The Logic

What is a downpipe?

It is a connection between the gutter, the wall and the drain
designed to get the water through as quickly as possible with
the least possible restrictions.

Why has a downpipe in the past been made out of a number of joiners and straight pieces of tube and required a trained person to install?

A downpipe connects three sub-trade activities, the roofer, the cladder and the drain layer.
It requires cutting on site to suit each trade’s tolerances.

In the past these tolerances were so liberal, the only logical alternative was to cut and assemble on site.

With the newer tighter tolerances of erection on site it is now possible to manufacture downpipes
to match house plans, avoiding the assembly and cutting function.

What is the largest cost in a downpipe?

The largest is in the bends and in the cost of assembly these bends with straight tube.

40 % of a traditional plastic or Colorsteel pipe, Copper of Stainless pipe is in this area.

What has Delta patented in NZ and Australia to attack this major cost?

Delta has patented the ability to bend 1-7mm wall thickness around a bend
removing the need for joiners entirely and reducing the cost.

By using aluminium it has extended the life of a downpipe three fold.

By using powder-coating we have produced a more durable surface.

With single piece tube we have removed the potential blockage points at the joiners,
which can hold up water flow and cause leaf traps in the downpipe.

We have been able to tighten the tuck under the soffit to 2 degrees making the pipe
more attractive when viewed from the side of the house.