Rain heads and sumps are essential components for managing roof stormwater and preventing internal water damage. Installed between gutters and downpipes, they control heavy runoff, reduce overflow, and improve overall drainage performance.
At Heritage Plumbing Group, we design, supply and install high-capacity rain heads and sump boxes tailored to your roof structure and rainfall needs. All installations are carried out by licensed roof plumbers and fully compliant with Victorian Building Authority (VBA) and Plumbing Code of Australia standards.
Rain heads — also known as sumps — are critical to roof drainage systems, particularly on buildings with box or valley gutters. These fittings act as external overflow systems, collecting and controlling rainwater before it’s discharged into downpipes.
A rain head is a box-like fitting positioned between the gutter and downpipe, allowing excess water to discharge freely while preventing backflow into the roof cavity. A sump (or sump box) is typically used on flat or concealed roofs, channeling roof water into stormwater drains.
In Melbourne’s unpredictable climate, where heavy downpours can strike without warning, rain heads and sumps prevent flooding, internal leaks and ceiling damage. They’re especially valuable in areas prone to storms or where large roof catchments require high-flow drainage solutions.
Incorrectly designed or fitted rain heads and sump boxes can lead to serious drainage issues — from water pooling and roof leaks to structural water damage. At Heritage Plumbing Group, we ensure every system is custom-built to suit your property’s roof pitch, gutter capacity and stormwater discharge points.
Our installations feature:
Overflow lips and mosquito-proof mesh for improved safety and hygiene
VBA-approved sump designs for high-volume water flow
Precision sizing based on roof catchment area and rainfall intensity
Whether you’re building new, renovating, or replacing a failed system, our licensed roof plumbers will install rain heads and sumps that keep your roof drainage performing reliably in Melbourne’s heaviest downpours.
Every roof is different — which is why we tailor all rain head and sump installations to your building’s structure, materials, and water flow requirements.
We work with residential, commercial and industrial properties, offering solutions compatible with:
Box and valley gutter systems
Metal and tiled roofs
Skillion and flat roof designs
Heritage and modern façades
Our team carefully assesses the roof area, fall gradient and drainage points to determine the ideal size, placement and material. We also supply rain heads and sumps in Colorbond, stainless steel, or galvanised finishes, ensuring your drainage performs perfectly while complementing your building’s look.
Melbourne’s seasonal storms and leafy suburbs can overwhelm even well-built guttering systems. Rain heads and sump boxes play a crucial role in preventing this by regulating water flow, reducing blockages, and protecting roof cavities from backflow.
They are especially important for:
Inner-city terraces and heritage homes with concealed gutters
Commercial roofs with large catchment areas
Properties in high-rainfall or tree-dense suburbs
Installing these drainage safeguards significantly reduces the risk of overflow, ceiling damage and internal leaks. Every installation we perform adheres to VBA and Australian Standard plumbing regulations, ensuring your roof drainage system is safe, compliant and ready for Melbourne’s changing weather.
Looking to improve your roof drainage with professional rain head or sump box installation?
Contact Heritage Plumbing Group on 03 9498 0458 or email info@heritageplumbinggroup.com.au to book an expert roof drainage assessment. Our team will inspect your system and recommend the ideal setup to protect your property year-round.
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Need a reliable plumber near you? Heritage Plumbing Group offers expert solutions across Melbourne with fast response times and top-quality service.
Our licensed team brings decades of local expertise, ensuring efficient, long-lasting results for emergencies, maintenance, and major projects.
