Commercial Services
Building & Roof Plumbing
From the foundations to the rooftop, MPJ Plumbing Group has your commercial plumbing needs covered. Our building & roof plumbing services in Sydney encompass everything from installing new plumbing systems in construction projects to maintaining and repairing roof drainage on existing buildings. We are experienced in large-scale plumbing installations – including water supply lines, sewer and stormwater drainage, and gas fitting for new builds or renovations. Additionally, we have dedicated roof plumbing experts to ensure your gutters, downpipes, and roof flashings are properly installed and leak-free, protecting your premises from water damage. Whether you’re a builder looking for a reliable plumbing contractor or a property manager needing roof leaks fixed, MPJ delivers quality workmanship that meets Australian Standards and stands the test of time.
Our Building Plumbing Services
When it comes to plumbing in new construction or major renovations, MPJ Plumbing Group offers end-to-end solutions:
Design & Planning
Installation
Our licenced plumbers carry out complete installations for commercial buildings, shopping centres, apartment complexes, and industrial facilities. This includes laying sewer lines, installing stormwater drainage systems (pits, pipes, onsite detention if required), running copper and PEX water supply lines, setting up hot water systems or boilers, and installing gas piping for kitchens or heating. We also install all the fixtures and outlets – from toilets and sinks to commercial kitchens fit-outs – with precision. Every pipe and fitting is tested for leaks and performance. We coordinate closely with other trades to keep the project on schedule.
Fit-off & Final Handover:
In the finishing stages, we return to connect and commission all plumbing fixtures and equipment. We test each component – ensuring toilets flush properly, drains clear, taps mix correctly, and gas appliances ignite safely. We then provide compliance certificates and as-built plans as needed, certifying that the plumbing works are completed to standard and ready for use.
Our Roof Plumbing Services
Sydney’s weather can be harsh, from heavy rainstorms to scorching sun, so a building’s roof plumbing must be robust. MPJ’s roof plumbers offer:
Gutter & Downpipe Installation
We install high-capacity gutters and downpipes to channel rainwater effectively from your roof. Proper sizing and placement are key to preventing overflow; we ensure your system can handle intense rainfall. We work with Colorbond and other quality materials that resist rust and look great. For multi-storey buildings, we install internal downpipes and stormwater drainage to ground or storage tanks as required.
Roof Leak Repairs
If you notice water stains, drips, or flooding during rain, our team will identify the source of the leak. Common culprits are cracked roof flashings, clogged gutters, or perished sealant around penetrations (like vents or skylights). We quickly repair or replace damaged sections, reseal joints, and test the fix with water to confirm the leak is resolved.
Flashings & Roof Penetrations
We expertly install and repair flashings – the metal pieces that cover joints and edges on roofs around chimneys, vent pipes, AC units, etc. Good flashings are vital to keep water out. We custom-fabricate flashings where needed for a perfect fit. Additionally, if you’re adding new equipment on the roof that needs plumbing (like HVAC drainage or solar hot water), we’ll ensure the penetrations are properly sealed and connected to waste as required.
Gutter Maintenance & Replacement
Over time, gutters can sag, joints can leak, or they may fill with debris. We provide cleaning services and can add gutter guards to reduce blockages. If existing gutters or downpipes are beyond repair, we replace them with new ones, matching the profile and colour to your building. Keeping your roof drainage clear and functional is the best way to avoid expensive water damage to the building structure and interiors.
Why Choose MPJ for Building & Roof Plumbing?
Quality Craftsmanship
Our plumbers take pride in their work. Whether soldering a pipe joint or aligning a gutter, we focus on quality. We use durable materials suitable for commercial environments, and all work is done in accordance with Australian plumbing and roofing standards.
Project Management
For construction projects, we have the capacity to manage large plumbing jobs efficiently. We show up on time, coordinate with your site manager, and hit deadlines. Our organised approach prevents delays and ensures smooth progress from rough-in to final fit-off.
Safety & Compliance
We adhere to strict safety protocols on job sites, especially when working at heights on roofs or in deep trenches. MPJ is fully insured and our team is trained in OH&S requirements. You can be confident that our worksites are safe and our installations will pass any inspection or certification process.
Aftercare Service
Our relationship doesn’t end at handover. MPJ Plumbing Group is available for warranty service, ongoing maintenance, or future renovations. For building managers, having us install the system means you have a knowledgeable partner to maintain it long-term. We stand by our work and are just a phone call away if you ever need assistance down the line.
Get in Touch
For top-quality building and roof plumbing services in Sydney, MPJ Plumbing Group is the name you can trust. Whether it’s a brand-new commercial build, an extensive renovation, or urgent roof repairs, our skilled team is ready to deliver excellence. Call (02) 9053 8741 or reach out online to discuss your project and get a transparent, competitive quote. With MPJ on your side, you’ll receive professional plumbing solutions that secure your building’s water systems from the ground up. Let us help make your construction a success and keep your roof overhead watertight – contact MPJ Plumbing Group today for reliable service and expert craftsmanship.