Skimming Plaster Guide: How to Skim a Wall & Common Questions Answered

The Art of Skimming Plaster for Smooth, Perfect Walls

Skimming plaster is one of the most effective ways to achieve smooth, modern walls and ceilings. Whether you’re renovating an older property, repairing damaged plaster, or preparing walls for painting or wallpapering, skimming plaster can completely transform uneven surfaces into a flawless finish.

In this guide, we’ll explain what skimming plaster is, why it’s used, the tools and materials needed, a step-by-step skimming process, and answers to the most common skimming plaster questions.

What Is Skimming Plaster?

Skimming plaster is the process of applying a thin layer of finishing plaster over an existing wall or ceiling. The goal is to create a smooth, even surface ready for decoration.

It’s commonly used to:

Refresh tired or damaged walls
Cover cracks, small holes, and imperfections
Prepare surfaces for painting or wallpapering

Why Skim Plaster?

Skimming plaster offers several benefits for both homeowners and landlords:

Improves Appearance – Creates smooth, professional-looking walls
Perfect for Painting & Wallpapering – A flat surface ensures a high-quality finish
Repairs Damaged Walls – Covers cracks, dents, and uneven areas
Adds Property Value – Well-finished walls improve overall presentation

Materials Needed to Skim a Room

To skim plaster successfully, you’ll need the following materials:

Multi-Finish Plaster – Ideal for smooth finishing coats
PVA Glue – Primes walls and improves plaster adhesion
Scrim Tape – Prevents cracks from reappearing
Angle Beads – Reinforces corners and edges around doors and windows

These materials work together to create a strong, durable, and smooth finish for walls and ceilings.

Tools You’ll Need for Skimming Plaster

Plastering trowel
Hawk (to hold plaster)
Mixing bucket
Drill with paddle mixer
Jointing or filling knife
Plasterer’s float
Sandpaper or sanding block
Clean water and spray bottle
Dust sheets and protective gear

Step-by-Step Guide to Skimming Plaster

1. Preparation

Protect the Area
Cover floors and furniture with dust sheets and wear protective equipment.

Clean the Surface
Remove loose plaster, flaking paint, and wallpaper. The wall must be clean and dry.

Prime the Wall
Apply a PVA and water mix (usually 1:4). Allow it to become tacky before plastering.

2. Mixing the Plaster

Add clean water to the bucket first
Gradually add plaster powder
Mix until smooth and creamy
Let it rest briefly, then remix

3. Apply the First Coat

Load plaster onto the hawk
Apply a thin coat (2–3mm) using smooth upward strokes
Work from the top of the wall down

Don’t worry if it’s not perfect at this stage.

4. Smooth the Surface

Let the plaster firm up (10–15 minutes)
Smooth ridges with a clean, damp trowel

5. Apply the Second Coat

Apply a thinner coat (1–2mm)
Focus on filling imperfections
Work methodically from top to bottom

6. Final Polishing

Allow plaster to firm up again
Lightly mist with water if needed
Trowel for a smooth, polished finish

Once dry, the wall will be ready for painting or wallpapering.

Tips for Successful Skimming

Work Quickly – Plaster sets fast
Keep Tools Clean – Dried plaster causes imperfections
Practice First – Try a small area if you’re new

Common Questions About Skimming Plaster

How Do You Skim a Wall?

Clean and PVA the surface
Apply scrim tape and angle beads
Mix Multi-Finish plaster
Apply a thin, even coat
Smooth as the plaster sets
Allow to dry fully before decorating

What Tools Do You Use to Skim?

Plastering trowel
Hawk
Mixing bucket and drill
Plasterer’s float
Jointing knife
Spray bottle

Is Skimming Cheaper Than Plastering?

Yes, skimming is usually cheaper than full replastering because it uses less material and takes less time. Costs depend on wall condition, size, and labour rates.

Can You Skim Over Old Plaster or Paint?

Yes, as long as the surface is sound. Clean it thoroughly, apply PVA, fix cracks with scrim tape, and skim as normal.

How Many Coats Are Needed to Skim a Wall?

Most walls need two thin coats to achieve a smooth, professional finish.

Do You Need PVA Before Skimming?

Yes. PVA prevents the plaster from drying too quickly and improves adhesion, reducing the risk of cracks.

How Long Does Skimming Take to Dry Before Painting?

Skimmed plaster usually takes 2–3 days to dry, depending on ventilation and humidity. The wall should turn a uniform pale colour before painting. Always apply a mist coat first.

How Much Does It Cost to Replaster a 3-Bed House in the UK?

On average, replastering a 3-bedroom house costs between £3,000 and £5,000, depending on preparation work, materials, and labour.

How Many Square Metres Can a Plasterer Skim in a Day?

A skilled plasterer can typically skim 50–70 m² per day, depending on site conditions and complexity.

What Is the Day Rate for Plasterers in London?

Plasterers in London typically charge £150–£250 per day, depending on experience and job requirements.

Conclusion

Skimming plaster is a highly effective way to achieve smooth, modern walls and ceilings. With the right preparation, tools, and techniques, you can create a professional finish that enhances both the appearance and value of your property.

Whether you’re a DIY enthusiast or planning to hire a professional plasterer, understanding the skimming process helps ensure the best results every time.

Ready to Enhance Your Home?

Contact Plastering Services London today for a free consultation and quote. Let us transform your walls and ceilings with our expert plastering services.

📞 Call us at: 07427123200

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