Plasterer applying a finish coating to a wall, adhesive base coat is typically used to make plaster to establish a finished look to a space. Selective focus.

Many property owners and potential buyers contemplating the acquisition of a building with external rendering may be curious about the lifespan of such a finish.

This question is complex, and the answer is not straightforward. The longevity of an exterior rendering system depends on various factors.

A standard render typically has a useful life of around 30 years, while external renders, like many other finishing materials, also have a finite shelf life.

For instance, certain contemporary acrylic- or plastic-based renders are expected to endure for 20 to 40 years. In many cases, a property may not necessitate renovation for nearly 50 years.

Nevertheless, let’s examine the factors that contribute to understanding how long external rendering house lasts.

Factors Influencing Render Longevity

Type of Render

The type of rendering house material used is a critical factor in the longevity of the finish. Modern acrylic and silicone render often has a longer lifespan and greater flexibility, reducing the likelihood of cracks. On the other hand, traditional cement renders may be more prone to cracking and require earlier replacement.

The flexibility and permeability of the render material influence its ability to accommodate structural movements without compromising its integrity. Contemporary renders with adhesive base coats and topcoats made of mineral, silicon, or acrylic are more flexible and less likely to crack, providing durability over time.

Quality of Workmanship

The skill and expertise of the professionals installing the render significantly impact its age. Proper preparation of the substrate, adherence to manufacturer guidelines, and precise application are crucial for the render’s long-term performance. Well-installed render by rendering specialists is less prone to issues such as cracking, peeling, or delamination.

The quality of surface preparation before rendering house is crucial. A clean and properly prepared substrate ensures optimal adhesion, preventing issues such as peeling or detachment. Neglecting this step can lead to premature failure of the render system.

Prevailing Conditions and Weathering

The environment to which the render is exposed plays a vital role. Excessive exposure to harsh weather conditions, including intense sunlight, heavy rainfall, or freezing temperatures, can accelerate wear and tear. Lime and silicone render often performs well in adverse weather, providing enhanced protection.

Ultraviolet (UV) radiation from the sun can impact the color and structural integrity of rendering materials. Renders with UV-resistant properties are designed to withstand prolonged sun exposure without significant fading or degradation.

Regular Maintenance

Regular maintenance and prompt repairs contribute to the prolonged life of the render. Addressing small issues, such as cracks or chips, in a timely manner prevents more extensive damage and extends the overall lifespan of the rendering system.

Applying protective coatings and paints as recommended by the manufacturer can enhance the resilience of the render. Regular painting, typically every 8 to 10 years, helps maintain the protective qualities of the rendering system.


The age of house render is influenced by a combination of factors, and understanding these elements is crucial for ensuring its long-term performance. Homeowners and builders should consider the type of render material, the quality of rendering specialists workmanship during installation, environmental exposure, and the importance of regular maintenance. By addressing these factors, one can contribute to the durability and aesthetic appeal of the exterior render, ensuring it stands the test of time.