This is the most common type of loft insulation you’ll see in homes in the UK. It comes in rolls generally, and can be made of rock, recycled glass, foil backed felt, or mineral fibres.
Loose Fill Insulation
This insulation involves loose, lightweight material that can top up existing insulation or be used on its own. It consists of things like cork granules, mineral wool, fibre, and even recycled newspaper!
This kind of insulation is designed to insulate the underside of the roof. Made of firm boards of natural or synthetic materials, it can be made to specific sizes, and can even be fire, and moisture resistant.
Blown Fibre Insulation
This kind of insulation is blow in between gaps in the joists of the loft. The loose fibres are great for getting into hard to reach areas of your loft that otherwise might be missed.