The water is allowed to run on the roof surface and is collected by the lower gutters.
Placement of gutters where roof pitches meet.
Avoid locations with obstacles like electric meters hose bibs or sidewalks.
Place downspouts in inconspicuous locations if possible.
Gutter can be run level for appearance but addition downspout will be necessary see section on proper gutter and downspout sizing.
The incline should be approximately one inch for every sixteen feet.
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.
The gutter troughs and downspouts must be installed with this pitch in mind so that water flows down instead of remaining stagnant in the gutter trough.
Determine what works best for your house before ordering gutters and attachments.
How to install gutters in 8 steps.
Working out gutter slope as a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.
The highest tip of the guttering should gently slope downwards to end at the downspout.
For especially long gutter runs of 40 feet or more the slope or pitch should start in the middle diverting the water to a downspout at each end.
To prevent this you should place gutters a few inches lower the roof.
As you can see proper gutter placement plays an integral role in the maintenance of your house.
Here are some guidelines for placement of downspouts.
Steeper pitches require less clearance.
Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12.
Often proper placement of downspouts is a more cost effective method that achieves better results simply by reducing the volume of roof runoff soaking into the ground.
As a general rule at least one downspout should be placed per every 40 linear feet of gutter.
This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.
Gutters should be placed below the extended roof line so that snow and ice can slide clear.
Downspouts on gutters that drain large roof areas or if you live in an area with torrential rains.
For gutter runs longer than 40 feet it s best to pitch the gutter down from the middle to a downspout at each end.
Gutter should be pitched 1 16 or greater per foot for proper drainage.
For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.
Locate downspouts in unobstructed areas where water can be directed away from the house.
The next factor to take into account is the pitch of your roof because the pitch will cause water to flow in a certain direction.
Gutter talk lets talk roof gutters and downspouts.
Blind valleys simplify framing to keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.
