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The ultimate guide to interior wall finishing techniques

When it comes to achieving a polished and professional look for your interiors, the finishing touches on your walls are essential.

Whether you’re updating a single room or embarking on a full renovation, understanding the various wall finishing techniques and materials available can make a significant difference in the final result.

This guide will explore key methods such as skimming, plastering, and painting, along with the materials you’ll need for each process.

  1. Skimming

Skimming is a technique used to apply a thin layer of plaster over existing walls to create a smooth surface.

This method is particularly beneficial for walls that are uneven or have minor imperfections.

It’s important to prepare the surface properly, especially if you are skimming over painted walls.

Clean the wall thoroughly, and if the paint is glossy, consider sanding it lightly or applying a bonding agent to improve adhesion.

The ultimate guide to interior wall finishing techniques (1)
Step-by-step instructions:
  1. Prepare the surface:
    • Start by cleaning the wall to remove dust, grease, or loose material.
    • If the wall is smooth or non-porous, applying a bonding agent like Thistle Bond-it Plaster Bonding Agent can enhance adhesion, preventing the skim coat from delaminating.
  2. Gather materials:
  3. Mix the skimcoat:
    • Pour the recommended amount of skimcoat plaster into the mixing bucket.
    • Add water according to the manufacturer’s instructions, mixing thoroughly until you achieve a creamy, lump-free consistency.
  4. Apply the skimcoat:
    • Using the hawk to hold the plaster, apply it with a trowel starting from the top of the wall and working downwards in smooth, even strokes.
    • Aim for a thin layer, approximately 2-3mm thick.
  5. Smooth the finish:
    • Once applied, use a clean trowel to smooth the surface further, working from one corner to the other.
    • Allow to dry according to the manufacturer’s instructions (typically 2-3 hours), ensuring it is fully dry before proceeding to paint or wallpaper.

Pro Tip: Achieving a perfectly smooth skim requires patience and skill, and it may take several attempts to get it right. If you’re aiming for a flawless result and don’t have much experience, consider hiring a professional to ensure the best outcome.

  1. Plastering

Plastering involves applying a thicker layer of plaster to create a durable, textured finish.

This technique is often used in new builds or when renovating older properties where the original plaster may have cracked or deteriorated.

Step-by-step instructions:
  1. Surface preparation:
    • Ensure the wall is clean and free of loose debris. Repair any significant cracks or holes before plastering.
    • Use Thistle Bond-it if applying plaster to smooth surfaces or existing plaster for improved adhesion.
  2. Gather materials:
  3. Mix the undercoat plaster:
    • In a clean mixing bucket, combine the undercoat plaster with water as per the manufacturer’s instructions.
    • Mix until you reach a workable consistency.
  4. Apply the undercoat:
    • Start from the top, using a trowel to apply the plaster in a uniform layer, working your way down the wall.
    • Use a float to create an even surface.
  5. Allow to dry:
    • Let the undercoat dry completely (usually 24 hours) before applying the finish coat.
  6. Apply finish plaster:
    • Once the undercoat is dry, mix the Gyproc Skimcoat and apply it over the dried undercoat using the same trowel technique.
    • Aim for a smooth, even layer, allowing the skimcoat to dry as per the instructions.
  7. Sanding and final touches:
    • Once dry, sand the surface lightly to ensure a flawless finish ready for painting or wallpapering.

Pro Tip: Plastering is a skilled technique that takes years to master. If it’s your first attempt, don’t expect a perfect result right away. For complex jobs or larger areas, it may be worth seeking help from a professional plasterer to ensure a smooth and durable finish.

  1. Painting

Once the walls are skimmed or plastered, the next step is painting.

A well-finished wall will not only look great but will also enhance the longevity of the paint application.

It’s essential to ensure that the plastered walls are completely dry before beginning this step.

Step-by-step instructions:
  1. Preparation:
    • Ensure that the plastered walls are completely dry. A dry plaster wall will typically appear lighter in colour and feel hard to the touch. Lightly sand any rough areas if needed.
  2. Gather materials:
  3. Prime the walls:
    • Apply a coat of primer to seal the plaster. This step is crucial as it prevents the paint from soaking into the plaster and ensures better adhesion.
  4. Tape Edges:
    • Use painter’s tape to protect edges and create clean lines where the wall meets the ceiling or trim.
  5. Mix the paint:
    • Stir the paint thoroughly before use. If needed, thin it with water according to the manufacturer’s instructions.
  6. Paint the walls:
    • Start with a brush for corners and edges, then switch to a roller for the larger areas.
    • Apply at least two coats of paint for full coverage, allowing each coat to dry before applying the next.
  7. Final touches:
    • Remove painter’s tape carefully while the paint is still slightly wet for clean lines.
    • Inspect the finish and touch up any areas if necessary.

Mastering interior wall finishing techniques involves understanding the right methods and materials to achieve the desired look and create surfaces that are not only beautiful but also durable and long-lasting. With the right approach and materials, your renovation projects will yield stunning results that enhance the aesthetic of any space.

Grab these fantastic seasonal promotions while they last

As you embark on your projects, don’t forget to take advantage of our Fall in Love with Autumn Colours promotion with 25% off selected Dulux paints and check out Gyproc’s Golden Trowel Promotion for a chance to win great prizes with your purchase of Gyproc Skimcoat!

Happy decorating!

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