French Drain Gravel Hillsboro, OR
Material picks, pricing, and pro tips for french drain gravel projects in Hillsboro, OR.
French drain gravel for Hillsboro
Hillsboro is home to major tech employers and growing suburban development, with french drains becoming standard in home sites and commercial properties facing winter wetness. The city's elevation changes and valley locations create different drainage challenges across town.
Builders and homeowners across Hillsboro rely on #57 crushed stone because it matches the Portland metro's rainfall and soil chemistry. This angular stone maintains pore space water can flow through, surviving years of Pacific Northwest moisture. Landscape fabric underneath and over the stone keeps Hillsboro clay out of the drainage system.
Choosing the material and size
Tons of crushed stone give you consistency. Each piece maintains shape at three-quarters of an inch, creating lasting pores for drainage. This size is not too large to move and not too small to clog.
The region's clay and rain mean smaller aggregate materials fail quickly. Pea gravel is the only choice that lasts. Lay landscape fabric along the trench floor and walls first. Cover the top of the stone with fabric before backfilling. Stone plus fabric plus slope equals 20 to 30 years of service.
Depth, base and how much to order
Hillsboro sits at 200 to 1,100 feet elevation, with higher areas east of town. Winter runoff moves quickly downslope, but groundwater sits high in valleys. Install drains 18 to 28 inches deep in Hillsboro, using 12 to 20 inches of stone. The city's variable terrain means drain design varies by lot.
Most Hillsboro residential drains use less than 2 tons. Measure your trench in feet, multiply length x width x depth, divide by 324 to find tonnage. A 100-foot drain, 18 inches wide, 18 inches deep of stone, needs about 0.8 tons.
Use the calculator to size your order. Enter your ZIP code to see delivery in Hillsboro and pricing.
Local conditions that affect the build
Hillsboro's 110,000 residents share the Portland-Vancouver-Hillsboro metro area's challenges. Winter moisture and clay soils make subsurface water a permanent condition for homes below grade. Spring and fall are ideal installation seasons in Hillsboro.
Portland (14 miles), Vancouver (22 miles), Gresham (27 miles), and Salem (34 miles) all experience Hillsboro's same wet climate and need similar drainage solutions. Utilities are common in Hillsboro's subdivisions. Call 811 for a locate before digging. After marking, verify your trench route slopes downhill toward the outlet.
Delivery and getting started
Choose #57 Crushed Stone with pricing delivered to your Hillsboro location by ZIP. Truck delivery is included; you select where the truck can safely dump. Begin by spreading landscape fabric on the trench floor with seams overlapped 12 inches. Pour the stone, spreading it evenly. Bring the fabric up and over the stone, then add soil on top. French Drain Gravel projects in Hillsboro handle suburban moisture well. A drain installed in spring will prove itself when winter rains arrive.
About French Drain Gravel projects
French drains intercept water and route it away from building foundations, under-house spaces, and garden areas. Setup requires excavating a trench, placing landscape fabric for separation, loading with permeable crushed stone, and finishing with topsoil.
Recommended materials for french drain gravel
How a french drain gravel project goes
- Assess the drainage problemLocate spots where water gathers or flows into the ground. Evaluate your soil composition, water table depth, and terrain slope. Log where puddles form during rain to verify the problem area and water flow path.
- Design the trench routeDesign the trench to catch water above the structure needing protection. Channel it downhill to daylight (an outdoor outlet) or into a dry well. Navigate around underground utilities, boundary lines, and surface features.
- Prepare and lay drainageExcavate to proper depth. Position landscape fabric along the trench bottom. Fill with #57 crushed stone to form a water-permeable conduit. Finish with soil and return ground to grade.
- Verify water flowEnsure the outlet is clear and positioned below the trench. Test with water or monitor during rainfall to confirm drainage works. Look for water pooling or reverse flow.
- Maintain the drainCheck your outlet once yearly for clogs. Change fabric if sediment accumulation restricts water passage. After heavy storms, watch for early system failure indicators.
Estimate your material
Work out your material
A planning figure, not a guarantee. Order roughly a tenth extra to cover settling and uneven ground.
French drain gravel in Hillsboro's climate
What works in Hillsboro starts with how Oregon weathers a year. Wet winters and dry summers. Stone with strong drainage prevents winter saturation under traffic. For french drain gravel work specifically, that means choosing material that handles local moisture and traffic loads without re-dressing every season.
The small market profile of Hillsboro also shapes how a project runs. Most jobs are residential, with the occasional school or municipal project. Truck access is usually wide and turnarounds run fast.
Where we deliver french drain gravel material in Hillsboro
Our delivery footprint around Hillsboro covers the core city plus a typical 35-mile radius. Recent french drain gravel drops have included:
- older single-family blocks in and around Hillsboro
- newer subdivisions on the outskirts in and around Hillsboro
- commercial pad sites near the freeway in and around Hillsboro
- horse properties on the rural edge in and around Hillsboro
If your address is outside that radius, send your ZIP through the contact form and we will confirm coverage within an hour.
Pricing for french drain gravel in Hillsboro
Here is what the recommended french drain gravel materials are running in Hillsboro right now. Full-truck orders (16 tons or more) typically save 15 to 20 percent off these per-ton rates.
| Material | Price from |
|---|---|
| #57 Crushed Stone Delivery in Hillsboro, OR | Quote on request |
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Why is #57 crushed stone right for Hillsboro?
Hillsboro's Portland metro moisture and clay require stone that creates lasting pore space. Sand and pea gravel collapse in this climate. Only #57 stone resists settling for decades.
How much stone does my Hillsboro drain need?
Most Hillsboro drains use less than 2 tons. Measure in feet, multiply length by width by depth, then divide by 324. A 100-foot drain, 18 inches wide and deep, needs about 0.8 tons.
How deep should a Hillsboro drain run?
Hillsboro's variable elevation means depths vary by location. Install 18 to 28 inches deep with 12 to 20 inches of stone. Higher terrain may allow shallower drains; valleys need deeper runs.
Does Hillsboro's winter freeze drains?
No, if properly sloped. Crushed stone resists freezing because water moves through quickly. If water pools at the outlet in extreme cold, it may ice. Keep slopes clear and maintained.
When is the best time to install?
Spring and fall are optimal in Hillsboro. A drain installed in spring will prove itself next winter. Winter brings mud and safety concerns; summer may stay dry.
Can I use smaller gravel instead of #57?
No. Smaller aggregate fails in Hillsboro's clay and moisture. Pea gravel rounds and settles; sand does not maintain drainage. Only #57 crushed stone creates and maintains pore networks for long-term performance.
Is landscape fabric really necessary?
Yes, absolutely. Fabric prevents Hillsboro's clay from washing into the stone. Lay it floor and walls, pour stone, fold over top. Without fabric, sediment clogs the drain quickly.
How long do Hillsboro french drains last?
Well-designed and installed drains last 30 to 40 years in Hillsboro. The stone is permanent and does not degrade. Landscape fabric lasts decades. Annual inspection and outlet cleaning extend life beyond base expectations.