Stucco is a versatile and popular building material that has a long history of use.
Along with adding aesthetic appeal to homes and commercial buildings, stucco also helps to increase structural integrity and durability. The unique texture and appearance of stucco make the material a preferred choice for the exterior of all types of buildings.
However, like any exterior surface, stucco requires regular maintenance to ensure its longevity.
In this article, we discuss everything you need to know about stucco as an exterior construction material, including how to properly maintain it. To help you understand the purpose and benefits of stucco, we dive into the various facets of the material and why it is so popular.
Keep reading to find out how often to repaint stucco on the exterior of a home or building!
What is Stucco?
Stucco is a cement-based mixture that is applied to exterior walls and other surfaces to create a textured and often decorative finish. Made from base ingredients like cement, sand, and water, stucco can also include additives like lime and acrylics to enhance its overall quality and finish.
Traditional stucco was not always crafted from a cement base but most modern stucco sidings are made with cement to boost the overall durability and longevity of the material.
In terms of application, the stucco mixture is troweled onto surfaces in multiple layers. As it dries, stucco hardens into a solid, durable, and aesthetically pleasing surface. The final texture of stucco can be varied, with the main types of stucco textures including:
- Smooth: Smooth stucco is one of the most basic and common textures. It provides a clean and sleek appearance without any visible texture patterns. It’s often used for modern and contemporary designs, as well as on buildings where a more refined and polished look is desired. However, most stucco finishings are never fully smooth and still include small bumps, lines, and other minor textures that are typical of the stucco material.
- Rough: Rough stucco, also known as heavy or troweled stucco, features a more rugged and uneven surface. This texture is purposefully achieved by applying the stucco mixture in thicker coats and then using a trowel or other tools to create a coarse texture. Rough stucco is often chosen for a more rustic or traditional appearance. The rough application of stucco also more closely resembles traditional stucco seen in Greek, Roman, and Spanish cultures.
- Pebbled: Pebbled stucco — also known as pebbled-dash stucco — offers the most heavily textured version of the material. This texture incorporates small pebbles or aggregates into the stucco mix, resulting in a surface that resembles the texture of small pebbles or gravel. It adds visual interest and can be used to create a more textured and natural look. Pebbled stucco can also include small shells as well, giving the final texture a beachy finish.
Stucco can be manipulated and altered to achieve various textures and can be further enhanced through the use of pigments and paints. As we will discuss, the final paint coatings covering the stucco can require occasional maintenance and retouching to keep it looking great and visually appealing.
What is Stucco Used For?
Stucco is applied in a wide range of architectural styles and structures.
It has been utilized across different cultures and historical periods, showcasing its adaptability and enduring appeal. Stucco is commonly used for:
- Exterior Walls: Stucco is primarily utilized as an exterior finish for residential and commercial buildings alike. It provides protection against the elements, adds insulation, and enhances the visual appeal of the structure. Additionally, stucco gives the exterior of a home or commercial building a more unique appearance that can add value to a piece of property.
- Decorative Elements: Stucco can be sculpted into various shapes and patterns both indoors and on exterior walls, making it ideal for creating decorative elements like cornices, moldings, and medallions. These decorative elements add a visual flare that is reminiscent of more traditional architectural styles from the European cultures that stucco originates from.
- Indoor Surfaces: While stucco is more commonly associated with exteriors, it can also be used indoors to create unique textured walls and ceilings. The use of cement in stucco plays a part in why it is not as commonly used for indoor surfaces, due to stucco taking considerably longer to dry indoors than other materials. On average, stucco can take up to 90 days to fully dry indoors.
In addition to the uses of stucco discussed above, stucco is also commonly used in historical building restoration projects. Stucco is popular for this purpose thanks to its ability to replicate traditional and historical aesthetics, as well as helping to maintain the structural integrity of older buildings.
Why Use Stucco?
Aside from its aesthetic appeal, stucco also offers a variety of advantages that further increase its popularity. As mentioned, stucco can help to improve the structural integrity of a building — but how?
Here are five benefits of stucco to consider:
- Durability: Stucco is a durable material that can withstand various weather conditions, including rain, snow, and harsh sunlight. Due to stucco being applied in multiple layers — especially on exterior surfaces — it creates a thick and sturdy finish that offers many structural advantages.
- Versatility: Stucco can be applied to various surfaces and can be shaped and textured to suit different architectural styles. From traditional and historical aesthetics to a more modern and sleek appearance, stucco is highly versatile as a wall coating and finishing.
- Fire Resistance: Stucco is inherently fire-resistant due to its composition, providing an added layer of safety to buildings. While stucco alone is not enough to prevent fires in residential or commercial buildings, it can add another layer of protection in the event of external fires.
- Low Maintenance: Although stucco does require maintenance, its longevity and resistance to damage make it a relatively low-maintenance option compared to other materials. However, it is vital to keep your stucco looking clean and fresh with a new coat of paint every few years.
- Energy Efficiency: The thickness and durability of stucco contribute insulation properties to commercial and residential buildings. Stucco can boost overall energy efficiency by helping to regulate indoor temperatures and keep out heat in hotter climates.
How Often Should You Paint Stucco: 3 Key Factors to Consider
Painting stucco not only enhances its appearance but also protects it from the elements, further preventing moisture infiltration and extending the material’s long-term lifespan.
However, the frequency of re-painting needed for stucco depends on several factors:
- Climate: The climate of the region you live in plays a significant role in determining how often you should re-paint stucco. In areas with harsher weather conditions, such as extreme heat, cold, or frequent rainfall, stucco may require more frequent painting.
- Quality of Previous Paint Job: A well-executed paint job using high-quality materials can last longer than a subpar one. If the previous paint job was done using premium products and proper techniques, you might not need to re-paint as often.
- Signs of Wear and Damage: Regularly inspect your stucco for signs of wear and damage. If you notice cracks, efflorescence, peeling paint, or mold growth, these are all indications that your stucco needs attention and possibly a new coat of paint.
The Signs You Need to Repaint Stucco
In general, stucco should be re-painted every five to ten years.
To extend the longevity of stucco, it is crucial to recognize the signs of worn-down paint to know when maintenance and re-painting are needed.
Here are four signs to watch out for that indicate stucco needs a new coat of paint:
- Hairline Cracks: Hairline cracks are a common occurrence in stucco due to natural settling and temperature changes. However, as these cracks widen further, this can be a sign that your stucco needs maintenance. Repainting can help seal these cracks and prevent water infiltration.
- Efflorescence: Efflorescence appears as white, powdery deposits on the surface of stucco and indicates salt deposits coming to the surface. This can be a sign of moisture issues that re-painting can help to resolve. Using high-quality, breathable paint is best for preventing this issue.
- Peeling: If your existing paint is peeling or flaking, this is a clear sign that the adhesion of the paint has been compromised. Re-painting will not only improve the appearance but also protect the stucco from further damage and peeling.
- Mold: Stucco is susceptible to mold growth, especially in areas with high humidity. Mold not only affects the appearance but can also deteriorate the stucco over time. Repainting with mold-resistant paint can help prevent this issue.
What Type of Exterior Paint Finish is Best for Stucco?
Choosing the right type of paint finish is crucial for stucco surfaces.
Stucco has a textured surface and the finish you select can influence both the appearance and durability of the paint job. Here are some common paint finishes for stucco:
- Flat Finish: Flat paints have a non-reflective appearance and can help conceal minor surface imperfections. These paints are suitable for stucco surfaces with minor flaws.
- Eggshell Finish: Eggshell finishes have a slight sheen and are more washable than flat paints. This type of finish can strike a balance between matte and glossy, as well as boost durability.
- Satin Finish: Satin paints have a higher sheen and provide even better washability. They are a good choice for high-traffic areas or parts of the stucco that are more exposed to the elements.
- Acrylic Finish: Acrylic-based paints are known for their flexibility and breathability, which is important for stucco surfaces. These paints allow for better overall moisture control.
Stucco is a functional building material and a canvas for creative expression. The durability, versatility, and timeless appeal of stucco ensure its continued popularity across architectural styles and cultures.
To maintain the beauty and longevity of stucco, keeping an eye on the quality of its paint finishing is key.
The frequency of re-painting depends on several different factors including environmental climate, the quality of previous paint jobs, and signs of wear and tear. These factors indicate the need for repainting to prevent further damage and enhance the curb appeal of your property.
Keep a vigilant eye on your stucco for signs of cracking, efflorescence, paint peeling, and mold growth. If you notice any changes to the quality of your stucco, it may be time for a fresh coat of paint!