Best 36-Inch Concrete Splash Blocks and Alternatives for Downspouts

A true 36-inch concrete splash block is not listed among the products provided. The closest listed solid concrete option is a 30-inch NuCast block, while two products are molds for making your own concrete splash block. The decorative turtle option measures 9.1 by 6.7 inches, so it is not a 36-inch substitute. Compare the listed dimensions and product types before choosing; buyers who need an exact 36-inch length should verify dimensions with the seller before ordering.

NuCast Precast Concrete Splash Block

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Best for: Buyers who want a ready-made, solid concrete block and can use a 30-inch length rather than an exact 36-inch one.

NuCast lists this product as 3 inches high, 11 inches wide, and 30 inches long. It is made from solid precast concrete and is intended to sit under a downspout to help divert water away from a home’s foundation. The listing also says it is made in the USA using locally sourced materials.

Choose this if you value a finished concrete product over making one from a mold. Its listed 30-inch length makes it the closest ready-made concrete option in this selection, but it is six inches shorter than the requested 36 inches. Confirm the required coverage and placement before buying.

SvitMolds Decorative Downspout Mold

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Best for: DIY users who want to cast a decorative concrete splash block at home.

This listing is for a mold, not a finished concrete block. Its stated size is 21.26 by 9.84 by 2.36 inches (540 by 250 by 60 millimeters). The mold is made from ABS plastic listed at about 1.9 to 2 millimeters thick. The product details caution that wall thickness may be less in some areas because of the mold’s geometry.

Choose this if you want to make your own block and the mold’s dimensions suit your project. It is not a 36-inch mold, so a single casting from it will not provide a 36-inch-long block. The listing does not specify casting materials or a finished-product weight.

BETONEX Downspout Splash Block Mold

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Best for: Buyers interested in casting a concrete block for drainage with a decorative yard appearance.

BETONEX describes this product as a concrete rain-gutter mold and DIY cement form. Its stated purpose is to create a concrete splash block that directs rainwater away from a foundation while adding style to the yard. Unlike the SvitMolds listing, the supplied product information does not give the mold’s dimensions or material.

Choose this if you prefer a do-it-yourself casting project and want a form described for both drainage and garden decor. Avoid assuming it will make a 36-inch block: check the mold dimensions with the seller first. The available details also do not identify the concrete mix or casting instructions.

GARDEN WHISPER Turtle Splash Block

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Best for: Buyers who want a small decorative downspout accessory rather than a long concrete splash block.

This garden ornament depicts three turtles climbing over rocks. The listing gives its dimensions as 9.1 by 6.7 inches and says to place it beneath a downspout, adjusting it so it slopes away from the house. Its decorative design may suit buyers looking to add a focal detail near a gutter outlet.

Choose this for its compact, decorative format, not as a 36-inch drainage run. The stated dimensions are much smaller than the requested length, and the supplied information does not specify that it is made of concrete. Check the material and placement needs before treating it as a substitute for a conventional block.

Buying Guide: How To Choose A Downspout Splash Block

Do you need an exact 36-inch length?

Measure the area beneath the downspout and decide whether 36 inches is a strict requirement or an approximate target. Of the listed products, the NuCast block is 30 inches long. The two molds have no listed 36-inch dimensions; SvitMolds specifies a 21.26-inch mold length. Confirm measurements before purchase if the block must reach a particular point.

Should you buy a finished block or a mold?

A finished product is the simpler choice for buyers who do not want to cast concrete. A mold is for someone prepared to make a block themselves. The SvitMolds and BETONEX items are forms, so they should not be mistaken for ready-to-install concrete blocks. Consider the time, materials, and mold dimensions needed for a DIY project.

What dimensions matter besides length?

Compare width and height with the downspout outlet and the area where water needs to flow. NuCast lists a width of 11 inches and height of 3 inches. SvitMolds lists a mold width of 9.84 inches and depth of 2.36 inches. For products without full measurements, request dimensions rather than estimating from a product photo.

When is a decorative option appropriate?

Decorative designs can suit visible garden areas, but size and water direction still matter. The turtle ornament is compact at 9.1 by 6.7 inches, while the BETONEX mold is described as combining drainage and yard decor. Neither listing establishes a 36-inch finished length.

Frequently Asked Questions

Is any listed product a 36-inch concrete splash block?

No. The supplied ready-made concrete block is 30 inches long, and the listed mold dimensions do not reach 36 inches.

What is the closest listed ready-made concrete option?

The NuCast precast concrete block is 30 inches long, 11 inches wide, and 3 inches high.

Are the SvitMolds and BETONEX products finished blocks?

No. They are molds intended for making concrete or cement splash blocks.

Can the turtle ornament replace a 36-inch block?

Its listed dimensions are 9.1 by 6.7 inches, so it is not a same-length replacement for a 36-inch block.

What should I verify before ordering?

Check the finished product’s length, width, height, material, and placement requirements. For a mold, confirm its dimensions and what is included.