Over time, headstones and memorials can naturally weather, gather dirt or develop biological growth, particularly in Wales where the climate is damp, coastal in many areas and seasonally changeable. Understanding how to gently maintain a headstone helps preserve its appearance, protects the inscription and ensures the memorial remains a respectful and dignified place to visit.
At Arthur Peake and Sons, we know how important it is for families to feel confident when tending to a graveside. This guide has been written to provide clear, practical information about caring for different types of headstones and memorials, with advice suitable for both new and older graves.
Understanding The Type Of Memorial You Are Caring For
Before carrying out any cleaning or maintenance, it is important to know what type of material the headstone is made from. Each stone responds differently to water, cleaning products and weather conditions, so identifying the material helps you choose the safest method.
Granite
Granite is one of the most durable materials used in modern memorials. It is resistant to staining, less porous than other stones and generally easier to clean. Polished granite has a smooth, shiny surface that repels water, while unpolished granite has a more textured finish.
Marble
Marble is softer and more porous than granite. Over time, rain, frost and pollution can cause it to dull, and it may develop a slightly sugary texture on the surface. Because of its softness, marble must always be cleaned gently with non acidic products.
Slate
Slate is resilient and widely used across Wales due to its natural availability. It holds up well in wet conditions but can delaminate if exposed to harsh scrubbing or forceful cleaning.
Limestone & Sandstone
These materials are more porous and can absorb water easily. They are vulnerable to weathering, particularly in damp areas, and may develop surface flaking if scrubbed too firmly or exposed to strong chemicals.
Additional Memorial Types
Many graves also include kerb sets, vases, plaques, books, children’s memorials and additional decorative pieces. While most are made from the same core materials listed above, always test any cleaning method on a small, discreet area first.
How The Welsh Climate Affects Memorials
Wales’ weather naturally contributes to biological growth and surface ageing. Recognising these common issues makes it easier to maintain the memorial safely.
- Frequent rainfall can encourage the growth of moss, algae and lichen.
- Frost can cause micro cracks in softer stones.
- Coastal areas may experience salt deposits on the surface.
- Shade from trees can increase moisture retention, leading to green or black algae patches.
- Strong winds may bring debris that settles in engravings and joints.
These factors make occasional light maintenance helpful in slowing long term wear without the need for harsh products.
General Cleaning Advice For Most Headstones
A gentle approach is always best. In many cases, a soft brush and clean water are all that is required. Abrasive tools or chemical cleaners can cause irreversible damage to the stone or its inscription.
Tools & Items You May Need
Use these sparingly and only as needed:
- A soft bristle brush
- A bucket of clean water
- A spray bottle with water for delicate areas
- A non metallic scraper for loose moss
- A soft cloth or sponge
Avoid:
- Wire brushes
- Pressure washers
- Bleach or acidic cleaners
- Household detergents
- Abrasive pads
These items can permanently mark or erode the stone surface over time.
Cleaning Granite
Granite is the easiest to clean and responds well to water and gentle scrubbing. Most marks lift with minimal effort. Avoid ammonia based cleaners on coloured granite, as they may dull the shine.
Cleaning Marble
Because marble is calcium based, any acidic substance can etch the surface. Use only water, a soft brush and a light touch. If algae is present, gentle persistence is safer than strong chemicals.
Cleaning Slate
Slate should be cleaned gently with soft tools. Scrubbing too hard can cause layers to lift. Slate memorials often regain their dark, clean appearance naturally after rainfall once surface debris is removed.
Cleaning Limestone & Sandstone
Porous stones absorb water and can stain easily. Always keep water use minimal and avoid prolonged soaking. Light brushing is usually enough for general maintenance.
Seasonal Maintenance & Weathering Considerations
A few light cleaning sessions each year can help keep the memorial looking cared for without risking damage.
- Spring is ideal for removing winter moss and algae.
- Summer allows stones to dry quickly, helping you assess any new changes.
- Autumn is a good time to clear leaves, debris and tree sap.
- Winter requires caution, as frost can make stones fragile and slippery.
Regular visits also give you the opportunity to check the stability of the memorial, particularly after storms or high winds.
When To Contact Our Monumental Masonry Team
While light maintenance can usually be carried out by family members, certain situations need professional attention to protect the safety and integrity of the memorial.
You should contact our monumental masonry team if:
- The memorial has become loose or unstable.
- There are cracks or chips forming on the surface.
- Inscriptions are becoming difficult to read.
- The stone is heavily stained or damaged.
- The memorial needs re levelling or restoration.
Attempting major repairs yourself can be unsafe, as memorials are extremely heavy and require professional equipment.
Speak To Our Team
If you would like advice, or if the memorial requires professional cleaning, repairs or restoration, Arthur Peake and Sons are here to help. Our monumental masonry team can assist with all aspects of memorial care, offering guidance and support whenever you need it.