On Wed, 29 May 2019 13:14:02 GMT, Barbara Tritelli
m wrote:

I need some help understanding the reason why the builder had the outside
dryer vent (with screen) installed up so high on the side of my ranch home
that a ladder is needed to access the dryer vent. A neighbor saw trapped lint
clogged and built up against the screen in the dryer vent. The builder said
to remove the screen and use a wet/dry vac to vacuum out all the lint that is
"clogged". I live alone and my home is only 3 yrs. old. **

I am not sure what you mean. Is it in the gable and? Is that above a
masonry wall? He may have just wanted to avoid cutting through the
concrete block.
What is straight behind the dryer? Is it the external wall or does the
dryer vent have to go through the attic to get to an external wall.

I was inspecting a 4 plex condo at the beach a while ago where the 1st
floor was 18 feet above grade and the dryer vents were 9' above that
for the 1st floor and more like 18' for the 2d floor. (36' above
grade). I asked the same question. How the hell do they clean that
vent?