Cracks in plaster walls and ceilings can be a significant cause of frustration for homeowners. Plaster cracks can occur for various reasons, from small hairline cracks to large fissures that span the entire surface. This article will explore why plaster cracks and how to address the problem. We’ll discuss the causes of plaster cracking, methods to prevent it from occurring and examine ways of repairing cracked plaster.

As a team of plastering professionals, we at Plymouth Plastering Pros understand the common issues homeowners face with their plastered walls. One of the most frequent problems is cracking. Suppose you notice any signs of cracking on your walls or ceilings. In that case, seeking professional help immediately before further damage occurs is essential. Our team has years of experience dealing with all wall and ceiling repairs. It uses only top-quality materials and techniques for long-lasting results. Contact us today for a free consultation!

Causes of Plaster Cracks

Plaster cracks can be a common issue in many homes, and there are several reasons why this may occur. One of the most common causes of plaster cracking is structural movement in the building. Structural movement could result from natural settling or more significant structural issues that require immediate attention. Additionally, temperature fluctuations can cause plaster to expand and contract, leading to cracked surfaces.

Another possible cause of plaster cracking is poor application or inadequate preparation before applying the plaster. For example, the surface needs to be adequately cleaned and prepared before applying the plaster. In that case, it may not adhere correctly or have varying drying times, resulting in uneven surfaces and visible cracks. Similarly, if too much water is used when mixing plaster or applied too thickly on walls, it can also cause cracks.

Effects of Plaster Cracks

The effects of plaster cracks are numerous and can range from cosmetic issues to structural damage. Sometimes, small hairline cracks may not pose a significant problem and can easily be repaired with filler. However, larger cracks may indicate underlying issues that require more attention.

Cracks in plaster can also provide entry points for moisture and pests such as termites that can cause further damage over time. Additionally, if left unaddressed, cracks in plaster walls or ceilings could eventually lead to structural instability posing a potential safety hazard for occupants of the building. Therefore, addressing any cracks in your plaster as soon as you notice them is essential to prevent further harm and ensure the longevity of your home or building.

Prevention of Plaster Cracks

There are several measures that homeowners can take to prevent plaster cracks from occurring in their homes. One such action is ensuring that all walls and ceilings are properly insulated, as this will reduce the impact of temperature changes on your walls. Additionally, homeowners should ensure they use high-quality plastering materials for repairs or construction work.

Another way of preventing plaster cracks is by ensuring that all plumbing and electrical work has been correctly installed, as leaks or vibrations from pipes and faulty wiring can cause structural movements leading to cracking. Finally, regular maintenance checks should be carried out to detect any signs of cracking early on before they become significant issues requiring extensive repair work.

Repairing Plaster Cracks

To repair plaster cracks, first, clean out any debris or loose plaster from the crack using a scraper or putty knife. Next, apply a coat of joint compound or spackle over the crack with a putty knife in layers until it’s flush with the surrounding area. Finally, use sandpaper to smooth down any excess material as necessary.

In some cases where large sections of plaster have cracked or detached from lath strips behind it, you may need to hire a professional contractor who specialises in repairing historic homes and buildings to ensure that repairs are done correctly without damaging other areas your home or property.

Re-Plastering Damaged Walls

While there is no single solution for repairing damaged walls, plastering is one of the most effective methods. Re-plastering a wall involves removing and replacing the old plaster with new material that matches the existing texture and finish. Before beginning the repair process, it’s essential to determine what caused the damage in the first place to prevent further cracking from occurring in the future.

Re-plastering damaged walls requires careful attention to detail and knowledge about why plaster cracks in the first place. Whether dealing with minor cosmetic issues or more severe structural damage, taking prompt action can help prevent further deterioration and keep your home looking beautiful for years. So if you notice any signs of wear on your walls or ceilings, don’t hesitate to contact a professional specialising in plaster repair services!


It is essential to minimise damage caused by plaster cracks to maintain the structural integrity of your building. One way to do this is by identifying the root cause of the crack and addressing it promptly. Ignoring a tiny crack can lead to more significant problems in the future that will be more costly and time-consuming to fix.

Taking preventative measures such as addressing issues promptly and performing regular inspections will minimise damage and increase the longevity of your building’s structure. In addition, being proactive can save money on repairs and ensure the safety of those who inhabit or visit your property.

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