This is the proper way to install a downspout when it has to go across a lower roof.
Gutter downspout onto lower roof uk.
The water is allowed to run on the roof surface and is collected by the lower gutters.
When this happens it can cause an assortment of damages to your home.
Generally a contractor that drains a gutter onto a lower roof will say that it is an industry standard whereas a contractor that rants against it will say that it s not best building practice.
Also a gutter in a dormer that had no downspout but had the back end towards the roof surface open and the water just flows out the back and onto the lower roof.
March 26 2012by charles buell42 comments.
Gutter talk lets talk roof gutters and downspouts.
2 purchase enough downspout leader to reach from the upper roof gutter to the lower roof gutter as well as from the lower roof gutter to.
Once the designer has determined the roof shape rafter pitch and roof covering then there is little the roofing contractor can do to prevent some of the problems associated.
Buy enough gutter for both the upper and lower roof edges.
This is a very common problem we run in to.
I just had gutters installed by a reputable company but am concerned that one of the downspouts on the upper level of a split roof empties onto the lower roof.
There is no building code citation that forbids a gutter from draining onto a lower roof.
Many instances of downspouts from upper dormer gutters emptying directly onto the lower roof.
2 or 3 story homes are sometimes built with a design flaw.
Saving a few dollars now cou.
We have torrential downpours here occasionally and i am concerned that this will ruin my roof.
I called these out and the owner sent the report to the builder toll brothers.
So it s a matter of what the home inspector or contractor considers acceptable.
The contractor said this is a perfectly normal installation.
The downspout exit sits near the side of the lower roof and water falls off the side before continuing down to fall into the lower roof gutter.
It is very common for dormers and other roof structures that have gutters above the level of the gutters on lower portions of the roof to empty onto the roof surface.
That s when your upper level gutters the gutters highest on your home empty out onto your lower level roof only to be recollected by the lower level gutters.
While this makes the building look interesting it increases the risk of water discharging from either a high level inclined valley or gutter onto a lower level roof.
