How to Build a Gravel French Drain Before Winter Near Murrells Inlet SC

To build a gravel French drain before winter near Murrells Inlet, trench along the problem drainage path at a consistent downhill slope, lay perforated pipe wrapped in filter sock, backfill with #57 washed crushed stone to grade, and direct the outlet to daylight or a dry well downhill of the problem area. Do this before November when fall rains arrive. C-Scapes Mulch and More carries bulk #57 crushed stone for French drain projects across the Grand Strand.

Why fall is the right time to install a French drain near Murrells Inlet

September and October on the Grand Strand are transitional months with lower rainfall than summer, making trenching easier and keeping the project site workable. Installing in November or December means working in colder, wetter conditions. Getting the drain in before October is the right target for most homeowners dealing with known drainage problems.

What stone do you need for a French drain?

#57 washed crushed stone is the standard. The angular faces allow excellent water flow between stones while maintaining stability as backfill. Washed stone stays clean without the fines that reduce drainage over time. Avoid pea gravel for French drains as the smooth particles tend to migrate through filter fabric and can compact in the trench.

How much stone does a typical residential French drain require?

A 12-inch-wide, 18-to-24-inch-deep trench uses about 2.5 to 3 cubic yards per 50 feet of run, or 3 to 4 tons of #57 stone. Stop by with your trench dimensions and we will calculate your stone quantity. See our foundation drainage guide for related details.