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How to Repair Ceiling Cracks in Plaster Ceiling?

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    Plaster ceilings often experience the frequent and frustrating problem of cracking. Several variables, including structural problems, temperature variations, moisture, and building settlement, can lead to these fissures.

    Not only can cracks in your ceiling ruin its aesthetic value, but they also make you worry about its structural integrity.

    Repairing these gaps and restoring the ceiling's structural integrity is a common problem, but only some people know how to do it properly.

    The good news is that ceiling cracks in plaster can be repaired in several efficient ways. Finding out how bad it is and what caused the cracks is the first order of business.

    This analysis lets you learn if the cracks are only ornamental or indicate more serious structural problems. After determining the best course of action, you can begin fixing the problem.

    A straightforward method of patching can be utilised to repair smaller fractures.

    Plaster patching material is then used to repair the cracks, which must be smoothed out for a seamless appearance.

    However, if the crack is broad or severe, plaster tape or mesh may need to be applied over the fracture before the patching material is applied. This serves to strengthen the area and stop the fracture from spreading further.

    Plaster ceiling crack repair takes careful attention to detail and a steady hand. If you want your effects to last, use high-quality materials and follow proper procedures.

    Consult a professional plasterer for advice and assistance if you need clarification on how to proceed with the repair or need essential skills.

    If your plaster ceiling has cracks and you want a detailed explanation of how to fix them, you've found the ideal spot. Learn how to identify and fix various cracks by reading this article's detailed instructions.

    We can help with everything from minor, aesthetic damage to major structural failures. If you follow our instructions, your plaster ceiling will look as good as new.

    What Causes Cracks In Your Ceiling?

    It's not uncommon for ceilings to develop cracks in older homes and structures.

    They ruin the overall look of the inside and make you wonder about the building's safety.

    To fix the underlying problems and prevent further cracking, it is essential to understand the causes of ceiling cracks. This article will discuss why your ceiling is cracking and what you can do on it.


    Settlement is a common culprit in the occurrence of cracks in the ceiling. When the soil beneath the building compresses or changes, it can lead to settlement when the building sinks slightly.

    This shifting can strain the ceiling materials, leading to fissures. Several reasons can lead to settlement, including groundwater level fluctuations, incorrect construction-site compaction, and the soil's natural consolidation.

    Structural Issues

    Structural issues can cause ceiling cracks within a building.

    For example, ceiling stress concentrations can result from poorly distributed building loads transferred from poorly planned or constructed beams, columns, or load-bearing walls. Over time, cracks might form at these stress sites.

    Water and Moisture Damage

    Water is the number one enemy of building materials, and if it finds its way through the ceiling, it will eventually cause the structure to weaken and crack. Leaks in the plumbing or condensation, roof, or high humidity can all lead to costly water damage.

    The components in the ceiling degrade, weaken, and crack when water seeps into them.

    Temperature Changes

    Materials may swell or shrink as temperatures rise and fall. Ceilings located in unconditioned spaces or close to exterior walls are especially susceptible to cracking due to extreme temperature changes.

    For instance, warm air from the heater in the winter can cause the ceiling materials to swell. In addition, due to contraction brought on by cooling, cracks may appear in materials.

    Poor Installation Or Workmanship

    Poor construction practices, including insufficient joint or seam preparation or low-quality materials, can cause ceiling cracks.

    In addition, there could be structural weakness and eventual fracture if the ceiling materials weren't correctly attached or if there wasn't enough support during installation.

    Movement And Vibrations

    Internal building vibrations and movement can also bring on ceiling cracks. Construction work, large machinery, or even heavy foot traffic can all cause vibrations in a building's foundation.

    The ceiling may eventually crack due to the constant vibrations and movement.

    Natural Disasters

    Earthquakes can cause significant damage to structures, including cracks in ceilings, especially in seismically active locations.

    This is because earthquakes cause significant stress on the structure, which might cause it to fracture and develop cracks as a result of the ground shaking. Ceiling fractures can also be caused by other natural disasters, such as hurricanes or particularly powerful winds.

    Cracks in the ceiling can indicate a serious problem, so it's important to evaluate the damage before taking any action.

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    Cracks that are only skin deep or barely noticeable over time may be purely cosmetic and easy to mend.

    Large or growing fissures, however, necessitate an expert inspection to rule out structural damage.

    Signs To Look Out For

    The first step is to determine if the issue is superficial or deeper. Precursors of cracking may include:

    1. Loud cracking noises
    2. Discolouration
    3. Sagging of the plasterboard
    4. The appearance of small blisters
    5. Plasterboard sheeting falling, pulling or dropping 

    If any of these occurs, contact a professional right once so the damage can be repaired rather than replaced. Straight, fine cracks aren't usually caused for concern, although they can point to improper joint taping. To cover this up, reattach the tape with a light coat of drywall compound.

    Common Causes And Remedies For Ceiling Cracks

    The most typical types of ceiling cracks and potential causes and solutions are discussed here.

    Discolouration and a Huge Crack

    This may indicate the presence of excess moisture. This can happen if water from a leak in the ceiling seeps between the drywall panels and the joint adhesive loosens.

    To prevent more water damage, the leak must be found, humidity eliminated, and the ceiling fixed as quickly as feasible. After that, you can remove the old tape and re-tape the joint to the drywall.

    Even if you're handy with a patching kit, it's best to call the pros to find and fix the leak's source. This is true if the ceiling has a special finish or kind, such as a textured plaster ceiling.

    Horizontal Wall-Ceiling Cracks

    The trusses in the roof frequently cause these problems as they rise due to temperature changes. As a result, a separation between the ceiling and the wall develops due to the ceiling drywall being pulled upward.

    Another way to fix this is to get professionals to cut holes in the drywall and reattach the fittings to the trusses with clips or blocks.

    A Thin Straight Crack

    A narrow, straight fracture, on the other hand, can be the result of an improperly taped joint. The tape might not have stuck to the seam as well as it should have since not enough drywall mud was used during the taping operation. Where the tape has come undone, a straight fissure forms.

    If you place some drywall cement beneath the loose tape and reattach it to the drywall, the problem will be solved. A little touch-up paint around the frayed area will make the crack invisible in no time.

    Fine Cracks That Run In All Directions

    These result from fissures in the ceiling paste used to give the desired textured appearance. The compound's shrinking as it dries leads to fissures. Similarly, this can be remedied by simply painting drywall compound over the affected areas.

    What Are The Benefits Of Plastering Ceiling Cracks?

    Filling up ceiling cracks with plaster has many advantages:

    Enhanced Aesthetics

    Plastering successfully conceals imperfections, making for a more aesthetically pleasing ceiling.

    Structural Stability

    If you notice cracks in your ceiling, it may indicate serious structural problems. Plastering over the holes will strengthen the ceiling and make it more resistant to subsequent damage.

    Improved Insulation

    Plastering helps insulate a ceiling by sealing gaps and fractures. This could improve the room's climate control and energy efficiency.

    Noise Reduction

    A more peaceful atmosphere can be achieved by filling the ceiling's crevices with plaster.

    Increased Property Value

    A well-maintained ceiling without cracks will appeal to purchasers and tenants. Plastering can fix cosmetic difficulties and even certain structural problems, but it may only be a long-term fix if the root cause of the fissures is addressed.

    Why Hire Professional Ceiling Crack Repair?

    It would be best if you will not attempt to fix a break in your ceiling alone for several reasons. First, ceiling cracks detract from the room's aesthetics and may also be a symptom of more serious structural problems.

    It's tempting to try fixing anything yourself, but hiring a professional ensures a safe and successful outcome for several reasons. In this piece, we'll discuss why it's best to have a pro fix any cracks in your ceiling.

    Experience and Expertise

    Technicians who fix ceiling cracks have the training and knowledge to figure out how bad the damage is and what the best way to fix it is. They have the expertise to determine the source of the damage, be it water seepage, foundation issues, or structural problems.

    Because of their extensive experience, they can offer solutions beyond simply patching up surface damage.

    Quality Repair Work

    Ceiling crack repairs require specialized tools, equipment, and supplies, all readily available to professionals. That way, you know the fixes will be done right and to a high standard.

    In addition, they are well-versed in the appropriate methods and materials for mending a variety of cracks, from the tiniest hairline to the largest structural break. If you hire experts, they can fix your ceiling such that it seems as if it is always there.

    Cost and Time Efficiency

    Do-it-yourself fixes can save money in the short term, but they usually end up causing more damage and costing more to fix in the long run. Hiring a professional to solve the problem quickly and efficiently can save you money and time .

    They can find the source of the fractures promptly, avoiding further damage and the cost of fixing it twice. In addition, experts can assist in keeping repair prices down because they have access to wholesale suppliers and cheaper supplies.


    Fixing a break in a ceiling may require you to use scaffolding or a ladder and work at a precarious height. For those without adequate training or expertise, this presents a significant threat of harm.

    Experts know how to work securely at heights and have the gear they need. You may protect your love ones and yourself from harm by leaving the work to experts.

    Warranty and Insurance

    Reliable, experienced repair shops frequently offer guarantees through warranties or insurance policies. This guarantees that the expense of further repairs, such as the re-emergence of cracks or the deterioration of the repaired area, will be covered.

    Another thing, you may rest easy knowing that the repair will hold up because professionals often provide warranties on both their labour and the materials they employ.

    Value Enhancement

    A roof that has been properly maintained and is in good shape can increase the value of your home. If you're renting or selling your house, fix any ceiling cracks promptly. A property's desirability grows with professional upkeep, making it more likely to sell or rent for more.


    Plaster ceilings often experience cracking due to structural problems, temperature variations, moisture, and building settlement. To repair these fissures, it is important to determine the best course of action and use high-quality materials and follow proper procedures.

    To identify and fix various cracks, it is important to understand the causes of cracking and what can be done on it.

    This article will discuss why your ceiling is cracking and what you can do on it. Settlement, structural issues, water and moisture damage, temperature changes, poor installation or workmanship, movement and vibrations, and natural disasters are all potential causes of cracks in ceilings.

    Settlement is caused by groundwater level fluctuations, incorrect construction-site compaction, and the soil's natural consolidation.

    Structural issues include poorly distributed building loads, water and moisture damage, temperature changes, poor installation or workmanship, movement and vibrations, and natural disasters.

    It is important to evaluate the damage before taking any action. The most important details in this text are the signs of cracking in a ceiling.

    These include loud cracking noises, discolouration, sagging of the plasterboard, the appearance of small blisters, and falling, pulling or dropping plasterboard sheeting.

    Common causes and remedies for ceiling cracks include discolouration and a huge crack, horizontal wall-ceiling cracks, and a thin straight crack. To fix these problems, it is best to call a professional to find and fix the leak's source.

    A touch-up paint around the frayed area will make the crack invisible. Ceiling cracks are caused by fissures in the ceiling paste used to give the desired textured appearance.

    Plastering ceiling cracks has many advantages, such as enhanced aesthetics, structural stability, improved insulation, noise reduction, and increased property value.

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    However, it is best to hire a professional for several reasons: experience and expertise, quality repair work, cost and time efficiency.

    Professionals have the training and knowledge to determine the source of the damage and offer solutions beyond simply patching up surface damage.

    They also have the expertise to determine the source of the damage, be it water seepage, foundation issues, or structural problems. Hiring a professional to fix ceiling cracks quickly and efficiently can save money and time, as they can find the source of the fractures promptly and keep repair prices low.

    They also have access to wholesale suppliers and cheaper supplies, and have the necessary training and expertise to work securely at a precarious height.

    Additionally, they offer warranties and insurance policies to ensure that further repairs are covered and that the repair will hold up. Finally, professional upkeep can increase the value of a home, making it more likely to sell or rent for more.

    Content Summary

    • Plaster ceilings often experience the problem of cracking caused by various factors.
    • Understanding the severity and cause of the cracks is crucial before repairing them.
    • Smaller cracks can be patched using plaster patching material.
    • Broad or severe cracks may require the use of plaster tape or mesh for reinforcement.
    • Proper materials and procedures should be followed for a long-lasting repair.
    • Consulting a professional plasterer is recommended for guidance and assistance.
    • This article provides detailed instructions on identifying and fixing different types of cracks.
    • Settlement in the building's foundation can lead to ceiling cracks.
    • Structural issues such as stress concentrations can cause cracks over time.
    • Water damage from leaks or high humidity weakens the ceiling and leads to cracking.
    • Temperature changes can cause ceilings to swell or contract, resulting in cracks.
    • Poor installation or workmanship can cause ceiling cracks.
    • Building vibrations and movement can contribute to the development of cracks.
    • Natural disasters like earthquakes can cause significant structural damage and cracks.
    • Cracks should be evaluated to determine if they indicate a serious problem.
    • Signs to look out for include loud cracking noises, discoloration, and sagging.
    • Professional help should be sought for large or growing fissures.
    • Discoloration and a huge crack may indicate excess moisture, requiring the source of the leak to be fixed.
    • Horizontal wall-ceiling cracks can be caused by temperature changes and may require professional intervention.
    • Thin straight cracks are often the result of improperly taped joints and can be fixed with drywall cement.
    • Fine cracks in all directions can be due to shrinking of the ceiling paste and can be remedied with drywall compound.
    • Plastering ceiling cracks enhances the aesthetics and conceals imperfections.
    • Plastering strengthens the ceiling's structure and improves insulation and noise reduction.
    • Well-maintained ceilings without cracks can increase property value.
    • Hiring a professional for ceiling crack repair ensures expertise and proper assessment of the damage.
    • Professionals have the necessary tools and supplies for quality repairs.
    • Hiring experts saves time and money in the long run and avoids further damage.
    • Professionals prioritize safety and have the required equipment to work at heights.
    • Reliable repair shops often provide warranties for their work, ensuring coverage for future repairs.
    • Properly maintained ceilings can enhance the value of a property when selling or renting.

    FAQs About Plaster Ceilings

    Certainly! Plaster ceilings commonly experience cracking as a natural consequence of various factors. Plaster is a brittle material that is prone to developing cracks over time. This phenomenon can be attributed to several causes, including temperature fluctuations, settling of the building, or structural movements.

    Temperature changes, such as variations in heat and humidity, can result in the expansion and contraction of materials within the building. Plaster, being sensitive to these alterations, can undergo stress and strain, eventually leading to the formation of cracks.

    Additionally, as a building settles over the years, the foundation may shift or settle unevenly. This shifting can create tension and pressure on the plaster ceiling, causing it to crack. Similarly, structural movements due to external forces like earthquakes or vibrations from nearby construction can also contribute to the development of cracks in plaster ceilings.

    It is worth noting that not all cracks in plaster ceilings are cause for immediate concern. Hairline cracks, for instance, are relatively common and often considered a normal part of the aging process. However, larger or more significant cracks may indicate underlying issues that require attention.

    Regular inspection and maintenance of plaster ceilings are essential to ensure their longevity and structural integrity. Promptly addressing cracks and signs of damage can help prevent further deterioration and potential hazards. Consulting with a professional contractor or plaster specialist can provide valuable guidance on the appropriate repair or restoration techniques needed to address the specific cracking issues in your plaster ceiling.

    Cracks of less than 5 millimetres wide are usually a crack in the plaster, rather than the wall itself, and can be filled and decorated over. Cracks between 5mm and 15mm wide are more likely to be serious and may need professional repairs. Any crack bigger than 25mm wide should definitely be examined by a professional.

    Yes, ceiling cracks can typically be repaired. The method and complexity of the repair will depend on the severity and extent of the cracks. Here are a few common approaches to repairing ceiling cracks:

    1. Patching: For smaller cracks, a simple patching technique can be employed. This involves filling the crack with a suitable patching compound or joint compound, smoothing it out, and allowing it to dry. Once dry, the patched area can be sanded and painted to match the surrounding ceiling.
    2. Tape and joint compound: For wider or more extensive cracks, a more robust repair technique may be necessary. This involves applying self-adhesive fiberglass or paper tape over the crack to provide reinforcement. A layer of joint compound is then applied over the tape, feathering it out to blend with the surrounding ceiling. Multiple layers may be required, with sanding and painting between each layer, to achieve a seamless finish.
    3. Ceiling texture: In some cases, matching the texture of the repaired area with the existing ceiling texture can be a challenge. However, various texture techniques, such as spraying, stippling, or using a textured roller, can help create a cohesive look.

    It's important to note that while these methods can address the cosmetic aspect of ceiling cracks, it's essential to identify and address the underlying cause of the cracks. If the cracks are a result of structural issues or ongoing movement, it's advisable to consult a professional contractor or structural engineer to assess the situation and recommend appropriate repairs.

    Polycell Crack-Free Ceilings is a great way to restore cracked ceilings to a smooth 'good as new' finish. Its flexible paint formulation uses Polyfilla technology to not only cover cracks but prevent them from reappearing. A smooth and flexible paint that permanently covers cracks and stains.

    PVA glue – We use plain old Elmer's school glue. Plastic syringes or a spray bottle – Syringes work best. Construction adhesive – Our favorite brand is Loctite Power Grab. The formula works for many applications, including plaster.

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