Zincalume Box Gutter 150 x 300 x 150
The Zincalume box gutter is a 150 x 300 x 150mm internal gutter with a wider 300mm base, boxed into the roof to collect water from a larger roof area. The wider base carries more water, and the unpainted aluminium-zinc finish resists corrosion without painting. Because a box gutter is concealed, the finish does not affect the look of the roof. It is cut to length with a +200mm / -0mm tolerance and priced per lineal metre.
Key Features
- 150 x 300 x 150mm box gutter profile with a wider base
- Wider capacity for larger roof areas
- Unpainted Zincalume finish, corrosion resistant
- Minimum fall of 1:200 for drainage
- 0.55mm BMT steel
- Cut to length, price per lineal metre including GST
Specifications
- Product: box gutter
- Profile: 150 x 300 x 150mm
- Material: Zincalume steel, 0.55mm BMT
- Fall: minimum 1:200
- Length: cut to order, tolerance +200mm / -0mm
- Finish: unpainted aluminium-zinc coating
Installation
Fix the box gutter into the roof structure with box gutter brackets, setting the fall at a minimum of 1:200 so water drains to the outlet. The wider base carries more water, so match the gutter to the roof area feeding it. Connect the gutter to the downpipe at the outlet and fit an expansion joint on a long run.
Applications
- Concealed internal gutters on larger roof areas
- Valley and parapet gutter runs
- Zincalume roofs and coastal areas
- Roofs where a hidden gutter with higher capacity is wanted
What You Need To Complete The Job
Support the gutter with box gutter brackets and add a box gutter expansion joint on long runs. For a standard-width gutter see the 150 x 150 x 150 Zincalume. Browse the Custom Flashing range for more.
Frequently Asked Questions
What is the benefit of the 300mm base?
The 300mm base gives the gutter a wider water-carrying capacity, so it suits a larger roof area or a valley that feeds more water than a standard-width gutter.
Why use the Zincalume finish?
Zincalume is an unpainted aluminium-zinc coating that resists corrosion without painting. Because a box gutter is concealed, the finish does not affect the look of the roof.
What fall does it need?
A minimum fall of 1:200 is required so water drains to the outlet. Set the fall with the brackets before fixing the gutter.
How is it priced?
It is priced per lineal metre including GST and cut to your required length with a tolerance of +200mm / -0mm.
Can I order for delivery or pickup?
Yes. You can order online and choose Australia-wide delivery or pickup from our Truganina trade counter in Melbourne’s west. Delivery windows depend on your postcode, and we send a confirmation once your order is ready. For any questions call (03) 93941400 or email orders@singhroofingsupplies.com.au.




