FAQ

If you have any questions that are not covered in this area, please feel free to contact us.

 


 

 What are the Metrotile Performance Guarantees?
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Hail Resistance

Metrotile Steel Roof Tiles achieve the highest UL 2218 rating for hail impact resistance in the United States.

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High Wind Resistance

Metrotile Steel Roof Tiles are engineered to withstand high wind uplift forces and perform well in the “Very High Wind Zones” (VHWZ) of coastal New Zealand.

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Lightweight

Metrotile Steel Roof Tiles are a lightweight interlocking roof system, with uncompromising strength.

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Fire Safe

Metrotile Steel Roof Tiles are classified as a “Class A” Fire Rated, non combustible roofing material, in the United States.

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Earthquake

Metrotile Steel Roof Tiles are an interlocking roof system. The tiles are individually fixed and are less likely to fall through the ceiling during an earthquake.

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Marine Environments

Metrotile roof tiles are suitable for all marine environments and are backed by our warranty.

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Protection from the Sun

Metrotile Roof Tiles incorporate “state of the art” acrylic coating technology and have been tested in one of the most severe UV climates in the world – New Zealand.

 
Sustainability

Engineered from high grade Zincalume coated steel, a Metrotile roof is one of the most recyclable and sustainable building products in the world.

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70 Years Roofing Experience

As a family business Metrotile’s growth has come from ownership, accountability, knowledge, research and hard work.

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Weather Security Warranty

Full 25 year weatherproof warranty plus a diminishing pro-rata weatherproof warranty for the subsequent 25 years.

 

How long has Stone-Coated Steel roofing been around?

Stone-coated steel roofing occurred during World War II when tar and sand were used to cover galvanized steel bunkers. After the war, the practice was commercialized and the first roofs were produced. Stone coated steel roofs have been protecting buildings since then, but the product technology today bears little resemblance to early practices due to advances in the chemistry of coatings.

 

Can you walk on a steel roof?

Yes. Though some care must be exercised while walking on the roof and you should only place your foot on the flat section on the nose of the tile,roofers walk all over the roof during the installation process.

 

Is a stone-coated steel roof noisy in the rain?

No. The modular tile system and the dead space between the steel roofing panel and the underlay minimize exterior noise even in a rainstorm. The stone-coating also reduces the noise of the rain when it hits the tiles.

 

How will a Metrotile roof stand up to extreme weather?

A Metrotile roof can withstand decades of abuse from extreme weather conditions including wind, heat, humidity and rain. Metrotile has many international test reports and actual field results confirming their products are earthquake, fire and freeze/thaw resistant and can withstand hurricane-forced winds of up to 193kph. With a minimal amount of periodic maintenance a Metrotile roof will provide years of lasting performance.

 

How do the granules stay bonded to the steel?

An acrylic primer is applied to the Zincalume coated steel substrate by the steel mill. Graded, non-oiled stone granules are then embedded in a thick UV resistant water base acrylic polymer. A final layer of acrylic over-glaze is applied on top of the stone before the tiles are cured in an oven at a temperature of 120 degrees.

 

Will a steel roof rust?

The ZINCALUME coated steel has been formulated to give a significantly longer service life than a galvanised coating. The ZINCALUME steel coating combines the corrosive protection of aluminium with the sacrificial protection of zinc, giving the advantages of both metals. The resulting alloy coating enhances corrosion resistance, making it ideal for such applications as roofing. This is why the Metrotile roof system is referred to as “The final Roofing System”, and is backed up with a 50 year limited warranty.

 

Does the colour fade?

The history of Metrotile’s products demonstrates that fading is not a problem. Metrotile uses either naturally coloured or ceramic coated stone granules on their tiles. The natural stone cannot fade and the ceramic coated stone is manufactured with the highest quality pigments and fired at temperatures above 700 deg Celsius. Over time, a slight change in colour may occur due to settling of airborne contaminants. However periodic rain or washing the roof with a garden hose will keep the roof looking new.

 

I’m concerned about the environment. Is the roofing material recyclable?

Yes, over sixty percent of most metal roofing materials are recyclable. Other roofing products are made of non-recyclable material.

 

Is a steel roof fire safe?

Steel roofing is classified as a non-combustible roofing material (Class A). In new construction and in many re-roofing applications the metal roofing system is a Class A non-combustible roof assembly. That means it is the most resistant to fire.

 

What about energy efficiency?

Metal roofs have a high reflectivity, which contributes to the overall energy efficiency of your home.

 

Can I drink water from my roof?

Yes, rainwater collected from Metrotile roofs is safe to consume. After your new roof has been installed you need to wait for two good rainfalls before beginning collection.

 

What is the installed weight of a steel roof in comparison to other products?

PRODUCT

Weight/m2

Metrotile Steel panel

7 kg

Standard (3-Tab) Asphalt Shingles

15-25 kg

Clay / Concrete Tiles*

46 kg

*Note that the weights for clay and concrete products are for dry weights and that the weight of these products increases when wet.

 

Are steel roofs more susceptible to lightning strikes?

Steel roofing is no more susceptible to lightning than other roofing materials. It has been demonstrated that lightning strikes most frequently the highest points of terrain. Where concerns exist, lightning rods can be installed on roofs that are the highest point of surrounding terrain.

 

Does Metrotile offer a warranty?

Yes, when installed to the required standards and with the required maintenance Metrotile roofs can carry a warranty of up to 50 years. A five year installation warranty is also offered by the installers.

 

Why do people choose a Metrotile roof?

Metrotile was founded by the Ross family who have over 70 years experience in roofing. Metrotile is now a global supplier with roofs now installed in over 80 counties around the world. Metrotile’s design focus is on simple, functional products that provide fast install times and an aesthetic look to suit any architecture. Metrotile ensures that their distributors are experienced and trustworthy companies that are able to provide professional advice with a complete back-up sales service so that homeowners are completely satisfied with their new roof.