Once you have matched the material properties with the specific application, consider the following installation factors:
Is it relatively easy to install?
Is it the best buy for the space available (either high insulating value per dollar if you have lots of open space, or high insulating value per thickness if space is restricted)?
Is it available locally?
Will it be easy to install the insulation to fill the space completely?
Can it conform to surface irregularities?
Is it rigid enough to provide support for finished materials or resist pressures against its surfaces?
Does one insulation require more accessory products than another (fire protection, framing, air and vapour barrier)?
In short, the choice of insulation will largely depend on how it will be used. Different types of insulation are commonly used for insulating walls, basements and attics. Fortunately, particular insulation jobs will quickly eliminate some materials, making the choice much easier.