How To Insulate A Loft Or Roof

Did you know you lose a large portion of heat through your loft? If you insulation your loft properly you will be surprised by the amount you could save on your energy bill. Over the time that you have the loft insulation, which should last roughly 40 years, it should end up paying for itself in savings.

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Quick Navigation

  1. What is loft insulation?
  2. What are the cost savings of loft insulation?
  3. Can I DIY insulate my loft?
  4. Choosing the loft insulation material
  5. Things to consider
  6. Cost of insulating your roof
  7. Get a quote on for a loft insulation installer

What is loft insulation?

Loft insulation is a mineral fibre that typically comes in a large roll that you can lay out on the floor of your loft & in between any of the joists or gaps. It’s used to keep the heat that your home produces in your home and block it from escaping through the ceiling, it’s a simple and effective way to drastically reduce your heating bills.

What are the cost savings of loft insulation?

According to the Energy Savings Trust there are quite a lot of savings to be made from insulating your roof. Here is an interactive graph they have produced with the typical installation cost, energy savings per year & carbon dioxide savings:

Can I DIY insulate my loft?

The short answer to this is yes you can. The process to do this is a whole other topic in itself, however if you do choose this option then you want to ensure you are fully aware of what you are getting into. Be careful, lofts are full of potential hazards from dust, electrics and make sure you wear suitable clothing. Read up about the subject in full detail before going ahead with it!

You should only look to DIY insulate your loft if it offers good conditions, i.e isn’t damp.

Choosing the loft insulation material

If you have decided to DIY insulate the loft yourself then there isn’t too much to choose from, loft insulation is in rolls and can be made with mineral wool, glass fibre or recycled materials. The difference between what you buy tends to come in the depth of the material that you purchase.

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Things to consider

When you’re looking at getting your loft insulated you may have a few concerns or questions, so here are the answers to a few of the thing that you may have to consider:

Can you insulate a loft if it’s a living space?
Yes, the insulation method just slightly changes. Instead of insulating the floor and keeping the heat out, you want to make sure that you insulate the walls. The most common method of doing this is by putting up insulated plasterboard.

My loft is too small for me to access
Unfortunately then that probably means you’ll have to call a professional in. It’s a different method of insulation where they blow granules of the insulation in using special equipment.

How does it work if I have a flat roof?
It may be worth waiting to do this when you have to have your roof replaced. If you have a flat roof due to condensation you will have to insulate it from the outside, adding a layer of insulation between the outer layer of the roofing and the timer roof surface.

My loft has damp issues
Generally it’s advised that you get a professional in if this is the case. The reason is, if you’re not careful then installing insulation can cause the damp problem to be amplified.

Cost of insulating your loft / roof

The general rule of thumb is that 270mm loft insulation rolls are valued at approximately £20, give and take depending on the brand and supplier & these will cover 8m squared.

To get an accurate price you would need to measure your loft & work out the value based on how much insulation you will require.

Get a quote on for a loft insulation installer

Are you looking at getting your loft insulated but don’t particularly want to do it yourself? It’s fine to leave it to a professional! We can offer you the ability to easily compare quotes, you simply have to fill in the form below & we will put you in touch with local tradesmen and companies who will be able to supply you with quotes for the work:

About Mat

A complete novice trying to navigate in the world of DIY. I bought my first home about 2 years ago & ever since I've been trying to research & learn how best to tackle common household problems.

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