Are your bathroom fans, shower exhausts, or kitchen range hoods venting directly into your roof cavity?

In Melbourne, pumping warm, damp air or greasy cooking exhaust into a closed ceiling space is a recipe for disaster. It creates hidden condensation, feeds structural mould, degrades your insulation, and creates a fire hazard over time.

Passive vents or cheap plastic flumes simply do not solve the problem.

The solution? Professional roof exhaust ducting.By installing high-quality, weather-proof roof cowls and rigid ducting, we channel the steam, moisture, and cooking exhaust from your wet areas and kitchens straight through the roof to the outside. This keeps your internal roof space completely dry, safe, and fully compliant with building codes.

Whether you are renovating a kitchen, upgrading a bathroom, or fixing a builder's shortcut, proper roof exhaust extraction transforms your home's air quality.

• Eliminate Ceiling Mould: Stop pumping steam from your shower onto your timber framing. Direct roof extraction keeps your structural integrity safe from rot.
• Maximum Range Hood Efficiency: Kitchen range hoods perform significantly better when ducted directly through the roof via rigid flues, efficiently removing heavy cooking odors, smoke, and grease.
• Stop Bathroom Condensation: Clear your mirrors and dry your wet-area walls faster with high-performance ducting connected to heavy-duty roof exhausts.
• Pest & Weather Proof: Say goodbye to cheap plastic vents that crack and leak in the sun. We install high-grade, metal roof cowls with integrated mesh to keep driving rain and pests out.
• Building Code Compliant: Venting exhaust into a roof cavity without proper clearance is a major compliance failure. We bring your property up to standard.

You are punching a hole in your roof—do not let an unqualified handyman or a standard electrician compromise your waterproofing to install a vent.

At JSIU Roofing, your exhaust vents and penetrations are executed by fully licensed roof plumbers and registered roof tilers. We supply and install heavy-duty, compliant roof penetrations for all domestic and commercial extraction systems, ensuring you get the exact airflow your appliances demand.

🧰 We guarantee a flawless, VBA-compliant installation:✅ Precision Dektite and custom flashings for total watertight integrity. ✅ Upgrades from cheap, cracked plastic vents to durable, color-matched metal cowls. ✅ Expert installation on Concrete Tiles, Terracotta, Colorbond, and Corrugated Metal Decking. ✅ Strict adherence to Victorian Building Authority (VBA) requirements and Australian Standards (AS 3500.3).

Not sure if your current bathroom or kitchen fans are venting correctly? Let a licensed professional inspect it.

Before you commit, we provide a thorough assessment to determine if your range hood or shower exhaust requires proper roof ducting.

Our diagnostic report reveals:🟢 The exact roof cowl and ducting size required to maximize the performance of your specific exhaust fan or range hood. 🔴 Photographic evidence showing if your current system is illegally dumping moisture or grease directly onto your ceiling insulation.

Servicing Greater Melbourne and the Northern Suburbs. Protect your structural timber, eliminate mould, and ensure your home breathes properly.

📲 Call Joel Direct: 0421 803 752 🌐 Visit Us: www.jsiuroofing.com📧 Email: jsiu.roofing@gmail.com