How Do You Waterproof Masonry Walls?

DATE: Dec, 12   COMMENTS: 0   AUTHOR: Allan Azarola

When masonry walls decay, they can lose their ability to repel water fast. When masonry loses its waterproofing, rising damp and penetrative damp may start to damage your property immediately.

Keeping your masonry waterproofing completely sealed is critical for any homeowner. If you’re trying to figure out how to keep your house damp-free all year, here are some tips on how to properly waterproof your masonry.

What Is Masonry Waterproofing?

Masonry waterproofing refers to the process of effectively sealing masonry walls, both brick and concrete, to create an impermeable barrier against moisture and water.

While there are several different masonry waterproofing systems that homeowners may have installed, the objective of each is to keep water off the outside and your home dries on the inside, no matter how hard it’s raining.

Masonry waterproofing protects your property from expensive problems like dampness or mould, while in many cases adding an extra layer of insulation that helps to save energy and keep your home cool.

Several kinds of masonry waterproofing are used by contractors. ‘Tanking’ involves mixing a special kind of concrete that retains its form and texture as it cures. All masonry must be waterproofed, as water can erode the mortar and stone over time. Repairing broken masonry is one of the most difficult tasks you’ll take on at home. A damp-proof course (DPC)

Let’s take a closer look at the most popular ways to waterproof masonry.

Waterproofing Agents Are Used

External masonry walls can be waterproofed using one of the simplest methods: waterproofing chemicals. There are a variety of waterproofing compounds available, but the finest will help to protect your masonry walls for many years.

Waterproofing agents, such as waterproof masonry creams and resins, are used to seal masonry fully. This leads to an effective waterproof barrier that resists rain and prevents moisture from seeping into masonry walls.

Repairing Broken Masonry

If you have leaks or have observed indications of dampness inside or outside your home, masonry has probably fractured or decayed. Brickwork might have been harmed, mortar may have crumbled, and critical structural elements such as cavity wall ties may have fallen.

Water may seep into the home through gaps in damaged masonry, as mentioned previously. If this happens, it’s critical to figure out where the masonry has failed before having it restored professionally. Filling any holes in the masonry or repairing or replacing any broken or damaged bricks helps guarantee that your walls are fully waterproofed.

On a larger scale, keeping external and internal aspects of your home, such as tiles, gutters, windows, and doors, well-maintained and fully sealed will help prevent water from entering your house.

Installing a Chemical Damp Proof Course

A chemical damp proof course is an excellent method to waterproof masonry walls. A DPC keeps potentially hazardous problems like rising and penetrating dampness at bay by preventing them from affecting a house.

Injecting a chemical damp proof course into a masonry wall is an effective and long-term solution that helps homeowners keep their property waterproofed. It’s particularly useful when combined with other methods of waterproofing, such as coating masonry walls with water-resistant materials and properly sealing your home against dampness.


Tanking is a method of completely sealing and waterproofing masonry walls that are below ground level. It’s an option that’s frequently employed to seal portions of a property, such as a basement or lower floor, to form a tank-like barrier that keeps water out.

There are several methods to ‘tanking,’ but the most frequent is to remove a masonry wall, then apply waterproofing chemicals and plaster it to finish and fully seal it.

If you want your property to be dry all year, masonry waterproofing is required. For expert advice on the finest masonry waterproofing for your house, we recommend consulting a damp proofing professional.

For more information on masonry waterproofing, please contact DBI. Their certified staff will be there to assist you with expert advice that is suited to your needs, or they’ll do a complete survey of your property.

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