Poly board provides excellent thermal resistance, effectively preventing heat loss and transfer, which can lead to lower energy bills.
Moisture Resistance:
Many poly board types resist moisture, helping to prevent dampness and mold issues in a building.
Lightweight:
The lightweight nature of foam boards can make them easier and faster to install, reducing labor costs.
Space Efficiency:
Due to their high R-value, they provide significant insulation in a thin profile, saving space within the structure.
Durability:
Polyurethane boards offer good durability and resist mold, contributing to a healthier and safer building.
Reduced Thermal Bridging:
They are effective at reducing thermal bridging in walls and roofs, a common cause of energy loss in buildings.
Cons:
Environmental Concerns:
The production of polystyrene can be energy-intensive, and while some types are recyclable, others like polyiso are thermoset plastics that cannot be re-melted and recycled easily.
Brittleness and Strength:
Polystyrene boards can be brittle, prone to cracking, and may have poor load-bearing capacity.
Flammability and Toxic Fumes:
Ordinary polystyrene is flammable and can melt and drip when exposed to flame, potentially spreading fire and releasing toxic fumes.
Performance in Extreme Temperatures:
Polyiso’s R-value can decrease significantly in very cold or hot conditions, making it less effective in extreme weather.
Cost:
While high-performance, poly board insulation can be more expensive upfront than other insulation materials.
Installation Complexity:
Improper installation, such as poor surface preparation or over-expansion, can lead to reduced effectiveness
