Eliminate rising damp in your Sydney home with expert solutions. Prevent structural damage, mould, and musty smells. Trusted local damp specialists.
Rising damp is a serious moisture problem that affects many Sydney homes, especially older properties. It occurs when groundwater seeps up through porous building materials like bricks, mortar, or stone due to capillary action. This moisture can rise up to 1.5 metres in your walls and floors, bringing salts, mould, and long-term damage with it.
If left untreated, rising damp can lead to:
Sydney’s older terrace homes, Federation-style houses, and heritage buildings are especially prone to this problem due to lack of modern waterproofing.
Rising damp typically happens due to one or more of the following:
Here’s what to look out for:
Visual Signs:
Smell & Sensation:
Structural Signs:
If you suspect any of these, you may be dealing with rising damp and should act quickly to prevent escalating structural damage.
At Sydney Subfloor Ventilation, we offer comprehensive, long-term rising damp solutions using the most effective techniques for Sydney homes:
We start with a full inspection of your property, checking moisture levels in walls, floors, and subfloor areas using industry-grade moisture meters.
We install or replace a chemical or physical DPC to stop further moisture from rising through your walls. Common methods include:
Once moisture is under control, we remove and replace salt-contaminated plaster and wall finishes to prevent reoccurrence.
To prevent moisture buildup beneath your floors (which worsens rising damp), we install energy-efficient ventilation systems for improved airflow.
If needed, we’ll inspect site drainage and guttering to ensure water is directed away from the building.
Rising damp weakens bricks, mortar, and timber over time. Early intervention can save you from extensive (and expensive) repairs.
Moist environments are breeding grounds for mould, mildew, and bacteria. Fixing rising damp improves air quality and reduces allergy risks.
Damp walls increase the risk of electrical shorts, power outages, or dangerous shocks — especially when moisture reaches wiring.
Rising damp makes interiors feel cold and clammy. A dry home is a warmer, healthier, and more comfortable space.
Buyers are wary of moisture issues. Treating rising damp protects your resale value and gives peace of mind to potential buyers.
If you’re renovating or renting, treating damp problems ensures compliance with Australian building and health regulations.
With years of experience fixing moisture issues in Sydney’s homes, we understand the city’s unique architectural styles, climate challenges, and soil conditions. From Inner West terrace homes to Northern Beaches residences and South Western Sydney cottages, we tailor rising damp solutions to each suburb and structure.
Many of our clients live in heritage-listed or character homes. We use non-invasive damp proofing methods and traditional plastering techniques that preserve your home’s appearance while addressing moisture problems discreetly and effectively.
