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Thursday 23 November 2017
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What is Cavity Wall Insulation?

Did you know that around 35% all the heat lost in an un-insulated home is through the walls? Insulating cavity walls reduces heat loss and can save you around £140* a year on your fuel bills. If your home was built from 1920 on wards, the chances are that its external walls are made of two layers with a small gap between them and this means they are cavity walls. Cavity wall insulation is one of the most cost effective ways to save energy & money at home as well as it will help you to heat your home more efficiently and will produce less CO2. One of the great ways to save money on your energy bill and fight climate change.

If your home was built in the last 20 years it is likely that the cavity is already insulated. Insulating your cavity walls means filling that gap between the two layers of bricks. Once those layers of bricks filled it will slows down the rate at which it escapes, keeping as much of it as possible inside your home for as long as possible.

Cavity Wall Insulation makes it much more difficult for heat to pass through your walls.

Filling cavity walls is a technical jobs and required special skills and only approved installer should be able to do process. We will drill small holes 22mm diameter into the outside walls of the house then Use specialist equipment to blow insulating material into the walls. Insulating material will create an affect in the cavity which means much less heat is able to escape and you won’t have to keep your heating for loner period. It is advisable to remove ornaments from walls and window as Process might cause some vibration. Once your house is installed we will provide you 25 years guarantee for material and workmanship leaving you peace of mind and a warmer home.

How cavity wall insulation works

Benefits of cavity wall insulation

  • Reduction in Heat Loss
  • Significant Cut to Your Heating Bill
  • Quick & Cost Effective
  • Home Will Be Warm Very Quick
  • No Need To Leave Heating On For Longer Period
  • Reduce CO2
  • Comfortable Living Environment
  • Better Winter & Summer Temperature
  • Better Fuel Consumption
  • Improve Energy Rating
  • Save Money On Your Energy Bills
  • Help To Save The Environment

FAQ

What is The Green Deal ‘Golden Rule’ ?

What are the benefits of cavity wall insulations?

What is cavity wall insulation?

How will the cavity wall insulation be insulated?

Do I have to do any thing before the insulation?

Does the technician have to come to the house?

Is there much mess?

How do I know the walls are full?

What about filling holes?

But my house has painted areas?

What if there is damp?

How long will the insulation last?

What about the ventilators that’s are in the external walls?

When will I receive the Guarantee?

Will my house be warmer?

What is the loft insulation?

What happened to the item stored within the loft?

How is the loft insulation insulated?

What happened to the store items after the insulation?

How long does it take?

Do I need to provide any thing?

Is there much mess?

What is The Green Deal ‘Golden Rule’ ?

Before any work is carried out on a property under the Green Deal or ECO (Energy Company Obligation), it will be assessed to make sure it meets ‘The Golden Rule’. This rule stipulates that the cost for installation of the measures should not exceed the expected savings made on a property’s energy bills and the length of the payment period should not exceed the expected lifetime of the measures. What this means is that even though you will be paying your Green Deal loan back through your energy bills, you should still see savings on your monthly outgoings. This will safeguard customers like yourself, ensuring that you get the fairest possible.

What are the benefits of cavity wall insulations?

Around a third of all the heat lost in an un-insulated home is lost through the walls.
Cavity wall insulation is one of the best ways to reduce the amount of energy you need to heat your home.
It could save you around £115* a year on your fuel bills. It also lower the carbon emission from your home by around 610kg* and improve the energy rating on energy performance certificate.

What is cavity wall insulation?

Cavity wall insulation consist of granulate glass wool fibres, treated with inert water repellent and milled down in order for it to be blown into the cavity wall, therefore , creating a quilt-like effect around your home.

How will the cavity wall insulation be insulated?

Cavity wall insulation technicians will arrive at your home and perform a pre-installation check.
The installation process will be in two parts. Firstly, the technicians will drill holes in the mortar in between the bricks of your home, at specific point around each elevation. These holes will be 22MM to 25MM diameter.
The insulation then will be injected in to the holes from the outside (via the machine in the VAN) taking between two to three hours for a three bed semi detached house.

Do I have to do any thing before the insulation?

The drilling process does create some vibration- so it would be wise to remove ornaments, particularly on external walls, for safety and peace of mind.
The technicians the need to gain access all the wall, so he will need to go inside attached garage, lean to shed, conservatories etc.
If you have a wall right on the boundary, you may like to mention it to your neighbour that technicians may need to go to their property

Does the technician have to come to the house?

The technicians must take check before and after the insulations, including any heating appliance, so it is essentials that they access inside the property.

Is there much mess?

The drilling process creates a little dust but the technicians will go around at the end of the insulation and they will clean your house.
It is important to note however, the condition and nature of our weather can at time hamper even the most determined attempts. Please, take the time to speak with the technicians and make sure you are happy with the finished products.

How do I know the walls are full?

This system of cavity wall insulation has a defined pattern of holes, which has been tested by the British board of agreement to verify that it results in a complete fill.
Also, during your survey, the surveyors took measurement of your home including a depth gauge and inspections of the cavity to be filled. From these measurements the technicians know the amount of materials required to correctly fill your walls.
The technicians will, therefore, check and record this data and match this against the quantity of insulation use

What about filling holes?

The technician will fill all the injection holes with mortar to match the existing as closely as possible. He will use a mix that closely matches the existing colour and texture. On pebbledash finishes, he will apply pebbles to the surface to match the existing finish. After weathering, the holes are difficult to see.

But my house has painted areas?

Normally, technician will paint the injection holes. Unfortunately, even if the original paint is used, it may not match due to weathering. So it may be necessary for you to consider painting the area, after the mortar has dried.

You should discuss and agree what will be done with the surveyor.

What if there is damp?

If you have any damp patches on your internal walls then they should not be insulated until the problem is sorted out. You should speak to a builder who specializes in damp prevention about this.

How long will the insulation last?

For the life of the building – the British Board of Agreement say so.


What about the ventilators that’s are in the external walls?

Ventilators supplying combustion air fuel burning appliance must be safeguarded.
Similarly ventilators ground level that ventilate below timer floor must be safeguarded.
The technicians will investigate them to check they are already sleeved.

If they are not, the technicians will remove then and seal around them to stop them being blocked by the insulation, Other vents, which may be redundant, such as cavity vent or vent that are in bedrooms may be closed off. The technicians should discuss these with you, so if you have any questions please ask the technicians.

When will I receive the Guarantee?

The guarantee you will receive is called a “CIGA” (cavity insulation guarantee agency) which guarantee workmanship and materials for 25 years. Installer will directly apply for this guarantee certificate on your behalf and it could take up to 8 weeks for this to be delivered to you after the insulation.

Will my house be warmer?

Insulation dramatically reduces heat loss through the insulated wall therefore you will be able to achieve the same temperature in you home by turning your thermostat down by a little. Your property should still achieve the desired warmth because the house will retain its temperature for longer.
It is also be noted that during the summer the insulated cavity wall prevent some of the suns heat from entering the wall, there , keeping your home cooler.

What is the loft insulation?

Regardless though, it will be delivered into your loft sealed inside plastic package.

What happened to the item stored within the loft?

You must ensure al the items stored within the loft has removed before the technicians’ arrival.
Such its like suitcase, small boxes etc will be moved the technicians but the technicians are not able to move either general or large amount of items.
Please ring us if you not sure or need to more about it.

How is the loft insulation insulated?

The insulation is simply laid between and across the joist and the lost hatch will also be insulated.

What happened to the store items after the insulation?

We must stress that once the technicians have finished, the joists will not be visible and we recommend that you do not access the loft without the use of crawling board and only still if you are aware of the exact positions of the joists.

We don’t recommend replacing stored item due to this risk. However, if you do wish to replace items, then the joist should be raised and boarded placed for stored items.

How long does it take?

The installation should take between 1 to 2 hours to complete.

Do I need to provide any thing?

No, the technician’s team will have all of the equipments to carry on the work including ladder.

Is there much mess?

No, a small amount of dust may fall from the loft hatch, (depending how long it has been since the hatch was last opend0whihc will be velar by the crew and all packaging will be removed your home.

APPLY NOW FOR FREE ASSESSMENT AND INSTALLATION at APEXGREEN.INFO.




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