Why an EIFS recoat in Joliet starts with a moisture inspection

Before recoating synthetic stucco (EIFS) in Joliet, the wall needs a moisture check: surface meter readings on every elevation at minimum, and probe readings at the window corners, roof intersections and penetrations on any wall that shows a stain, a crack cluster or a soft spot. Joliet Stucco & EIFS does the surface readings free on the quote walk and charges $450 to $850 for the probe tested inspection with a written report. A dry wall gets the recoat number. A wet wall gets a repair scope first, because paint cannot dry out sheathing.

What a recoat can and cannot do

An acrylic or elastomeric recoat sits on top of the finish coat. It restores color, seals hairline cracks, stops the chalking that leaves powder on your hand, and buys the finish another decade or more of weather. That is all it does. Behind the finish is a base coat with mesh, then foam board, then the sheathing and framing of the house. Water that got past a failed window sealant or a missing kickout flashing is sitting in that foam and sheathing layer, and a recoat has no way to reach it.

Worse, a recoat over a wet wall makes the problem harder to see. The streaks disappear under new color. The soft spot firms up for a season as the new coat bridges it. Meanwhile the oriented strand board behind the foam keeps absorbing water, and the next person to find it is the buyer’s inspector three years later, when the repair has grown from one window section to a whole elevation. We put the cost of that outcome on the pricing page for a reason: localized remediation runs $4,000 to $12,000, and a full remediation or re-clad runs $20,000 to $45,000.

Why Joliet houses need this more than most

Most of the synthetic stucco in Will County went up between the late 1980s and about 2000, on two-story houses in Joliet, Plainfield, Naperville and Frankfort. Nearly all of it is the face sealed kind, a barrier system with no drainage plane behind the foam. Oak Ridge National Laboratory’s field study for the Department of Energy found that EIFS with a drainage layer handled moisture as well as brick or fiber cement, while face sealed EIFS depends entirely on its sealant joints and flashings staying intact. Those joints were installed twenty five to nearly forty years ago. Many have never been replaced.

Add the climate. Northern Illinois walls take freeze and thaw cycles through much of the winter, and wind driven rain from the west and southwest most of the year. A sealant joint that opened up a sixteenth of an inch at a window corner in 2019 has had seven seasons of water running into the foam behind it. From the sidewalk the wall looks tired and chalky, which is exactly when homeowners call for a recoat.

What the inspection actually covers

1. 1

   A walk of every elevation with a surface moisture meter and a chalk rag. This is part of the free quote visit on every recoat we price.

2. 2

   A look at every window and door perimeter, every hose bib, light fixture and vent, and every place the roof meets a wall. We are checking sealant condition and whether kickout flashing exists where a roof edge dies into stucco.

3. 3

   Probe readings on any wall that shows a warning sign: brown streaks under a window, a hollow sound, a blister, a cluster of cracks, or an elevated surface reading. The probe goes through the finish and foam to the sheathing and gives a percentage.

4. 4

   Probe readings below every window corner and roof intersection on a full inspection, even where no sign is visible. That is the paid inspection, and it is what a buyer, seller or lender is asking for.

5. 5

   A written report with a wall map, each reading, a photo at each location, and a repair scope priced from the published table for anything that reads wet.

Reading the numbers

A probe reading is a moisture percentage in the sheathing. Under about 19 percent is dry, and that wall can be recoated on schedule. Between 19 and 30 percent is elevated. That wall is not condemned, but it gets a second reading a few weeks later, and we look hard at the sealant and flashing above the probe location, because something is letting water in. Above 30 percent is wet. Sheathing at that level is at risk of rot, and the section gets opened, dried and rebuilt before any finish goes on.

Two readings matter more than the rest. The first is below the window corners, both sides, on the elevation that faces the weather. The second is below any roof edge that ends in the middle of a wall, which on a 1990s Chicagoland two-story is usually where a garage roof or porch roof meets the second floor. If those read dry, the odds are good that the whole house does.

How a wet reading changes the quote

It splits it. The dry elevations get the recoat number from the table, $3 to $5.50 per square foot of wall, with hairline cracks included and any patching listed line by line. The wet section gets its own scope: open the finish and foam, remove damaged sheathing, correct the flashing or sealant that caused it, rebuild the layers, and then finish to match. On one window or one wall section that runs $4,000 to $12,000, with the top of the range reserved for jobs where the framing behind the sheathing is also soft.

The order matters. Remediation first, then the recoat over the whole elevation so the repaired section disappears into a uniform wall. Doing it the other way around means paying twice for the finish on that section. We photograph everything we find behind the wall before we touch it, and the photos go in your file even if you do not go ahead.

Permits, season and what to ask any contractor

Illinois issues no state license for stucco trades. The City of Joliet requires contractor registration, and a permit for work that changes cladding material or opens structure. A like for like recoat on a house does not normally need one; a remediation that replaces sheathing usually does, and we confirm the category with the Building and Inspectional Services Division before quoting anything that opens a wall. The city’s residential permit page is the reference.

Finish coats need the wall to stay above roughly 40°F for a day after application, which gives Joliet a mid April to late October window. Inspections run year round, and a report in March puts you first in line for a spring recoat slot. Whoever you hire, ask three questions: did you meter every elevation, did you probe below the window corners, and will I get the readings in writing. A contractor who recoats without answering all three is charging you to hide the wall.