Home Insulation Services

Loft and Cavity Wall Insulation Northern Ireland

Making Homes Warmer Across Northern Ireland Through Loft And Cavity Wall Insulation

Home insulation is the first step to a warmer home.

Home insulation services is the process of trapping heat inside a property, covering areas exposed to the outside. Without insulation, indoor temperatures are difficult to maintain. 

Loft Insulation

Insulating your loft, attic or flat roof is a simple and effective way to reduce heat loss and reduce your heating bills.

Loft insulation makes it difficult for heat to pass up through the roof due to the added layer. This layer of insulation has lots of air pockets that trap heat. 

Did you know loft insulation can save you 15-20% on your energy bills once installed? 

Moreover, loft insulation is effective for at least 40 years and it should pay for itself many times over.

Green warm house

Keep The Heat Inside Your home

Money Saving

Significant Savings On Your Energy Bills

Immediately Effective

Immediately Effective

Engineer laying down insulation in attic space

Some points to consider when thinking of installing loft insulation:

Storage Space – If you plan on using your loft or attic as a storage space, boards will need to be placed over the joists.

Ventilation – Air flow is needed to keep your property fresh, dry, and healthy.

Cavity Wall Insulation

Insulation helps to create a constant comfortable living environment by increasing the energy performance of your home, keeping it warm.


A cavity wall is made up of two walls with a gap in between, known as the cavity; the outer leaf is usually made of brick and the inner layer of brick or concrete block.


Uninsulated cavities can add up to 25% to your heating bill. Insulation is a fairly simple process and is effective for many years. Therefore, by properly insulating cavity walls, you will save energy and cut the cost of your heating bill.


Click Here for more information on cavity wall insulation.

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Continuous energy supply graphic

Save Energy

Continuous energy supply graphic

Reduce Your Heating Bill

Lower your carbon footprint

Lower Your Carbon Footprint

Engineer installing Cavity Wall Insulation outside a property

Some points to consider when thinking of installing cavity wall insulation:

In general, houses built from the 1990s onwards have wall insulation to keep the heat in. Although, if your house is older than that, it may not have any wall insulation at all.

Houses in the UK mostly have either solid walls or cavity walls:

  • Moreover, If your house was built after the 1920s, it is likely to have cavity walls.
  • Pre-1920 older houses are more likely to have solid walls. A solid wall has no cavity; each wall is a single solid wall, usually made of brick or stone.

Home Insulation Services FAQs

How Often Do You Need To Replace Insulation?

Loft insulation loses its effectiveness as it ages. Therefore, insulation should be replaced after 15 years to ensure it is still fully functioning.

Generally, you do not need to replace cavity wall insulation. There is no reason for the insulation to degrade. Although, if property alterations are carried out, the insulation may need to be topped up or replaced.

How Does Insulation Work?

Insulation works by reducing the amount of heat lost from your home. Therefore, reducing the amount of fuel you depend on to heat your home, ultimately saving you money.

How Do I Know If My Loft Insulation Needs To Be Replaced?

If your loft is damp or has a leak, you will need to replace any insulation affected – As most types of wool insulation become immediately ineffective when in contact with damp.

It is recommended that loft insulation to be replaced after 15 years to ensure it is fully effective.

Is It Really Beneficial To Insulate?

There are many, many benefits of insulating your property.

1. Increase the comfort of your home.

You have a warm cozy home as heat cannot escape.

2. Reduce your impact on the environment.

As you are reducing your consumption of thermal energy,  fewer carbon dioxide emissions are released into the atmosphere.

As a result, insulating your home helps reach a net zero future.

3. Lower energy bills.

Home insulation keeps the heat inside your home, therefore not as much fuel is required to heat your home.

Moreover, insulating your home will pay for itself with the amount of savings you will make!

4. Reduce the amount of heat lost. 

The more thermal insulation your property has, the less you need to depend on heating to keep your home warm.


Choose home insulation services to keep heat in your home with Refresh NI, your One-Stop-Shop for a greener home.