US
Naacoo

Naacoo Downspout Splash Block 24 Inch

  • Size: 1 count
  • Item Weight: 1.52 pounds
  • Color: Black
  • Power Source: Corded Electric

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A sturdy, stakeable alternative to a flexible extension for anyone who wants water diverted right at the downspout rather than routed far away.

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ASIN: B0DS5XSVNPModel: 1 pack sbCategory: Gutters

Overview

A two piece downspout splash block from Naacoo, molded in UV-resistant PP with a stepped, sloped design that channels roof runoff away from the foundation. Each 24 inch black block can be staked down with the included fixing nails or set alone in a tighter space.

Rather than a single flat ramp, Naacoo builds in a stair-step drop and a rippled surface meant to slow and spread the water rather than just funnel it, and the two pieces can be run end to end for a longer path. The black color is intended for placement in soil rather than on grass, where the brand also sells a green version.

  • 24 inch length, 2 pieces per pack
  • PP construction rated for 500 lbs
  • 15 degree slope for water flow
  • Includes 2 PP fixing nails

Who it's for

Good for a spot with visible bare soil at the downspout base where a rigid, stake-down block is easier to keep in place than a flexible hose. Skip it if the ground there is lawn, since the maker recommends its green version for grass.

Pros and cons

Pros
  • Stakeable with included fixing nails
  • Rated to bear up to 500 lbs
  • Two pieces can splice into a longer run
  • UV-resistant PP resists fading and cracking
Cons
  • Black color is meant for soil, not lawn
  • Fixed 24 inch length per piece limits reach versus a flexible hose

Performance notes

The stepped, sloped surface is rated to hold up to 500 pounds, so it can be walked on without cracking, and pre-made holes at each end accept the two included fixing nails to keep it from shifting in heavy rain or wind. The two pieces can be used separately in a tight footprint or spliced together for a longer run.

Specifications

BrandNaacoo
Model1 pack sb
Dimensions & fit
Size1 count
Item Weight1.52 pounds
Product Dimensions12.7 × 10.9 × 3.2 inches
Power & efficiency
Power SourceCorded Electric
Construction & materials
ColorBlack
Included components
Item Package Quantity1
Other details
Item Model Number1 Pack Sb
Part Number1pack

Frequently asked questions

Can the Naacoo splash blocks be used on grass?

The black version is meant for soil placement; Naacoo sells a dark green version intended for lawn areas.

How are the Naacoo splash blocks held in place?

Each block has two pre-made holes that accept the included fixing nails to anchor it against wind and heavy rain.

Can the two splash blocks be used separately?

Yes, each 24 inch piece works on its own in a smaller space, or the two can be joined for a longer water path.