Ponding Water Roof Repair in Kenosha, WI

The Finding in the Low Spot

Water that stays on a roof more than a day or two after rain is worth logging. Short-lived puddles near drains are normal. A pond that lingers, sits in the same place after every storm or leaves a ring and a stain is a sign that the roof is not shedding water as designed.

The causes fall into a few groups. A drain set above the low point of the deck. A deck that has sagged between supports. Insulation that has compressed under a heavy unit. A clogged drain or scupper. Each cause produces a slightly different shape, and the shape is part of the record.

We probe the pond edges with a straightedge and a tape, photograph the water against a scale and mark the pond on the plan. A second visit after the next rain confirms whether it is the same pond.

Photographs are taken at low sun angle when possible. Low light raises the shadow of a ring, and the ring shows the pond's true outline better than a midday shot does.

How the Ponding Record Is Kept

The ponding record is a table with one row per pond. Columns show location, depth, time after rain, nearest drain, drain condition and photograph number. Over a few visits, the table shows which ponds shrink, which stay and which grow.

Drains are flushed during the visit so the record shows whether water leaves. A drain and scupper check goes in the same table, with the flow observed and any debris removed.

When ponding sits over suspect insulation, a moisture survey and a core cut follow. Standing water can drive moisture through small membrane defects, and the survey shows whether it has.

Weather on the day goes in the table too, because a pond measured two hours after a storm means something different from one measured two days after.

Precipitation and Freeze-Thaw in Kenosha

Precipitation in Kenosha runs about 37.6 inches a year, and an average February adds 9.8 inches of snow. Snow that melts on a warm afternoon and refreezes overnight leaves ice at drains and scuppers, and a blocked drain turns a thin film of meltwater into a pond.

Ice that forms in a low spot adds weight and presses on the membrane. In spring the thaw shows which ponds persist. We time a visit for that window, and a second for late fall, so the record covers both ends of the winter. Long runs of low-slope roof, the kind a distribution building in Pleasant Prairie might carry, let small slope errors add up to visible ponds.

Up the lake, Racine gets about 41 inches of snow in a typical year, a little more than Kenosha, so ponds that form after a thaw there tell a similar story. An owner with roofs in both cities can compare their tables line for line.

Repair Options for a Persistent Pond

The repair follows the cause. If a drain is clogged or set high, the fix is drain work, and a new drain body or a sump may be needed. If the deck has sagged or the insulation has compressed, tapered insulation can add slope. If the pond is shallow and the membrane is sound, a monitoring plan may be all that is needed.

Tapered insulation is installed with a new membrane, and the scope for insulation and cover board shows thickness and slope at each drain. Where only a small area is low, a cricket or a local tapered build-up can redirect water without a full replacement.

A repair that ignores the cause tends to repeat. The log shows the previous patch beside the pond, which is often the quickest evidence that patching alone is not working.

Where the pond sits at a roof edge, the scope also checks the scupper and its overflow height. A scupper set too high turns an edge pond into a permanent one, and lowering it is often cheaper than any other fix.

What the Ponding Record Means for the Budget

Ponding affects the budget in two ways. It shortens membrane life, and it signals a drainage deficiency that may affect other sections. The rating reflects both. A shallow pond on a sound roof stays on the maintenance calendar. A deep pond over wet insulation goes on the capital request.

Where a building has several roofs, the ponding tables line up in one view, and the worst section ranks first. A seam failure beside a pond gets flagged together with it.

A cost range for drainage work carries its assumptions in plain words: how many drains are added, how much tapered insulation goes in, and whether the membrane is replaced at the same time. If a core cut changes an assumption, the range is reissued and the earlier version is kept in the file.

Seasonal Checks and Drain Care

In fall, drains are cleared of leaves and debris ahead of the first freeze. Spring is when ponds that formed under snow and ice get recorded. After heavy rain, a short visit confirms the drains are running.

For roofs with snow-melt drains, the winter entry includes ice at the drain bowl. A snow and ice damage record shares the same table, so ponding and ice damage read together.

Summer entries matter as well. Heat softens some membranes, and a pond that sits on soft membrane leaves an impression the winter then deepens. A late-summer check records depth before the fall rains begin.

Close-Out Package After Drainage Work

When drainage work finishes, the file closes with before and after photographs, the revised plan with new drain locations and slopes, and product sheets. A re-check after the next significant rain confirms that the pond is gone, and the result goes in the table.

The next inspection starts from the revised plan, with the new drain locations circled and the old ponds marked as resolved or watched.