South Coast Waterproofing Services

Long-Lasting Protection for Your Property

South Coast Waterproofing

Your Waterproofing Experts in Jervis Bay

Our team is fully qualified, licensed, and insured, with expert knowledge of waterproofing systems to ensure every job is completed professionally, on time, and on budget.

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Water damage is one of the most costly and disruptive problems you can face—whether it’s a leaking shower, cracked balcony, or compromised bathroom membrane. At Activ Plumbing Solutions, we deliver expert waterproofing services across Jervis Bay and the South Coast, using industry-best practices and quality materials to keep water where it belongs.

Our licensed professionals are highly experienced in all aspects of waterproofing—from bathrooms and balconies to rooftops and retaining walls. We work with homeowners, builders, body corporates, and commercial property managers to ensure watertight results that meet Australian Standards (AS 3740-2010) and the Building Code of Australia.

Understanding Waterproofing and Why It Matters

Waterproofing is the process of applying barriers or membranes to prevent water ingress into a building structure. Without proper waterproofing, moisture can creep into walls, floors, ceilings, or balconies—leading to rot, mould, and structural damage.

We provide waterproofing solutions for:

  • Bathrooms – including showers, floors, and wet areas
  • Balconies and Decks – exposed areas prone to leaks
  • Roofs and Flat Roofs – especially with torch-on membranes
  • Retaining Walls – preventing moisture from seeping through garden and structural walls

Our Waterproofing Process

Each job is different, but our professional process ensures the best result every time:

1. Site Inspection and Assessment

We inspect the affected area and assess any existing damage or leak pathways. This helps us choose the most effective waterproofing method.

2. Surface Preparation

We clean, dry, and prime surfaces, removing any old membranes or debris to ensure maximum adhesion.

3. Application of Waterproofing Membrane

We apply a liquid membrane, sheet system, or crack injection (depending on the area), ensuring full coverage and flexibility for movement.

4. Joint Sealing and Detailing

Junctions, corners, penetrations, and wall-floor intersections are reinforced with sealant or bandage systems to prevent future failures.

5. Curing and Final Inspection

We allow adequate curing time before testing and completing a final inspection. For bathrooms and balconies, we ensure the area is tile-ready.

The Benefits of Professional Waterproofing

Long-Term Moisture Protection

Our high-performance membranes create a lasting barrier against leaks and dampness.

Prevent Structural Damage

Avoid costly repairs caused by rot, swelling, or foundation damage due to water ingress.

Mould and Mildew Prevention

Waterproofing stops moisture buildup that can lead to harmful mould in your home or office.

Compliance with Australian Standards

We meet or exceed AS 3740 and other national building codes, ensuring safe and legal outcomes.

Suitable for Residential and Commercial Properties

From bathroom renos to strata blocks, we tailor our waterproofing solutions to suit the job.

100+ Five Star Reviews

See what our customers have to say

Cameron Dagger

I have used Activ Plumbing a few times now and cannot recommend them enough. Olly is so professional, prompt and left the job cleaner than when he arrived. Great honest no.1 local plumber! Will definitely be using Olly and his team in the future!

Jordan Hay

Olly and the crew from Activ Plumbing did a fantastic job at my place as always. They are prompt, professional and well priced every time. I will definitely have them on my next job.

Paul Slaats

Had an issue over Easter with blocked drains. Called Activ plumbing on Good Friday, Olly turned up early Saturday morning and cleared the blockage. Could not ask for better service, especially on an Easter weekend. I would highly recommend.

Christine Leader

Olly and his team completed a huge renovation of our ensuite, bathroom, toilet and laundry. We are delighted with the outcome. Everyone in his team was professional, gave great attention to detail and provided quality workmanship. Work progressed in a timely manner with no delays, and we were kept informed of all steps during the progress by Olly, who answered every email and mobile call promptly. Everyone was friendly and respectful and a pleasure to deal with. We would highly recommend Olly and the team to anyone requiring plumbing and renovation services.

Jacqueline Cooke

Olly and his team were fantastic. They were lovely to deal with, professional, and went above and beyond. Their commitment to excellence was really comforting! And all for a very reasonable price. Would definitely recommend them for any plumbing work!

Deanne Duncan

OLLY OLLY OLLY Oi! Oi! Oi! What more can I say?? I had a full ensuite renovation done by Olly and his team last month. An absolutely fantastic person and team to deal with. Great communication, great ideas, great attention to detail, great team of guys who were courteous, friendly, respectful and tidy! I am overjoyed with the outcome of my new ensuite – it’s beautiful and so functional. Love it!! Would definitely highly recommend Olly and his team for your bathroom renovation…

Plumbing & Renovation services

Bathroom Renovation

Professional bathroom design service in the Shoalhaven offering fixed price packages with high quality fixtures.

Hot water Systems

Nowra hot water systems. We can supply and install new gas, electric and solar hot water heaters and systems.

Leaking Taps

Leaking taps and pipe repairs. For emergency tap and leaking pipe repairs, we have you covered 24 hrs / 7 days.

CCTV DRAIN CAMERA

We can locate blocked drains with our high tech CCTV Drain Camera, Service Locator and Water Jetter

Water Efficiency Compliance

Activ can help make sure your property meets NSW standards.