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Insulating Your Loft - Get ready for winter

As we draw nearer to winter and the nights are starting to get colder, it is probably worth considering your loft insulation and what you can do to improve it. The heat your home produces will rise, and this heat can escape through the roof if you do not have it insulated; you can buy all the materials you are going to need from our Online Store; we ship fast and orders over £250 (inc VAT) are delivered carriage free to most areas of the UK.

Many homes in the UK still do not have the recommended 270mm depth of mineral wool insulation required to give you effective energy loss prevention (although depending on what the insulation you are using is and what thermal values it has then you may find different thicknesses are required). Mineral wool insulation is estimated to be effective for at least 40 years - the savings you can make will pay for themselves in a much shorter time frame, and pay you back for years to come.

If you assume that you have an average 44 metre square loft, you might expect the installation costs versus savings to work out as follows:

Insulating from 0mm to 270mm
Insulating from 100mm to 270mm
Approx Savings Per Year
Aroun £180
Around £25
DIY Installation Cost
 £475 Approx **
 £275 Approx **
Payback Period
 Up to 3 Years on average
Up to 11 Years on average 
** Prices based on Super Loft Blanket Insulation totally 44m2. These prices are correct as of the time of writing at 10/10/13. Energy savings based on figures released by the EST**

If you are unsure of how to install loft insulation, watch the video below as a handy How-To-Guide.

Before you look at insulating your loft, you need to check it is suitable - you will need to address any damp or condensation problems before you begin.

Assuming you have done so then installing the insulation should be very simple - you just roll 100mm between the joists and then the other 170mm at a right angle to the joists over the top giving a total of 270mm depth. You must be careful not to run the insulation over the top of any cables.

Once you have done this, then you should look to insulate any water tanks or pipes running above the loft insulation - once they have been deprived of the heat you are no longer losing through your roof they will be prone to freezing.

Tank jackets can be purchased to suit the size of water tank you require, and the grey polyethylene pipe insulation (Climaflex) can be used to insulate any pipes - you will want to use the thicknesses recommended by Water Bylaw 49. These are:

Pipe Size
Recommended Thickness
54 +
The smaller the pipe, the faster it will freeze (as volume affects time to freeze) so you need to use thicker insulation to prevent smaller pipes from freezing.

All of the items above can be purchase from our Online Store. As long as you take the appropriate precautions there is no reason a competent DIY'er cannot achieve excellent results that save you money for years to come.


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