Basically you have to choose the one that would give you the greatest benefit. Insulation assures that the temperature in your house is regulated and also it helps saving energy. Below are tip on choosing the best type.
First you must assure that the project is successful from the first attempt with some preparations.
Verify how many insulation kits are required. You must choose the number of boards you will use, leading you to the number of kits to purchase. The insulation kits are rated with a chart of R-values, so the higher the number the greater the insulation.
Now you have to clean the area of oil and dirt so the foam can stick.
Usually the best foam comes from the best manufacturers which you can also find online with a little research. Choose between the two common type of foam insulation kits: closed-cell kit and opened-cell kit. The first one is for filling holes in your insulation system. The second one is for being sprayed on surface voids in the attic.
For more information about this you can go to a local hardware and ask the specialists there for more information.
The ability to fill in large holes or cracks is one of the most important things you have to consider when choosing the appropriate insulation kit.