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Skilled Waterproofing in Hornsby

Professional Waterproofing in Hornsby

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Fixed Prices

No Service Call


Reliable Service

Fully Licensed

New South Wales

High Quality


Comprehensive Waterproofing Solutions

Building a home, business or swimming pool and need it waterproofed? Look no further! At Coastwide Waterproofing, our qualified waterproofers provide internal and external waterproofing services for residential and commercial clients throughout Hornsby—from Ginger Meggs Park to the Pacific Motorway. Whether you’re after supply and installation or just supply only, we’ve got all your waterproofing needs covered.

Ready to get started? Contact our waterproofing contractors on (02) 4306 3524 for a free quote. Our rates are highly competitive; our workmanship—there’s no competition.

Waterproofing Between Two Walls — Internal Waterproofing in Hornsby, NSW

Products We Stock

Visit our trade warehouse for a wide selection of quality waterproofing products from leading brands. Our range includes:

Construction Equipment — Internal Waterproofing in Central Coast, NSW
And much more! Visit us today or call (02) 4306 3524 for supply/installation. Our experienced waterproofers service residential and commercial clients throughout Hornsby and surrounding areas. Like to see our previous projects? Click here.

Products & Supplies

Our trade warehouse has all your waterproofing essentials under one roof. We also offer supply and installation throughout Hornsby and surrounds.

Internal Waterproofing

For all your internal waterproofing needs in Hornsby, our waterproofers have it covered—bathrooms, ensuites, powder rooms, toilets and laundries.

External Waterproofing

Need external waterproofing in Hornsby? We seal flat roof areas, decks, balconies, retaining walls and much more—all using quality products.

Swimming Pools & Water Features

We waterproof a variety of external water-carrying structures—swimming pools, water features, ponds, etc. Servicing Hornsby and surrounding areas.


Looking to waterproof your commercial car park, roof or otherwise? We provide waterproofing solutions for businesses throughout Hornsby and surrounds.

Brands We Source

At Coastwide Waterproofing, we’re proud to use and supply products from leading brands:

And more! Whether you need internal or external waterproofing services, we are your comprehensive solution—all at an affordable price. Speak to our friendly team on (02) 4306 3524 to book. We service residential and commercial clients throughout Hornsby and surrounding areas.

Frequently Asked Questions

Waterproofing is one of the most common defects reported by property owners. That’s why it’s important that waterproofing is conducted by a licensed professional.

Cementitious and liquid membrane waterproofing are the two most common methods of waterproofing a commercial building.

Waterproofing a swimming pool is critical to ensure the underlying surface does not incur water damage.