Interlocking Concrete Blocks, are applicable in many kinds of builds, but some people may not be too keen on them, simply because of their limited aesthetics. But can they be customise?
In this blog, we will explore this by answering the question ‘Can you paint Interlocking Concrete Blocks?’
At PPC Concrete Products, we are here to provide solutions for your construction needs, from the person working their own part-time project, to commercial clients, and everyone in-between.
Monthly construction output had risen an estimated by an 1.6% value in June 2023, and we would like to think our accessible concrete products had a small part to play by giving our clients easy access to reliable and easy-to-use construction solutions.
Are Interlocking Concrete Blocks paintable?
Yes. It is entirely possible to paint interlocking concrete blocks. However, not any old paint will do. Due to the porous nature of concrete, and the outdoor placement of interlocking concrete block, specific paints are required.
Masonry paint is the most common and generally recommended option. Masonry paint is specifically formulated to adhere to concrete, brick, and other masonry surfaces. It’s designed to be weather-resistant, protecting the blocks from rain, sun, and temperature fluctuations. This makes it perfect for interlocking concrete blocks.
Make sure you look for high-quality, 100% acrylic masonry paint for optimal durability. For the best adhesion, surface preparation is key. Ensure the blocks are clean, dry, and free of any loose debris. In some cases, a primer might be necessary, especially for very porous blocks, to ensure proper adhesion and even coverage.
In any instance, you should check with your interlocking concrete block provider to understand which paint to opt for.
With PPC Concrete Products, we provide interlocking concrete blocks in various sizes, in either a traditional uniform concrete aesthetic, or a ‘rock wall’ option. The latter option creates a look that gives the impression of a stone-built wall. This option is extremely difficult to paint coherently however, and is not recommended.
How do I apply paint to an interlocking concrete block?
Surface preparation is the first place to start, this is started by cleaning the surface you wish to paint. Using a pressure washer, or stiff brush are ideal for removing dust, dirt, and in some cases, efflorescence.
Once dry, prime the surface with the appropriate primer, with a roller that has a thick nap. Allow this to dry once again before applying your paint of choice with multiple coats. Using a thick nap roller allows the paint to adhere to the textured surface of the concrete blocks.
Additionally, for corners and edges, paint brushes are recommended.
If you are new to painting in general or don’t have the time or experience when it comes to painting concrete blocks, it may be a better option to speak to professionals who can achieve what you want.
What are the pros and cons of painting interlocking concrete blocks?
Pros of painting interlocking concrete blocks:
Enhanced aesthetics
Painting allows for customisation of colour, transforming a plain concrete surface into a visually appealing feature. This is especially valuable for improving the look of outdoor spaces. Furthermore, it can hide imperfections (if any) and create a more unique appearance.
Increased protection
A quality masonry paint acts as a barrier against moisture, which can cause concrete to deteriorate over time. This is particularly important in areas with high rainfall or humidity. Painting can also provide protection against UV damage, extending the lifespan of the concrete blocks.
Improved maintenance
Painted surfaces are generally easier to clean than unpainted concrete. Dirt and grime are less likely to adhere to a smooth, painted surface.
Cons of Painting Interlocking Concrete Blocks:
Surface preparation
Proper preparation is crucial for a successful paint job. This can be time-consuming and labour-intensive, involving thorough cleaning and potentially, repairs (depending on the state of the surface before painting).
Maintenance requirements
Painted concrete may require periodic repainting, especially in outdoor environments, as the paint can fade, chip, or peel over time.
Potential for moisture issues
If the concrete is not allowed to properly breathe, painting can trap moisture within the blocks, leading to damage, requiring further maintenance. Improper paint selection can make this issue worse.
Paint adhesion
Concrete is a difficult substrate to get paint to adhere to without correct preparation. If you fail to choose the correct paint choices, it will not last.
Increased cost and time
In most cases, a painted interlocking concrete block is not an option from suppliers, it’s something you’d need to organise yourself. As a result, this can incur extra costs for materials, and will add time to finish the project in question.
How do I maintain a painted interlocking concrete block?
You can maintain an interlocking concrete block by cleaning the blocks regularly, and undergoing maintenance processes depending on the state of the blocks. By doing this, it helps your blocks look their best and last that little bit longer. Here are the methods you can use to maintain your interlocking concrete blocks.
How do I clean a painted interlocking concrete block?
Sweeping: Regularly sweep the surface to remove loose dirt, leaves, and debris. This prevents buildup that can stain or damage the paint.
Washing:
- Periodically wash the blocks with a mild detergent and water.
- Use a soft brush or sponge to gently scrub away dirt and grime.
- Rinse thoroughly with clean water.
- For tougher stains, a diluted solution of dish soap can be used.
Pressure washing:
- A pressure washer can be effective for removing stubborn dirt, but use it with caution.
- Use a low-pressure setting and a wide nozzle to avoid damaging the paint.
- Test a small, inconspicuous area first to ensure the pressure doesn’t cause peeling or chipping.
How do I fix specific issues with my interlocking concrete block?
Efflorescence:
- If you notice white, powdery deposits (efflorescence), brush them off with a stiff brush.
- In severe cases, a specialised efflorescence cleaner may be necessary. Follow the manufacturer’s instructions carefully.
Stains:
- Address stains promptly to prevent them from setting.
- For oil or grease stains, use a degreaser.
- For mould or mildew, use a mildew cleaner. For mould/mildew, it should be removed ASAP, as it can spread and become more severe.
Chipping or Peeling Paint:
- Inspect the painted surface regularly for signs of chipping or peeling.
- For small areas, touch up the paint with the same type of paint used originally.
- For larger areas, you may need to repaint the affected section.
- When repainting, ensure proper preparation of the area, by removing any loose paint, and cleaning the area before applying new paint.
How do I prevent issues with my painted interlocking concrete block?
- Proper Drainage: Ensure proper drainage around the blocks to prevent water from pooling, which can damage the paint.
- Avoid Harsh Chemicals: Avoid using harsh chemicals or abrasive cleaners that can damage the paint.
- Regular Inspections: Conduct regular inspections to identify and address any potential problems early on.
By paintable concrete blocks today
As an established supplier all over the UK, PPC Concrete Products is always happy to help, which is why we encourage you to get in touch with any questions you may have or have a look at our FAQ.
In this blog, we hope to have answered the question ‘Can you paint Interlocking Concrete Blocks?’ Whilst also providing extra information in regard to construction solutions that we offer.
Take a read of our case studies to truly understand how we have provided solutions for business in the past with the use of our interlocking concrete blocks, and ultimately, how we can help you today.
Read our blog page for more insights into our passion, construction.
Address:
The Old Gasworks,
Higginshaw Lane,
Royton,
Oldham,
OL2 6HQ
Opening Hours:
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Tel: 01706 655245
Email: info@ppcconcreteproducts.co.uk



