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The 4 Methods of Waterproofing Concrete Sydney, Explained


If you’re building new structures or protecting existing ones, waterproofing concrete in Sydney is something that you should consider. Water damage is one of the leading causes of concrete decay wherever you look. It’s a serious issue, but one you can prevent.

Concrete waterproofing is a surefire way of preventing your homes from deteriorating. There are businesses that will provide this service for amazing prices. But how do they do it?

The Different Types of Concrete Waterproofing

The idea behind concrete waterproofing is simple. To prevent cracks or fractures, you add a water-resistant layer on your exposed surfaces.

There are different ways to go about this. Normally, commercial services provide the following types of waterproofing services.

1.   Concrete Sealing

Most waterproofing and restoration methods involve the use of chemical sealers. These are materials which form a protective layer on your concrete structures. They can either stay on the surface or offer deeper water resistance by penetrating through the pores.

Sealers are a popular option because they are readily available and maintain the looks of your building. Plus, they are easy to apply and usually offer immense protection against water damage.

Generally, homeowners might have to consider routine sealing for lasting results. The downside is that some sealers can be hazardous, and you should avoid being in contact with them for a long.

2.   Cementitious Coatings

Cementitious waterproofing is a type of treatment that provides a long-lasting solution to waterproofing your concrete. It involves injecting cement into the pores of your concrete to seal them off, making it watertight.

This method is often used for retaining walls, footings and basements, as well as other applications where waterproofing is needed. It’s not always as durable as sealants, but it can offer a level of breathability to your surfaces.

3.   Crystal-Based Waterproofing

This method works by forming a layer of insoluble crystals on the surface of the concrete, which then forms a barrier against water penetration. The results of this are more permanent than many sealers.

These crystals react with water and expand, forming a protective layer that seals off any cracks or voids in your concrete and prevents them from getting any bigger. They also form a barrier against further damage from water penetration.

4.   Membrane Waterproofing

This technique involves applying a protective membrane layer over the top surface of your concrete. This layer creates a barrier between your concrete and any moisture sources in the environment, such as rain or snowfall. The layer also prevents any minerals or chemicals from entering your concrete through cracks in its surface.

These membranes are available as liquid applications or sheet membranes. Membrane waterproofing is one of the most popular methods because it’s affordable, easy to install and works well with many types of surfaces, even ones that are already damaged or deteriorating.

The Importance of Concrete Waterproofing

For homeowners, waterproofing concrete structures in Sydney offers practical benefits. The following are the main reasons why you too should consider them.

  • Waterproofing adds longevity to your building or home
  • It restores the aesthetics of your concrete facades
  • It helps keep your house prices at favourable levels
  • It protects your investment from getting damaged
  • It is cost-effective in the long run
  • You can waterproof the interior as well as the exterior of your home


Like anything in life, it’s important to look for a waterproofing solution that will suit your needs. Whether you’re looking for protection from major water damage, unsightly cracks, or mould and mildew. You need to assess your needs carefully.

Ultimately, waterproofing your concrete in Sydney is an important step in ensuring that you stay stress-free for longer.

We hope this article has helped you better understand waterproofing concrete better. Now you know the different methods for safeguarding your home against decaying foundations. With this information, judging which solutions will suit you best becomes easier.

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