Home Mould Damp Drainage

Water Under House Mould, Damp & Drainage Solutions in Coffs Harbour

Damp & Drainage Solutions

Why Coffs Harbour Homes Are at Risk

The Mid North Coast’s subtropical climate, combined with clay heavy soils, creates the perfect conditions for moisture to build up beneath homes in Coffs Harbour.

Heavy rainfall, poor drainage fall and stormwater runoff often cause water to collect under houses instead of flowing away from foundations. Over time, this trapped moisture leads to rising damp, mould growth and structural damage if left untreated.

Local experts understand local conditions. Every solution we design is based on Coffs Harbour soil behaviour, rainfall patterns and building styles.

Issues We see

Common Causes of Under House Water

Identifying the root cause is the first step to a permanent solution. Also, we provide professional assessment and long term drainage solutions for damp, mould and water issues under houses across Coffs Harbour and surrounding areas.

Poor Natural Fall

The ground around the home slopes incorrectly, allowing water to drain toward the foundations.

Stormwater Runoff

Roof, driveway or neighbouring stormwater flows directly into subfloor areas.

Inadequate Ventilation

Lack of airflow prevents natural drying, trapping moisture under the house.

Leaking Pipes

Undetected water leaks from sewer or stormwater pipes slowly saturate soil over time.

High Water Table

Naturally high groundwater levels cause rising moisture during wet periods.

Garden Bed Build Up

Landscaping raised above damp proof courses allows moisture to bridge into walls.

New Addition

What You See & Smell

Symptoms are often ignored until they become expensive problems. Look out for these warning signs:

Pooling Water & Mud

Standing water under the house days after rainfall.

Damp Odours

Musty smells travelling through floorboards into living areas.

Rising Damp Marks

Tide lines or bubbling paint appearing on lower internal walls.

Structural Risks

The hidden damage is far more costly. Long-term moisture exposure compromises the integrity of your home.

Mould & Health Issues

Airborne mould spores can affect indoor air quality and respiratory health.

Foundation Subsidence

Water softens soil, causing movement and cracking in footings and walls.

Termite Attraction

Moist environments are a primary attractant for termites.

Out Support

Effective Drainage Solutions

We don’t just patch the problem. We manage water flow permanently.

Subsoil drainage

Installation of aggregate pipes in gravel filled trenches to collect underground water and direct it safely away from footings and foundations.

Sump & Pump Systems

Automatic pump pits installed in low lying areas where gravity drainage is not possible, actively removing collected water from beneath the home.

Surface Water Redirection

Soil regrading and installation of spoon drains or channel grates to intercept surface runoff before it flows under the house.

Damp & Drainage Solutions

Advanced Prevention Measures

Beyond drainage, we install barriers to stop moisture migration.

Damp Proof Membranes

Physical barriers installed under floors to block rising moisture.

Ventilation Improvements

Natural or mechanical ventilation to promote airflow and drying.

French Drains

Perimeter drainage systems to intercept groundwater before it reaches foundations.

Need a custom solution?

Every property in Coffs Harbour is different. We assess and design drainage systems specifically for your site.