Window Well Covers and Drainage in Wichita

A window well cover in Wichita runs $150 to $600 and a drainage rebuild $300 to $1,000, and on this ground you usually want to price both. Most of the county sits on Goessel and Rosehill silty clay, NRCS Hydrologic Group D, and NOAA’s normals put over ten inches of rain on the city in May and June. A well without a working outlet is a bucket, and it is full by Memorial Day.

Wichita’s code knows this. It is one of the few jurisdictions with its own window well drainage section, and its cover rule is stricter than the model code. Here is what both require, and what we build.

Covers: the Wichita rule

The model IRC lets you put a cover on an egress well as long as it releases from inside without tools. Wichita’s Section 2.4.220 goes further. Any well with a vertical depth of more than 30 inches must have either a guardrail designed to Section R312 or a protective cover rated for a 20 pounds per square foot uniformly distributed live load. That cover must be provided with an emergency egress hatch above the ladder or steps, keeping the minimum egress opening, and the force to open the hatch may not exceed 30 pounds, with no keys, no more than one operation, and no special knowledge or effort. Covers, grates, and guardrails must be built of materials approved for exterior use.

On a full-height basement, every well is deeper than 30 inches, so every well needs a rated cover or a guard. The point is fall protection for the people in the yard and an exit for the people in the basement, at the same time.

What we install:

A cover that is screwed down, padlocked, or too heavy to lift from inside the well with the window open is not a cover, it is a lid on an exit. If you have one, the broken or missing cover page explains the fix.

Drainage: the Wichita rule

Section 2.4.225 adds R310.2.3.2 to the code. Window wells “shall be designed for proper drainage by connecting to the existing foundation drainage system required by Section R405.1 or by an approved alternative method. If no existing foundation drainage system has been installed, the entire window well area shall have a minimum depth of 12 inches of washed gravel or crushed rock below the floor level.” The exception is for foundations on well-drained or sand-gravel Group I soils.

Two things follow. First, a well in Wichita that holds water was either built short of this rule or has silted since. Second, 12 inches of gravel is a floor, not a design. Gravel stores water; it does not make water disappear. In Group D clay, which NRCS defines by a very slow infiltration rate when wet, the gravel needs somewhere to send the water.

Where the water goes

Tie-in to the footing drain. Houses with a working perimeter drain, most poured foundations from the 1970s on, get a perforated leg from the gravel column down to the drain. The well then drains wherever the house drains, sump or daylight. This is the cheaper end of $300 to $1,000.

Dry well. Where the drain is silted shut or never existed, which is nearly every pre-1960 house and much of the 1950s ranch belt that makes up the largest single decade of Wichita housing, we dig a deep gravel-filled pit beside the window well, sized to hold a storm’s worth of water while it seeps slowly into the clay. A few hundred dollars more and the right answer for most block foundations.

Grade and gutters first. Before any of that: a downspout dumping within a few feet of the well, or a yard that slopes toward the house, delivers the whole roof to the well. Extending the downspout and regrading the strip along the foundation is the cheapest fix in this trade, and we check it at every measure.

Why Wichita wells flood

The numbers, from sources you can check: NOAA’s 1991 to 2020 normals for Wichita put May at 5.17 inches and June at 4.93, the two wettest months of a 34.31-inch year, delivered across 52.7 thunderstorm days annually. That rain lands on Goessel silty clay, 35 to 55 percent clay with a perched seasonal water table at 2 to 3 feet, and Rosehill silty clay, a smectitic clay weathered from shale that NRCS describes as very plastic and very sticky. Both are Group D. On the river flats it is worse: the Kansas Geological Survey calls the flat land along the Arkansas very poorly drained, which is why Wichita built a flood diversion system around the city.

A window well is a hole in that clay, against your foundation, with a window at the bottom. The full mechanism, and the fix in order of cost, is in our post on why Wichita wells flood in May.

Leaves, and the fall clean-out

Wichita’s mature neighborhoods drop a lot of leaves into open wells every October, and a well packed with wet leaves and mulch holds water against the window all winter and silts the gravel from above. A fitted cover stops it. If the well is already packed, a clean-out with a look at the base is part of any drainage visit; the well full of leaves page has the five-minute check.

What to expect

Take one photo straight down into the well and one from six feet back showing the grade and any downspout, and tell us how long the water stands after a storm. That usually tells us on the first call whether you need a cover, a rebuild, or a new well. The measure is free and the quote is flat; the well cost calculator prices the combinations. We run this work across Wichita, Valley Center, Haysville, Goddard, and the rest of Sedgwick County.