Drain pipes work by gravity, and the slope is what carries the waste away. Too little slope leaves water standing, and too much leaves the solids behind.
The rule
Most home drain lines slope a quarter inch per foot, which is just enough to move water and solids together without leaving either behind.
The too-flat
A line that is too flat drains slowly and lets solids settle, which is how recurring clogs start.
The too-steep
A line that is too steep lets the water run away from the solids, which then build up and block the pipe.
The check
A level with a slope marking, or a camera inspection, confirms the grade. rain and older housing stock mean corroded fittings and slow drains show up often In Gresham, settling can throw off an old line's slope.
The quarter
The classic quarter-inch-per-foot slope moves water and solids together. Remembering that one number covers most home drains.
The call
Get the grade right so the drain stays clear. Call 888-217-3585 and Gresham Plumbing Helpers will match you with a Gresham pro.
Plumbing in Gresham: what to know
In Gresham, rain and older housing stock mean corroded fittings and slow drains show up often. Pros in our network know the local quirks and bring the right parts on the first visit.
Across Multnomah County — from Fairview, Troutdale and Happy Valley to ZIP codes like 97030, 97024, 97080 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.
Need a hand in Gresham?
If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and Gresham Plumbing Helpers will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in Gresham.