Full Fill Cavity Wall Insulation



Wall insulation is the process of using insulation material on a solid or cavity wall to reduce heat loss through the wall. Having wall insulation prevents heat loss from the wall during the cold season, but it also reduces the strain on air conditioning systems during the summer. One of the main benefits is the improvement of thermal comfort, as well as the reduction of energy consumption which will lead to lower energy bills. On top of that, it has a huge impact on your CO2 emissions.

Purpose of Insulation

The main purpose of using insulation is to reduce the transfer of heat via walls, roofs, or floors. How well an insulation material resists heat flow is measured by its Resistance value, also called the R-value. The insulating capability (how the insulation material resists the heat flow) depends on the insulation material type and the thickness of the insulation.

wall insulation

Advantages of Wall Insulation

 ✓ Reduction of heat loss: wall insulation keeps heat inside during the winter and outside during the summer.

✓ Reduction in energy bills: less energy required for heating and cooling the home. 

✓ Helps in mould prevention: good quality insulation reduces the risk of moisture issues and the growth of mould.

✓ Reduction of Carbon Footprint: It has a huge impact on the reduction of your carbon footprint. Installing 4 million homes with insulation is equivalent to the carbon dioxide reduction as planting 667 million acres of trees.

✓ You may be eligible for the Green Homes Grant government scheme for making improvements to your home. For more information, visit www.gov.uk to find outhow much you can save.

There are three types of wall insulation: cavity wall insulation, external solid wall insulation and internal solid wall insulation. Modern houses are equipped with cavity wall insulation. An overview of these types and their benefits are shown below.

Cavity Wall Insulation

Cavity Wall Insulation

The most commonly used insulation method is cavity wall insulation. The cavity is the space between the external and internal walls.. Cavity wall insulation is the process of filling the cavity with insulation by using materials such as Polyisocyanurate (PIR)Glass wool, or EPS. Cavity wall insulation also prevents moisture from entering the home. Modern houses are built with insulation boards (insulation panels) from leading manufacturers such as KingspanCelotexXtrathermEcothermRecticel, and IKO. If an existing house with a cavity wall is not insulated, using a spray foam insulation is another option.

The price of cavity wall insulation mainly depends on the thickness of the cavity and the size of the house. The accessibility of the home, the condition of the cavity, and the condition of the facade also play a major role. For example, any cracks on the wall need to be fixed before cavity wall insulation can be placed.





Most Popular Cavity Wall Insulation

    Celotex Cavity Wall CW4000

    EcoTherm Eco-Cavity

    Kingspan Kooltherm K108

    Recticel Eurowall Cavity Insulation

    IKO Enertherm ALU Universal Rigid

    Knauf DriTherm Cavity Slab 37

    Knauf DriTherm Cavity Slab 32

External Solid Wall Insulation

External Solid Wall Insulation

External wall insulation is not the cheapest option. However, if there is no cavity between the internal and external walls, it is recommended to use external wall insulation. The advantages of having external wall insulation include having no limitation on insulation thickness, not losing interior space, and getting a brand new exterior wall. The flip side of this method is the additional cost that is involved in covering the insulation board or any other insulation material outside. 

Most Popular Solid External Wall Insulation

Kingspan Kooltherm K5

Celotex TB4000

EcoTherm Eco Versal

Internal Solid Wall Insulation

Internal Solid Wall Insulation

Placing insulation on an internal wall has few disadvantages including the loss of interior space. Insulating external walls from inside of the house can be done in three ways:

  • Placing a wooden or metal grid against the supporting wall and filling it with insulation.
  • Using insulated plasterboards such as Kingspan Kooltherm K118 or Celotex PL4000, which allows insulation to be installed without a wooden or metal grid.
  • Using a Spray Foam.


How do you install insulated plasterboard




4 Most Popular Insulated Plasterboard

    Kingspan Kooltherm K118

    Celotex PL4000

    EcoTherm Eco-Liner

    Recticel Eurothane PL

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