Has much higher r value and seems to be much easier to install especially on roofs.
Insulated roof sheathing panels.
Our insulated sheathing panels eliminates the need for separate cavity or outboard insulation exterior gypsum sheathing air barriers vapor retarders and building wraps while providing excellent thermal efficiency and moisture control for exterior walls.
The polyiso performs an essential function.
2 thoughts on building a modern shed part 7 insulated roof sheathing panels robert says.
If you are planning an unvented insulated roof assembly one in which the insulation follows the roof slope the polyiso is not only worth it it is required.
Tetrashield 4 in 1 insulated sheathing panels provide an air moisture vapor barrier and thermal insulation in a single component.
Use with class a b or c shingles metal tile or slate roof coverings ansi ul 1256 classification classified for insulated metal deck assemblies constructions no 120 and no 123 physical properties sheathing osb conforms to apa standard prp 109 exposure 1 and hud fha 918 polyiso insulation.
December 12 2019 at 9 38 pm just wondering why you wouldn t use something like prodex 5m insulation or something similar.
It keeps the roof sheathing above the dew point during the winter preventing moisture accumulation in the sheathing.
Zip system roof assembly combines our revolutionary integrated sheathing and flashing tape or liquid flashing to provide a sealed roof for protection against moisture intrusion during construction or if high winds strip the roof covering away.
Astm e84 flame spread index of 45 50.