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Specialised Waterproofing in Narrabeen

Professional Waterproofing in Narrabeen

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Fixed Prices

No Service Call


Reliable Service

Fully Licensed

New South Wales

High Quality


Complete Waterproofing Solutions

Welcome to Coastwide Waterproofing. Our experienced waterproofers provide internal and external waterproofing services for homes and businesses throughout Narrabeen—from Middle Creek Reserve to Narrabeen Beach. Whether you need the bathroom, balcony or swimming pool waterproofed, we use high-quality products from leading brands to ensure your wet areas are sealed and protected—all at an affordable price.

Speak to our waterproofing contractors today on (02) 4306 3524 for a free quote. Like to see some of our previous work? After all, we are proud of it. Click here.

Waterproofing a Flat Roof of a House — Internal Waterproofing in Narrabeen, NSW

Products We Stock

Looking to stock up on waterproofing essentials? Our trade warehouse, Coastwide Waterproofing Supplies, has everything you need, including:

Products and Supplies Inside the Store — Internal Waterproofing in Central Coast, NSW

And much more! Whether you need supply and installation or supply only, we can accommodate your needs. Ready to get started? Contact our skilled waterproofers today on (02) 4306 3524 to book. We service residential and commercial clients throughout Narrabeen and surrounding areas.

Products & Supplies

Our trade warehouse, Coastwide Waterproofing Supplies, stocks a variety of waterproofing essentials. Open to clients throughout Narrabeen and surrounds.

Internal Waterproofing

Need internal waterproofing for your home or business in Narrabeen? We seal bathrooms, ensuites, powder rooms, laundries and more.

External Waterproofing

For external waterproofing in Narrabeen, turn to our experienced waterproofers. We seal a variety of external wet areas such as flat roofs, decks/balconies and more.

Swimming Pools & Water Features

Need your swimming pool/water feature waterproofed? We waterproof various water-carrying structures for clients throughout Narrabeen and surrounds.


Our commercial waterproofers seal car parks, roofs and more for businesses throughout Narrabeen and surrounding areas.

Brands We Source

At Coastwide Waterproofing, we source and use products from the following brands:

And more! By using quality brands, we can ensure quality results—without hurting the hip pocket. Talk to our friendly waterproofers today on (02) 4306 3524 to book a service. We provide comprehensive waterproofing solutions.

Frequently Asked Questions

Some tilers are licensed to perform waterproofing; however, for the best result, hire a professional waterproofer.

Waterproofing must pass a building inspection and be done in accordance with the Australian Standard. Therefore, it should be left to a professional.

Given the right choice and circumstances, basic waterproofing membranes can last at least ten years.

Waterproofing is not permanent and will need to be resealed every ten years or so.