Our Tanksalot® Stainless Water Tanks are made from Marine Grade 316.

All our durable and fire resistant Tanksalot® stainless steel rainwater tanks are manufactured from high marine grade stainless steel, with a 30-year warranty. Our stainless steel water tanks are built to last, are resistant to corrosion, riveted for strength, and bonded with high-grade potable sealant for extra strength and resistance to leaks.

We built a wide range of standard and slimline stainless steel rainwater tanks, as well as supplying custom made round, slimline, detention and retention stainless steel water tanks. One of our friendly team members will be happy to answer any questions you may have about our industry-leading water tank products and services.


Marine Grade 316 Stainless Steel versus the lower grade 304.

The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts). Our tanks are Riveted for strength and bonded with a high grade potable sealant for extra strength and resistance to leaks. In addition to custom building tanks, we offer a wide range of standard and slimline options, including :


  • Tanksalot® Round Tanks

  • Tanksalot® Slimline Tanks that are thin tanks

All Tanksalot® Stainless Steel 316 come with a 30 year warranty and are fitted with screened strainer and a 25mm outlet. Tanksalot® are now the official supplier of Retrofit Auckland City grants for supply and installation a water tank for your home.  Call us to see if you are eligible. Call for the latest price list.