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Calcium Carbonate - Chalk Paint Additive
- $19.99
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$16.99 -
--18%
Calcium Carbonate Chalk Paint Additive Premium 200 Mesh fine powder for professional-grade DIY chalk paint and furniture restoration. Transform any...
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Calcium Carbonate - Chalk Paint Additive - 1 Pound
$19.99
Calcium Carbonate Chalk Paint Additive
Premium 200 Mesh fine powder for professional-grade DIY chalk paint and furniture restoration. Transform any latex paint into beautiful, velvety chalk paint at a fraction of boutique prices.
Ideal Applications
🪑
Furniture Restoration
1 cup per pint of paint
🎨
DIY Chalk Paint
4–8 cups per gallon
🏠
Home Décor & Walls
2 cups per quart
🖼️
Stained Glass Cement
Mix with linseed oil
✂️
Arts & Crafts
Adjust ratio to desired finish
⚽
Field Line Marking
Safe for grass & turf
FEATURES
🔬 200 Mesh Ultra-Fine Powder
Consistent 200 mesh particle size ensures smooth, lump-free mixing with any latex paint — no gritty texture or visible particles in your finished surface.
🎨 True Color Representation
Pure marble white composition won't tint or alter your paint color. What you mix is what you get — perfect for pastels, brights, and deep tones alike.
💰 Boutique Quality, DIY Price
Create professional-grade chalk paint for a fraction of the cost of pre-mixed brands. One 5 lb bag can make multiple gallons of chalk paint.
🪑 Customizable Chalkiness
Adjust the calcium carbonate-to-paint ratio to achieve anything from a subtle matte finish to a heavily textured vintage look. Full control over your final result.
🧪 Tested for Purity
Independently lab tested to ensure consistent quality and composition. Pure calcium carbonate with no fillers, additives, or contaminants.
🖌️ Works with Any Latex Paint
Compatible with any brand of latex paint in any color. Use flat, eggshell, or satin — the calcium carbonate converts them all into chalk paint.
🔧 Multi-Use Versatility
Beyond chalk paint, use for stained glass cement (with linseed oil), field line marking, craft projects, and as a whiting agent for various applications.
📦 Long Shelf Life
Shelf life of 5 years when stored properly. Calcium carbonate is a stable, non-reactive mineral powder that won't degrade, clump, or lose effectiveness over time.
🌿 Natural Mineral Source
Derived from natural limestone (calcium carbonate). A non-toxic mineral compound that's safe to handle and environmentally responsible.
✅ Easy Three-Ingredient Process
Just calcium carbonate, water, and latex paint. No complicated formulas or specialty equipment needed — mix and apply in minutes.
APPLICATION RATES & DIRECTIONS
Chalk Paint Mixing Ratios
| Project Size | Calcium Carbonate | Water | Latex Paint |
|---|---|---|---|
| Small Project | 1 cup (8 oz by weight) | 2 tablespoons | 1 pint |
| Medium Project | 2 cups (16 oz by weight) | 4 tablespoons | 1 quart |
| Large Project | 4 cups (32 oz by weight) | 8 tablespoons | 2 quarts |
| Full Gallon Batch | 4–8 cups | ½–1 cup | 1 gallon |
Stained Glass Cement
| Component | Amount | Notes |
|---|---|---|
| Calcium Carbonate | By consistency | Add gradually until desired thickness |
| Linseed Oil | Base amount | Start with oil, add powder slowly |
Adjusting Texture
Use less calcium carbonate (4 cups per gallon) for a smoother finish, or more (up to 8 cups per gallon) for a heavier, more textured vintage look. Always dissolve the powder in water first before adding to paint to prevent clumping.
HOW TO USE
Making Chalk Paint
- Measure calcium carbonate powder according to the application rates table above.
- In a separate container, combine the calcium carbonate with water and stir until a smooth paste forms (no lumps).
- Add the paste to your latex paint and stir thoroughly until fully incorporated.
- Test on a small area or scrap surface to check consistency and color.
- Apply with a brush or roller. Chalk paint typically requires 2 coats for full coverage.
- Allow to dry completely between coats (typically 1–2 hours depending on humidity).
- Once fully dry, distress with fine sandpaper if desired for a vintage look.
- Seal with wax or a clear topcoat for durability.
Stained Glass Cement
- Start with linseed oil in a mixing container.
- Gradually add calcium carbonate powder, mixing continuously.
- Continue adding powder until the cement reaches the consistency of soft putty.
- Apply to stained glass seams using traditional glazing techniques.
Field Line Marking
- Use calcium carbonate powder directly in a line marking machine or spread by hand along a guide.
- Calcium carbonate is safe for grass and will not burn or damage turf.
Pro Tip: Eliminate Grittiness
Always dissolve your calcium carbonate in water first to create a smooth paste before adding it to paint. If you still notice slight texture after drying, lightly sand with 220-grit sandpaper between coats. Using less powder (closer to 4 cups per gallon) also produces a smoother finish.
When Calcium Carbonate Is the Right Choice
- Making DIY chalk paint from latex paint in any color
- Furniture restoration and upcycling projects
- Stained glass cement and glazing work
- Field and sports line marking on grass
- General craft and art projects requiring a white powder base
When to Consider Other Options
- If you need food-grade calcium carbonate for dietary supplements or cooking — use a food-grade product instead
- If you need to write on a chalkboard surface — you need chalkboard paint, which is different from chalk paint
- If you need to whitewash fruit trees — use hydrated lime instead of calcium carbonate
- If you need to raise soil pH — consider Dolomite Lime for a combined calcium and magnesium solution
SAFETY & HANDLING
Personal Protective Equipment (PPE)
- Wear a dust mask when handling dry powder to avoid inhaling fine particles
- Wear safety glasses or goggles to protect eyes from dust
- Gloves recommended for prolonged handling
- Wash hands thoroughly after handling
Storage Guidelines
- Store in a cool, dry place in the original sealed container
- Keep away from moisture — calcium carbonate can absorb water and clump
- Keep out of reach of children and pets
- Shelf life: 5 years when stored properly
Application Precautions
- Work in a well-ventilated area when mixing dry powder
- Add powder to water first (not water to powder) to minimize dust
- This product is not food grade — do not use for dietary or personal care purposes
- Not suitable for aquarium use without careful testing of water hardness levels
First Aid
- Eye contact: Flush with clean water for 15 minutes. Seek medical attention if irritation persists
- Skin contact: Wash affected area with soap and water
- Ingestion: Do not induce vomiting. Contact Poison Control (1-800-222-1222) or seek medical attention
- Inhalation: Move to fresh air. Seek medical attention if respiratory symptoms persist
Refer to the Safety Data Sheet (SDS) for complete safety information.
COMPLETE YOUR SYSTEM
Pair your calcium carbonate with these complementary products to get the best results from your chalk paint and craft projects.
FREQUENTLY ASKED QUESTIONS
What do I need to make chalk paint with calcium carbonate?
Just three ingredients: calcium carbonate powder, water, and any latex paint. Mix the calcium carbonate with water to form a smooth paste, then stir into your paint. We recommend 4–8 cups of calcium carbonate per gallon of paint, depending on the level of chalkiness you want.
Does calcium carbonate change the color of the paint?
No. Our calcium carbonate is pure marble white and will not alter or tint the color of your paint. The color you see in the can is the color you'll get in your chalk paint.
Is it normal for homemade chalk paint to feel slightly gritty?
Some slight texture is normal with homemade chalk paint compared to pre-mixed commercial brands. To minimize grittiness: dissolve the powder in water first before adding to paint, use a lower ratio of calcium carbonate, and lightly sand with fine-grit sandpaper between coats.
Can I use this calcium carbonate for food or personal care?
No. This is not food grade calcium carbonate. It should not be consumed orally or used for personal care products like toothpaste. For dietary or personal care applications, please use a food-grade or pharmaceutical-grade product.
What is the difference between chalk paint and chalkboard paint?
Chalk paint creates a matte, vintage-style finish on furniture and surfaces. Chalkboard paint creates a surface you can write on with chalk. They are completely different products. Calcium carbonate is used to make chalk paint, not chalkboard paint.
What is the mesh size and why does it matter?
Our calcium carbonate is 200 mesh, meaning the particles pass through a 200 lines-per-inch screen. This ultra-fine consistency is what allows smooth, even mixing with paint. Coarser powders can leave visible grit in your finished surface.
Can I use calcium carbonate to mark lines on grass?
Yes. Calcium carbonate (limestone) is 100% safe for grass and won't burn or damage turf. It's commonly used for marking sports fields and property lines.
How long does calcium carbonate last in storage?
When stored in a sealed container in a cool, dry place, calcium carbonate has a shelf life of approximately 5 years. It's a stable mineral that won't degrade over time.
GROW WITH CONFIDENCE
Product Quality Guaranteed
- Processed and packaged in California, USA
- Independently lab tested for purity and consistency
- 200 Mesh particle size verified for every batch
- Pure calcium carbonate — no fillers or additives
Hassle-Free Return Policy
We stand behind the quality of our Calcium Carbonate. If you're not completely satisfied, we offer a 90-day money-back guarantee. Simply return the unused portion in its original packaging for a full refund.
Environmental Responsibility
- Natural limestone mineral with minimal processing
- Transitioning to compostable packaging
- Non-toxic and environmentally safe
- Sustainable sourcing practices
Charitable Contributions
1% of all profits go to our foundation, focused on improving educational opportunities for children. Learn more at greenway.foundation.
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