Skilled Waterproofing in Hornsby

Servicing Postcodes

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 clients throughout Hornsby—from Ginger Meggs Park to the Pacific Motorway.

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.

Hornsby properties face a mix of weather conditions—from heavy rainfall to damp, leafy surroundings. At Coastwide Waterproofing, we offer professional internal and external waterproofing services designed to protect Hornsby homes and businesses from water-related damage year-round.

Our external waterproofing solutions are ideal for shielding basements, retaining walls, balconies, and rooftops from rain and groundwater. In a suburb with hilly terrain and older homes, this added protection helps prevent issues like foundation erosion, leaks, and mould.

Indoors, our internal waterproofing services keep wet areas like bathrooms, laundries, and kitchens dry and damage-free. We use high-performance membranes and meticulous application techniques to ensure full compliance and long-term performance.

With a commitment to quality and years of industry experience, Coastwide Waterproofing delivers dependable protection tailored to Hornsby’s environment. Whether you’re renovating or building new, we’ll help keep your property watertight, healthy, and structurally sound.

Visit us today or call 02 4306 3524. Our experienced waterproofers proudly serve clients throughout Hornsby and the surrounding areas. Like to see our previous projects? Click here.

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

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

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

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 clients throughout Hornsby and surrounding areas.

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

Frequently Asked Questions

Local Information >

Local Post Office >