Standing water is not just an eyesore. Here are the warning signs of a drainage problem and the fixes that actually last.
Standing water is rarely the problem people call us about. They call about a patio corner that has dropped half an inch, a retaining wall leaning where it did not used to, a crawlspace that smells, or a strip of lawn that will not grow whatever they put in it. Those are all the same problem, arriving late.
Water is patient. It works for months or years before it produces anything you would call damage, which is exactly why drainage is the thing most worth catching early and the thing most often left until it is expensive.
The early signs, while they are still cheap
The tell is almost never a pond in the yard. It is subtler than that:
- A patch of lawn still soggy two days after the rest has dried.
- Moss or algae on a walkway or patio, particularly on the north side.
- A faint musty smell near a crawlspace vent.
- Mulch that has migrated, leaving a fan of silt across a walk after a storm.
- A hairline crack in a patio that gets slightly wider each year.
- Shrubs on one end of a bed that never do as well as the rest, no matter what you feed them.
That last one fools people. Plants sitting in ground that stays saturated are drowning — roots need air as much as they need water — and the symptoms look enough like underfeeding that a lot of fertilizer gets bought to treat a plumbing problem.
Why clay makes this our problem specifically
Much of the Triangle and the counties around it sits on dense red clay. Sandy soil takes water down through it. Clay does not. It absorbs slowly, holds what it takes, and once it is saturated the rest runs across the surface looking for the lowest thing it can find.
On clay, water does not soak away. It goes somewhere. The only question is whether you chose where.
This is also why the problem shows up years after the house was built. New construction compacts the soil around a foundation with heavy equipment, then backfills and grades it to look right on handover day. Settlement over the following few seasons is what turns a correct grade into one that runs the wrong way, and half an inch is enough.
Walk the property in the rain
The single most useful thing a homeowner can do costs nothing: put a coat on during a real downpour and walk the property. Not after — during.
You are looking for where water arrives, not where it collects. Follow it back. A wet corner by the patio is frequently a downspout forty feet away discharging onto a slope that carries it there. A soggy side yard is often the neighbor's roof, perfectly legally, and no amount of work in the side yard itself will fix it.
Take photographs while it is happening. A puddle is much easier to solve when somebody can see how it formed, and by the time we get there on a dry Tuesday the evidence has gone.
The fixes, and what each one is actually for
These are not alternatives to choose between. They solve different problems and are frequently used together.
Grading
Re-shaping the ground so water leaves rather than gathers. The first thing to look at and often the cheapest. If the ground falls towards the house, nothing installed downstream of that is doing more than managing a mistake.
Downspout extensions
Unglamorous and frequently decisive. A roof sheds an enormous volume in a storm, and a downspout that empties at the foundation is delivering all of it to the worst possible place. Carrying it ten or fifteen feet out solves a surprising share of the wet basements we get asked about.
French drains
A gravel trench with perforated pipe that intercepts water moving through the soil and takes it somewhere chosen. The right answer for a persistently saturated area, and the wrong answer for surface water sheeting off a hard surface, which will simply run over the top of it.
Dry creek beds
A stone channel that carries surface water along a deliberate route. It does real work in a storm and looks like a garden feature the rest of the year, which is why it suits the front of a house where a drain grate would not.
Catch basins
A grated box at a genuine low point, piped out to daylight. Useful where the ground simply cannot be re-graded — between two houses, or at the base of a slope that has nowhere else to go.
What we will not do
We will not sell you a bag of topsoil and a bag of mulch to fill a wet spot. That is not a fix, it is a costume. The water still arrives in the same volume from the same direction; it now arrives at slightly higher ground and finds the next low point, which may be closer to the house than the one you just filled.
We will also tell you when the answer is not landscaping. A good proportion of drainage calls turn out to be gutters — undersized, blocked, or missing over a doorway — and that is a cheaper trade than ours. Saying so costs us a job and saves you one.
When it is worth a look
If a spot on your property never seems to dry out, if a patio or a walk has started to move near a low point, or if you find yourself planting the same corner for the third time, it is worth having someone walk it with you before the next wet season rather than after.
Drainage is one of the few jobs in this trade where doing it early is dramatically cheaper than doing it well later. A regrade and a downspout run is ordinary work. The same water, left alone for five years against a foundation or under a wall, stops being a landscaping question entirely.
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