Why I Photograph Every Marker Before I Touch It (Baseline Records)
headstone cleanning in Florida | headstone cleaning in Pennsylvania
Back in 2006, I got a call from a family in New Hampshire. They wanted me to clean their great-grandfather's granite obelisk—nothing fancy, just a nice polish and some moss removal. I showed up, took one quick look, and went straight to work with a soft brush and water. Didn't think much of it. Two hours later, I stepped back and realized I'd scrubbed off a faint, carved inscription on the base. Not the lettering—those were deep—but a thin, painted date that had been filled with gold leaf. It was 1874, the year he died. I'd washed it right off. The family was polite, but I saw the disappointment. That was the day I started taking a full set of baseline photos before I touch anything. Took me three tries to get a good system. Worth it. Now I shoot every marker—granite, marble, sandstone, limestone—before I even unroll my hose. This post is about why you should too, and how to do it right for your own headstone cleaning projects.
What Are Baseline Photos and Why Do They Matter?
Let me give you a real example. Last spring, I was cleaning a 1920s limestone marker for a church. The before photo showed a thin hairline crack running from the top edge down about six inches. I documented it. After cleaning with a soft brush and D/2, the crack was more visible because the dirt was gone. The family's cousin saw it and claimed I'd cracked the stone. I showed him the timestamped photo from my phone. He shut up. That one photo saved me a lawsuit, or at least a nasty argument. Baseline records are cheap insurance.
How to Take Proper Baseline Photos (My Method)
Here's what I do. I use a basic DSLR—a Canon Rebel I bought used for $200—but a modern smartphone works fine as long as you keep the lens clean. The key is: natural light, no flash. Flash washes out details and creates harsh shadows. I shoot in the morning or late afternoon when the sun is low and hits the face of the stone evenly. I take three angles: straight-on from about six feet away, then a close-up of the overall surface from two feet, and then macro shots of any damage or stains. I also take one wide shot showing the whole grave area—grass, neighboring markers, the lot—so I know where it sits. If there's a back side or sides with carving, I shoot those too. I store everything in a folder labeled with the plot number and date. For familys doing this at home: just use your phone camera, turn off HDR or auto-enhance, and make sure there's no filter. You want raw truth. A cloudy day is great—even light. Avoid direct noon sun; it washes out the stone. I always shoot at least 10 frames per marker. Never too many.
What to Look For and Record in Your Baseline Set
When you're taking those photos, focus on specific things. First, the obvious: cracks, chips, missing pieces, bullet holes (yes, I've seen those), graffiti. Second, biological stains—green from algae, black from lichen, orange from rust drips. Third, evidence of past repairs: epoxy blobs, cement patches, painted-over lettering. I once found a marker that had been slathered with a thick layer of white paint to hide a crack. The family didn't know. My baseline photo showed the paint was already peeling. Fourth, the condition of the base. Many markers settle or tilt. I record the angle with a small level and note it in a text file. Fifth, any loose flakes or spalls—those little pieces of stone that are about to fall off. If I see those on sandstone, I never scrub near them. I just apply D/2 with a sprayer and let it sit. Baseline records help you avoid making things worse. I've had clients say 'just scrub it hard' and I say 'look at this photo—see those flakes? That's why I'm gentle.'
How Baseline Photos Guide Your Cleaning Method
Once I of my baseline set, I decide what to use. If the photos show only dirt and no biological growth, I might use just water and a soft nylon brush. If there's black lichen or green algae, I reach for D/2 Biological Solution—it's a pH-neutral non-ionic cleaner that kills and lifts organics without damaging the stone. I never use harsh household chemicals like bleach or ammonia. They eat away at the stone's surface over time. Same for pressure washers—too aggressive, especially on marble or sandstone. My baseline photos tell me the stone's porosity. If it's a dense granite, I can use a little more pressure with a brush. If it's a soft limestone, I go easy. I also look for metal stains from old iron pins or brackets. Those need a special poultice, not scrubbing. The photos are my roadmap. Without them, I'm guessing. And guessing is how you wreck a 150-year-old marker.
Storing and Sharing Your Baseline Records
I keep my photos in three places: on my laptop, on an external hard drive, and in a cloud folder (Google Drive, Dropbox, whatever). I also send a copy to the family or the cemetary office. I label each photo with the marker ID and the date, like 'Smith_John_2024-04-15_01.jpg'. Simple. I also write a one-page note with observations—'crack at top, 2 inches left of center', 'lichen on north face', 'base tilted 3 degrees to east'. That note goes with the photos. For homeowners cleaning a family stone, I recommend emailing the photos to yourself and keeping them in a folder. You don't need fancy software. Just do it. I've had families come back a year later and ask 'did we miss a spot?' and I pull up the baseline and say 'no, that stain was already there.' It's a record of truth. And if you ever need to hire a professional, those baseline photos help them quote the job accurately. Everyone wins.
Frequently Asked Questions
Q: Do I need a fancy camera for baseline photos, or will my phone work?
A: Your phone works fine. I use a cheap DSLR, but I've seen great baseline shots from iPhones and Androids. Just turn off any filters or auto-enhance. Shoot in natural light without flash. Take at least 10 photos from different angles. The key is consistency—use the same lighting conditions for before and after shots so you can compare accurately.
Q: What if the headstone is already damaged? Should I still take baseline photos?
A: Absolutely. That's the whole point. Baseline photos prove the damage existed before you touched it. I've had families blame me for a crack that was there for decades. The photos saved me. Also, documenting existing damage helps you decide if cleaning is even safe. If the stone is flaking or crumbling, you might want to skip cleaning and just leave it alone.
Q: How many baseline photos should I take for one headstone?
A: At least 10. I take one wide shot of the whole grave area, one straight-on from six feet, one close-up of the main face, and then close-ups of any stains, cracks, or odd features. If the marker has writing on four sides, I shoot all sides. More is better. You can always delete extras later.
Q: Can I use baseline photos to choose the right cleaner?
A: Yes. That's a big part of why I take them. If the photos show black lichen or green algae, I use a pH-neutral non-ionic cleaner like D/2 Biological Solution. If it's just dirt and no biological growth, I might use water alone. If I see metal stains, I avoid bleach—that makes them worse. The photos help me see what I'm dealing with before I start.
Q: What's the worst mistake you've seen someone make because they didn't take baseline photos?
A: A few years ago, a well-meaning relative pressure-washed a family's marble marker from the 1800s. The stone was already soft from acid rain over the years. The pressure washer blasted off the surface, erasing a carved name. They had no before photo. The family tried to sue the cemetery, but without proof, nothing happened. The stone is ruined forever. Baseline photos wouldn't have stopped the pressure washing, but they would of shown the court exactly what was lost. Don't be that person.