ᐅ Toilet height too high – should it be lowered or left as is?

Good morning,

I was convinced by my plumber and builder to have the toilets installed higher than the “standard” height. However, it seemed like this higher installation is now actually quite common.

Now, the screed layer in the upstairs bathroom was done incorrectly. Somehow, it ended up lower than planned. This only became apparent relatively late. We are already living in the house and quickly noticed that the toilet on the ground floor is fine (although it still feels odd since we’re not used to the height from our old rental apartment). But upstairs, the toilet is definitely too high. My wife can barely place her feet on the floor.

My builder mentioned there is a so-called “patch set” that can be used to raise the toilet even higher. He immediately called his regular plumber, who confirmed this and even said it’s better this way because it’s less prone to clogging. I didn’t quite understand this, but okay.

I then called the plumber I hired specifically for heating and sanitary work and explained the situation. At first, he acted like I was talking nonsense but said he would look into it. He contacted two manufacturers (Grohe and another one), but they said it wasn’t possible. He still wanted to check with Villeroy & Boch since my toilet and wall-hung frame are from that brand.

That was a week ago. Unfortunately, he’s somewhat unreliable.

Is there anyone here familiar with this or who has experienced a similar problem? Is this “patch set” actually a thing? Or are there other, possibly better solutions?