GraveClean vs D2: Which Is Better for Headstone Cleaning?

GraveClean is usually the better choice for headstone cleaning when the memorial has black spotting, lichen, moss, or years of built-up staining. While D2 is a recognised biological cleaner for masonry and natural stone, GraveClean is designed specifically for memorial care, with a more targeted approach to the kind of staining commonly found on headstones.

That difference matters. A neglected memorial often needs more than a general clean. It needs a product that can deal with stubborn biological growth properly, then clean the wider surface without relying on harsh methods or excessive scrubbing. That is where GraveClean has the advantage.

In this guide, we compare GraveClean and D2 side by side, explain where D2 still has a place, and show why GraveClean is the stronger fit for most headstones that need a more thorough and controlled clean.

Quick answer

Choose D2 if:

• the stone is stable

• the staining is mostly general biological growth

• you are happy to follow a method with contact time, brushing and rinsing

Choose GraveClean if:

• black spotting or lichen is clearly visible

• the memorial has mixed staining

• the stone has not been cleaned in years

• you want a more controlled two-stage process

At a glance

Start with the stone, not the product

Before comparing cleaners, check the memorial itself. If the stone is flaking, powdering, cracked, loose, or unstable, do not push ahead with a DIY clean. The National Park Service guidance on cleaning grave markers advises using the gentlest means possible and warns that even careful cleaning can accelerate deterioration. It also says to use soft brushes and gentle cleaners only, and never wire brushes, power washers, or harsh cleaners such as bleach.

That matters because people often blame the product when the real issue is stone condition, overworking the surface, or trying to force fast results on a fragile memorial. GraveClean covers the same point in its own guide on how to clean a gravestone safely and when to stop, which is worth reading before any DIY clean.

What are you actually trying to remove?

Most headstones have one or more of these:

• Surface grime: weather film, dirt, bird mess, general dulling

• Green growth: algae and moss

• Black spotting and lichen: usually the most stubborn category

That last group is where broad one-step cleaners often fall short. The stone may look fresher overall, but the darkest biological staining can remain embedded in the surface.

This is exactly where GraveClean separates the job. Its Black Spot Remover for Headstones is positioned as a first-stage treatment for black algae, lichen, moss and long-term organic build-up, rather than expecting a general cleaner to handle everything in one pass.

What D2 is designed to do

D2 is a legitimate cleaner. According to the Cornish Lime product page, it is biodegradable and used on buildings, monuments, sculptures and headstones to remove mould, algae, mildew, lichens and air pollutant staining. The same page says it is suitable for natural stone including marble, granite, limestone, sandstone and slate.

Its application method is fairly clear. For immediate results, Cornish Lime says to use D2 undiluted, allow 10 to 15 minutes of contact time, keep the surface wet, scrub with a soft nylon or natural bristle brush, then rinse thoroughly with clean water. It also says results may continue to develop over two to three days. There is also a no-scrub/no-rinse method where results may develop over one week to one month, depending on severity.

That tells you what D2 is in practice: a broad masonry cleaner with a process attached. It can work well when the staining fits the job and the user is willing to follow the method carefully.

Where D2 tends to fall short on headstones

The issue is not that D2 is poor. The issue is that many cemetery cleans are not simple.

A neglected memorial often has:

• black spotting or lichen in the surface

• green growth around edges and lettering

• general weathering film across the face of the stone

At that point, one cleaner can improve the overall appearance without properly resolving the worst of the biological staining. That is where people start scrubbing harder or repeating applications too aggressively, which is exactly what you want to avoid on memorial stone. Again, the National Park Service guidance is useful here because it keeps the emphasis on stone safety rather than chasing a cosmetic result too aggressively.

Where GraveClean differs

GraveClean’s product setup is more specific to the actual staining pattern seen on headstones.

The Black Spot Remover for Headstones is described as being specially formulated to tackle black algae, lichen, moss and organic growth that has built up over years. The product page positions it as a restorative first step before using a finishing cleaner for longer-term care.

The Headstone Cleaner Stone Cleaning Solution is described as a pH-neutral headstone cleaner designed specifically for natural stone. GraveClean says it is biodegradable, solvent-free, contains no bleach or harsh chemicals, and leaves behind a protective layer to slow future staining.

The Headstone Cleaning Bundle combines both stages and is aimed at visible black or green staining and memorials that have not been cleaned in five years or more.

That is the strongest case for GraveClean in this comparison. It is not just another cleaner. It is a memorial-care workflow. GraveClean’s launch article for the professional headstone cleaner makes that point clearly, explaining that the DIY range was developed from the same professional approach used by its technicians in the field.

Which should you choose?

Use this as the practical chooser.

Choose D2 if:

• the staining is mostly general biological growth

• the memorial is stable and in fair condition

• you are comfortable following the application method properly

• you are happy with results that may continue developing after the visit

Choose GraveClean if:

• black spotting or lichen is visible

• the memorial has mixed staining rather than one simple issue

• the stone has not been cleaned in years

• you want a staged process designed around headstone care rather than a broad masonry clean

If the second list sounds closer to the stone in front of you, the safest starting point is usually the Black Spot Remover, followed by the Headstone Cleaner Stone Cleaning Solution, or simply using the Headstone Cleaning Bundle if you want the two-step process in one kit.

Safe method on the day

Whichever product you use, keep the method conservative:

• wet the stone first

• keep it wet while you work

• use soft brushes only

• work top to bottom

• rinse thoroughly

• stop if the stone starts shedding material or feels unstable

That baseline matches the National Park Service’s grave marker cleaning guidance and reduces the chance of doing permanent damage while trying to improve appearance. If you want a more headstone-specific version of the same advice, GraveClean’s guide on how to clean a gravestone safely and when to stop is the most natural internal follow-on read.

Bottom line

For most headstones with black spotting, lichen, moss, or years of built-up staining, GraveClean is the better choice because it is designed specifically for memorial care and follows a more targeted process for stubborn biological growth. If the memorial needs a more thorough clean rather than a light surface refresh, the most relevant product route is the Headstone Cleaning Bundle, or the Black Spot Remover if the staining is clearly localised and biological.