Eichler bathrooms are difficult to vent — there’s just very few options for a fan of any sort and while the window in the shower is great, some true cross ventilation is really what’s required.
I had the idea to open the skylight for some fresh air and it worked well. The skylights are held on by 4 screws and are simple to remove. I unscrewed it, popped it off, screwed an 18in 1X3 to one side to prop it up and screwed in the opposite side to the frame. A few days later, I stapled some screen over it… and it worked wonderfully. Albeit very ghetto.
Knowing that the prototype was a success, finding am operable skylight in the right size was the next chore. Big Orange had a Velux that was too big for $400. On a whim, I called my local go-to for doors and asked Tami if they could get in a custom operable skylight. A few phone calls and a week later, I installed the new, operable skylight… it took about 10 minutes to install.
So, if you’re looking for a venting option, contact Tami. The skylight brand is Tru-Frame and they are available in Mill finish (raw aluminum) and the Bronze. The domes are in Clear, Bronze, or White. We used the bronze as it was a better match to our inside brown trim and got the “double dome” for insulation and condensation concerns. They open and close easily with a supplied pole. Mine cost about $350 and was sized to fit a 22in square curb. Yours is likely the exact same size, but measure first.
We have neighbors who have operable bath skylights, and never have ad a problem with them. We considered a venting option in our bath skylight during our foam roof installation. Our roofer informed us that it wouldn’t be up to code, because of the proximity to the vent pipes for the plumbing also coming up through the roof. The worry was that gases would settle back into the house. I don’t know what the code distance really is.