Pointing is an important part of construction work, especially when you want to protect brick walls, improve their appearance, and make the structure stronger. A good pointing job depends on the quality of the cement mixture you prepare. If the mixture is too weak, it will crack and fall out within months. If it is too strong or too dry, it will not bond properly with the joints. That is why learning how to make a strong pointing cement mixture is essential for long-lasting results.
We will explain everything in simple and easy English. You will learn what pointing is, why the right cement mixture matters, what materials you need, how to prepare the mixture correctly, and how to apply it for a strong and clean finish. Whether you are a homeowner or a beginner in construction, this guide will help you create a reliable pointing mix that lasts for years.
What Is Pointing and Why Is It Important?
Pointing is the process of filling and finishing the joints between bricks or stones using a cement-based mixture. Over time, weather, water, and age can damage these joints. When the joints become weak or cracked, water can enter the wall, causing dampness, structural weakness, and even mold growth. Proper pointing seals the gaps and protects the wall from damage.
A strong pointing mixture also improves the look of the building. Fresh, neat pointing makes walls look clean, uniform, and well-maintained. Because of this, pointing is both a protective and decorative process. However, the strength and appearance of pointing depend heavily on the mixture you prepare.
Why the Right Mixture Matters
Using the correct pointing cement mixture is essential because the wrong mix can create major problems. If your cement mixture is too sandy, it will crumble easily. If it contains too much cement, it may shrink and crack as it dries. A perfect balance gives strength, flexibility, and durability.
A strong pointing mixture sticks well to the joints, resists weather conditions, and keeps the wall solid. A good mixture also ensures that the pointing does not fall out or break when exposed to rain, heat, or cold. Therefore, the mixture you use decides the quality of your work.
Correct Ratio for a Strong Pointing Mixture
The most recommended ratio for a strong pointing cement mixture is:
1 part cement : 3 parts fine sand
This ratio gives the right balance between strength and flexibility. It creates a mixture that sticks well, dries properly, and stays strong for many years.
However, for older buildings or softer bricks, a slightly weaker mix (1:4) may be used to avoid damaging the bricks. For modern bricks and stronger walls, the 1:3 ratio is ideal.
Step-by-Step Guide to Make the Mixture
1. Measure the Materials
Start by measuring the cement and sand in the correct ratio. For example, if you use 1 bucket of cement, measure 3 buckets of fine sand. Always make sure both materials are clean and dry.
2. Mix the Sand and Cement
Pour the sand and cement into your mixing tray or bucket. Use a trowel or shovel to mix them thoroughly until the color becomes uniform. Mixing dry materials properly ensures good bonding later.
3. Slowly Add Water
Start adding water slowly. Do not pour a large amount at once. Add a little, mix it, and then add more only if needed. You want a mixture that is firm but workable.
4. Check the Consistency
The mixture should be smooth but not watery. A strong pointing mixture should hold its shape when you pick it up with a trowel. If it drips or runs, it is too wet. If it crumbles, it is too dry. Adjust with sand or water as needed.
5. Optional – Add Plasticiser
If you want the mixture to be smoother and easier to apply, you can add a small amount of plasticiser. Follow the instructions on the product to avoid adding too much.
Preparing the Wall Before Applying the Mixture
Before you start pointing, the wall must be properly prepared. A strong mixture will only work well if it sticks perfectly to the joints.
Clean the Joints
Remove any dust, old mortar, or loose pieces from the joints. You can use a wire brush or pointing rake. Clean joints help the new mixture bond better.
Wet the Joints Slightly
Before applying the mixture, lightly dampen the joints with clean water. This prevents the dry bricks from absorbing water from the mixture too quickly, which can cause cracks.
Check for Damage
If any bricks are cracked or loose, fix them before starting the pointing process. Good preparation leads to better results.
How to Apply the Pointing Mixture
1. Fill the Joints
Take some mixture on your trowel or pointing tool. Push it firmly into the joints. Make sure the joints are completely filled without air pockets.
2. Smooth the Surface
Use the edge of your pointing tool to smooth the surface. Your goal is to create a clean, even finish that matches the surrounding wall.
3. Shape the Pointing
Depending on the style you prefer, you can shape the pointing as flush, recessed, or weathered. Weathered pointing is common because it helps water run off easily.
4. Clean Excess Mixture
After finishing each area, wipe off any extra mortar from the edges of the bricks. This will keep your wall neat and clean.
Common Mistakes to Avoid
Many beginners make mistakes when preparing pointing mixtures. Avoiding these errors will help you achieve a stronger and more professional finish.
Using dirty sand: Impurities weaken the mixture.
Adding too much water: Causes cracks and reduces strength.
Applying on dry joints: Prevents proper bonding.
Mixing without measuring: Leads to inconsistent results.
Working too fast: Causes messy and uneven pointing.
By avoiding these mistakes, your pointing work will be long-lasting and strong.
How Long Does the Mixture Take to Dry?
A pointing mixture usually takes 24 to 48 hours to set properly. However, full curing may take up to 7 days. During this period, protect the wall from heavy rain or extreme heat to avoid damage. The mixture becomes stronger as it cures.
Conclusion
Making a strong pointing cement mixture is not difficult, but it requires the right materials, correct ratio, and proper mixing technique. When you follow these steps, you create a durable mixture that bonds well, protects your walls, and lasts for many years. Whether you are repairing old joints or working on new construction, a well-prepared pointing mixture will give your wall a strong and clean finish.