We have already discussed the criteria that need to be analyzed when choosing the correct insulation blanket material. With that out of the way, now it is time to look at the actual insulation materials typically found in insulation blankets.
- Fiberglass – This classic insulation material is used in most standard insulation blanket applications. It is odorless, does not contribute to metal corrosion, is excellent at sound absorption, and resists decay, mold, and vermin. Fiberglass has a temperature limit of 1200°F (649°C), so it is not right for higher temperature applications.
- CMS Wool – This material is slightly more expensive than fiberglass, but it has a much higher temperature limit of 2192°F (1200°C). It’s also odorless, does not contribute to metal corrosion, is excellent at sound absorption, and can withstand decay, mold, and vermin.
- Mineral Wool – The big plus of mineral wool is its low moisture absorption qualities and excellent thermal resistance. Its temperature limits are the same as fiberglass, and it is a decent sound and vibration absorber. It is also slightly more economical than fiberglass.
- Aerogel – This is the top-of-the-line when it comes to insulation materials. It is superior to both fiberglass and CMS wool and is ideal for a limited clearance application or where blanket weight is a concern. In fact, ½” thick Aerogel has the same properties as 1.5” thick fiberglass. As you might expect, it also carries with it a top-of-the-line price tag. It also has a slightly lower temperature limit of 1100°F (600°C).
Stay tuned for Part 3, where we cover the different materials available for your insulation’s outer and inner covers.