What Are ISO Boards?
ISO Boards are rigid insulation sheathing commonly used in flat roofs. They are tapered, allowing construction of a custom slope that tapers toward the roof drainage system. The drainage system is reinforced with TPO tape and the entire roof is coated with membrane.
![](https://litespeedconstruction.com/wp-content/uploads/2023/11/TPO-Flashing-Tape.jpg)
TPO FLASHING TAPE PROVIDES A DURABLE & FLEXIBLE SEAL AROUND SCUPPER DRAINS.
![Illustration of scupper drain in ISO boards.](https://litespeedconstruction.com/wp-content/uploads/2023/11/Illustration-Drainage-Port-ISO-boards.jpg)
![Illustration of roof drainage using ISO boards.](https://litespeedconstruction.com/wp-content/uploads/2023/11/Illustration-of-Roof-Drainage-using-ISO-boards.jpg)
- Improved Drainage: ISO boards create slope for efficient water runoff, averting ponding.
- Enhanced Insulation: ISO boards boost energy efficiency, reducing heating/cooling costs. Standard is usually R25.
![Photo of ISO board installation.](https://litespeedconstruction.com/wp-content/uploads/2023/11/Photo-ISO-board-installation.jpg)