Phenolic Roof Insulation

The reason is that phenolic dust once introduced to moisture can become very acidic and damage surrounding materials.

Phenolic roof insulation.

Phenolic foam insulation was manufactured and sold into the north american market in the 1980 s and early 90 s mainly as roofing insulation. It offers many advantages including excellent density and an r value of 4 8 per inch of thickness which forms an effective barrier against heat transfer and thus helps you save energy around the house. Claimed benefits were high insulation value and excellent fire resistance. High moisture absorption potential and residual acid present in the foam allegedly resulted in significant corrosion issues.

Composite polyiso insulation board. Phenolic foam insulation used to be available in board form but today is only sold as a type of foamed in place insulation. Phenolic insulation exposed to humidity or direct moisture such as roof leaking creates sulphonic acid. Phenolic insulation is the most thermally efficient insulation commonly used helping you to meet building regulations and has exceptional fire performance.

Like our polyiso foam trymer supercel phenolic is manufactured large bunstocks and fabricated into the unique shapes and sizes needed for a variety of commercial applications. Trymer supercel phenolic meets the 25 50 flame smoke requirement established by astm e84 and offers compressive strength that ranges from 32 psi to 158 psi. Our phenolic foam trymer supercel phenolic is a closed cell rigid phenolic foam insulation. Installing polyisocyanurate insulation boards in adhesive during a roof installation.

In a short amount of time this sulphonic acid corrodes both standard painted deck as well as galvanized deck. Currently july 2014 membrane roofing manufacturers will not issue a warranty on new roofing on buildings which had phenolic insulation. The plant is comprised of several sections with varying heights says lembke. Click here to see more roofing topics.

Where can i use phenolic insulation. It was produced in board form in various sizes and thicknesses ranging from 1 inch to 3 3 5 inches 25 4 mm to 91 4 mm. The presence of phenolic insulation should be carefully considered. 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.

It can be used in a variety of roof wall and floor applications which makes it a great solution for a range of constructions. Other precautions had to be undertaken as well. While the roof surface is flat the installation of the new roof the removal of the phenolic foam and its replacement with polyisocyanurate foam had to be carefully sequenced. Phenolic foam is one of numerous available varieties of insulation.