Phenolic insulation is a rigid type of insulation with a closed-cell structure, commonly used in construction projects such as ductwork, walls, roofing, and flooring. Due to its design and thermal properties, phenolic insulation is the most thermally efficient insulation commonly used. Phenolic insulation is commonly available in R-values between R-6 up to R-24 in a single sheet of board, but two phenolic insulation boards can be used together to achieve higher R-values such as R-30 to R-45 depending on the thicknesses.
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Phenolic insulation is made through a process of utilizing a wet foam mix which is first added to the bottom layer of facing. It then expands to meet the top layer. This is then cooked under pressure and cured in a second oven. When ready, the phenolic insulation boards are cut to the right size and packaged up.
Phenolic foam insulation was a short-lived innovation developed in the early 80s. It was a response to the energy-crisis, which called for greater insulation efficiency. As regulations required higher R-value insulation in roofs, a demand arose for material which offered both fire resistance and high R-value, while not requiring a full roofing re-build to accommodate its thickness.
This seemingly cost-effective solution turned out to have major problems that manifested in less than ten years time, resulting in one of the largest class-action settlements in the history of the roofing industry, filed in .
Phenolic foam insulation is usually found in conjunction with built-up roof membranes, also known as BUR and commonly referred to as &#;tar and gravel&#; roofs. They are generally found on low-slope commercial buildings. It was manufactured in board form in thicknesses ranging from 1&#; to 3 3/5&#;.
Installed in at least 6,000 roof systems, it was most popular in the Midwest, East Coast and Texas. Hundreds of systems were installed in Illinois, Michigan and Minnesota.
Over time, however, the critical flaw was obvious: when the compound got wet, it broke down, creating a corrosive acid that damaged the metal deck. Damage ranged from severe surface rust to large holes. The corrosion created the potential for equipment or people to fall through compromised areas.
While roof systems containing phenolic foam roof insulation may be in good shape, it's important to repair and remediate decks, as soon as possible. Once a property is identified as part of the class-action lawsuit, it becomes an issue should the owner sell the building. While the lawsuit will cover some remediation costs, the owner will be liable for expenses, as well.
The remediation project is more complicated than a typical roofing project, because of structural issues, as well as legal conditions demanded by the class action lawsuit. Extra training, safety measures and documentation are necessary.
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Briefly, a phenolic foam remediation project demands these essential steps:
Removal of existing roofing materials and insulation down to the deck.
Only a day&#;s worth of work should be undertaken to avoid leaving the building vulnerable to the elements.
Remove all corrosion from the deck by wire brushing.
Compare deck condition to the standard expressed in the lawsuit, determining remediation needed: painting, over laying, or removing and replacing the decking.
Remediate the deck according to the determination. Critical during this phase: worker safety; interior protection; and maintaining protection from the elements.
At each step, extensive documentation of the condition and work done.
At All Elements, Inc., we&#;re experienced in phenolic foam remediation, which means you can count on us for a simple, effective solution.
Contact us to talk about the condition of your roof, and we&#;ll help you understand your options and help you plan the next steps!
Contact us to discuss your requirements of Phenolic Roof Insulation. Our experienced sales team can help you identify the options that best suit your needs.