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Our Locations

Fixed Prices

No Service Call


Reliable Service

Fully Licensed

New South Wales

High Quality


What We Do

At Coastwide Waterproofing, we provide internal and external waterproofing services for homes and businesses throughout the Central Coast and Northern Sydney. Using high-quality waterproofing products from leading brands, we waterproof bathrooms, laundries, decks, balconies, swimming pools and much more. Clients can also stock up on their waterproofing essentials at our trade warehouse in West Gosford.

Call our waterproofing contractors on (02) 4306 3524 to book a service.

Half Waterproofed Wall — Internal Waterproofing in Central Coast, NSW

Who We Are

Coastwide Waterproofing is a locally owned and operated business based in West Gosford. Our waterproofers are licensed, experienced and friendly, providing comprehensive waterproofing solutions for residential and commercial clients. Whether you need supply and installation or supply only, we’ve got your waterproofing needs sorted and sealed. Talk to our team on (02) 4306 3524 for a free quote.

Central Coast

We are the Central Coast’s internal and external waterproofing experts.

Woy Woy

Need waterproofing in Woy Woy? Talk to our experienced waterproofers today!

Killarney Vale

We provide comprehensive waterproofing services for clients throughout Killarney Vale.


We are Terrigal’s go-to waterproofing contractors. Servicing homes and businesses.


Hornsby's home and business owners turn to us for all their waterproofing needs.


Narrabeen locals love our internal and external waterproofing services.