Roof valleys carry a lot of water during heavy rain, so damaged or worn valley flashing can cause leaks quickly. Rust, movement and old sealant can all weaken the metal over time. We install new valley flashing, repair existing sections and check the surrounding roof area to make sure water drains properly. All work is completed to current BCP roofing standards.

A roof valley is the point where two roof surfaces join, and it naturally catches more water than other parts of the roof. If the flashing is worn out, water can spill over the edges or seep under the tiles or metal sheets.
We inspect the valley for rust, cracks, loose fixings and blockages. Once we know what is causing the issue, we explain the best repair or replacement option.
Old valley flashing often rusts, lifts or cracks, especially on older homes. We remove the damaged metal, check the battens and install new valley flashing that fits the roof layout.
If you have a tiled roof, we lift the tiles carefully, put the new flashing in position and relay the tiles so water flows smoothly into the valley again. For metal roofs, we secure the flashing and seal any joints that need attention.
Leaves, sticks and debris often collect in roof valleys, especially under trees. When this builds up, water can overflow the valley during heavy rain. We can clear the debris, check the fall of the flashing and make sure nothing is stopping the water from draining properly.
If the valley has ongoing issues, we talk you through long-term options to help prevent blockages and reduce the risk of leaks.
If you have leaks near a roof valley or can see rust or lifting metal, call us on 03 9498 0458 or email info@heritageplumbinggroup.com.au. We can inspect the valley and explain what needs to be done.
Frequently Asked Questions
Rust, movement in the roof, heavy debris build-up and old sealant wearing out are the most common causes.
Yes. If only part of the flashing is damaged, we can replace that section without doing the whole roof.
Yes. We install valley flashing suited to your roof type so water drains properly.
Most of the time it is blockages or poor fall, but damaged flashing can also cause water to spill over.
It depends on the age of the roof, weather exposure and maintenance. We can inspect it and let you know its condition.
Costs vary depending on roof access and the length of the valley. Call our office for pricing based on your home.






















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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.