Vented cowls and flaps allow fresh air to enter the tank.

  • Fresh air circulating in the tank allows water to breathe
  • Stops pressuriation inside the tank
  • Include stainless steel insect proof screens


Why Marley?

15 year guarantee

We stand by our product, and back it for 15 years

Will not rust / corrode

Designed for NZ’s salt-laden coastal air

UV resistant

UV resistant to handle NZ’s harsh summer sun, high UV levels and long, hot days

100% Recyclable

Used spouting and downpipes can be returned to Marley for recycling

Made in NZ

Proudly made in New Zealand for over 40 years



50mm Insect Proof Vent Cowl
PVC with stainless steel screen


90mm Insect Proof Vented Flap
PVC with stainless steel screen


90mm Overflow Insect Screen



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Experience colour

Marley Stratus Design Series® is a available in five colours to match New Zealand’s favourite house and roof colours.