Cleaning and Caring for Old Brick Grave Borders and Edging

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I remember my first job with brick grave borders clear as day, it was a little cemetary outside of Nashik, back in 2005. The family had called me in because the brick edging around their grandparents' plot was crumbling and covered in this thick, green-black crust. Looked like a moldy loaf of bread. I figured I'd just blast it with a pressure washer, quick and easy. Big mistake. I blew mortar out of the joints like it was wet sand. Took me three days to repoint that whole border. The family was patient, but I felt like a fool. Learned a hard lesson that week: brick is tougher than headstone marble, but it's still old and porous. Treat it gentle, or you'll be fixing more than you clean.

Brick grave borders and edging take a beating. Rain splashes dirt up on them. Grass clippings stick. Moss and lichen love the damp corners. And because they're low to the ground, people forget about them until they look like a pile of old bricks in a swamp. But with the right approach, you can bring them back without wrecking the mortar or the bricks themselves. Let me walk you through what actually works — stuff I've tested on dozens of plots over twenty years. No gimmicks. Just good, slow care.

Start With a Dry Assessment — Don't Touch Anything Yet

Before you even wet a sponge, walk the whole border. Look for loose bricks, cracked mortar, or places where the edging has shifted. I carry a small trowel and tap each brick gently. If it sounds hollow, the mortar underneath is gone. Mark those spots with chalk. You don't want to scrub a loose brick and knock it out of place. Also check what kind of brick you're dealing with. Old handmade bricks are softer than modern machine-pressed ones. They'll crumble if you get aggressive. One time I saw a guy use a wire brush on a 1920s brick border. Took the face right off. Looked like a cheese grater hit it. So go slow. Note any efflorescence — that white powdery salt stuff. That's a sign of moisture trapped in the brick. It'll come off with cleaning, but you need to address drainage too, or it'll come back.

Gather the Right Tools and Cleaners

Here's what I use: a stiff nylon brush (not wire, never wire), a bucket of clean water, a spray bottle, and a pH-neutral cleaner like D/2 Biological Solution. That's it. No bleach, no muriatic acid, no harsh household chemicals. Those will eat the mortar and stain the brick permanently. I learned that the hard way on a job in Pune — used a generic 'mold remover' from the market, and it turned the bricks orange. Had to replace half the border. D/2 is my go-to because it kills biological growth without damaging the brick or mortar. It's a bit pricey, but a quart goes a long way. You can also use a mild dish soap like Dawn if D/2 isn't available, but only on bricks that aren't too fragile. For really stubborn lichen, I'll mix a little white vinegar with water (1:10 ratio), but only on brick — never on stone. And always test on a hidden spot first. Patience is cheaper than replacement.

The Actual Cleaning Process — Step by Step

Okay, here's the routine. First, wet the bricks down with a hose. This stops the cleaner from drying too fast and staining. Then spray D/2 generously on the border. Let it sit for 10-15 minutes. Don't let it dry out — if it does, re-wet it. Then scrub with the nylon brush, working in small sections. Circular motions, but light pressure. You're lifting grime, not sanding the brick. Rinse with clean water from a hose or a watering can. Don't use a pressure washer — even on low setting it can blow out old mortar. I've seen it happen. Repeat if needed. For heavy moss, you might need two or three applications. One cemetery job had bricks that hadn't been cleaned since 1978. Took me four passes. But the color came back — that deep orange-red underneath all the green. Worth every minute. After rinsing, let the border dry for a day before you do any repointing. Wet mortar won't bond right.

Repointing Loose or Missing Mortar

Once the bricks are clean and dry, check for gaps. Mix a small batch of mortar — use a Type N or Type O mix for old brick. Type N is good for most jobs. Type O is softer, better for very old, soft bricks. The mix should be like peanut butter — not too wet. Pack it into the joints with a pointing trowel or a grout bag. I use a grout bag for speed. Push the mortar deep into the joint, then strike it with a jointer tool to match the original profile. Let it cure for 48 hours, keep it damp by misting with water. If you skip that, the mortar cracks. I know, because I did that on my first repointing job. Came back a week later and it looked like a spiderweb. Had to redo it. Learn from my laziness. Also, don't use modern Portland cement on old bricks. It's too hard and will cause the bricks to spall. Stick with lime-based mortar.

Ongoing Care — Keep It Simple

You don't need to deep-clean brick borders every year. I tell familys to do a gentle rinse with a hose once a season to knock off dirt and pollen. In monsoon season, check for standing water. Brick edging can trap moisture, leading to moss and frost damage in colder areas. If you see moss starting, spot-treat with D/2 right away — don't let it spread. Also, trim grass away from the border with shears, not a string trimmer. A weed whacker will chip the brick edges. I've seen it a hundred times. And if a brick cracks or chips, replace it sooner rather than later. A missing brick lets water into the base, and then the whole border shifts. I keep a few spare old bricks in my truck for just that reason. You can find matching ones at salvage yards sometimes. It's not glamorous work, but a clean, solid border makes the whole grave look respected. That's what matters.

Frequently Asked Questions

Q: Can I use a pressure washer on brick grave borders if I'm really careful?

A: I'd say no. Even on low pressure, a pressure washer can blast out old mortar that's already weak. I've had clients try it and end up with a border that looks like Swiss cheese. Stick with a hose and a brush. It takes longer, but you won't be repointing every joint afterwards.

Q: What's the best way to remove white salt stains (efflorescence) from brick edging?

A: Efflorescence is just salt that's been pushed out by moisture. A stiff dry brush can knock off the loose stuff. Then wash with D/2 or a mild vinegar solution (1 part vinegar to 10 parts water). But the real fix is improving drainage so water doesn't sit behind the bricks. Otherwise, it'll keep coming back.

Q: My brick border has a layer of black mold that won't come off with soap. What should I do?

A: That's likely lichen or algae, not just mold. D/2 Biological Solution is made for that. Spray it on, let it sit for 15-20 minutes, scrub with a nylon brush, and rinse. For really thick growth, you might need two applications. Avoid bleach — it'll kill the lichen but can stain the brick and harm nearby plants or grass.

Q: How do I match old mortar color when repointing a historic brick border?

A: Matching color is tricky. I buy white or gray lime mortar and add pigments (like iron oxide for red tones) to match the original. Test a small patch first. You can also take a sample of the old mortar to a masonry supply shop. They can help you mix a custom batch. It's worth the extra effort — a mismatched mortar joint stands out like a sore thumb.

Q: Is it okay to seal brick grave borders after cleaning?

A: I don't recommend it. Sealers trap moisture inside the brick, and when that moisture freezes or heats up, it can crack the brick from the inside. Old bricks need to breathe. If you want to protect them, just keep them clean and well-drained. That's all they really need.