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Downspouts

Downspout Replacement Signs: When to Upgrade

Downspouts fail before the rest of the gutter system. Here's how to spot when yours need replacement and what upgrading can solve.

August 15, 2022
6 min read
By Gutter Brothers

Why downspouts fail first

Downspouts carry the highest water velocity in your gutter system — everything your gutters collect funnels through them. That concentrated water flow accelerates wear, especially at joints and elbows.

Downspouts also take physical abuse that gutters don't. Kids hitting them with toys, lawnmowers bumping them, garden hoses catching them, vehicles backing too close — all cause damage over time. That damage compounds into leaks and eventual failure.

Visible signs of downspout trouble

Walk your home's perimeter and look for:

Visible dents or crushed sections — impedes water flow and creates stress points.

Rust streaks on the downspout or wall behind it — indicates internal corrosion working through.

Separation at elbows or connectors — daylight visible at joints.

Sagging or pulling away from the house — bracket failure.

Peeling or bubbled paint — water has gotten behind the paint layer.

Pooling water at the downspout base — water isn't flowing away from the foundation.

Less obvious signs

Some failure modes aren't visible but still matter:

Overflow during storms — if water comes over the gutter near the downspout, the downspout may be undersized or clogged.

Foundation moisture issues — basement dampness, efflorescence on walls, or wet crawl space indicates water isn't getting moved away from the foundation properly.

Landscaping erosion — channeled erosion lines in soil near downspouts show the downspout is dumping water that's not being managed (needs a splash block or extension).

Mosquito activity near downspouts — standing water in a partially-clogged downspout breeds mosquitoes.

Upgrades that solve problems

When replacing downspouts, consider:

2×3 to 3×4 upgrade — 3×4 downspouts carry 2x the water volume. Worth it on larger Reno homes or high-volume roof areas.

Round instead of rectangular — cleaner appearance, often better flow.

Underground drain tie-ins — routes downspout water below-grade to daylight away from the foundation.

Splash blocks or rain chains — for areas where underground tie-ins aren't feasible, splash blocks direct water flow.

Cost expectations

Downspout replacement pricing:

2×3 aluminum downspout — $80-130 installed each.

3×4 aluminum upgrade — $110-170 installed each.

Copper downspouts — $280-480 installed each.

Most homes have 4-6 downspouts. Full downspout-only replacement typically runs $400-1,000.

Call Gutter Brothers at (775) 502-1844 for an on-site assessment of your downspouts.

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