Unlacquered brass taps are chosen precisely because they do not remain the same. Unlike sealed or plated finishes, the brass surface is left exposed, allowing it to react naturally with its surroundings. Over time, this creates depth, variation and warmth — but it can also lead to marks appearing.
For those new to unlacquered brass, these changes can sometimes cause concern. A tap may darken in places, develop tonal patches or show colour shifts that feel unexpected. In most cases, this is not a fault with the tap. It is simply the natural behaviour of the material in response to its environment.
Understanding why these marks appear helps set realistic expectations and allows you to decide how you want your brassware to age within your home.
What Causes Marks on Unlacquered Brass Taps?
Unlacquered brass is a living surface. Brass is an alloy made from copper and zinc, and when it is left uncoated, the surface remains open to moisture, air and touch. This openness is what allows a patina to form — the very quality that makes unlacquered brass so desirable — but it also means the surface responds quickly to external factors.
Every home is different. Water hardness, humidity, temperature and frequency of use all influence how brass changes over time. A tap in a busy family kitchen will age differently to one in a guest bathroom, and a coastal property will produce different results than a home inland - You can explore our full range of unlacquered brass taps here.
None of these outcomes are wrong — they are simply individual.
How Water Quality Affects Brass
One of the most common causes of marks on unlacquered brass taps is water quality. Water contains minerals that vary depending on location, and when water dries on the surface of brass, those minerals can be left behind. Learn more about how unlacquered brass behaves over time in our detailed guide.
Ferruginous Water (Iron Content)
In areas where water contains higher iron levels, reddish or brown marks can develop over time. These often appear around the base of taps or at the spout where water pools. These marks come from the water itself, not the brass, and do not affect performance.
Sulfurous Water
Some water supplies contain sulfur compounds which can react with copper-based metals. This may produce green or blue tones on the surface. While unusual at first glance, this is a well-documented natural reaction and often softens into the wider patina over time.
Hard Water
Hard water contains calcium and magnesium. These minerals can leave pale, chalky marks if allowed to build up. Regular gentle cleaning helps keep the surface looking even.
The Impact of Cleaning Products on Brass
Many household cleaning products contain acids designed to remove limescale or grease. On sealed finishes this is usually harmless, but on unlacquered brass, acidic products can cause sudden colour changes or dull patches.
It is always best to avoid spraying cleaners directly onto brass taps. Clean surrounding areas first, then wipe the tap gently with a soft cloth.
Even natural products such as vinegar or lemon juice can mark the surface if left sitting on the metal.
Natural Wear from Touch and Use
Even without challenging water conditions, unlacquered brass changes through daily use. Areas touched frequently tend to stay lighter because natural oils from hands slow oxidation. Areas exposed to moisture or left untouched often darken more quickly.
Over time, this creates contrast and character across the tap. Many people consider this one of the most appealing aspects of unlacquered brass — the tap begins to reflect how it is used rather than looking identical to every other tap.
Day-to-Day Care for Unlacquered Brass Taps
Caring for brass does not require strict routines - we cover brass care in more detail in our brass care guide. Simple habits make the biggest difference:
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Clean with mild soap and a soft cloth
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Dry the tap after use to reduce water marks
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Avoid abrasive pads and strong cleaners
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Polish occasionally only if you prefer a brighter finish
There is no right or wrong approach — it depends on how you want the brass to age.
What to Do If Marks Build Up
In some homes, marks may build up unevenly, especially in areas with challenging water conditions. Light polishing can help refresh the surface and reset the patina. From that point, the brass will begin ageing again naturally.
Because these taps are made from solid brass, refreshing the surface does not affect the material beneath.
Professional Re-Polishing Service
For deeper marks, scratches or heavy patina, Francone Bespoke Taps offers a professional re-polishing service. This is assessed individually and carried out using specialist tools. Charges apply, and not all items may be suitable, but our team can advise on what result can be achieved.
Frequently Asked Questions
Are marks on unlacquered brass a fault?
No. Marks are a normal part of how unlacquered brass behaves. They are not defects.
Will marks affect the performance of the tap?
No. These changes are purely visual. The internal components and strength of the brass are not affected.
Can I stop marks from forming altogether?
No. Unlacquered brass is designed to change. Cleaning and drying can reduce marks, but the surface will always evolve.
Is it safe to polish brass taps regularly?
Light polishing is fine, but frequent heavy polishing is not recommended. It is best done occasionally.
Why does my tap look different to someone else’s of the same finish?
Water quality, use and environment all affect how brass ages. This variation is expected.
Should I be worried if the colour changes quickly?
Not necessarily. Some environments cause faster patina. This does not mean anything is wrong.
Final Thoughts
Unlacquered brass taps are chosen because they evolve. Marks, tonal shifts and patina are part of the story the metal tells over time. By understanding why these changes happen and how to care for the surface, you can allow your brassware to age in a way that feels right for your home.
For many, this living quality is exactly what makes unlacquered brass such a rewarding and characterful choice.
Explore our full range of unlacquered brass taps here.
Learn more about caring for brass finishes in our guide.
