#78 Crushed Stone in Iowa

Tile outlet drainage on an acreage can stay exposed to wet soil and repeated freezing. Loess and glacial till can retain moisture around the work. #78 Crushed Stone brings washed, angular pieces with very little fine material to that part of the work. The resulting course suits drainage layers and pipe bedding, where a dense, fine-filled aggregate would serve a different purpose.

For paver walks or patios, place this stone in the intended bedding or drainage course and keep the design focused on shedding moisture before winter frost sets in. Its chipped faces give it a different character from rounded gravel, while the clean grading maintains open space through the layer. It can also be used behind retaining walls when the project calls for a drainage layer. This can matter on ground that heaves and stays damp during seasonal freeze-thaw cycling.

Permeable Paver Bedding

For permeable paver installations, this stone can serve as the bedding and joint material so water can move through the paved surface.

Drainage Layers

Place these washed chips below walkways or beside foundations and retaining walls to provide a route for water.

Pipe Bedding

Placed around drain or utility lines, these angular pieces create steady support and help reduce open pockets.

Walkway & Patio Base

Use beneath paths, patios, or shed pads for a compacted layer that also allows drainage.

Free Draining

With little to no fines, washed chips provide quick water movement.

Locks in Place

Because the particles are angular rather than rounded, they interlock and help hold the layer in position.

Easy to Spread

For close-quarters home projects, the small chips can be leveled by hand using a rake or screed.

Drainage, Bedding, and Base

Suitable for drainage, pipe bedding, and base layers within one job.