Guttering Between Two Pitched Roofs

Get on a ladder after a rainstorm and look in the gutter.

Guttering between two pitched roofs. Get 7 or 8 inch gutters. Valley gutters are generally considered to be a problem area. Flat roofs operate with the same basic principle but of course their lower angles mean that gravity isn t quite as effective in shedding water rapidly. Hold one end of the level against the roof level it and then measure the distance between the roof and the underside of the level at its midpoint which gives you a 12 inch run.

You can measure pitch with a 2 foot level and a tape measure. Take one look at a pitched roof versus a flat roof and the structural differences are quite obvious. A 5 inch gap for instance is a 5 in 12 pitch. For example between a double lapped plain tile and a single lapped large format interlocking tile.

The valley gutter problem areas can be made worse where there are surrounding trees and associated leaves and branches that can block the valley gutters up. Roof pitch is very important for right roof gutter sizing. Increase the pitch of the gutter. The detail can be formed using preformed polymer based products traditional lead work or more modern lead replacement flashings.

You want at least a quarter inch of slope for every 10 feet. The steeper a roof s pitch the more windblown rain it can collect. They ll cost more and probably require a custom order through a professional installer. The standard is about inch per 10 feet.

Gutters need to be pitched toward the downspouts for the water to flow properly. A bonding gutter refers to a detail which weathers the vertical junction between different roof coverings. Once you know pitch you can find your roof pitch factor in the table below. To correct this yourself you ll need to measure from the peak to the downspout.

A valley gutter is where two main roofs meet or where there is a change in roof direction.