Blanc de Meudon (Calcium Carbonate) – Natural Cleaning & Window Whitening Powder

🌿What is Blanc de Meudon?

Blanc de Meudon is an ultra-fine natural calcium carbonate powder named after the historic chalk quarries of Meudon near Paris, France. It has been used for centuries in households, workshops, restoration, decorating, and traditional painting techniques.

Its very fine particle size makes it an effective cleaner and polish without being overly abrasive.

🌿Traditional Window Whitening

A long-standing European tradition is to mix Blanc de Meudon with water and brush it onto exterior windows.

Once dry, it forms a removable white coating that:

- reflects part of the sun's rays
- reduces solar heat entering through glass
- helps create a cooler indoor environment during hot weather
- washes away easily with water

This method has traditionally been used on greenhouses and is now increasingly used on homes during summer heatwaves.

The cooling effect depends on factors such as:

- window orientation
- amount of direct sunlight
- glass type
- climate
- thickness of the applied coating

🌿Surfaces Suitable For:
- Stainless steel
- Glass
- Mirrors
- Marble
- Granite
- Ceramic
- Porcelain
- Chrome
- Brass
- Copper
- Silver
- Silverware
- Tin
- Decorative objects
- Painted crafts
- Window glass

Always test first on an inconspicuous area.

🌿1. Cleaning & Polishing Paste

Mix:
- 1 tablespoon Blanc de Meudon
- Add water gradually until a smooth creamy paste forms.

- Apply using a soft cloth or sponge.
- Rub gently using circular motions.
- Allow to dry slightly if desired.
- Buff with a clean microfiber cloth.

🌿2. Natural Glass & Mirror Polish

- Prepare a creamy paste.
- Apply a thin layer.
- Let dry.
- Buff with a dry microfiber cloth for a streak-free finish.

🌿3. Traditional Summer Window Whitening
For reducing summer heat, apply the Blanc de Meudon mixture to the outside of clean windows. The dried coating reflects part of the sun's rays before they pass through the glass, helping reduce solar heat gain and create a more comfortable indoor environment.

Mix:
- 1 part Blanc de Meudon
- ½ part water

until a smooth paint-like consistency is obtained.

Apply a thin, even coat to the outside of clean windows using:
- a wide brush
- roller
- sponge

Allow to dry completely.

The white coating reflects sunlight while still allowing diffused daylight into the room.

When no longer needed, simply wash away with water.

🌿4. Festive Window Decorations

Mix with water to create a paint-like consistency.

Paint directly onto windows using brushes, stencils, or stamps.

Ideal for:
- Christmas
- Easter
- Halloween
- Children's crafts

Removes easily with water.

🌿5. Homemade Chalk Paint

Blanc de Meudon can be used as a natural mineral ingredient when making traditional chalk paints and decorative finishes.

• Bathroom cleaners
• Floors
• Kitchen cleaners
• Multipurpose cleaners
• Stain removal
• Windows & mirrors cleaners

- 100% Calcium Carbonate (Blanc de Meudon)
- 100% natural origin
- 100% biodegradable
- Non-toxic
- Free from nanoparticles

- Keep dry after opening.
- Store in a dry place.
- Avoid inhaling dust during handling.
- Keep out of reach of children.
- Avoid contact with eyes.
- Do not use on acid-sensitive surfaces without testing first.
- Always test on a small hidden area before treating valuable materials.

500 g