How Long Does Insulation Last?
It’s no secret insulation is an important part of your home. It plays an important role of maintaining the inside of your home at an even temperature year-round and offering energy efficiency. Many people wonder how long and insulation actually lasts. In older homes you may notice areas in your home that are extra drafty, or simply don’t hold the same temperature as the rest of your home. Are you seeing sky-rocketing energy bills or mold in your attic or crawlspace? These are all indications that you may have old or inefficient insulation.
How long Insulation lasts depends on several factors including the quality of the installation, the type of insulation you use, and the environment the insulation is placed in. Here are some interesting facts about the history of insulation.
Early Insulation Techniques
Nearly 5,000 years ago, fiberglass insulation which is commonly used today was not invented but people wanted to be comfortable so they used a variety of materials to protect their homes from the outside weather. They were insulated with animal hair, hay or straw, and even moss. This assisted in creating a certain level of insulation but it was far from perfect. These organic materials were prime homes for mold and mildew as well as rodents and snakes. These insulation properties wore out over a short period of time and would constantly need to be redone.
In the 19th century, advancements in technology allowed mankind to produce something far more effective in terms of insulation. These materials were cork, asbestos, and fiberglass. While these materials were definitely more durable and less prone to Critters as the ancient techniques were, it was found later that asbestos causes cancer and that fiberglass can irritate the lungs and skin if there is prolonged and direct contact.
Modern Insulation Materials
Now we have a wide range of insulation materials available to use. Each one carries different advantages and a much longer lifespan. Here are some of the most common types as well as how long you can expect them to last.
Fiberglass is extremely popular and affordable. It comes in various forms including bats and loose fill. it has a lifespan of around 80 to 100 years but factors such as humidity and compression can definitely reduce its Effectiveness over time.
Mineral wool is an insulation material which is made from rocks or wool and is fire resistance and soundproof. Its lifespan is between 50 to 100 years. it is more expensive but plays an important role where it is used.
Spray foam is another type of insulation which is applied as a liquid and as it dries it expands to fill cavities and crevices around your home. This type of insulation has a lifespan of also 50 to 100 years and provides a really great air seal and is excellent for compact areas such as walls of older homes with thin studs or metal buildings. It is also commonly used in crawl spaces during encapsulations.
Cellulose is a less common type of insulation made from recycled paper. it is seen as sustainable and effective but carries a shorter lifespan of 20 to 30 years and can easily be damaged by moisture. it is also known for being a breeding ground for pests.
Factors Affecting Insulation Lifespan
Several factors can affect the lifespan of insulation:
- Installation Quality: Proper installation is critical for the effectiveness and lifespan. Poorly installed insulation can lead to gaps and voids, reducing its insulating properties.
- Environmental Conditions: Moisture, pests, and extreme temperatures can damage insulation and shorten its lifespan. For example, It’s important to have proper moisture control in your crawl space.
- Maintenance: Regular inspection and maintenance can help identify and address any When to Replace Insulation
The need to replace insulation depends on several factors, including the type of insulation, its age, and its condition. As a general rule, most insulation materials will last for several decades. However, if you notice any signs of insulation failure or if your energy bills are increasing, it may be time to consider replacing your insulation.Vance insulation has over 60 years of experience helping a homeowners protect their homes and provide Comfort through insulating and moisture control techniques. Give us a call for a free estimate and evaluation of the needs of your home.
