FAQ

What is American Shingles?

American Shingles is the trading name of American Shingles Pty Limited, which is an Australian owned and operated company. We have a background in the building industry as head contractors and discovered the use of Asphalt shingles after a major hailstorm (May, 1999) here in Sydney.

Where is the company based? Do you service nationwide?

American Shingles has their national office in Alexandria, NSW and is currently servicing all states from this office.

What is the product/material used in shingles?

Shingles are manufactured with a number of materials, but put simply, shingles are a composite of a fibreglass reinforcement mesh, coated on both sides with a waterproof & mineral stabilised asphalt and coated on the surface with ceramic coated opaque granules.

Where are the American Shingles made?

All of the shingles that American Shingles supplies are imported from CertainTeed Corporation in the US. It is unlikely that shingles will be made locally as the capital cost and numbers of plants required for all of the profiles outweighs the Australian market’s demand. CertainTeed shingles are made to meet and typically exceed all relevant ASTM’s and all the shingles including associated accessories are manufactured wholly within the USA.

Why isn’t this product established in the market as a typical roof lining?

Asphalt Shingles have been imported into the Australian marketplace on a small scale by a number of entities over the last 20 years or so. Australia and China are two of the last few markets in the world to adopt asphalt shingles as an alternative roof lining. American Shingles is now offering the Shingle Roofing system as a whole package to inform and educate both the building/roofing contractor and end user about the use of American Shingles supplies.

What are the benefits of shingles over other roof linings? How does this affect the building?

One of the major differences with an American Shingles roof lining is the weight. Our shingles vary in weight from just under 11kg/m2 up to 22kg/m2 laid upon a roof deck. The impact of this can be overall savings in the size of roof framing such as rafters and trusses; and load bearing beams and columns.

The reduced weight can also affect the architecture of the building allowing greater flexibility with regards to placement of external walls and other features.

How are the shingles attached to a roof?

American Shingles are essentially attached to a roof deck utilising a number of mechanical fixings (9.5mm broad headed flat headed roofing nails) centred on the shingle. One row of fixings is utilised for each shingle during installation, but due to overlaps, all shingles will have two rows of mechanical fixings attaching them to the roof deck on completion.

The exposed tabs of the shingles have self sealing strips which, after softening in the sun and under warm temperatures, bond these exposed tabs to the underlying shingles providing the essential wind resistance warranties offered by American materials, faces may seem duller with age due to airborne contaminants and pollutant materials.

What thickness of plywood is used for the roof deck? Do I need to use marine ply?

The thickness of plywood or other panelled product (such as OSB) for the roof deck is determined by two essential factors; the rafter or truss spacing and the weight of the American Shingles roofing profile. American Shingles vary in weight from just under 11kg/m2 up to 25 kg/m2. Please refer to your local codes and span tables from manufacturers of panelled sheet products.

The roof deck should be laid upon the roof frame in accordance with the local timber framing code based on performance requirements.

Marine grade ply is not required to be used as laying of the shingles in accordance with CertainTeed’s specifications will prevent any water from reaching the surface of the plywood unless extraordinary weather conditions prevail over and above limitations set out in the Limited International Warranty offered by CertainTeed Corporation.

How is the roof deck ventilated?

American Shingles recommends the use of ridge vents manufactured. The roof deck is stopped short of the ridge beam allowing a clear throat of 30mm on each side of the Ridge beam. We then fix a venturi ridge vent that operates under the principles of the 'Bernoulli' effect. This vent provides the most efficient way of naturally venting the roof cavity allowing the radiant heat to escape keeping the cavity cooler in summer and prevent condensation on the soffit in winter.

Other methods of mechanical ventilation may be employed to vent the roof space. Please contact your local American Shingles representative with regards to minimum requirements satisfying CertainTeed's specifications.

Why does the roof deck have to be ventilated?

Because we recommend a tongue & groove panel products for the roof deck such as Carter Holt Harvey's Plyroof, it provides a particularly good seal allowing the heat that radiates through the roof plane to be trapped inside. The ventilation allows the radiant heat to be vented from the roof preventing the accelerated ageing of the shingles.

The venting not only keeps the roof cavity cooler in summer, the venting also prevents the condensation of moisture on the soffit of the roof deck in winter. The vent creates ambient moisture and temperature levels to be complimentary with that outside the roof cavity preventing condensation and therefore reducing the lifespan of the deck.

What is the major benefit of a ventilated plywood deck over conventionally laid roofing materials?

The roof cavity is kept cooler in summer and the venting prevents the development of condensation in winter. This also prevents accelerated ageing of the shingles and this is reflected in CertainTeed’s International Warranty.

What happens if I do not vent the roof deck?

Lifespan warranties will only be offered and honoured to a maximum of ten years for any profile selected with inadequately vented roofs.

What is the difference between bitumen and asphalt?

Bitumen or modified bitumen shingles are a lesser grade of by product of the crude refractory process relative to the engineered asphalts used and offered by CertainTeed Corporation and American Shingles. Engineered asphalts with the use of stabilisers will offer warranties typically longer than bitumen such as 50 years in Australia with bitumen typically offering 15-20 years.

Will the colour fade?

The granules that American Shingles offers by CertainTeed Corporation are ceramic coated and are colourfast. That being said, as will all roofing and external cladding materials, faces may seem duller with age due to airborne contaminants and pollutant materials.

Do I need to clean the shingles and how?

There is no real need to clean the shingles any more than with conventional roof linings in Australia. We recommend against homeowners getting onto their roofs without the necessary precautions and statutory safety requirements. If the shingles are from the Premium Range, they will have an Algae Resistant (AR) coating of copper sulphate, which is warranted for up to 15 years. Other shingles can be supplied with an AR coating at an additional cost depending on range.

If cleaning of the shingles is required then contact with American Shingles with the specific requirements which will need to be determined in consultation with CertainTeed Corporation.

How are the shingles supplied?

American Shingles are typically supplied in bundles wrapped in paper for recycling. American Shingle bundles are generally the same weight but due to varying profiles including double and triple laminates (in the case of our Luxury Designer shingles) the covered area within bundles range from approximately 1.8m2 to just over 3.2m2 per bundle.

Please note that all areas quoted by American Shingles with regards to roof linings are covered areas i.e. laid on the roof not shingles laid side by side.

Is the product warranted? For what and for how long?

American Shingles offers a number of profiles manufactured as part of The Roofing Collection. These profiles vary in aesthetics & weight and we offer warranties in the range of 20-50 years against product defects, 100-175km/h for wind resistance and up to 15 years for algae resistance (AR) where applicable.

What profiles do you recommend as an option to slate?

Profiles are varied and there a number that are symmetrical in their finish. The aesthetics and appeal of the shingles are based on individual taste, but our most popular and best value for money shingle profile is the Hatteras shingle. This profile has an exposed tab of approximately 200mm x 200mm, 15 Year algae resistance, 40 year and 175 km/h wind resistant warranty.

What is the most popular profile and why?

The Independence profile is our most popular profile. It has all the properties of a premium grade shingle (50 year manufacturing defect warranty, 175 km/h wind resistant warranty and a 15 year algae resistant 'AR' warranty). From a cost point of view it is priced in the mid range of our offered asphalt shingle profiles.

What is the difference between a single and a double laminated shingle?

Shingles are made out of a composite sheet material being fibreglass, waterproofing asphalt and ceramic coated mineral granule.

Depending on the finish required, the shingles could be either symmetrically cut to provide simple patterns or laminated to provide a greater depth to the shingles producing a random effect such as that displayed when timber shingles are laid.

What do I do if I have a plan to price?

All plans can be presented to American shingles for pricing. We are happy to service customers by receiving roof plans with noted dimensions and pitch details. We can provide comparative price including all components and accessories required to fix an American Shingles to your dwelling. Contact Us