How much loft insulation do I need?
To meet current Building Regulations you need 270mm of mineral wool insulation. 100mm between the ceiling joists and 170mm laid over the joists.
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How do I find out how much loft insulation I have?

Simply push a tape measure or ruler down the side of a piece of loft insulation until it hits the plasterboard ceiling and read off the depth.

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How do I know what thicknesses of Earthwool I need?

Current Building Regulations state that you should have a minimum of 270mm of mineral wool insulation. However, the greater the thickness, the bigger the savings. Earthwool is available at 100mm and 200mm thicknesses. The 100mm thick version is ideal for use between your joists if you have little or no existing insulation. The 200mm thick version is meant for laying across your joists once you have insulated up to the top of your joists (either with Earthwool 100mm or with your existing insulation).

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How do I know how many rolls I need to insulate my loft?
First, you need to find out the length and width of your loft. You can do this by using a tape measure to measure the length and width of your house (in metres) or, if you don?t have a tape measure, a large stride equates roughly to 1 metre.
Once you have these measurements, enter them in our calculator here [link to order calculation page], chose the thickness(es) of Earthwool you require and click calculate.
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How long would it take me to insulate my loft?
Allow about half a day once you have bought the insulation. Remember ? you will need one layer of 100mm between your roof joists, then a second layer of 170mm on top (cross layered) to comply with current Building Regulations. Measure the area of your loft and look at the packaging label for the area contained in a roll.
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Will Earthwool deliver right into my loft?

No. We will deliver it to the room of your choice or even right under your loft hatch, but not actually up into your loft.

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