Asphalt Shingle Roofing in Auckland: Navigating the Downside
Weather and Durability Concerns
Asphalt shingles, while popular due for new roofs to their cost-effectiveness, often do not fare as well as some other roofing materials in certain weather conditions. In Auckland, with its diverse climatic conditions, these shingles can be susceptible to:
- Wind uplift: Strong winds can potentially lift the shingles off, especially if not installed properly.
- Moss and algae: The humid conditions, like in suburbs such as Point Chevalier, can lead to the growth of moss or algae, which can compromise the roof’s integrity.
- Shorter lifespan: While metal or tile roofs might last 50 years or more, asphalt shingles generally have a lifespan of 20 to 30 years.
Environmental Concerns
Being petroleum-based products, asphalt shingles aren’t the most eco-friendly choice.
- Non-recyclable: Once these shingles reach the end of their useful life, they usually end up in landfills.
- Production footprint: The production process releases greenhouse gases.
Maintenance and Appearance
Though low-maintenance, when issues arise with asphalt shingles, they might require immediate attention.
- Granule loss: Over time, these shingles can shed granules, which may end up in gutters.
- Colour fading: Prolonged exposure to the sun can lead to discolouration.
Temperature Insulation
A key concern for Aucklanders might be the insulation quality.
- Heat absorption: Dark asphalt shingles can absorb a lot of heat, which might not be ideal for keeping homes cool during summer months.
Weight and Structural Issues
While they are lighter than tiles, there can be concerns if installed on a weaker structure.
- Waterlogged: If water seeps under, these shingles can get heavy, risking structural damage.
Comparison with Other Roofing Materials
| Aspect/Features | Asphalt Shingles | Metal Roofing | Tile Roofing | Wooden Shingles |
| Initial Cost | Moderate | Higher | Highest | High |
| Lifespan | 20-30 years | 50+ years | 50+ years | 30-40 years |
| Maintenance | Low | Very Low | Low | Moderate to High |
| Insulation | Moderate | High | Very High | High |
| Eco-Friendly | Low | High | Moderate | High |
Health and Safety Considerations
As with any roofing material, roof installation safety is a priority. The flexibility of asphalt shingles can pose challenges during windy conditions. Inhaling the granules, if shed during installation, can pose health risks. Moreover, aged or improperly installed shingles can be a tripping hazard for those inspecting the roofs.
Other Roofing Options and their Utilisation in Auckland
While asphalt shingles are a common choice worldwide, in Auckland suburbs, locals often lean towards roofing options that align with the city’s weather and aesthetic preferences. For instance, homes in Point Chevalier often sport traditional tile roofs or modern metal roofing to match the architectural charm of the neighbourhood.
Engaging with a reputable company, like My Roofers Auckland, can ensure that residents receive the best advice tailored to their specific needs and the city’s unique conditions.
Note: This article provides insights based on general observations and practices in Auckland. Always engage with a professional for precise advice and solutions.
Frequently Asked Questions on Asphalt Shingle Roofing
Why is the lifespan of asphalt shingles shorter than other roofing materials?
Asphalt shingles are often made of organic materials and fibreglass, which degrade faster under extreme weather conditions compared to metal or tile roofing materials.
Do asphalt shingles come in different styles and colours?
Yes, asphalt shingles are versatile and come in a range of styles, including three-tab, architectural, and premium shingles. They are also available in various colours to suit different architectural aesthetics.
Can I install asphalt shingles on my old roof?
While it’s possible, it’s generally not recommended. Installing over an old roof might not address underlying issues, and the additional weight could be problematic.
How do asphalt shingles fare in rainy conditions, like in Auckland?
In areas with frequent rains, there’s a potential for algae or moss growth on asphalt shingles. However, many modern shingles come treated with algae-resistant coatings.
Are asphalt shingles fire-resistant?
Most asphalt shingles are classified as Class A fire-rated, meaning they are highly resistant to fire. It’s essential to check the fire rating when purchasing.
Is it expensive to repair or replace asphalt shingles?
While individual shingle replacement can be relatively inexpensive, costs can add up if a large portion of the roof needs repair. Regular inspections can help in early detection of issues, saving on significant repair costs later.
How do asphalt shingles compare in weight to other roofing options?
Asphalt shingles are relatively lightweight compared to tile roofs but are heavier than metal roofing options.
How do I maintain an asphalt shingle roof?
Routine inspections, cleaning off debris, preventing moss and algae growth, and ensuring proper attic ventilation are essential steps in maintaining an asphalt shingle roof.
Can I walk on an asphalt shingle roof without damaging it?
While it’s possible to walk on an asphalt shingle roof, it’s essential to tread carefully to avoid causing damage. It’s also vital to ensure safety measures are in place.
What makes asphalt shingles a popular choice despite the disadvantages?
Their cost-effectiveness, versatility in design, and ease of installation make them a favourite choice among homeowners, even with the known drawbacks.