Windows, Thermal Bridges, & Other RV Hot Spots

We have a thermal camera, and we know how to use it: identify our top hot spots where the summer heat is turning our home on wheels into a sauna.
We have a thermal camera, and we know how to use it: identify our top hot spots where the summer heat is turning our home on wheels into a sauna.
A lot of the detail work on Avion truck campers is top notch. But windows have come a long way since 1970. After extensive work resealing and reenforcing many of our camper's seams, one of the few remaining leak points is the windows. The current windows along the body are split into two panes. The larger top pane does not open. An understandable choice given that the surface these windows are built on is curved. Framing out a curved window pain and frame that opens and is fit for weather and highway durability would be a huge challenge. So, only the lower pain opens. It is a section just low enough for the pain to be flat. But this also means it is a very small opening: just enough for a little venting.
The cabover windows have been a source of much angst among the Roam Lab crew. It’s one of the most visible windows. It also leaks. While we are reticent to change the exterior appearance of the camper, this is our most notable deviation. We first looked for two small windows to match the original set. But eventually decided to update the look with one, long futuristic window.
We bought at roof hatch for our camper. That is how it started. The reasons were many: we wanted ventilation over the bed, a second point of exit for safety, and easy roof access. Now we just have to install it.