Waterproofing Products on the Central Coast

A waterproofing system is only as good as the products behind it. At Coastwide Waterproofing, we supply high-quality waterproofing products to builders, contractors and property owners across the Central Coast and neighbouring areas such as Hornsby and Narrabeen. Based in West Gosford, we stock liquid and PVC sheet membranes, primers, sealants, insulation and pebbles—chosen for performance and reliability.

Whether you’re managing a renovation or sourcing materials for a large site, we offer trusted brands and product advice. Our team understands real-world applications and helps you choose products that suit your job.

Call 02 4306 3524 to order or speak with someone who knows the ins and outs of waterproofing materials.

Getting waterproofing right starts with the right materials. We supply products that perform under pressure, and we know how each one works on-site. From internal membranes to external systems and drainage support, we offer more than just stock.

Our team provides practical advice based on years of waterproofing experience, helping you select materials that suit your project, environment and finish. We supply to builders, tradies and DIY renovators and keep our service simple and efficient.

Whether you’re picking up for a quick repair or preparing for a full build, we help you get what you need without the hassle or delays.