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Granite headstones are enduring tributes to our loved ones, but they can accumulate dirt, moss, and other residues over time. Proper cleaning not only preserves their appearance but also maintains their integrity. 

Preparation Before Cleaning

Cleaning a granite headstone requires careful preparation to ensure the stone's longevity and appearance. Proper preparation involves assessing the condition of the headstone, identifying the type of stains present, and gathering the necessary cleaning supplies. By following these steps, you can effectively clean the headstone while preserving its integrity.

Assessing the Condition of the Headstone

Before you begin cleaning, it's essential to evaluate the headstone's condition. Look for any cracks, chips, or signs of wear and tear. These imperfections can be exacerbated by improper cleaning methods.

Identifying the Type of Stains Present

Different stains require different cleaning approaches. Common stains on granite headstones include:

• Dirt and Dust: These can typically be removed with simple cleaning techniques.
• Moss and Lichen: These biological growths require specific treatments to ensure complete removal.
• Rust Stains: Often caused by metal objects left on or near the headstone.
• Organic Stains: From leaves, flowers, or bird droppings.

Gathering Necessary Cleaning Supplies

Having the right supplies on hand is crucial for an efficient and thorough cleaning process. Here’s what you’ll need:

A Suitable Cleaner

Hardscape BSC is an ideal cleaner for granite headstones as it is formulated without bleach or peroxides, ensuring it is safe for use on natural stone.

Soft Brushes

Use soft-bristle brushes to scrub the headstone gently.

Clean Cloths

Microfiber cloths or soft cotton cloths are perfect for wiping down the headstone after scrubbing.

Mild Detergent or Soap

A mild detergent or soap can be used for general cleaning.

Water

Clean water is essential for rinsing the headstone after cleaning. 

Hydrogen Peroxide

Hydrogen peroxide is effective for treating biological stains like moss and lichen. 

Poultice Materials

For stubborn stains, a poultice may be required.

Sealant (if needed)

After cleaning, you might consider applying a granite sealant. This helps protect the headstone from future stains and weathering. Ensure the stone is completely dry before applying the sealant.

Process of Cleaning Granite Headstones

Remove Excess Debris

Begin by clearing away any loose debris such as leaves, dirt, and twigs. This step is crucial as it prevents these materials from scratching the granite during the cleaning process.

Use a soft brush or your hands to gently remove the debris. Avoid using metal tools or anything abrasive that could scratch the surface of the granite. For more delicate areas, a soft cloth or a gentle vacuum can be effective.

Use a Suitable Headstone Cleaner

Hardscape BSC is a great option for cleaning granite headstones. Its formula is free from bleach and peroxides, ensuring it won’t harm the stone.

1. Apply Hardscape BSC: Spray the cleaner directly onto the granite surface.
2. Scrub Gently: Use a soft-bristle brush to scrub the surface in circular motions, focusing on stained or dirty areas.
3. Allow to Sit: Let the cleaner sit for a few minutes to penetrate and lift the dirt and grime.

Rinse the Granite Headstone with Clean Water

After scrubbing, rinse the headstone thoroughly to remove all traces of the cleaning solution. Use a bucket of clean water or a hose to rinse the stone completely.

Dry the Granite Headstone

Once rinsed, dry the headstone thoroughly to prevent water spots, which can leave unsightly marks.

Use a clean microfiber cloth to wipe down the headstone, absorbing as much water as possible.

If weather permits, allow the headstone to air dry naturally. Ensure it’s completely dry before applying any sealant or performing further cleaning.

Clean Any Inlays and Engravings

Inlays and engravings can accumulate dirt and debris, making them less legible and detracting from the headstone’s appearance.

Sealing Granite Headstones to Prevent Future Stains

Sealing granite headstones helps in preserving their appearance and protecting them from future stains. We’ll walk you through the necessary supplies and steps to ensure a proper seal.

Supplies Needed for Sealing Granite Headstones

To effectively seal a granite headstone, gather the following materials:

• A sealant suitable for granite surfaces (we recommend MB-24)
• Soft brushes
• Clean cloths
• Water
• Gloves
• Masking tape (if needed)

Steps for Sealing Granite Headstones

Clean the Headstone

Remove all dirt, stains, and debris using a gentle cleaner. 

Wait for Granite Headstone to Dry

Allow the headstone to dry completely before applying the sealant. Any trapped moisture can cause issues with the sealing process and affect the longevity of the seal. 

Apply Sealant Evenly

Apply the MB-24 Barrier Impregnating Sealer evenly across the entire surface of the headstone. Make sure to cover all areas, including any inlays and engravings, to provide comprehensive protection.

Wait for Sealant to Soak

Allow the sealant to penetrate the granite for about 15 minutes. During this time, the sealer will soak into the stone, creating a protective barrier.

Wipe Away Excess Sealant

After the 15-minute wait, use a clean, dry cloth to wipe away any excess sealant from the surface.

What to Avoid When Cleaning a Granite Headstone

Cleaning a granite headstone requires special care to preserve its appearance and integrity. Knowing what to avoid is just as important as knowing what to do. 

Harsh Chemicals

Harsh chemicals can damage the surface of granite headstones, causing discoloration and erosion over time. Products containing bleach, ammonia, or acidic substances can be particularly harmful. These chemicals may strip away the natural finish of the granite, leading to permanent damage.

Use Granite-Specific Cleaners and Sealers

Granite-specific cleaners and sealers are designed to work with the unique properties of granite.

Using products intended for other types of stone or surfaces can lead to ineffective cleaning or even damage.

Granite requires cleaners that can penetrate its porous surface without causing harm.

Avoid Abrasive Tools

Abrasive tools such as wire brushes, scouring pads, or metal scrapers can scratch and damage the smooth surface of granite headstones.

These scratches mar the appearance and create tiny crevices where dirt and moisture can accumulate, leading to further deterioration.