Auckland Roofing Product Guide

Auckland Roofing Product Guide

We’ve put together this guide to help you navigate through the wide diversity of roofing products available in Auckland. So you don’t have to let your architect, builder or roofer influence your choice, It’s yours! This guide regroups all the best roofing products available in Auckland, when to use them and why, so you can choose what’s best for your roof.

Long-run roofing

Long-run roofing is the most popular roofing product in Auckland. It is by far the most versatile roofing system and often a cheap option with great value for money. Corrugated for your Ponsonby heritage bungalow or a secret-fixed trough section profile for your super modern architect home, if you like the look of long-run it’s a no brainer.

Pros
  • Versatility
  • Value for money
  • Fast installation
  • Relatively good resistance to foot traffic
  • Wide range of products and suppliers
  • Leaks are usually easy to detect and fix
Cons
  • Not as durable in extreme marine environment. You’ll have to get marine grade steel to get a valid warranty

Corrugated

Whatever they call it, all long-run roofing manufacturers have a corrugated profile and there is very little difference between them. It’s a classic! It’s always been around,
never got out of fashion and probably never will. You can put corrugated roofing on pretty much any house and be sure it won’t look out of place. If you want to stand
out it’s probably not what you’re looking for.

What you need to know about corrugated profiles:
  • Typically manufacturer’s recommend installing corrugated profiles on a roof pitch greater than 8° with a relatively small purlin spacing. If you have a low pitch roof you might want to look at other profiles although Roofing Industries has a deeper corrugated profile suitable for a 4° roof pitch.
  • If someone has to get up there to do maintenance, service the chimney or install a TV antenna, they’ll have to watch where they step, especially if it’s an old house with wide purlin spacings. Foot traffic can cause dents on the sheets which, on top of ruining the look, may create leaks in your roof. Ask for the thicker 0.55mm gage steel, you won’t regret.
Supplier: Steel and Tube
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Supplier: Metalcraft Roofing
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Supplier: Roofing Industries
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Supplier: Roofing Industries
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Supplier: The Roofing Store
Material:
KiwiColour
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Supplier: Diamond
Material:
ColorCote
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years

*Table updated on 27th, December 2018 *Warranties displayed are for moderate environment (typically ISO CAT 1-3).

Trapezoidal

Trapezoidal long run roofing profiles are also very popular in Auckland. They suit modern builds really well. These profiles look fantastic on a roof made of single pitch sections with no hips or valleys. For a residential roof, you want to stick to a low-rib roofing profile. Anything deeper than 30mm will make your house look like a warehouse. Most manufacturers have 2 main trapezoidal roofing profile. One with 5 ribs, and one with six ribs. The main difference? The look! 5 ribs profiles look “bigger”. The ribs are further apart and usually taller and wider.

What you need to know about low-rib trapezoidal profiles:
  • Typically manufacturer’s recommend installing trapezoidal profiles on a roof pitch greater than 3-4° with a relatively small purlin spacing. If your roof pitch is under 3° you’ll have to go for a secret fixed trough section to have a chance to get a valid warranty (see next section below).
  • If someone has to get up there to do maintenance, service the chimney or install a TV antenna, they’ll have to watch where they step, trapezoidal profiles are usually easier to dent than corrugated profiles. If it’s for a re-roofing get the thicker 0.55mm steel no matter what! If it’s a new build you might get away with the 0.40mm if the purlin spacing is small enough but the extra durability you get out of the thicker steel will always justify the price difference.
  • In my experience trapezoidal profiles rarely look right on a roof with hips and valleys, unless it’s a really modern build. If you have such a roof and you want a modern look, consider a flat pan secret fixed or seamed profile like Espan or Euroline. It’s expensive but the end result can be spectacular.
Plumbdek Supplied by : Steel and Tube
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Six Rib Supplied by : Steel and Tube
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
T-Rib Supplied by : Metalcraft Roofing
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Metrib 760 Supplied by : Metalcraft Roofing
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Trimrib Supplied by : Roofing industries
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
TRS 5 Supplied by : Roofing Store
Material:
KiwiColour
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
TRS 6 Supplied by : Roofing Store
Material:
KiwiColour
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Veedek Supplied by : Roofing Store
Material:
ColorCote
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
Six Rib Supplied by : Dimond
Material:
ColorCote
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years

Secret-fixed trough section

Secret-fixed trough section roofing profiles are usually not the most aesthetically appealing, although there is a few exceptions. They are mostly used for very low pitch roofs, sometimes called “flat roofs” although they always have a slight fall. Conveniently, in most cases a low pitch roof won’t be seen from the ground, so the looks are not the focus point here

What you need to know about secret-fixed trough section profiles:
  • These profiles are designed to provide the best low pitch performance. There is no exposed fixings and the wide pan combined with a high rib means the roof can handle water building up much better than traditional long-run roofing products.
  • How it works: A bracket is fixed to the purlins. The roofing is then clipped onto the brackets.
  • Typically manufacturer’s recommend installing secret-fixed trough section profiles on a roof pitch greater than 3°. Although you may be able to get a valid warranty for a roof pitch down to 1°, subject to the manufacturer’s approval. As a matter of fact most low pitch roofs on houses built pre-2000’s have a roof pitch under 3°. If that’s your case you might have to jump through a few hoops to get a valid warranty. If your current “flat roof” is pooling water you should consider increasing the roof pitch.
  • Secret-fixed trough section profiles usually handle foot traffic very well. Still you should opt for the thicker 0.55mm steel as it will avoid the pan creasing around the purlins.
HI RIB Supplied by : Steel and Tube

Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
METDEK 500 Supplied by : Metalcraft
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
MULTIDEK Supplied by : Roofing Industries
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
TRS 3 Supplied by : The Roofing Store
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years
DIMONDEK 400 Supplied by : The Roofing Store
Material:
ColorSteel (Made in NZ)
Minimum pitch
Warranty: paint: 18 years/ perforation: 30 years

This page is still under construction. More about Auckland Roofing Products soon!