Lime bloom on brickwork
A white, chalky haze on brickwork — often called lime bloom or efflorescence — occurs when lime salts are drawn to the surface by moisture and crystallise there. Painting straight over it without pre-treatment results in poor adhesion and a finish that gets dirty again quickly.

Cause
Moisture in new or porous brickwork dissolves lime from the mortar. As the wall dries out, that lime crystallises on the surface into a white haze.
How to recognise it
- A white, powdery or crystalline layer on the brickwork
- The bloom becomes more visible after rain and then dries white again
- Often concentrated near joints or on relatively new brickwork
What's the risk?
- Poor paint adhesion on an untreated, lime-bearing surface
- Lime bloom can return if the underlying moisture source isn't addressed
- Visually unappealing and a sign of moisture in the brickwork
The solution
We remove the lime bloom mechanically or chemically, depending on severity, and let the brickwork dry properly. Only then do we apply a suitable paint or coating system.
For structurally damp walls, we also look at the cause, so the bloom doesn't simply return over time.
When painting is enough
Once the lime bloom has been removed and the brickwork has dried out properly, painting can proceed with a suitable, vapour-open system.
When repair is needed
For persistently damp walls or structural moisture problems, the moisture source needs to be resolved first before painting makes sense.
How Painting Company solves it
- Assessment of the severity and likely cause of the bloom
- Mechanical or chemical removal of the lime deposit
- Drying and pre-treating the brickwork
- Finishing with a vapour-open, adhesive paint system
Preventing lime bloom on brickwork: practical maintenance
The best way to prevent lime bloom on brickwork is to regularly check the spots where the problem most often starts, and fix small defects straight away instead of waiting. Moisture in new or porous brickwork dissolves lime from the mortar. As the wall dries out, that lime crystallises on the surface into a white haze.
A fixed maintenance cycle — for example periodically touching up vulnerable spots such as sealant joints, corners and sills — is often cheaper than waiting until a problem shows up in full. Not sure whether your situation needs attention? A free, no-obligation inspection gives you clarity.
Why choose Painting Company
Painting Company has now completed over 1374 projects and serves more than 261 VvE's, with a team of 14+ permanent painters and an average Google rating of 4.9. With lime bloom on brickwork, it's not just about the visible paint layer but also the structural repair underneath — we have daily experience with exactly that.
As part of CrumBouw and GoedkoopSteigerHuren.nl, we can combine this with facade maintenance and, if the situation calls for it, scaffolding — all through a single point of contact. Request a free, no-obligation quote, and we'll think it through with you.
Frequently asked questions about lime bloom on brickwork
Can I just paint over lime bloom?
No. Without removing the lime deposit first, the paint adheres poorly and the white haze often bleeds back through the new layer within a short time.
Does lime bloom disappear on its own?
On new brickwork it sometimes fades over time, but for a crisp, lasting result, a pre-treatment before painting is recommended.
Can I fix lime bloom on brickwork myself, or is this a job for a professional?
Small, surface-level cases can sometimes be touched up yourself, but if you're unsure we'd advise against it. We remove the lime bloom mechanically or chemically, depending on severity, and let the brickwork dry properly. Only then do we apply a suitable paint or coating system. Repairs done incorrectly often end up costing more in the long run than calling a professional painter straight away.
How long does it take to fix lime bloom on brickwork?
That depends a lot on the extent and accessibility of the spot. For a limited, localised case the work is often done within a day or a few days; larger areas take longer. During the free assessment we give a concrete estimate for your situation.
What does it cost to fix lime bloom on brickwork?
That varies by situation — the extent, the accessibility and whether painting is also needed all play a role. We give a clear quote after a free, no-obligation assessment, so you know exactly where you stand beforehand.
What happens if I ignore lime bloom on brickwork?
Poor paint adhesion on an untreated, lime-bearing surface The longer you wait, the bigger the eventual repair — and the cost that comes with it — tends to be.
What's the best time of year to have this addressed?
We prefer to carry out exterior work in dry weather at a moderate temperature, usually from spring to autumn. Repairing acute damage — such as cutting out rotten wood — can however often be done year-round, so the problem doesn't get worse while you wait for better weather.
How do I stop lime bloom on brickwork coming back after it's fixed?
We address not just the visible symptom but also the underlying cause — moisture in new or porous brickwork dissolves lime from the mortar. As the wall dries out, that lime crystallises on the surface into a white haze. Periodic maintenance also helps: touching up small damage in time prevents a small problem growing back into a bigger repair.
What materials and techniques do you use for this?
We work with professional materials and paint systems matched to the surface and the load it faces — not standard DIY-store paint. Where needed we combine that with specialised wood repair systems or primers matched to the specific cause.
Do you offer a guarantee on the repair work?
We always discuss guarantee terms upfront and set them out clearly in the quote, so you know exactly what to expect before we start.
Does this fall under our VvE's regular maintenance?
That depends on your VvE's long-term maintenance plan. We're happy to think this through with you: we assess the situation and give advice you can put to the board or the general meeting.
Is lime bloom on brickwork worse on older or listed buildings?
This comes up more often on older properties, simply because the woodwork and facades have been exposed to the weather for longer and often already carry several layers of paint. On listed-building details we work with extra care to preserve the original profiling and appearance.
How do I spot early signs, before it's visibly bad?
A white, powdery or crystalline layer on the brickwork
Is a visual inspection enough, or is more investigation needed?
In most cases a thorough visual inspection by a professional painter is enough to determine the extent. If there's doubt about the underlying structure, we look a little deeper, for example by gently testing whether the wood can still bear weight.
Do you also work on commercial buildings and real estate, not just homes?
Yes. We fix lime bloom on brickwork for private homes, VvE's and real estate such as commercial buildings and apartment blocks. The approach is similar, though larger properties are often planned in phases.
Can lime bloom on brickwork affect the value of my home?
Visible damage to window frames, facades or woodwork can create a negative impression during a sale or valuation and raise questions about deferred maintenance. Addressing it in time avoids that discussion and keeps the property looking well cared for.
Do I need to prepare anything before you come round?
No, that's not necessary. Just make sure the spot is reasonably accessible; we handle everything else, from inspection to execution.
Do you use scaffolding if the spot is high up or hard to reach?
If the situation calls for it, we arrange that through GoedkoopSteigerHuren.nl, part of the same organisation as Painting Company. We combine that into a single request, which saves coordination steps.
How quickly can you come round for an assessment?
We respond to requests quickly and schedule the assessment as soon as possible in consultation with you. Request a free, no-obligation quote and we'll get in touch.
What's the difference between touching up and a full repair?
Once the lime bloom has been removed and the brickwork has dried out properly, painting can proceed with a suitable, vapour-open system. For persistently damp walls or structural moisture problems, the moisture source needs to be resolved first before painting makes sense.
Ready for your next project?
Request a free, no-obligation quote today. We get in touch, think along with you and deliver the best paintwork for your home, VvE or property.