Quick answer: To apply white cement on a wall, repair cracks, clean the surface and moisten it lightly. Mix white cement with sand, 1 part cement to 2-3 parts sand for plaster, into a thick but spreadable paste. Spread it from top to bottom in a thin coat of 2-3 mm, smooth it, let it dry, sand lightly and prime before painting.
Feeling like your walls are dull and you may need to give them a new and bright look? Well, white cement could be the answer to your prayers! This article explains how to effectively cover the walls with white cement. Whether you want modern or it is just a clean and tough wall we’ll do it for you.
What is White Cement?
White cement is just like the normal cement but it has low iron contents that give it a white hue. When applied in construction and decoration it provides clean looking walls and is appropriate for all from frames to finishing coat.
Why Use White Cement?
- Looks Good: It creates a clean, modern look suitable for both new and old walls.
- Strong and Long-lasting: Just as durable as regular cement, white cement will last for years.
- Versatile Applications: Great for plastering, as a base for paint, or even on its own as white cement paint.
Process for Applying White Cement on Walls
a) Getting Started: Materials You’ll Need
- White cement
- Clean water
- Sand (if mixing for plaster)
- Mixing bucket
- Trowel or spatula
- Sandpaper
- Protective gear (gloves, goggles)
- Measuring tools
- Paintbrush or roller (for finishing)
b) Preparing the Wall
- Inspect the Wall: Check for cracks or holes, and repair any major issues.
- Clean the Surface: Remove dirt, dust, or old paint for better adhesion.
- Sand and Moisten: Sand rough areas, then lightly moisten the wall to help the white cement stick.
c) Mixing the White Cement
- Follow the Ratios: Use 1 part white cement to 2-3 parts sand for plastering.
- Mix Carefully: Add water slowly for a smooth paste. The mix should be thick but easy to spread.
- Let it Rest: After mixing, allow the paste to rest briefly to release air bubbles.
d) Applying the White Cement
- Base Coat: Start with a thin layer if the wall is rough.
- Spread Evenly: Apply cement from top to bottom, aiming for a 2-3 mm thickness.
- Smooth the Surface: Use your trowel for an even finish on small areas to prevent drying before smoothing.
e) Adding the Final Touches
- Sanding: Sand down any bumps after the cement dries.
- Dust Off: Wipe the wall with a damp cloth to remove any dust from sanding.
f) Painting (Optional)
- Prime the Wall: If painting over white cement, apply a primer for better adhesion.
- Seal: If you like the natural look, use a clear sealant to protect the surface.
Which walls suit white cement?
White cement works best on dry, sound plaster or masonry, mostly indoors. It is used as a plaster mix, as a smooth finishing coat, and as a base before paint. Do not apply it over a wall that is damp or seeping. The moisture pushes the coat off and leaves stains. Find and fix the cause first, using our guide on how to solve dampness in a wall.
If your goal is only a smooth surface for paint, many people use wall putty instead. Our comparison of white cement vs wall putty shows when each is the better choice.
How should you cure white cement?
Cement gains strength by reacting with water, not just by drying. If the coat dries too fast it cracks and turns powdery. Once the surface has set, sprinkle it lightly with clean water and keep it damp for the first few days. Keep it out of direct sun and strong wind while it cures. Wait until it is fully dry before sanding, priming or painting.
Tips for Success
- Watch the Weather: Apply white cement in moderate temperatures.
- Get the Texture Right: Aim for a spreadable consistency.
- Mix in Batches: Only mix what you can use in a single application.
Troubleshooting
- Cracks: Apply thinner coats and allow each to dry completely.
- Uneven Surface: Smooth as you go or sand afterward.
- Poor Adhesion: Check wall prep and moisture, and make sure the mix is correct.
Common mistakes to avoid
- Dirty sand or tools: white cement shows every stain. Use clean, fine sand, a clean bucket and clean water, or the finish will turn grey or patchy.
- Too much water: a thin, runny mix shrinks and cracks as it dries. Keep the paste thick but spreadable.
- Applying on a dusty or dry wall: dust stops the coat from bonding, and a bone-dry wall pulls the water out of the mix. Clean the wall and moisten it lightly first.
- One thick coat: thick coats slump and crack. Build up the surface in thin coats instead.
- Mixing too much at a time: the mix starts to set in the bucket. Make small batches and do not add water to a mix that has begun to stiffen.
- Skipping safety gear: cement dust and wet cement irritate the skin, eyes and lungs. Wear gloves and goggles, and a dust mask when sanding.
Conclusion
Using white cement on walls is a unique way to achieve a neat and quality appearance. Whether you choose to paint with white cement or apply it directly, this method ensures a lasting finish. Walls and Dreams offers expert insights on how to effectively use white cement for beautiful and durable walls.
Before you start, compare it with wall putty in white cement vs wall putty and read the importance of putty in construction. For the base coat, see the difference between plastering and pointing, and for the paint on top, these home painting tips. If you want a finished wall without doing it yourself, see our renovation company page.
Frequently Asked Questions
1. How many hours does it needed by white cement need to dry?
White cement typically may take up to 24 hours to get set. Refer to the manufacturer for more information as to whether this varies with the thickness/temperature, etc.
2. Can white cement be applied over painted walls?
Yes, but ensure the paint is stable. Clean the wall, remove loose paint, and sand for better adhesion.
3. What if my white cement mixture starts to set too quickly?
White cement can harden fast, so mix only what you need at a time.
