Trusted by homeowners

At Insulfix, we take great pride in providing the best possible experience for our customers. Whether you are a homeowner wanting to upgrade your insulation or a builder needing a job done on time and on budget, our long company history and exceptional track record means you can have peace of mind when it comes to job quality, competitive pricing, and technical expertise. 

From the moment you contact us, our staff will be there to guide you through all the steps and considerations you need to make the right decision.

Still not convinced? See the 20 reasons why our list of happy customers keeps growing.

Trusted by builders

Insulfix has a long and proud history working alongside some of the leading residential and commercial builders in NSW. We are renowned for our highly competitive pricing, exceptional customer service and quality of work.

As an approved distributor of Bradford products, we have unrivalled access to and knowledge of their quality Australian-made insulation batts, with written lifetime guarantees for our installation services.

Contact us today to find out more about the Insulfix difference. With us, you can rest assured the install will be done right to deliver the optimal thermal performance for the client.


Our head office is located in Castle Hill and with our other two offices in Unanderra and Beresfield, we offer both supply and install services to homes and builders in the Sydney metro, Wollongong, Southern Highlands and Hunter areas of NSW.


2/20 Anella Ave
Castle Hill NSW 2154

Ph: 1800 632 402

Mon - Fri: 8:00am - 4:30pm

Servicing: Hills District, Parramatta, Blacktown, Penrith, Blue Mountains, Sutherland Shire, Inner West, Eastern Suburbs, Northern Suburbs, North Shore, Camden, Cumberland, Katoomba, Richmond, Kurrajong, Palm Beach  


42 Waverley Dr
Unanderra NSW 2526

Ph: 02 4271 4611

Mon - Fri: 7:30am - 4:00pm

Servicing: Helensburgh, Wollongong, Unanderra, Shellharbour, Kiama, Nowra, Sussex Inlet, Ulladulla, Goulburn, Crookwell, Bowral, Moss Vale


10 Arunga Drive
Beresfield NSW 2322

Ph: 02 4954 2281

Mon - Fri: 8:00am - 4:00pm

Servicing: Newcastle, Gosford, Nelson Bay, Forster, Taree, Gloucester, Singleton, Cessnock, Maitland, Dungog, Muswellbrook, Wyong, Central Coast