Isabella Flores
Rough-sawn cedar is a popular choice for fencing due to its natural resistance to decay and insects. Its rustic, warm aesthetic is desirable, but if you're looking to paint rough-sawn cedar fence boards, there are some important considerations to ensure a lasting finish. Firstly, new cedar wood contains natural oils that can interfere with paint adhesion, so it's best to let the wood weather for a few weeks to several months before painting. Once the wood is ready, it's important to clean and prep the surface, treating it for moss, mould and algae to prevent discolouration and damage to the paint. When it comes to choosing a paint, opt for one that is suitable for exterior use, with good composition, durability and flexibility. It's also worth noting that rough-sawn timber uses 30-40% more paint than flat sawn timber, so you may need to purchase extra paint to ensure full coverage.
| Characteristics | Values |
|---|---|
| Type of wood | Rough-textured wood, also known as rough-sawn lumber |
| Wood condition | New or old |
| Wood treatment | Clean and prep the wood before applying stain or paint |
| Paint or stain | Stain highlights the wood grain, creating a more natural look than paint |
| Paint type | Oil-based primer for cedar fences |
| Paint application | Brush or roller |
| Stain type | Resene Waterborne Woodsman wood stain |
| Stain application | Allow the stain to soak for 2-3 minutes, then wipe off excess |
| Number of coats | Two coats of paint or stain are usually sufficient |
| Paint colour | Avoid solid colours, use opaque stain instead |
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What You'll Learn
Cleaning rough-sawn cedar fence boards
Rough-sawn cedar fence boards are a popular choice for exterior fencing due to their rustic charm and natural resistance to decay. To maintain their structural integrity and visual appeal, regular cleaning is essential. Here is a comprehensive guide to cleaning rough-sawn cedar fence boards:
Prepare the Work Area:
Before starting the cleaning process, ensure you have the necessary safety gear and cleaning materials. This includes safety glasses, rubber gloves, old clothing, and a garden hose with a spray nozzle. If using a pressure washer, also known as a water blaster, ensure you have the correct nozzle tip and adjust the pressure to the recommended setting of 500 to 1,500 psi. Always test the pressure washer on an inconspicuous area first and exercise caution to avoid damaging the soft cedar wood.
Treat the Fence:
Check your fence for any signs of mould, mildew, or algae. If present, treat the fence with a suitable cleaning solution, such as a mild detergent or a cedar-specific wood cleaner. For a natural alternative, a mixture of vinegar and water can be sprayed onto the fence to address mould and mildew issues. Allow the cleaning solution to soak into the timber for the recommended duration, which may be up to 48 hours for certain products.
Scrub and Rinse:
After treating the fence, use a soft-bristled brush to gently scrub away any remaining dirt, grime, or fungal growth. Avoid using abrasive brushes that can scar the wood. Once the fence is scrubbed clean, rinse the fence thoroughly with a garden hose or, if necessary, a gentle setting on your pressure washer. Ensure the fence is completely dry before proceeding with any staining or painting projects.
Maintenance and Prevention:
Regular cleaning of your cedar fence boards is essential to preserving their beauty and structural integrity. It is recommended to clean and reapply stain or paint as needed, especially in high-traffic or sun-exposed areas. Consistent maintenance helps to prevent issues like rot, pest infestation, and structural damage caused by warping or splitting. Remember that rough-sawn cedar fence boards may require 30 to 40% more paint or stain than flat wooden surfaces due to their rugged texture.
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Choosing the right paint
Rough-sawn cedar lumber is a popular choice for exterior fencing due to its natural resistance to decay and insects. While some appreciate its natural hue, others may prefer to paint it to suit their unique vision.
When it comes to selecting paint for cedar fence boards, several factors come into play. Here are some key considerations:
- Suitability for Exterior Use: Cedar fence boards are typically used outdoors, so it's essential to choose paint specifically designed for exterior applications. This ensures the paint can withstand varying weather conditions and protect the wood from the elements.
- Composition and Durability: Opt for paint with a composition that allows the wood to breathe and doesn't trap moisture. Trapped moisture can lead to wood rot or paint peeling. Look for paint that offers excellent adhesion and protection against UV rays and moisture.
- Flexibility: Consider using a flexible paint that can move with the wood as it expands and contracts due to temperature and humidity changes. This helps prevent cracking and peeling over time.
- Finish and Aesthetics: The chosen paint's finish will impact the final appearance of the fence. Whether you prefer a glossy, semi-gloss, or matte finish, ensure it aligns with your desired aesthetic. Additionally, consider the colour carefully, as it will cover the natural grain and colour of the cedar.
- Environmental and Health Safety: Some paints contain volatile organic compounds (VOCs), which can be harmful to the environment and human health. Opt for paints with low VOC levels to ensure a safer and more environmentally friendly option.
While paint can transform the appearance of your cedar fence, it's crucial to prepare the surface properly before painting. Ensure the wood is clean, dry, and free from any mould or algae. Lightly sand the surface to remove any rough spots and create a smooth base for the paint to adhere to. Priming the fence with an oil-based primer is also recommended for better adhesion and a smoother finish.
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Priming the fence
Before priming a rough-sawn cedar fence, it is important to prepare the wood. This involves cleaning and treating the wood to ensure the fence is in the best possible condition. Start by cleaning the fence with a mild detergent and water to remove any dirt, grime, or mildew. For older fences, consider using a pressure washer for a deeper clean, but be careful not to damage the wood. If your rough-sawn timber has been previously stained, it is important to identify the product used. If an oil-based stain was applied, opt for a specific oil-based stain remover.
Once the fence is clean, treat the timber for moss, mould, and algae using a suitable product. Allow the treatment to soak into the timber for the recommended time, usually around 48 hours, before scrubbing and rinsing. Then, give the surface a thorough clean using a timber and deck wash for stained or bare timber surfaces. This step is crucial to ensure the treatment reaches deep into the grain of the wood, preventing mould growth under the paint. After treating and cleaning the fence, ensure it is completely dry before proceeding to the next step.
The next step is to sand the surface lightly. Sanding helps remove any rough spots and creates a smoother base for the primer and paint to adhere to. It is important to note that rough-sawn timber may not be as easily sanded as other types of wood, so consider using a product like Resene TimberLock in lieu of sanding. However, if the wood is new and has not weathered, sanding may be sufficient.
Now, you are ready for priming. Priming is critical for cedar fences as it seals the wood and provides a smooth base for the paint. Use an oil-based primer for its excellent adhesion and stain-blocking properties. Apply the primer evenly, using a brush or roller, ensuring all areas of the fence are covered. Pay close attention to the tops, sides, and joints between the planks. Allow the primer to dry thoroughly before moving on to the next step, which is painting. Remember, rough-sawn timber will absorb paint quickly, so it might take longer to dry than other surfaces.
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Painting techniques
Rough-sawn cedar is a popular choice for exterior fencing due to its natural resistance to decay and insects, as well as its attractive rustic appearance. When it comes to painting rough-sawn cedar fence boards, there are several important considerations and techniques to ensure a lasting and aesthetically pleasing finish.
Firstly, it is crucial to determine whether the cedar wood is new or old. New cedar wood contains natural oils that can interfere with paint adhesion. Therefore, it is recommended to let new cedar weather for several weeks to a few months before painting, to reduce the oil content and allow the wood to age. For older cedar fence boards, it is important to clean and prepare the surface thoroughly. This involves using a mild detergent and water to remove any dirt, grime, or mildew. For older fences, a pressure washer can be used for a deeper clean, but care must be taken not to damage the wood.
Once the fence is clean and dry, the surface should be sanded lightly to remove any remaining rough spots and create a smoother base for the primer and paint. This step is especially important for new cedar wood to ensure better paint adhesion. However, old, greyed rough-sawn timber may not be easily sanded, so a product like Resene TimberLock can be used instead to prepare the surface before painting.
Priming is a critical step when painting cedar fences as it helps seal the wood and provides a smooth base for the paint to adhere to. An oil-based primer is recommended for its excellent adhesion and stain-blocking properties. Apply the primer evenly using a brush or roller, ensuring all areas of the fence are covered. Allow the primer to dry completely before proceeding to the next step.
When choosing a paint for rough-sawn cedar fence boards, it is important to consider the paint's composition, durability, and flexibility, as well as its suitability for exterior use. The paint should be able to withstand tough weather conditions and provide protection against the elements, such as UV rays and moisture. It is recommended to opt for paints specifically designed for exterior rough-sawn timber, such as Resene Lumbersider or Resene Quick Dry primer. Additionally, consider using a cutting-in brush to reach between the fence palings and near the ground line for a precise application.
It is generally recommended to apply at least two coats of paint to rough-sawn cedar fence boards. Allow the first coat to dry thoroughly before applying the second coat. To avoid lap marks and give the paint enough time to dry, it is best to avoid painting in direct sunlight.
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Paint maintenance
A painted cedar fence may require periodic repainting or touch-ups every few years, depending on the climate and exposure to the elements. Regular maintenance, such as touch-ups and cleaning, will extend the life of your paint job and keep your cedar fence looking vibrant for years.
Before painting, it is important to treat the wood for moss, mould, and algae using a suitable product. Mould spores can penetrate deep into the grain of the wood, and if left untreated, can grow through new paint and damage and discolour it. After treating the wood, scrub it down, rinse it, and then give the surface a good clean using a suitable cleaning product.
Once the fence is clean, sand the surface lightly to remove any rough spots and to create a smooth base for the primer and paint. Ensure the fence is completely dry before moving to the next step. Priming is critical for cedar fences, as it helps in sealing the wood and provides a smooth base for the paint. Use an oil-based primer for its excellent adhesion and stain-blocking properties. Apply the primer evenly using a brush or roller, covering all areas of the fence.
When painting, start from the top and work your way down to prevent drips and streaks. Use a brush for edges first, then use a roller for flat surfaces to ensure even coverage. Apply paint in thin, even coats to avoid drips and ensure a smooth finish. Be mindful of weather conditions—avoid painting in direct sunlight or humid conditions, as this can affect the paint’s drying and adherence. Allow sufficient time for the first coat of paint to dry. Check the manufacturer’s instructions for the recommended drying time. Once the first coat is dry, assess if a second coat is needed for better coverage and colour depth. If so, apply the second coat in the same manner as the first. After the final coat, allow the fence to dry completely before exposing it to moisture or heavy use.
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Frequently asked questions
Yes, you can. However, it's important to note that painting will cover the wood's natural grain and colour. If you want to maintain the natural appearance of the cedar, staining might be a better option.
First, ensure your fence is in the best possible condition. Clean the fence thoroughly with a mild detergent and water to remove any dirt, grime, or mildew. Consider using a pressure washer for a deeper clean. Once the fence is clean, sand the surface lightly to remove any rough spots and create a smooth base for the primer and paint. Ensure the fence is completely dry before moving on to the next step.
Priming is critical for cedar fences as it helps seal the wood and provides a smooth base for the paint. Use an oil-based primer for its excellent adhesion and stain-blocking properties.
The choice of paint primarily revolves around the paint's composition, durability, and flexibility, as well as its suitability for exterior use. Consider the natural oils in new cedar wood, which can interfere with paint adhesion. Let the wood weather for a few weeks to several months to reduce the oil content before painting.
You can use a brush or roller to apply the primer and paint evenly, covering all areas of the fence. If your project involves fences, you may need to use a cutting-in brush to cut between the fence palings or near the ground line. Allow the first coat to dry thoroughly before applying the second coat.
