Joerg Birkelbach of Tremco flew in from Ohio just to show us how to use their ExoAir Trio (formerly illmod Trio) foam tape in window installations. Talk about customer service!
The Trio is an open-cell flexible polyurethane foam impregnated with synthetic resin. According to its data sheet, it has been developed to expand into a window/door rough opening to create a seal that is “airtight, thermally efficient and vapor permeable”, hence the “Trio”.
The main objective was to learn how to install our windows from Intus using the Trio. Aramus and Dave from Intus and Charlie and Rafael from Intellistructures were all present.
The Trio has an amazing expansion capability. When delivered, it is about 5/32″ thick, which is what you see below in the rolled on left. Once released from roll, within minutes, the foam expands to 1 1/2″. As Joerg explained, 1 1/2″ is the maximum expansion but the at that point, there is no compression and an airtight seal does not exist. For this particular roll the application range is between 7-15 mm (0.275″-0.59), this range refers to the gap between the window rough opening and the window frame.
This speedy expansion means whoever does the install must know exactly what they are doing and cannot take too long with each window install. Even though the installer needs to know what they are doing, this doesn’t mean he/she can’t learn how to do it relatively quickly. Joerg did a demonstration that took about 5 minutes (while everyone fired questions at him). After that, Rafael (our SIPs installer) took over and did a practice install. I think it isn’t a difficult material to use but learning how to properly use it before any actual installation is absolutely crucial.
We removed the window frame to see how the tape had expanded. This is what the foam looks like after a few minutes. As you can see that lines had formed on the tape and you can see where the window bracket had been. The tape had expanded following the contours of the window frame and the bracket.
A few things about the Trio that we learned:
- Keep it cool;
- Work quickly;
- Always cut a little longer;
- Keep unused tape rolled up
Here are some videos we took.
Joerg doing an install demonstration
Rafael doing a test install
Tricks & Tips when using Exoair Trio
The PNC SmartHome Cleveland uses Tremco’s ExoAir Trio