Retaining Walls in Washougal, WA
Rock, wind and river ground. Segmental block, natural stone and boulder walls engineered to hold Clark County grades and drain properly behind the face.
Free Estimate in WashougalRetaining Walls in Washougal: what is different here
Washougal ground varies more than almost anywhere else we work. Some lots have basalt within a foot of the surface, which makes excavation slow but gives you excellent bearing. Others down near the river are soft alluvial soil where footing preparation is the entire job.
Boulder walls suit a lot of Washougal properties. They handle the rocky, wooded character of the area, they need less precise excavation than block, and on a large rural lot they look far more at home. They do need machine access and more depth than block, which is the trade-off.
Where a wall sits on an exposed site, we account for Gorge wind loading on anything built on top of it — a fence or pergola on a wall is carrying more lateral load here than the same structure would in Ridgefield.
How we build it
- Compacted crushed rock footing on undisturbed soil
- Buried base course for stability
- Clean drain rock and filter fabric behind the full face
- Perforated drain pipe daylighted to a real outlet
- Geogrid soil reinforcement where the design requires it
- Honest guidance on when an engineer and permit are needed
A retaining wall is a structure, not decoration. It is holding back tons of saturated clay, and in this climate that clay is saturated for six months of the year. The walls that fail around here almost always fail for the same reason: nobody dealt with the water behind them.
Around 40 minutes east, at the mouth of the Gorge. Estimates in Washougal are free, and the price we put in writing is the price.
Full detail on how we build retaining walls · Everything we do in Washougal
Retaining Walls we have built
Retaining Walls in Washougal
Free on-site estimates across Clark County. We walk the property with you, tell you what it actually needs, and put a fixed price in writing.
Retaining Walls in Washougal: questions we get
Does the Gorge wind affect a retaining wall?
Not the wall itself — mass block structures are indifferent to wind. Where it matters is anything mounted on top of it. A fence or screen on a wall becomes a sail with a long lever arm, and that load transfers into a structure designed for soil pressure, not for wind.
Can we put a fence on top of our new wall?
Yes, if it is planned while the wall is being designed rather than added afterwards. Post positions, sleeving and the extra load all need to be part of the original build. Drilling into finished block to fix posts, on a windy site especially, is how a good wall gets compromised.
Is the ground here rocky like Camas?
In places, yes — Washougal shares the same steep, rocky ground with basalt near the surface on some properties. It affects the footing excavation and the cost. On sites where we think it is likely, we say so before quoting rather than treating it as a mid-project discovery.
Does a wall near the river need extra consideration?
Often. Proximity to the Washougal or Columbia can bring shoreline or floodplain regulation into play, and low ground near the water frequently has a high seasonal water table — which changes what happens behind the wall considerably. It is a design and permitting conversation first.
What happens behind a wall on ground with a high water table?
The drainage has to be designed for the possibility that the ground it is draining into is itself saturated for part of the year. A drain line that outlets into wet ground does nothing in the season it is needed, and the wall then carries the full hydrostatic load it was supposed to be relieved of.
Can walls terrace a sloping Washougal lot?
Yes, and the approach is the same as Camas — shorter walls with usable space between them, spaced far enough apart that the upper does not surcharge the lower, with drainage designed for the whole slope rather than each wall separately.
Do we deal with the city or the county for wall permitting?
It depends whether your address is inside the City of Washougal or in unincorporated Clark County, with the possibility of additional shoreline review near the water. Because wall thresholds differ and surcharge lowers them, we confirm which applies before quoting.
Can a wall help with erosion on an exposed slope?
It can, though erosion is usually a water problem before it is a soil-retention problem. Wind-driven rain finding a route down an unplanted slope will keep working regardless of a wall at the bottom. The durable answer normally pairs the structure with planting and proper surface drainage above it.