Painting a Rendered House: Tips and Tricks for a Flawless Finish

Painting a rendered house can be a daunting task, but with the right tools and knowledge, it can be a rewarding experience. Rendered exterior walls are popular, as they are durable with exceptional curb appeal. However, in time the surface can fade making a house look tired and worn – then it’s time for a fresh coat of paint!

Before you start the painting job, check the walls are clean and free from dirt. A pressure washer or scrubbing with a stiff brush and a solution of water and detergent also works to clean your home’s exterior. Fill cracks or holes with a suitable exterior grade render filler. Leave this to dry completely.

The right paint gives a long-lasting and professional finish. Choose a paint that is breathable, as this prevents moisture from becoming trapped in the walls and causing damage over time. With the right preparation and paint, rendered walls can look good as new in no time.

Understanding Rendered Houses

Rendered houses are homes with a coating applied to their exterior walls. The render may be made from cement, lime, acrylic or a combination of these materials. Rendering protects the walls from weather damage, erosion, and cracking. It improves the appearance of a house and increases its value.

Cement render is durable and can withstand harsh weather conditions. Lime render is more flexible and can accommodate slight movement in a building’s structure. The acrylic render is easy to apply and can be tinted to any colour.

Rendering can unify the home’s appearance. If an extension is added rendering the entire house helps to create a cohesive look and architectural interest. Mixing rendered surfaces with other textures creates a visually appealing exterior.

Preparation Before Painting Rendered Walls

Before painting a rendered house, prepare the walls properly. This will allow the paint to adhere well and last. Here are some steps when preparing to render walls:

Clean the Walls

Clean the walls thoroughly. This removes dirt, dust, or debris that may have built up on cement-rendered walls over time. Use a pressure washer or a hose with a high-pressure nozzle. Remove any stains or marks using a suitable cleaning solution.

Repair Any Damage

Repair any damage to the edges of the walls, cracks or holes by using suitable filler. Be sure the walls are smooth and even to help the paint adhere properly.

Allow Sufficient Drying Time

Next, allow enough time for the walls to dry completely. This ensures the paint adheres properly and will not peel or flake off over time. The drying time will depend on the weather conditions and the type of paint rendered.

Use the Right Tools and Materials

Use the right tools and materials. You will need a long-pile roller or brush, a paint tray and masonry paint. Follow the manufacturer’s instructions carefully. Protect surrounding areas with masking tape, plastic or cloth drop sheets.

Choosing the Right Paint

The right paint gives a long-lasting and visually appealing finish. Consider the type of render, the climate, and the desired finish.

Type of Render

The most common render types are cement, acrylic, and silicone. Acrylic render is more flexible and water-resistant than cement render. It has low breathability, which can lead to damp issues internally. Choose a paint compatible with the type of render on the house for optimal adhesion and durability.

Climate

In areas with high humidity or frequent rainfall, use paint that is water-resistant and has antifungal properties to prevent mould. In areas with high UV exposure, a paint that is UV-resistant prevents fading and discolouration.

Desired Finish

The most common finishes for rendered houses are matte, satin, and gloss. Matte finishes are ideal for hiding imperfections and creating smooth, even surfaces. Satin finishes are more durable and easier to clean than matte finishes. They are ideal for high-traffic areas. Gloss finishes are the most durable and reflective. They can also highlight imperfections and require more maintenance.

Painting Techniques for Rendered Houses

There are two main techniques that can be used for rendering roller painting and spray painting. The choice between the two will depend on a number of factors. You will need to consider the size of the job, the condition of the render, and the desired finish.

Roller Painting

Roller painting is the most common technique for exterior walls. It is simple and straightforward.

A medium pile roller is generally recommended. It will allow the paint to be applied evenly and smoothly. Combine with high-quality paint to achieve a durable and long-lasting result.

Spray Painting

Spray painting involves using a spray gun to apply the paint to the surface of the render. It gives a much smoother and more even finish than roller painting.

Spray painting is more difficult than roller painting. It requires a greater level of skill and experience. It is more time-consuming and expensive than roller painting. You need specialist equipment.

Common Mistakes to Avoid

Painting a rendered house can be a daunting task, especially for those who are not experienced in home improvement. Here are some common mistakes to avoid:

Skipping the Preparation Stage

Do not skip the preparation stage. Clean the surface, repair any damage and apply the primer. Poor preparation work may lead to paint not adhering properly.

Using the Wrong Paint

Using the wrong type of paint can result in poor adhesion, peeling, and cracking. Remember to consider the climate and weather conditions in your area. If you get high humidity, choose a paint that is resistant to mould.

Applying Too Little or Too Much Paint

Applying too little paint can result in an uneven finish. Applying too much paint can lead to drips and runs. Apply the paint in thin, even coats.

Painting in the Wrong Weather Conditions

Painting in high humidity or extreme temperatures can cause the paint to dry too slowly or too quickly. This can result in cracking, peeling, and other issues. Avoid working in rainy or windy weather.

Maintaining Your Painted Rendered House

Regular maintenance ensures the paint job lasts a long time. Regular cleaning, inspecting for cracks and damage, and repainting helps maintain a beautifully painted rendered house.

Here are some tips to help you maintain your painted-rendered house:

Clean the Walls Regularly

Dirt, dust, and grime can accumulate over time making them look dull and dirty. Use a soft cloth or sponge with mild, soapy water, and wipe in a circular motion. Put light pressure on the wall. Wring out the wet cloth before you wipe down the wall. When you’re finished, rinse the wall with clean water to remove residue.

Inspect for Cracks and Damage

Inspect the walls regularly and fix any cracks or damage immediately. Check no cracks have appeared whilst the render is drying, and no bits have been missed. Check corners and around doors and windows. Use a fine exterior surface filler, such as Ronseal if needed.

Repaint When Necessary

No matter how well you maintain your painted exterior rendered walls it will need repainting. This can be due to fading, chalking, or just general wear and tear. When it’s time to repaint use a product specifically designed for rendered walls and is weather-resistant.

Need Help Painting Your Home Exterior? Contact Hunter Coast Painting

At Hunter Valley Painting, we work with qualified contractors who can help you determine your home’s interior and exterior painting needs. 

For ideas on how house painting adds value to your property, read Hunter Valley Painting Property Tips: Does Painting a House Add Value?

Regardless of the style or design of your home, our experienced team can provide residential painting services, ensuring high-quality workmanship and a great finish that will breathe new life into your property.

Speak to an expert at Hunter Valley Painting for a free consultation and quote today.