It typically weighs 2 to 3 pounds per square foot. It is sold in 12-pound, 15-pound, 20-pound and 30-pound densities.
What does Poly ISO weigh?
ISO-C1/2.5 is Dyplast Products’ 2.5 lb/ft³ polyisocyanurate rigid, closed cell, foam insulation.
What is the compressive strength of polyisocyanurate insulation?
Polyiso insulation boards are available in a range of compressive strengths. Material specifications for Polyiso Insulations (ASTM C 1289 in United States and CAN/ULC-S704 in Canada), indicate that all polyiso products should have a minimum stated compressive strength of 16 psi (110 kPa).
Why is polyisocyanurate a good insulator?
The hydrophobic core of polyiso makes it exceptionally water-resistant compared to other rigid foam insulation products on the market. Additionally, the facers used to cover both sides of a polyiso insulation board can further enhance its moisture resistance.
How much does batt insulation weigh?
According to the USG Gypsum Construction Handbook, cellulose and rock wool insulation weigh about 2.5 to 3 pounds per cubic foot. Fiberglass weighs about 1 pound per cubic foot. With 1/2-inch drywall applied perpendicular to the trusses, the allowable weight load is 1.3 pounds per square foot.
How much does expanded polystyrene weigh?
Expanded Polystyrene (EPS), Type VIII weighs 18 kg/m³ (1.1237 lb/ft³) [ weight to volume | volume to weight | price | density ]
How much does rubber roofing weigh?
The weight of a roofing system varies depending on components used. After combining the weight of components (i.e. insulation, membrane, fasteners, and adhesive), typical installation weight is less than 2 pounds per square foot (10 kg per square meter) when .
What is polyisocyanurate foam?
Polyisocyanurate foam (polyiso foam) is a cellular, thermoset plastic formed when two basic liquid chemicals, isocyanurate and polyol, are combined in the presence of a catalyst that helps the molecules to rearrange and join, a blowing agent to create closed cells in the structure, flame retardents, and possibly other …
Does polyisocyanurate insulation absorb water?
The material standard for polyiso is ASTM C1289. Glass faced polyiso goes from absorbing 14x more water than XPS, to absorbing 30x more water than XPS, when measured using the same method. Foil faced polyiso goes from absorbing 1.5x more water than XPS, to absorbing over 7x more water than XPS.
What is the weight of polyisocyanurate roof insulation?
Rigid Roof Insulation Weight. ASCE states that rigid roof insulation weighs 1.5 psf per inch of thickness, whereas, polyiso insulation, like Thermax, is < 0.25psf per inch. Also Know, how heavy is a roof?
Why does polyisocyanurate lose its insulating value over time?
All such rigid foam insulation (including polyurethane, extruded polystyrene, and polyisocyanurate) thus lose a small amount of their insulating value over time as air displaces insulating gases.
What is the thermal conductivity of polyisocyanurate foam?
It is also a closed cell thermoset polymer formed by reacting a di- or poly-isocyanate with a polyol. The thermal conductivity can be lower than of polyurethane foam. Polyisocyanurate foam is typically used for metal faced panels, roof boards, cavity wall boards and pipe insulation.
What kind of material is polyisocyanurate made of?
Polyisocyanurate, also referred to as PIR, polyiso, or ISO, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. The starting materials are similar to those used in polyurethane (PUR) except that the proportion of methylene diphenyl diisocyanate (MDI) is higher and a polyester -derived polyol is used in …
