Servicing Greater Brisbane

Domestic & Commercial
All work to Australian Standards

* AS4858/2004
* AS3740/2004
* AS4654

Clients we do work for…

Shopping Centres
Commercial Builders
Home Builders
Home Owners
Body Corporate

Type of work we do…

Shopping Centre Maintenance
Box Gutters
Leaking Roofs
Air Conditioning Units
Seeping / Retaining walls
Expansion Joints
Leaking Showers

Leaking walls and Slabs Brisbane

Waterproofing Basement Walls

Basement Tanking – Below Ground Waterproofing

Water Leaking through Brick Wall

Basement walls leak when water builds up in the soil outside your foundation. This water presses against your walls, leaking in anywhere it can.

If your basement walls are leaking, your local Basement Tanking Systems Contractor Sentinel Waterproofing can help! We have warranted, effective solutions for Waterproofing basement walls that will permanently address your problem. If you live in Brisbane, we are near you!

Below ground waterproofing

Leaking basement walls can greatly limit the usefulness of your below-grade space. Leaking walls tend to be ugly surfaces, stained by water, mould, and white, powdery efflorescence.

As walls continue to leak, they also compromise your options for basement finishing, by adding moisture to the space that could be damaging to drywall, carpeting, wood studs, and other organic materials.

That moisture encourages the growth of mould, mildew, and rot on your building materials. And where the below ground walls are not covered, humidity is added to the basement air, creating a musty, damp space.

Basement tanking

Basement Tanking needed


It costs you nothing to meet with one of our waterproofing basement walls specialists for a free, on-site consultation, inspection, and written price quote.

Where Do Basement Walls Leak?

Basement walls can leak from multiple locations, including cracks, around pipe penetrations in the walls, or through basement windows. Water can also seep through the concrete itself, seeping into your basement as moisture.

Four Solutions To Fix Leaking Basement Walls

As is the case with most home improvements, some methods are much better than others. We’ve spent more than 30 years carefully researching which methods will work best and which methods will ultimately fail.

At Sentinel Waterproofing, we only recommend some of the options available. We believe in choosing permanent solutions to wet walls that do not disrupt your home when being installed. Our systems can be serviced should a problem arise, and include a written transferable warranty.

Waterproofing Basement wall  techniques can be broken down into these four major category’s

Basement Tanking

Basemnt tanking   coat the walls, creating a vapor barrier that will hold back moisture that would otherwise seep through the porous concrete..

Once the coatings have been applied, there is no easy or effective way to remove them from the concrete.


Instead of coating the basement walls from the inside, some contractors will instead coat the basement walls from the outside. They will do this with either a damp-proofing, or a Waterproofing Basement Walls .

Below Ground Waterproofing is intended to stop all moisture from entering your basement. These coatings are designed to last  and they bridge all wall cracks.

Installing these coatings means that you’ll need to access the outside walls of your foundation — so the entire perimeter of your home will need to be excavated invasive job that costs about twice as much as Basement Tanking waterproofing pump systems. As the perimeter is dug out, any gardens, patios, walkways, steps, or other landscaping will need to be removed.

Waterproof Wall Panels

Instead of covering the basement wall with Basement Tanking , we recommend mechanically attaching basement wall panels. These wall panels will do double duty; keeping out moisture while upgrading the space.

When water vapor passes through the porous concrete of your walls, it brings traces of minerals with it.

As the water vapor evaporates into your basement air, these minerals are left behind. Over time, they form into the white, powdery mineral salt known as efflorescence.

In both cases, the mould is not growing on the concrete, nor is it growing on our basement walls.

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