Richmond has more pre-1930 brick than almost any American city its size. That is most of what makes the Fan, Church Hill, the Museum District and Ginter Park look the way they do — and it is also why hiring the wrong crew to clean brick here can cost you more than every wash that house will ever need.
We clean brick at the lowest pressure that actually works, we test before we commit, and we will tell you when a façade needs a restoration mason instead of a pressure washer.
📞 Call or Text (804) 571-7226 — most quotes go out the same day.
The lime mortar problem
Brick laid before roughly 1930 is bedded in soft lime mortar. That was deliberate, not primitive. Lime mortar is intentionally softer than the brick around it, so that when a wall moves — and every wall moves — the mortar takes the stress and sacrifices itself instead of cracking the brick. It is also vapour-permeable, letting moisture escape through the joints rather than through the face of the brick.
Modern Portland-cement mortar is the opposite: harder than much historic brick, and far less permeable.
Now put 3,000 PSI on a 130-year-old lime joint. You do not clean it — you excavate it. The mortar washes out in a slurry, sometimes an inch deep, and once the joints are open the wall takes on water, spalls the brick faces from the inside during freeze-thaw, and needs repointing. Repointing a Richmond row house façade runs into the thousands. It is the single most expensive mistake in exterior cleaning, and it is made constantly by crews who own a pressure washer and have never been told any of this.
There is a second trap on historic brick. Hand-made and early machine-made brick was fired with a harder, denser outer layer — the fire skin — protecting a softer core. Strip that skin off with abrasive blasting or excessive pressure and the brick begins absorbing water and decaying permanently. It cannot be put back.
How we approach it instead
- We identify what we are dealing with first. Age of the building, mortar type, condition of the joints, whether the brick has been painted or previously sandblasted.
- We test an inconspicuous section. Usually a rear or side elevation, low down. We start at the gentlest setting and step up only as far as needed.
- We use the lowest effective pressure. On sound historic masonry that often means soft-wash range — detergent doing the work, water only rinsing.
- We work with dwell time, not force. Letting a cleaning solution sit and do its job is almost always the answer where a homeowner expects more pressure to be.
- We stop and say so when the honest answer is that the wall needs a mason, not a wash.
What we remove from brick
- Green algae and black biological growth, worst on shaded and north-facing elevations
- General atmospheric grime and traffic soot
- Mildew on painted brick
- Clay splash and the orange staining at the water table
- The dark shadowing that collects under eaves and along the base of a wall
- Cobwebs, mud dauber nests and organic debris in mortar joints
Efflorescence — the white bloom
If your brick has a chalky white haze, that is efflorescence: soluble salts inside the masonry dissolving in moisture, migrating to the surface and crystallising as the water evaporates.
It cleans off readily. The honest part is what happens next. Efflorescence is a symptom — it means water is moving through the wall. Wash it away without addressing the water and it returns, often within a season. Common sources in Richmond homes are failed gutters and downspouts dumping against the wall, grade sloping toward the foundation, a missing or bridged damp-proof course, and sprinkler heads aimed at the brick.
We will clean it, and we will tell you where we think the water is coming from. Fixing that is usually a different trade, and we would rather you hear it from us than pay us twice.
Painted brick
Painted brick is everywhere in Richmond, and it is far more delicate than it looks. Paint on masonry fails from behind — moisture trapped in the wall pushes it off — so by the time you can see chalking or hairline flaking, adhesion is already gone across a wider area than is visible.
Wash a wall in that condition and paint will come off with the dirt. Not because the wash was too aggressive, but because it was only ever held on by habit. We inspect painted brick carefully first and tell you plainly what will happen.
What we will not do
- No sandblasting. Ever. It destroys the fire skin, permanently accelerates decay, and on a historic building it is straightforwardly vandalism.
- No high pressure on lime mortar. See above.
- No muriatic acid as a default. Acid has legitimate uses in masonry cleaning, in the right dilution, on the right substrate, with proper neutralisation. It is not a first move.
- No pretending a structural problem is a cleaning problem. Open joints, stepped cracking, spalling faces and bulging walls need a mason.
Common questions
How do I know whether my mortar is lime or Portland?
Rough guide: pre-1930 in Richmond is very likely lime, post-1950 very likely Portland, and 1930 to 1950 could be either. Lime mortar is noticeably softer — it can often be scratched with a key — and tends to be lighter in colour with visible sand. We check on site rather than guessing from the build date, because many older houses have been repointed at some point, sometimes with the wrong mortar.
Can you clean brick without touching the mortar?
Not literally — anything applied to a wall reaches the joints too. What we can do is keep pressure low enough that sound mortar is unaffected. If joints are already eroded or previously blasted, we will say so before starting.
Will you remove paint from brick?
No. Paint removal from masonry is a specialist restoration job involving chemical strippers and poultices, and doing it badly ruins brick faces. We clean painted brick; we do not strip it.
Is my brick veneer the same as historic brick?
No, and that is good news. Veneer on a mid-century or newer house is modern hard-fired brick in Portland mortar, and it tolerates a normal soft wash comfortably.
Do you work in the historic districts?
Yes — the Fan, Church Hill, Jackson Ward, the Museum District, Ginter Park, Windsor Farms and Monument Avenue. If your property is subject to architectural review, we are happy to describe our method in writing so you can clear it in advance.
Brick is the one surface where the wrong contractor costs real money. Call or text (804) 571-7226 and we will take a look before anyone turns a machine on.