    Plastering inner corners

    When you get to an inside corner, where two walls meet, you’ll need jointing tape. The jointing tape are designed to join plasterboard together and reduce the risk of cracking. Apply jointing compound in the corner with a wide filling knife. Fold the tape lengthwise at 90 degrees and press it into the jointing compound. Then plaster over the strip wet on wet. Let dry.

    dras spackelremsa i innerhörnet

    Add another coat of jointing compound and let dry. The jointing compound shrinks when it dries, so you will need to plaster several times.

    drar ett lager spackel med spackelspade
  3. 3

    Plastering outer corners

    To get strong and straight corners, use metal corner protectors or metal-reinforced strips. Corner protectors secure against wear and tear. Apply jointing compound on both sides of the corner. Install the strip according to the manufacturer’s instructions, or plaster the strip the first time “wet on wet”. Let dry.

    Add another layer of plaster and allow to dry.

    Tip!

    The metal strips are also suitable for use at the angle between the ceiling and the wall if you do not want to use a cornice.
    spacklar ytterhörn
  4. 4

    Last plastering

    Sometimes an extra coat of plaster is needed, depending on how much the plaster has shrunk when it dries. On painted walls, it may also be necessary to repaint once the walls have been primed. Be careful when sanding plastered surfaces. Use a hinged sanding tool and a extension pole – and don’t forget respiratory protection. Wipe off the sanding dust with a microfibre cloth.

    There you go! Now you can start painting or wallpapering:

    Paint walls – how to, step by step
    Wallpapering – how to, step by step