What is isocyanurate insulation?

What is isocyanurate insulation?

Polyisocyanurate (Polyiso) is a closed-cell, rigid foam board insulation that is bonded to facers on both sides, which are composed of various organic and inorganic materials. Polyiso is used in roof, wall, ceiling and specialty applications within commercial and residential buildings of all types.

Are polyisocyanurate and polyurethane the same?

Polyisocyanurate typically has an MDI/polyol ratio, also called its “index”, higher than 180. By comparison polyurethane indices are normally around 100. As the index increases material rigidity (stiffness) increases.

Is polystyrene the same as polyisocyanurate?

With that being said, Extruded Polystyrene (or XPS or “Styrofoam”) can only be used in applications up to 165°F, whereas Polyisocyanurate (or PIR or “Polyiso”) can be used in applications up to 300°F.

What is polyisocyanurate R-value?

For the R-value of polyiso wall insulation, a full thickness, 180 day aged value is recommended. Foilfaced polyiso has an R-value of about 6.5 per inch and permeability faced polyiso wall insulation has an R-value of around 6.0 per inch.

Where is polyisocyanurate insulation used?

These insulation boards are used as decking and as thermal insulation for new and refurbishment flat roof applications. It is suitable for use in damp environment as it does not readily absorb water. The low thermal conductivity of the insulation minimizes the board thickness.

Is PIR the same as PUR?

PIR, like PUR, is known for use as a low-moisture barrier. The most notable differentiating factor for PIR is its flame and smoke resistance. PIR slows the spread of flames and reduces the smoke emitted from the fire when compared to PUR products.

What are PUR panels?

Polyurethane rigid foam (or PUR for short) has been used in construction since the 1960s as a high-performance insulation material. Continued technical developments in Europe and the US have led to the next product generation which is often called polyisocyanurate or rigid polyiso foam (or PIR for short).

Is XPS a polyiso?

Both polyiso and XPS are types of insulation material serving the same basic function: to provide a means to manage the passage of heat in a building system. That’s where the similarities between these two types of product end, however.

Is polyiso foam a plastic?

Polyisocyanurate Foam Panels: PIR, polyiso, or ISO, is a thermoset plastic product typically produced as a foam and used as rigid thermal insulation panel – most often with aluminum foil facing.

Is polyisocyanurate eco friendly?

Polyiso insulation is environmentally-friendly and requires 85 percent less embodied energy to manufacture.