what is the point of insulation?

Though each home needs, and likely has, insulation, consumers should learn as much as they can about insulation and insulation products.

Insulation can save you money

Most homes within the UK do not have the necessary amount of insulation built in – this means that just over 25% of heat loss escapes through the roof and walls.

By simply having the suitable amount of insulation in your loft could save you up to £180 per year. This means that by installing insulation – it is the fastest payback solution available to us. When the correct type and size of insulation is installed, it typically takes less than 3 years to get your money back.

  • Loft insulation costs £300 to install properly and could see homeowners £180 a year better off through their energy bills.
  • Floor Insulation costs £300 to install completely however could potentially save homeowners £50 a year.
  • Solid Wall Insulation costs the most to put in at £7,000 however the money back each year is approximately £460 – yet think how much warmer your home would be.
  • Cavity Wall Insulation is the second most expensive to install at around £450 however the payback period is shorter – with energy savings of around £140 per year.

Source: Energy Saving Trust

Insulation makes your home more comfortable

By allowing heat to stay in the home, and not escape through the walls and roof – it enables the heat to flow through the home more evenly – giving an overall uniform temperature. The uniform temperature allows for the tenants to move around the house without walking into cold spots.

Insulation can increase the value of the home

Insulated homes are much more popular than homes that still need to be insulated. This is because the home which retains the heat better will have a better R-Value and energy efficiency rating – which will see lower energy bills. Home buyers will pay more money for the house which saves them more in the long run.

Insulation can decrease noise levels

Insulation is a good sound barrier. Insulation can keep the noise from room-to-room down, offering good privacy for each resident and neighbouring house.

Insulation can help to keep down moisture

Condensation can be a huge problem with some homes, and home insulation can be used to resolve the problem. This is because it helps control airflow and stops the build-up of moisture in the air.

Insulation can cut down CO2 emissions

  • Roof insulation can save around 1 tonne of CO2 emissions
  • Cavity Wall Insulation saves 800kg
  • Solid Wall Insulation saves 2.3 tonnes
  • Loft Insulation around 730kg
  • Floor insulation saves the least at 240kg

 Insulation saves the environment

Insulation is an acknowledged way to reduce the consumption of fossil fuels which add to the greenhouse effect.

“And Yet Nearly 60% of Our Houses Don’t Have Good Enough Ceiling And Underfloor Insulation”

Source: Energy Wise

270mm is the recommended thickness for insulation – however this can vary depending upon product and specification.


types of insulation products












For more information go to: Energy.gov

solid wall vs cavity wall insulation













‘Solid’ means that there is no cavity inside of them. Solid walls were construction intil the 30’s in most regions of the UK. If you are not sure whether you have a solid wall – then simply look at the brick pattern which is very recognisable. The pattern includes lots of end bricks, which look very much like half-length bricks within the middle of the walls. The reason for this, is because they run from the front of the wall to the back and not length ways.

Cavity walls are very different with a gap in between the bricks – and depending upon the era that it was built, will either have ties made from plastic or metal which effectively hold the two walls together. The pattern will show very few half-length bricks in contract to solid walls.

internal vs external insulation













Internal wall insulation is carried out by placing rigid insulation boards on to the wall, or by building a stud wall filled in with mineral wool fibre.

External wall insulation differs of course, and involves applying a layer of insulation material to the wall, and then coving it with a render or cladding to keep it in place. There are many difference finishes including smooth, textured, painted, tiled, and many more.

There are benefits and drawbacks to both types of insulation:

Internal wall insulation:

  • is generally cheaper to install than external wall insulation
  • will slightly reduce the floor area of any rooms in which it is applied (the thickness of the insulation is around 100mm)
  • is disruptive, but can be done room by room
  • requires skirting boards, door frames and external fittings to be removed and reattached
  • can make it hard to fix heavy items to inside walls – although special fixings are available
  • needs any problems with penetrating or rising damp to be fixed first.

External wall insulation:

  • can be applied without disruption to the household
  • does not reduce the floor area of your home
  • renews the appearance of outer walls
  • improves weatherproofing and sound resistance.
  • fills cracks and gaps in the brickwork, which will reduce draughts
  • increases the life of your walls by protecting the brickwork
  • reduces condensation on internal walls and can help prevent damp (but will not solve rising or penetration damp)
  • is best installed at the same time as external refurbishment work to reduce the cost
  • may need planning permission – check with your local council
  • requires good access to the outer walls
  • is not recommended if the outer walls are structurally unsound and cannot be repaired

Source: Energy Saving Trust

To see our infographic and share it please go to: https://insulatingyourhome.wordpress.com/insulation-whats-the-point/


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