Plaster Repairs, Skimming, and Professional Services in Borehamwood, Serving North London and Hertfordshire

What Is Skimming?

Skimming is the process of applying a fine, 3mm coat of plaster to rough or uneven surfaces, creating a perfectly smooth and level finish. This is ideal for old, patchy walls and ceilings, offering a seamless surface ready for painting or wallpapering. The smooth finish achieved through skimming not only enhances the appearance of your home but also provides a much more durable and stable surface for decorating.

It’s important to allow the plaster to dry fully before you begin painting or applying wallpaper. Typically, plaster requires 7–14 days to dry, but if damp work has been involved, it may take up to 26 weeks to fully cure.

Repairing and Preventing Cracks

When it comes to preventing cracks, plasterboard is generally the most reliable surface, provided it’s properly prepared. Joints should be prepped and scrimmed carefully before skimming to avoid cracking later. When skimming over older, “blown” plaster, however, there’s always a higher risk of hairline cracks forming. To mitigate this, I recommend using a fibre mesh within the base coat and applying two coats of skim for added protection.

While this method is more expensive, it ensures long-term durability by accommodating the natural movement of your building. This prevents cracks from forming over time. Additionally, a weaker plaster mix provides more flexibility, which reduces the likelihood of cracks appearing.

Dealing with Blown Plaster

Wondering if your plaster is “blown”? A simple knock on the wall can tell you. If you hear a hollow sound, this indicates the plaster has separated from the underlying structure, such as the brick or concrete wall. Left untreated, blown plaster can lead to cracks and further damage.

In some cases, blown plaster can be removed with minimal effort. However, I always recommend stripping back to the brickwork and installing plasterboard rather than skimming over loose plaster. This ensures a more stable and longer-lasting finish. If you suspect blown plaster in your home, don’t hesitate to get in touch for a professional assessment and advice.