I can really imagine that looking great on your house! But I would choose internal muntins, meaning the muntins between the glazing. We currently have muntin windows in our interim apartment, and the cleaning lady really cursed a lot last week...
Do you already have a move-in date?
Unfortunately not. The plan is for the house to be sealed by winter, so windows and doors installed, etc. I am aiming for summer 2023.
In the previous house, we had muntins in the glazing. Definitely easier to clean.
But exterior muntins definitely look better ;)
That’s true, but I think regarding the U-value it would be better to have them within the glass. And also because it’s less effort to clean. If we use muntins at all, we’ll see.