While it makese sense to slightly slope the gutter toward the downspout about 1 4 in.
Roof gutter installation procedure.
Asphalt roofing shingles simply rely on the force of gravity to shed water from rain or snow melt.
If your roof is longer than 40 feet 12 2 m mark the chalk line in the center of the fascia.
But with just a little more work you can use these same parts to put together rain gutters and downspouts that are stronger and better looking too.
Gutters are often installed level for appearance.
Understand the physics of how a sloped shingle roof works.
In the dictionary to shingle is.
If your roof is shorter than 40 feet 12 2 m mark the starting point at the left or right of the roof.
Place corner pieces where panels will meet bends at the edge of the roofing.
With help lift the gutter in place and secure the corner first screwing the bracket into the roof s fascia.
If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.
Secure the rest of the hangers with 2 in galvanized nails or screws.
Almost all home centers and full service hardware stores sell guttering designed for easy installation.
Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging.
Ice and water shield sticks to the wood decking which prevents any water leaks.
Ice and water shield installation next step is installing ice and water shield which is a special type of roofing underlayment.
If the roof shingles and all accessory roof components are arranged and overlapped with this in mind the roof should successfully shed water.
It must be installed at the bottom of the roof and at all roof penetrations chimneys pipe flanges roof connections etc.
Evaluate and plan the gutter replacement project.