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A Comprehensive Guide on When to Replace Your Home Insulation

Insulation is vital in maintaining the energy efficiency and comfort of your home. It helps to regulate temperature, reduce noise, and prevent moisture and air infiltration. However, over time, insulation can become worn, damaged, or outdated, decreasing effectiveness. That’s why knowing when to replace your home insulation is important. This comprehensive guide will provide information on determining if your insulation needs to be replaced, the different types of insulation available, and tips on properly maintaining and installing insulation.

When to Replace Attic Insulation?

Attic insulation is crucial in maintaining your home’s temperature and energy efficiency. It is important to keep an eye on the condition of your attic insulation and replace it when necessary. Here are some guidelines to help you determine when to replace your attic insulation based on the type of insulation you have:

1. Fiber Glass Insulation

Fibreglass insulation is a popular insulation used in homes for many years. It is made of tiny glass fibres woven to create a fluffy material. The lifespan of fibreglass insulation can vary depending on the quality of the product and the conditions it is exposed to. Generally, fibreglass insulation can last up to seven to ten years if properly installed and maintained. However, if the insulation becomes wet or damaged, it can lose effectiveness and must be replaced sooner.

2. Blown-in Insulation

Blown-in insulation is another common type of loose fibres or particles blown into the attic space. This type of insulation is typically made of cellulose or fibreglass materials. The lifespan of blown-in insulation can also vary depending on the quality of the product and the conditions it is exposed to. Generally, blown-in insulation can last up to ten to 15 years. However, if the insulation becomes compacted or settles over time, it may need to be topped off or replaced.

3. Spray Insulation

Spray insulation is a newer type applied as a liquid and then expands and hardens into a solid foam. This type of insulation is typically made of polyurethane or a similar material. Spray insulation can last a lifetime if installed correctly and not exposed to extreme conditions. It also provides excellent air sealing properties, which can improve energy efficiency and indoor air quality.

What to Do If the Insulation Gets Wet? 

If insulation gets wet, it can become ineffective and need replacement. Here are some steps to take if your insulation gets wet:

1. Identify the source of the water and repair any leaks or damage.

2. Remove any wet insulation and dispose of it properly.

3. Allow the area to dry completely before installing new insulation.

4. Consider using moisture-resistant insulation, such as closed-cell spray foam or rigid foam board.

5. If the water damage is extensive, hire a professional to assess the damage and make any necessary repairs.

It is important to address wet insulation promptly to prevent mould growth and other potential health hazards. Regular inspections and maintenance can also help prevent water damage to your insulation.

What Is the Process of Insulation Removal? 

Insulation removal can be messy and time-consuming, but ensuring your home is insulated correctly is necessary. The first step is to identify the type of insulation that must be removed and whether it contains hazardous materials. If hazardous materials are present, it is essential to hire a professional contractor to ensure safe removal.

Once the type of insulation has been identified, the removal process can begin. This typically involves using a vacuum or blower to remove loose insulation or manually removing batts or sheets. The removed insulation will then need to be disposed of properly.


Proper insulation is essential for maintaining your home’s energy efficiency and comfort. Knowing when to replace your home insulation is crucial in ensuring your home remains well-insulated, safe, and comfortable. By following these guidelines, you’ll be able to ensure that your home can maintain a comfortable temperature without wasting energy or money. If you suspect that your insulation needs to be replaced or removed, it is best to consult with a professional contractor who can assess your home’s needs and recommend the best course of action.

Ready to improve your home’s energy efficiency and comfort? Look no further than PolarTech Spray Foam, your trusted residential insulation company in Saskatoon. Contact us now to get started!

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