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Calcium deposit on Cars – Multilevel Car Park

Water Stains On Cars From Leaking Ceiling Slab


Image: The sight of calthemite is a visual sign that calcium is being leached from the concrete structure and the concrete is gradually degrading.


Remedial waterproofing and concrete repairs are a fact of life for any organisation whose assets include sizable concrete structures.

We typically see leaking concrete slab ceilings in multilevel car parks. Undercover or underground car parks are especially prone to water seeping through the concrete.


Whether the source of water is from a leaking crack or a joint/pipe penetration, the seepage will carry calcium and/or lime with it, through to the surface of the concrete.


Unprotected assets such as cars, may be at risk of damage by the calcium deposits dripping onto the cars and etching into the paintwork. The problem with water seepage dripping onto cars is that the minerals that etch into the surface of the car’s paint finish, make it hard to remove with a simple wash. This is especially the case if the water spots are not addressed immediately after it has happened and/or if the car is exposed to the hot sun before washing it off.


Image: Unprotected assets such as cars, may be at risk of damage by the calcium deposits dripping onto the car and etching into the paintwork.


Concrete Deterioration

The water and the mineral salts can cause serious damage to the property as the concrete deteriorates. Timely preventative maintenance of the concrete is the key to the most cost-effective way to protect the concrete from serious deterioration. Waiting for the concrete to be spalling will lead to extensive repairs with associated expenses.

As soon as you see the symptoms such as a crack, seepage or a small rust stain, it is best to get an expert in to inspect it. The small rust stain may just be a simple thing like a rusting steel tie, or it could be more comprehensive such as rusting reinforcement steel.

Over time, and if not treated, concrete cancer can develop, and consequently weaken the integrity and safety of the building. With spalling concrete overhead, there is a heightened risk of injury to the public as pieces of concrete may fall off the slab ceiling and hit a person.


Image: Spalling concrete requiring concrete repair work.

Here is a link to our page with information about how to repair concrete cancer: https://waterstopsolutions.com.au/concrete-cancer-repair-in-multilevel-underground-car-park-goldcoast-brisbane-sydney/



Image: Drip trays can accelerate and hide symptoms of concrete cancer.


Band-aid fixes, like drip trays, can accelerate and hide the symptoms of concrete cancer. Inevitably, sporadic ongoing repair only leads to asset deterioration, a shorter asset lifetime and increased long-term capital cost.

Waterstop Solutions has the expertise to fix the problem of water leaking onto vehicles in degrading structures. We use a moisture-reactive, flexible, durable polyurethane and inject it under high pressure, deep into the slab or source of water entry. Having a reputation built upon countless successful repair projects, Waterstop Solutions’ processes and technologies ensure the durability of clients’ assets for years to come.


Image: High pressure leak sealing injection of polyurethane. Results in a permanent and flexible seal deep inside the concrete slab. By Waterstop Solutions.


Contact us today!

If you have any questions regarding building defects such as cracked concrete, concrete deterioration and water ingress/seepage, we would love to hear from you!


Good maintenance begins with a proactive approach to maintain, keep, preserve and protect a building. 

Remember that seepage/water ingress into areas such as balconies, basements, concrete roofs, car parks and retaining walls, should not be ignored – call a remedial waterproofing professional today for an assessment to provide you with the best solution for your situation.

At Waterstop Solutions, we carry out a wide range of remedial works to concrete structures post-construction stage in Brisbane, Gold Coast, Sunshine Coast, Sydney and outlying areas in Queensland and New South Wales.

Equipped with major civil works experience, we can quickly determine the best approach to rectify all seepage and concrete deterioration issues.




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