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How Long Does Plaster Take To Dry? A Guide For Perfect Finishes

Writer: Adrián KériAdrián Kéri

Plastering is an essential step in achieving smooth, durable walls ready for painting or decorating. However, knowing how long plaster takes to dry is crucial to avoid issues like cracking, peeling, or poor adhesion when applying paint or wallpaper. Drying times can vary depending on the type of plaster, room conditions, and thickness of the application. In this guide, we’ll explore plaster drying times, tips for speeding up the process, and best practices for decorating after plastering to ensure a perfect finish.


Worker using a power sander with built-in light to smooth and dry plaster on an interior wall during renovation.

How Long Does Plaster Take To Dry?


On average, plaster takes between three to seven days to dry, though the exact time depends on the type of plaster used. Skim coat plaster, which is applied in a thin layer, usually dries within two to three days. In contrast, bonding or undercoat plaster can take four to seven days due to its thicker application. If multiple layers are used, as with newly plastered walls, it may take up to two weeks for the plaster to fully dry. The drying time of plaster varies depending on the type used, so selecting the right plaster for your home is essential. Patience is key when it comes to plaster drying. Rushing the process by painting or decorating too soon can lead to trapped moisture, which may cause peeling, bubbling, or uneven finishes. Ensuring the plaster is completely dry before proceeding is crucial for a long-lasting, professional result.


How To Tell If Plaster Is Dry?


A simple way to check if the plaster is dry is by observing its colour and texture. Fresh plaster is usually darker and gradually lightens to a uniform pale pink or beige as it dries. The surface should feel dry to the touch, with no cool or damp spots. Another indicator is moisture levels in the room. If condensation forms when your hand is close to the wall, the plaster is still holding moisture and needs more time to dry. Once your plaster is completely dry, choosing the right type of paint is essential to ensure proper adhesion and durability.


Tips For Drying Plaster Faster


While plaster requires time to set properly, a few steps can help speed up the drying process. Good ventilation is one of the best ways to allow moisture to escape naturally. Keeping windows and doors open encourages airflow, while using fans can also improve circulation. If natural ventilation is limited, a dehumidifier can help absorb excess moisture from the air. Another effective method is maintaining a warm room temperature. However, it's important to avoid placing direct heat sources, such as radiators or heaters, too close to the walls, as this can cause plaster to dry too quickly and crack. A steady, moderate temperature will help ensure even drying without damaging the plaster’s surface.


Close-up of a soft concrete texture with a smooth, light gray surface, ideal for use in plastering or interior design visuals

Decorating After Plastering


Once the plaster is completely dry, proper wall preparation is essential before painting or wallpapering. A mist coat, which is a diluted layer of water-based paint, helps seal the plaster and creates a good base for the final paint layers. This ensures that the paint adheres properly and prevents it from soaking into the plaster unevenly. Choosing high-quality, breathable paint is also important for freshly plastered walls. Two coats of paint are usually recommended for a smooth and polished finish. If applying wallpaper, it’s best to avoid heavy or non-breathable materials immediately after plastering, as these can trap moisture and lead to issues over time. Sanding any rough areas before decorating will also help achieve a flawless look. For a professional touch, consulting a skilled painter can make a big difference in achieving seamless, long-lasting results Adam Painters and Decorators that specializes in expert painting and decorating services, ensuring that newly plastered walls are treated with care and finished to perfection.


At Adam Painters and Decorators we understand the importance of proper wall preparation for a professional finish. Our team provides high-quality painting and decorating services, ensuring that your plastered walls are ready for long-lasting, stunning results. From choosing the right paint to applying the perfect mist coat, we ensure that every step is completed with precision and care.Visit our website at Adam Painters and Decorators to learn more about our expert painting solutions and get professional guidance for your home improvement projects.


Conclusion


Knowing how long plaster takes to dry is essential for achieving smooth, long-lasting walls ready for painting or decorating. While drying times vary based on plaster type, thickness, and room conditions, it’s important to be patient and ensure the plaster is fully dry before applying any finishes. Rushing the process can lead to cracking, peeling, or uneven surfaces, affecting the final result.By following proper drying techniques, improving ventilation, and using the right wall preparation methods, you can create a perfect base for painting or wallpapering.


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