Gravel for Drainage – How to Build a French Drain That Actually Works

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Gravel for Drainage – How to Build a French Drain That Actually Works (2 อ่าน)

22 มี.ค. 2569 04:10

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Perfect for a home improvement blog, YouTube guide, or DIY newsletter

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Water pooling in your yard? Soggy spots after every rain? A French drain might be the solution—and gravel is the star of the show. But not just any gravel, and not just any installation. Here's how to design a drainage system that actually moves water away from your home, using the right stone and a gravel calculator to get your quantities spot on.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">What Is a French Drain?

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">A French drain is a simple trench filled with gravel that directs surface or groundwater away from problem areas. It usually contains a perforated pipe at the bottom to speed up water movement, but the gravel itself does the heavy lifting—filtering soil, allowing water to flow, and keeping the pipe from clogging.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Key components:

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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A trench sloped away from the problem area

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Landscape fabric (to keep soil out)

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Clean, washed gravel (no fines!)

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A perforated pipe (optional but recommended)

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<li style="margin-top: 6px;">
More gravel on top

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</ul>
<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 1: Choose the Right Gravel

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">This is non‑negotiable: use clean, angular gravel. Avoid pea gravel or rounded river rock, which can shift and clog over time. Also avoid crusher run or anything with "fines" (dust/sand)—those particles will wash into the pipe and block it.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Best options:

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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#57 crushed stone (3/4 inch to 1 inch) – the go‑to for French drains

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#3 or #4 stone (1 to 2 inches) – for larger drains or heavy water flow

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</ul>
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Why it matters: Clean stone creates voids that allow water to move freely. If your supplier asks if you want "washed," say yes.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 2: Calculate How Much Gravel You Need

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">This is where the gravel calculator becomes essential. A French drain uses a lot of stone, often more than people expect.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Measure:

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Length of the trench (in feet)

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Width of the trench (usually 12–18 inches)

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Depth of the trench (usually 18–24 inches for most residential drains)

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</ul>
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Calculate volume in cubic feet:
<code style="box-sizing: border-box; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-variant-position: normal; font-variant-emoji: normal; font-stretch: 100%; line-height: 22px; font-optical-sizing: auto; font-size-adjust: none; font-kerning: auto; font-feature-settings: normal; font-variation-settings: normal; font-language-override: normal; font-family: Menlo, Monaco, Consolas, 'Cascadia Mono', 'Ubuntu Mono', 'DejaVu Sans Mono', 'Liberation Mono', 'JetBrains Mono', 'Fira Code', Cousine, 'Roboto Mono', 'Courier New', Courier, sans-serif, system-ui; background-color: #ebeef2; border-radius: 6px; align-items: center; padding: 0px 5px; display: inline-flex; font-size: 0.875em !important;">Length (ft) × Width (ft) × Depth (ft) = Cubic feet</code>

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Then divide by 27 to get cubic yards. Add 10% extra because the trench walls are rarely perfectly straight.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Example:

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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50 ft long, 1.5 ft wide, 1.5 ft deep

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<li style="margin-top: 6px;">
Volume = 50 × 1.5 × 1.5 = 112.5 cubic ft

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Cubic yards = 112.5 ÷ 27 ≈ 4.2 yards

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Order 4.5–5 yards to be safe

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</ul>
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Pro tip: Many gravel calculators have a "French drain" mode or let you enter dimensions. Use it—you'll thank yourself when the delivery truck arrives.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 3: Dig and Slope

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">The trench must slope downhill at 1 inch per 10 feet (about 1% grade). Mark the slope with stakes and a string line before you dig. If water can't flow by gravity, your drain won't work.

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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Dig the trench at least 6 inches wider than your pipe.

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Keep the bottom as smooth and consistently sloped as possible.

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</ul>
<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 4: Line with Landscape Fabric

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Lay non‑woven geotextile fabric (not the cheap woven kind) over the entire trench. Let it drape down the sides and leave extra on both edges. This fabric keeps silt out of the gravel while letting water pass through.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Why woven vs. non‑woven: Woven fabric lets water through but can clog. Non‑woven is preferred for drainage projects because it filters better over time.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 5: Add a Base Layer of Gravel

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Place 2–3 inches of clean gravel in the bottom of the trench. Level it along the slope. This gives the pipe a stable bed and keeps it off the fabric.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 6: Lay the Perforated Pipe (Optional but Recommended)

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Use 4‑inch perforated PVC (schedule 40 or corrugated). Place it with the holes down (toward the gravel) so water enters from below. Connect sections securely.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">If you're only moving surface water and the soil drains well, you can skip the pipe—but for most situations, a pipe makes the system last longer and move water faster.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 7: Fill with Gravel

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Cover the pipe with clean gravel until the trench is nearly full, leaving about 2–3 inches from the top. Use your shovel or a rake to distribute evenly. Compact lightly as you go to prevent future settling.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Step 8: Wrap and Top

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Fold the excess fabric over the top of the gravel, overlapping the edges by at least 6 inches. This creates a "burrito" that keeps soil out. Finally, add a 2‑inch layer of topsoil or decorative stone to blend with your landscape.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Common Mistakes to Avoid

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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Using the wrong gravel: Rounded stone or stone with fines will clog.

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Skipping the fabric: Soil will migrate into the gravel and turn your drain into a mud pipe.

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Insufficient slope: Even a perfect drain won't work if water sits in a flat trench.

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Under‑calculating gravel: Running out mid‑project means a messy restart. Use a gravel calculator and round up.

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Forgetting an outlet: The water has to go somewhere—a dry well, a drainage swale, or a municipal storm drain.

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</ul>
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<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">How Much Does It Cost?

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Gravel is the main material expense. For a 50‑foot drain:

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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Gravel (5 cubic yards): $150–$300 depending on location

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Perforated pipe: $30–$60

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Fabric: $40–$80

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Total DIY cost: $250–$500

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</ul>
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Compare that to a flooded basement or years of swampy lawn—money well spent.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">When to Call a Pro

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">French drains require precise slope and proper outlet placement. Consider hiring a professional if:

<ul style="margin: 16px 0px; padding-left: 18px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">
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Your yard has complex drainage patterns

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You're unsure where to discharge the water

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You need to tie into existing stormwater systems

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You're dealing with heavy clay soil or high water tables

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</ul>
<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Final Checklist

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">☐ Calculate gravel volume using a gravel calculator (add 10%!)
☐ Choose #57 clean, washed crushed stone
☐ Dig trench with 1% slope
☐ Line with non‑woven geotextile fabric
☐ Add base gravel, lay pipe with holes down
☐ Fill with gravel, wrap fabric, top with soil or decorative stone

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Sidebar: What About Pea Gravel?

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Pea gravel is beautiful for walkways and garden beds, but it's not recommended for French drains because its smooth, rounded shape allows soil to migrate and clogs the system over time. If you're using pea gravel for a different project—like a decorative path or patio—be sure to use pea gravel calculator to get your quantity right. The formula is the same: length × width × depth, then convert to cubic yards. Just remember that pea gravel is best kept above ground, not buried in a drainage trench.

<hr style="background: none 0% 0% / auto repeat scroll padding-box border-box rgba(0, 0, 0, 0.1); border: none; height: 1px; margin: 32px 0px; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;" />
<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Your Yard Will Thank You

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">A properly built French drain quietly moves water away from your home and landscaping for decades. The upfront work is a weekend of digging, but the payoff is a dry, usable yard—and peace of mind.

<p class="ds-markdown-paragraph" style="margin: 16px 0px; color: #0f1115; font-family: quote-cjk-patch, Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; font-size: 16px;">Save this guide for your next drainage project!

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kingkhan

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