One of the most important traits to be considered when choosing a new roofing is style is the durability. It is possible to obtain knowledge on how long certain roofing types are expected to last. Being one of the most expensive components of a home, repairing your roofing system is a major aspect of your home renovation budget. Knowledge of your roofing system’s life span is also helpful when planning to purchase a housing property. How long does a new roof last? How often do you need to replace your roof? For how long will the roof be good? When do you need to replace your roof next? This post seeks to answer these questions, exploring roofing lifespan depending on the material used.
Factors that Cause Roofs to Wear Out
How long a roofing material lasts on your house normally depends on a number of factors. Such factors include:
Different roofing materials react differently to environmental factors. Metal (e.g. tin, copper) is one of the most durable roofing materials since it can effectively withstand rain, hail and snow. Reflection of heat is another material property that determines roof lifespan. Materials that easily reflect heat and UV rays typically last longer than those that don’t.
Climate and Weather Conditions
Besides materials, weather and other environmental factors could shorten or lengthen material lifespans. Humid climates and those experiencing heavy rainfall can reduce the material’s lifespan by up to 20%. Exposure to the sun also wears down materials over time. Slate reflects much of the sunlight that falls on it, and may, therefore, be most suitable for areas that experience extensive exposure to the sun.
The color of material used in making the roof also affects its rate of aging. Darker colors tend to absorb more heat. Heat is a major cause of roof breakage and, thus, more repair and maintenance needs. Lighter colors reflect heat and significantly extend the roof’s lifespan. For increased lifespan, we can pair darker shades with stronger materials such as shingles and metal.
Roofs with a gentle slope tend to degrade faster. Gentle slopes retain more moisture, thus roofing materials get saturated with water. This moisture causes degradation through breakage and moss buildup.
Ventilation and Insulation
Improper ventilation and insulation of roofing spaces results in poor temperature control, thus resulting in roofing defects such as blistering, breakage and punctures. These defects cause wear and tear in the roof.
Installation and Maintenance
Most roof failures are a result of poor workmanship. Installation defects and poor maintenance lead to roof deterioration which necessitates repairs and replacement.
Roofing material lifespan
The roofing material is the main factor that determines how long a roofing system will last. This section outlines the expected lifespan of various common roofing materials.
Being the most economical option, asphalt shingles are the most popular roofing materials in housing projects. The average lifespan for shingle roof is between 15 and 30 years. Specific lifespan depends on such factors as installation, slope and quality of shingles used.
Composite shingles are a high quality product due to the assortment of roofing materials. Most composite roofs last between 30-50 years, which is better compared to asphalt shingles. Some manufacturers of composite roofs actually guarantee that they last a lifetime.
One of the most costly roofing options, tiled roofing is worth every penny. With proper care and maintenance tiled roofs can last up to 50 years, with the average lifespan ranging between 35-50 years.
Besides weight and speed of installation, metal roofs offer the distinct advantage of durability. Aluminum and steel roofs typically last up to 50 years, while Zinc and Copper sheets could reach 100 years. Paint coating on the sheets could provide increased durability.
Cedar Shake Roofs
On average, a cedar-shake roof is expected to last between 30 and 40 years. Like most, the actual lifespan varies depending on factors such as the presence of overhanging trees and climate.
We have outlined the various factors that determine a roof’s lifespan, and the expected lifespans of various roofing materials. This post can, therefore, serve as a guide when deciding on the repair schedule of your house’s roof.
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