Insulation 2017-10-09T14:14:11+00:00

Benefit from a warmer home and reduce your energy bills.

At Fusion Energy we can help you have a warmer home and reduce your energy bills by stopping heat escaping through your walls and ceiling. Our expert teams are experienced in wall and loft insulation and ready to help.

Cavity wall insulation

Houses that were built after 1926 may have a cavity wall, this is where the walls are built with two layers of brick or brick and breeze block with a gap between the two to stop water transferring across the cavity and to enable air flow around the property. It has been found that this was an inefficient way to build properties and filling the walls can save you money, as they say that 35% of your heat loss is through the walls. Filling the walls with insulation can also help to reduce condensation problems from within the property on the external walls.
insulation engineer up ladder

How to tell if you have cavity walls?

Solid Brick wall

If your walls are like this with all the bricks going the same way we call this stretcher bond and we can fill these walls in most properties.

Solid Brick wall

If your walls have bricks like this then they are probably solid walls as the builder has used the bricks to tie the two walls together and this we can not fill as it will leave a cold spot.

Building Detached Semi detached Mid Terrace Bungalow Flat
Annual Saving £250 £145 £95 £100 £75
Insulation cost £870 £415 £220 £270 £149
Payback Time 3 Years 3 Years 3 Years 3 Years 3 Years
Amount of Carbon saved per year 1040kg 600kg 395kg 410kg 325kg

Figures form EST website these are estimates based on insulating a gas heated home with no subsidies on cost.

Important information about your cavity walls

If your walls have no insulation
The walls have an open cavity of 40mm and above
As long as there is no damp in the walls
Around 10 years Old as most new properties have the walls insulated when built
The property is not system built or Timber framed
If flats then all must be done together
We would send out a Insulation surveyor who can test drill the property to see if insulation has already been installed. We do this by drilling a small hole in the mortar joint and putting a boro-scope in the wall to look inside the cavity, this is a free survey for all customers.
If you have one of these attached to the property then we may need access equipment, we will at all times to keep the cost of this to a minimum but sometimes we have to charge for scaffolding.

It’s better to fill all of the walls at the same time rather than not do certain sections, and when a conservatory is attached we will need to drill inside the conservatory if filling the walls above.

Sometimes we need to go into your neighbour’s garden to access the wall. We will always try our best to make no mess and clean up as we go along but we would ask that you get the permission for us to do the work.
We will need to drill some holes in the mortar joints of the brick (not applicable to rendered properties) these should be around 22mm and about 1 meter apart, there will be a selection of holes that we will drill on different courses of brick moving up the property. We fill the walls with mineral fibre but other products can be used. This is to make sure we fill the cavity fully.

The job should take about 3 to 4 hours for a 3 Bed Semi home, once completed the fitters will clean up and try to leave you the way we found it, sometimes the wind will blow dust about we can’t control this.

Solid wall insulation

There are two ways of installing Solid Wall Insulation External as above or Internal. There are many different finishes such as Spar, Pebble dash, Brick slips and render and many more but we are just showing the standard render as this is what most people go for.

There are many colours so again ask about this at survey stage so you can pick a colour that suits you. If your home was built before 1920 the chances are that it is solid built but we also do properties that are system built these were homes built around 1950 with metal framed construction.

What do solid walls look like?

If your bricks in your walls are like this, then they are solid walls.

Solid Brick wall

Where does your house loose heat?

What will I save?

Building Detached Semi Detached Mid Terrace Bugalow Flat
Annual Savings £460 £270 £180 £180 £150
Amount of Carbon saved per year 1040kgn 600kg 395kg 410kg 325kg
Insulation Cost External: £6,000 to £25,000 / Internal: £4,500 to £15,000
As we are a Green Deal installer you could always use the Green Deal to spread the cost, this is a Government initiative that helps people to save energy by installing energy efficient measures to their homes. There is a Golden Rule that we work to where the savings must be more than the cost of the work so if you save £100 a month on energy savings and the cost to install the measure comes to £99 then this hits the Golden Rule for more information see
External wall insulation is fitted on the outside of the home and is less disruptive to you than internal, on a two storey property we would need to have scaffolding in place and the work should take us around 7 days to complete please bare in mind that we are at the hands of the weather when installing these products and we may have to wait for a break in rain or cold days to install this correctly.

Internal wall insulation is fitted to the outside envelope of the property and this will require working form inside your home, with the insulation averaging 100mm this will mean that we need to extend window cills and move any radiators that you have on outside walls and replace the skirting more information can be gained at point of survey.

Yes, you will get an independent guarantee form the works that will cover you for 25 years, so if anything happens to our company you will still be covered as we pay for this guarantee for you.
We will take care of the building notices for you as we are part of a COP (Competent Person Scheme) with our PAS 2030 accreditation Body STROMA

Roof and loft insulation

Heat rises through the loft and is lost so we recommend you insulate the floor of the loft, some people will insulate the pitch of the roof but heat would still be lost to the roof space so the best way to keep the heat in your bedrooms is to insulate the floor of the loft which in turn would be the ceiling of your bedrooms. As long as you keep the insulation nice and fluffy and not compressed it should last for 40 years, compressing the insulation will lose you the value of insulating so try not to store anything directly on the insulation, you can have a raised platform built over the insulation about the size of a garden shed floor for around £150 call us for more information on Loftzone.

How much could you save?

Building Detached Semi Detached Mid Terrace Bugalow
Annual Savings £250 £150 £140 £200
Insulation Cost £395 £300 £285 £265
Payback Time 3 Years 3 Years 3 Years 3 Years
Amount of Carbon saved per year 1050kg 620kg 580kg 830kg

Important information about your roof and loft insulation

When we roll the insulation we roll 100mm in the joist and then we cross lay the insulation with another 170mm across the joist, this will mean that you can’t see the joist once the insulation is installed so using the loft for storage you may need to tak an area and raise the joist for your bits you store in the loft. Again we can install a platform for you call and ask about Loftzone.
Using your joist to help you check what insulation you have if the insulating is below the joist then this is less than 100mm (4 Inch) as most joist are 100mm some more modern homes have 75mm (3 Inch) joist, if your insulation is below the joist then you need to call us for a free survey.

In very old houses pre 1900 the joist may differ so give us a call and we will send one of our surveyors round for a free no obligation quote.

Most homes have a loft hatch but if your is one without a hatch still call us and tell us this so we can pop a small hole in the ceiling and look into the loft with a scope to see if you require insulation, we will cut a new hatch for you and this should be free subject to survey. If insulation is already in the loft we will make good the small hole (about 10mm) and you would not know we had looked.
If you’re thinking of using the loft area as a room then you may want to consider insulating the pitch of the roof form the inside, this is not so much a DIY job as you need to think about the ventilation you will be blocking and a professional job is what we offer.

Draught proofing

Installing draughtproofing is not a massive heat saving measure but a great comfort measure as it diverts the draughts away from you and stops the cold rushing into the rooms.When you’re home as wooden door frames or the old crittall type windows these can have draughtproofing fitted to them.

UPVC and Aluminium frames as not suitable to fit the draughtproofing that we are talking about for these you may need new seals fitting.

Installing Draughtproofing could save you around £10 to £50 per year but as we say the comfort factor out ways the savings in our opinion. Having a draught free home is better than having a draughty one.

Draughts from around your Windows, Doors and Loft hatch are the most common areas so if you’re feeling these draughts give us a call

draught proofing

Fusion Energy is a certified Green Deal Installer

Only an authorised Green Deal Installer can install energy efficiency improvements under the Green Deal finance mechanism. Additionally, only authorised installers will be able to identify themselves as ‘Green Deal Installers’ and use the Green Deal Quality Mark.

Contact us today on freephone 0800 610 1004 or fill out this enquiry form