Loft insulation

There are several types of insulating materials available.

Mineral fibre or fibreglass matting

In the UK, the total thickness of insulation should be at least 200 millimetres (eight inches) to be fully effective.

When installing this insulation the weave should not be over stretched or compressed, as this will damage its ability to trap heat. Protective clothing must be worn to handle this material, as it can irritate the skin and throat.

Benefits:

• Can be installed by most DIY enthusiasts
• Offers sound absorption
• Fast installation time

Loose-fill insulation

Usually made of mineral wool or cellulose fibres. It's ideal for use in areas where access is difficult or when the use of mineral wool quilt is impractical. DIY installation is generally not recommended – leave it to a professional.

Benefits:

• Normally based on natural material such as paper
• Material forms a complete blanket leaving no gaps

DIY Loose-fill insulation

This type of insulation is sold in bags that are poured between gaps to the required depth. The insulation is usually made of vermiculite, a natural and environmentally friendly material.

Benefits:

• Easy to apply and is especially useful for areas where joists are irregularly spaced
• No fitting and cutting involved

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