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What to measure for gutters, and what each number is for

A short list, taken from the ground, that prices a job on the spot.

4 min read

Gutters have the shortest measurement list of any trade here, which is why a gutter job can be quoted from the driveway while the homeowner is standing next to you.

MeasurementWhat it isWhat it drives
Gutter runLinear feet along the eaves Gutter, hangers, labor
DownspoutsCount, and drop height each Downspout, elbows, straps
Outside cornersExternal miters Corner pieces
Inside cornersInternal miters Corner pieces
End capsOpen ends of each runEnd caps
Guard lengthRun getting leaf protection Gutter guard

Hangers are a rate, not a count

You don't count hangers, you derive them: one every 24 to 36 inches of run. That is exactly the kind of thing a multiplier handles — a hanger every 30 inches is run_ft × 0.4. Set it once and stop counting.

Downspouts are two numbers

A count alone underprices a two-storey house. Each downspout needs its drop height, because the material is per foot and a 22-foot drop costs three times a 7-foot one. Record the count for elbows and straps, and the total footage for the pipe itself.

Corners are what turns a simple house into a complicated one

Two houses with 160 feet of gutter can be very different jobs. A straight ranch has four corners; a cut-up roofline can have fourteen. Every miter is a cut, a seal, and a leak that gets called back in three years. Count them and price them.

Why this trade rewards quoting on the spot

Six numbers, all takeable from the ground in a few minutes. If you can quote before you leave the driveway, you're usually the only one who has, and the first contractor to put a number in front of a homeowner tends to win the job.

A package is what makes that possible — the arithmetic happens as you type the measurements.

ExteriorPro does this arithmetic for you

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