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Why Is the Fiberglass Insulation Black in My St. Johns Home?

Why Is the Fiberglass Insulation Black in My St. Johns Home?

While fiberglass insulation is the most common type of insulation use in residential buildings, it doesn’t come without its own share of problems. In particular, it’s important to watch for the fiberglass to turn black. 

When you do see black spots appearing in your home’s insulation, you’ll have to contact a professional insulation contractor. They will remove and replace your existing insulation for you.

When Black Insulation Isn’t as Serious as You Think

In some situations, seeing that your attic insulation has turned black can alert you to a minor problem. The black discoloration can be the result of airflow contaminating the insulation with dust and debris. 

In this situation, it’s likely that the insulation wasn’t installed properly. There may also be pests nesting in the insulation, bringing in more debris and leaving droppings.

When there are gaps between the insulation and your attic walls, the air that passes through these areas will carry contaminants and allergens. An insulation contractor will still have to replace these segments of insulation, but you may not need to change out all the insulation in your attic unless the problem is more widespread.

Black Mold Requires More Immediate Care

If your fiberglass insulation was improperly installed, the gaps behind the insulation will provide a place for moisture to gather. Over time, this moisture will combine with the humidity in your attic to provide the perfect breeding ground for black mold

The mold will cause your wood to rot and contaminate the air in your home. If your family suffers from respiratory problems, this may be the cause.

If your insulation has turned black as a result of mold growth, your insulation contractor will need to remove the fiberglass insulation in its entirety. 

The underlying wood may also need to be replaced, depending on how far the mold growth has advanced. After the underlying wood has been cleaned and dried, or replaced, your contractor can install new insulation.

Why More Homeowners Are Replacing Fiberglass with Spray Foam Insulation

While there’s a higher upfront cost with spray foam insulation, it will save you more money in the long run. This type of insulation lasts longer, which means you won’t have to replace it as frequently as fiberglass insulation. It can also work as a sound barrier, providing more benefits if your home is in an area with high levels of noise pollution.

The most desirable benefit of foam spray insulation is that it forms a more cohesive bond with your attic’s walls. This bond means there’s a much lower risk of moisture getting into your home. Unwanted airflow will also be reduced, making it harder for pests and debris to get into your attic. The risks of mold growth are similarly reduced.

It’s important to avoid delays in replacing black fiberglass insulation. Leaving contaminated insulation on your home can lead to wood damage and health hazards for your family. You’ll also save more money on energy usage when you invest in new insulation.


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