About Us

Mashman Group is built on a solid foundation of quality work & reliability.

With over 15 years’ experience in the industry, we’ve got a solution to all your waterproofing needs.

No job is too big or small, we can handle anything from a simple bathroom renovation to full-waterproofing of commercial buildings.

Some Cool Facts

Numbers Speak For Themselves

Satisfied Clients
Years of Experience
Completed Projects

We’ve rigorously tested different products and only use the best, most cost-effective systems for all aspects of our waterproofing. You’ll have peace of mind knowing that our products will complement the Territory’s challenging climate and be covered by warranty.

In our experience, most membranes we’ve been asked to repair have originally been a mix of incompatible products or simply re-coated over the existing membrane as a band-aid solution. At Mashman Group, we remove the old coatings back to the bare substrate and then apply the new membrane system. This assures years of trouble-free service life, how it should be!

When it comes to crack injection, we can cover anything from a major leak to a minor drip. Whether it’s a below grade block wall or leaking soffit of a balcony, we can fix the leak without having to remove surface coatings. Our water-stopping injection materials are 100% potable water safe and environmentally friendly. We have a range of water potable coatings for waterproofing tanks and zero VOC.

We are here to help


2/33 Benison Rd
Winnellie, NT
0438 272 234

Copyright © 2021 Mashman Group