Headstones and monuments are more than just stone—they hold history, memories, and sentimental value. Proper care is essential to preserving their beauty and integrity over time. Unfortunately, many cleaning methods and products can cause harm- the opposite of your intentions. Here’s a quick guide on what not to use when cleaning stone:
1. Power Washing
While power washers may seem like a quick fix, they can cause irreparable damage. Water pressure exceeding 90 psi risks harming unsound stones, accelerating deterioration like spalling and sugaring. Instead, opt for a gentle pump sprayer set to mist, using clean water to moisten the surface delicately.
2. Bleach
Bleach may give the impression of a thorough clean, but sodium hypochlorite (common bleach) and calcium hypochlorite (pool bleach) leave behind soluble salts that penetrate the stone’s pores. Over time, these salts crystallize, leading to cracking and erosion. Bleach’s high alkalinity (pH level of 13) can stain and weaken the stone’s surface, eventually causing it to crumble. Bleach is also environmentally harmful. Avoid bleach and choose pH-balanced cleaners like D/2 for safer maintenance.
3. Sandblasting
Sandblasting, even with softer materials like glass spheres, harshly abrades the stone’s surface. This process accelerates deterioration, along with destroying the stone’s patina, diminishing its historical beauty.
4. Household Cleaners & Soap
Household cleaners can contain harsh chemicals which chemically react with the stone, causing erosion, staining, or cracking. Chemicals in household soaps seep into porous surfaces, and may discolor, corrode, and deteriorate the stone over time. Soap residue can attract dirt and grime, making future cleaning more difficult. Even seemingly mild substances like vinegar can break down minerals within the stone. Always avoid household cleaners, as they are not designed for delicate stone materials. Stick to water or specially formulated headstone cleaners.
5. Abrasive Cleaning
Aggressive scrubbing with rough brushes can scratch and damage the stone surface. Even non-chemical cleaners can be destructive when paired with abrasive cleaning methods. Gentle brushing is key to preserving the integrity of stone.
Taking care of headstones requires careful consideration of cleaning methods and materials. By knowing what not use when cleaning stones, you avoid these common pitfalls and ensure that the stone remains intact and beautiful for generations to come. Choose gentler options, such as clean water, soft brushes, and specialized cleaners like D/2 Biological Solution. For expert care and professional cleaning, trust Stone’s Stones to restore and preserve the beauty of your loved ones’ memorials and historic monuments. Contact us today to learn more about our headstone cleaning services!
For more information, check out this great article by Gravestone Preservation.