Cavity Wall

A strong cavity wall provides better thermal insulation than solid walls. In addition, the space between two leaves of cavity walls is full of air, reducing heat transmission into the building from outside.

In addition, cavity walls are economically cheaper than solid walls, and the moisture content in the outer atmosphere is not allowed to enter because of the hollow space between the two walls. Therefore, they also prevent dampness.

They also act as good sound insulators, and they also reduce the weights on the foundation because of their lesser thickness.

Finally, outer efflorescence is also prevented.

Why Is It Important To Insulate A Cavity Wall?

It is essential to insulate a cavity wall because it helps to keep the home warm. The insulation prevents heat from escaping and thus keeps the house at a comfortable temperature. Additionally, insulation can help to reduce noise pollution.

How Does Cavity Wall Insulation Work?

Cavity wall insulation works by filling the space between the two wall layers with material that prevents heat from escaping.

The most common type of insulation is fibreglass, but there are other options.

Insulation is typically installed by a professional, and it is essential to follow all instructions carefully to ensure that the job is done correctly.

Two Types Of Cavity Wall Insulation

Nowadays, there are two main types of cavity wall insulation: fibreglass and rock wool. 

  • Fibreglass

Fibreglass is the most common type of insulation, and it is made from glass fibres that are spun into a mat. 

  • Rock wool

Rock wool is less common, but it is made from rocks that have been melted down and spun into fibres. Both types of insulation effectively prevent heat from escaping, but rock wool may be more effective in frigid climates.

How Do You Build A Cavity Wall?

Building a cavity wall is not difficult, but it does require some planning and attention to detail. Here are the steps:

  1. Choose the right location for your wall. The wall should be in a spot that gets plenty of sunlight.
  2. Excavate the area for the wall, making sure to dig deep enough so that the bottom of the excavation is level with the ground around it.
  3. Pour concrete into the excavation, using a trowel to smooth it out as you go.
  4. Place bricks or stones into the wet concrete, packing them tightly together.
  5. Continue adding rows of bricks or stones until the wall is tall enough.
  6. Fill in any gaps between the bricks or stones with mortar, using a trowel to spread evenly.
  7. Allow the mortar to dry for at least 24 hours before continuing.
  8. Once the mortar is dry, you can begin filling the cavity with insulation.
  9. Use a piece of cardboard or other material to cover the cavity and secure it in place with tape or other means.
  10. Check the wall regularly to ensure that there are no gaps or openings that need to be filled.

What Are The Materials Needed For A Cavity Wall?

To build a cavity wall, you will need the following materials:

  • bricks or stones
  • concrete
  • mortar
  • insulation
  • cardboard or other material to cover the cavity
  • tape or other means of securing the material in place.

What Are Some Of The Disadvantages Of Cavity Wall Insulation?

One disadvantage of cavity wall insulation is that it can be challenging to install. Therefore, it is crucial to hire a professional to do the job and make sure that they follow all instructions carefully. 

You can check out Utility Bidder for additional assistance.

Additionally, cavity wall insulation can be expensive, and it may not be worth the cost if you live in a not particularly cold climate. Finally, if the insulation is not installed correctly, it can cause problems such as mould growth.


Originally posted 2022-06-16 18:49:18.