Most people are at least aware of the need to fireproof or waterproof insulation. However, one of the least considered properties of insulation is UV stability. Even in the winter, Albertan facilities are exposed to a lot of sunlight. In this week’s article, we are going to discuss what it is and why it is important in any sun-facing application.
Degradation
UV degradation is a condition that occurs to many natural and synthetic polymers over time due to prolonged exposure to sunlight. For example, polystyrene foam is inert, durable, and water resistant; but it won’t fare so well when it comes to UV exposure. UV rays will slowly degrade the material, one microscopic cell layer at a time. Left to its own devices, this type of insulation left exposed to sunlight will quickly lose its insulator qualities.
Applying Protection
The good news is that most insulation materials can be covered with a UV stabilized coating to protect them from degradation. In many cases, these are acrylic-based elastomeric coatings.
Put simply, UV stabilizers work by either absorbing or rejecting UV radiation and preventing damage, dissipating the energy as low-level heat. Think of it like sunscreen for your insulation. In fact, some of the chemicals used for these resins are similar to what is in UV protecting lotions for your skin. Typically these stabilizers need to be incorporated prior to shaping the product by injection moulding.
UV Resistant
There are some types of insulation which are UV stable without needing a coating. Fiberglass and mineral wool insulation are in this category. In many cases, glass-based materials are a better alternative to polymers and plastics when it comes to UV exposure. Pipe coverings, exterior wall, and roofing applications often require at least a coating, if not a fully UV resistant material.
If your project requires insulation and will be exposed to sunlight, it is important to consider the implications of UV rays on the material. Luckily, there are a couple of ways to defend your insulation from degradation: a UV stable coating or just using a material that is naturally UV resistant. The experts at Westcal Insulation LTD can help you determine which insulation is best for the job, saving you time and money. Contact us today for a consultation!
