Cavity Wall Insulation Problems | Faulty Insulation

What is Cavity Wall Insulation?

Cavity wall insulation is used to reduce heat loss from a building by filling the cavity between the inner and outer walls with insulation material. However, there are instances where cavity wall insulation can fail, and it is important to understand the reasons why it can fail and how it can be installed incorrectly. In this article, we will discuss the reasons why cavity wall insulation can fail, how it can be installed incorrectly, and why you should consider getting it removed.

3 Reasons Why Cavity Wall Insulation Can Fail

1. Dampness

One of the main reasons why cavity wall insulation can fail is due to dampness. Moisture can enter the cavity through gaps in the brickwork or through the wall ties, and if there is any moisture present in the cavity, it can cause the insulation material to become damp, which can reduce its effectiveness. This can lead to heat loss and an increase in energy bills.

2. Incorrect Installation

Another reason why cavity wall insulation can fail is due to incorrect installation. If the insulation material is not installed properly, it can create gaps in the cavity, which can allow air to flow through and reduce the effectiveness of the insulation. Additionally, if the insulation material is not installed at the correct density, it can cause the insulation to sag or settle over time, which can lead to gaps and reduced effectiveness.

3. Poor Quality Insulation Material

The quality of the insulation material can also impact its effectiveness. If the insulation material is of poor quality, it may not provide the level of insulation required, which can lead to heat loss and an increase in energy bills. Additionally, poor quality insulation material may break down over time, which can lead to gaps in the insulation and reduced effectiveness.

How Cavity Wall Insulation can be Installed Incorrectly

1. Bridging

Bridging occurs when the cavity wall insulation material is not cut to fit around obstacles, such as pipes or electrical cables. This can create gaps in the insulation, which can allow air to flow through and reduce the effectiveness of the insulation.

2. Overfilling

Overfilling occurs when too much insulation material is installed in the cavity, which can cause the insulation to become compressed and reduce its effectiveness. Additionally, overfilling can cause the insulation material to expand and push against the external wall, which can cause damage.

3. Underfilling

Underfilling occurs when there is not enough insulation material installed in the cavity, which can create gaps and reduce the effectiveness of the insulation. Additionally, underfilling can cause the insulation material to settle over time, which can lead to gaps and reduced effectiveness.

Why you should consider getting your Cavity Insulation removed

1. Dampness and Mould

As mentioned earlier, dampness is one of the main reasons why cavity wall insulation can fail. If the insulation material becomes damp, it can create a breeding ground for mould and bacteria, which can lead to health problems, such as respiratory issues.

2. Structural Damage

If the insulation material is installed incorrectly, it can cause structural damage to the property. For example, if the insulation material is overfilled, it can cause the external wall to bow, which can lead to cracks and damage to the structure of the property.

3. Increased Energy Bills

If the insulation material is not installed correctly or becomes damp, it can reduce its effectiveness, which can lead to an increase in energy bills. Additionally, if the insulation material is not providing the required level of insulation, it may

Frequently Asked Questions

Q. Why might I need cavity wall insulation extraction?

A. Cavity wall insulation extraction may be necessary if the existing insulation is causing problems such as dampness, mould growth, or reduced insulation effectiveness. It may also be required if the insulation was installed incorrectly or with faulty materials.

Q. How is cavity wall insulation extraction carried out?

A. The extraction process typically involves drilling small holes in the external wall of the building and using specialist equipment to remove the insulation material from the cavity. The extracted material is then disposed of in an environmentally responsible manner.

Q. Is cavity wall insulation extraction a messy process?

A. The extraction process can be messy, as small amounts of insulation material may escape through the holes drilled in the external wall. However, a professional insulation removal company will take steps to minimize the mess and clean up any debris after the job is complete.

Q. How long does cavity wall insulation extraction take?

A. The duration of the extraction process will depend on the size of the building and the amount of insulation material that needs to be removed. In general, a typical house can be completed in one to two days.

Q. Can I get a grant for cavity wall insulation extraction?

A. There may be financial assistance available for cavity wall insulation extraction through government schemes or utility companies. However, eligibility criteria and available funding can vary depending on location and other factors.

Why it’s important to use professionals

It is important to note that cavity wall insulation extraction should only be carried out by a professional insulation removal company, as it can be a complex and potentially dangerous process. Additionally, it is important to ensure that the insulation material is removed correctly and that any damage caused during the extraction process is repaired to prevent further problems.

Insulation Problems