Types of Loft Insulation Material

Updated February 21, 2017

As the price of heating fuels and electricity rise, insulating your house becomes more of a priority. Insulation helps to properly seal the house, creating an envelope that helps to keep the warm air during the winter and the cool air during the summer inside the house. One kind of insulation is loft insulation. It is has loft, or height, which allows it to act as a blanket. There is more than one kind of insulation material used in its creation.

Batt Insulation

Batt insulation is a common kind of loft insulation. This insulation can have a backing of paper or foil or can be without a backing altogether. The materials in this insulation include fibreglass, felt, mineral fibre and rock.


Sheet insulation is a form of loft insulation that is rigid. It is made of polyisocyanurate boards, polystyrene or polyurethane. This kind of loft insulation often has a backing that can be moisture-resistant, polystyrene or decorative. It can be used to insulate the underside of roofs.

Loose Insulation

This insulation is made using granular or shredded materials such as cork, mineral wool, newspapers, cellulose of vermiculite. It can fit easily in tight spaces, which makes it beneficial.

Blown In

Blown in insulation is similar to loose fill insulation. It can consist of particles of woo, newspaper, cork or vermiculite. As the name implies, this insulation can be blown into hard to reach places even inaccessible to loose-fill insulation.

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About the Author

Marjorie Gilbert is a freelance writer and published author. An avid researcher, Gilbert has created an Empire gown (circa 1795 to 1805) from scratch, including drafting the gown's patterns by hand.