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★★★★★ 5.0 on Google · 61+ reviews

TopFlow Gutters

Downspouts & Drainage

Downspouts That Move Water Away From Your Foundation

Your gutters are only as good as the downspouts that drain them. We add, upsize, relocate and extend downspouts so roof water ends up far from your basement walls.

Sizes
2"×3" and 3"×4" downspouts
Fixes
Wet basements, pooling, erosion
Options
Extensions, relocations, added outlets
Estimate
Free

Why downspouts matter

A 1,000-square-foot section of roof sheds roughly 600 gallons of water in a one-inch rain. All of it goes down your downspouts. If they are too small, clogged, or dump next to the foundation, that water ends up in your basement, under your slab, or washing out your landscaping.

What we do

  • Add downspouts at overflowing corners and long runs.
  • Upsize to 3”×4” for larger roofs and 6-inch gutters.
  • Relocate downspouts away from walkways, patios and driveways.
  • Install extensions to carry water several feet from the foundation.
  • Test underground drain lines and reroute above ground when they have failed.
  • Fix upper-roof downspouts that dump onto lower roofs.

Signs your downspouts need attention

  • Water pooling near the foundation after rain
  • Damp or wet basement walls
  • Erosion or dead patches where downspouts discharge
  • Gutters overflowing near a downspout (clog or undersized)
  • Ice on walkways in winter beneath downspouts
Black seamless gutters and downspouts on a white colonial
Two-story home with new gutters and downspouts
Black seamless gutters and downspouts on a brick apartment building
New downspout carrying water to grade on a home with a walk-out basement

The process

How it works

  1. 01

    Book your free estimate

    Fill out the form or call. We confirm a time by text, usually within the hour during business hours.

  2. 02

    We measure & quote on site

    Mark walks the roofline, checks fascia and downspouts, and gives you a written, itemized quote. No pressure.

  3. 03

    Install in 1–2 days

    Seamless runs are formed on site to the exact length. Guards are fastened to the gutter, not under your shingles.

  4. 04

    Walkthrough & warranty

    We water-test, clean up, walk the job with you, and register your warranty.

Reviews

What homeowners say

5.0

★★★★★

61+ Google reviews

Read our 61+ reviews on Google →

FAQ

Downspouts & Drainage questions

How far should a downspout discharge from the house?

As a rule of thumb, several feet away from the foundation and onto ground that slopes away from the house. Closer than that and the water soaks the soil right against your basement walls.

Should I upgrade to 3x4 downspouts?

For larger roofs and 6-inch gutters, yes. A 3"×4" downspout carries significantly more water than a standard 2"×3" one and is much less likely to clog.

My downspout goes into an underground pipe. Is that OK?

It is fine if the pipe is clear and drains somewhere safe. Many older underground lines are clogged or broken, which backs water up into the gutter and the foundation. We test them and recommend the best fix.

Can you add a downspout where water overflows?

Yes. Adding an outlet and downspout at a problem corner is one of the most effective fixes for overflow.

Ready to stop worrying about your gutters?

Free in-home estimate, written quote, and most installs finished in 1–2 days.

Call Now Free Estimate