Damage at a seam from a past repair
Old subfloor repairs are often the weak spot. We rebuild them so the edges are fully backed.
Serving Naperville & nearby Lisle, Warrenville
Kitchen Subfloor Repair in Naperville, IL
Soft, rotted or squeaky kitchen subfloors opened up, rebuilt and made solid in Naperville homes.
- Technicians covering Naperville ZIP 60540, 60563, 60564, 60565
- Diagnosis first, then a written price for the repair
- Honest advice when replacing makes more sense
Subfloor problems we fix in Naperville kitchens
A soft spot in front of the dishwasher or sink usually means water has been reaching the wood under the floor for a while. In Naperville we find and stop the leak, cut out the damaged subfloor, check the joists and install new panels that are glued and screwed down.
Squeaks and creaks underfoot
Squeaks happen when the subfloor moves against nails or joists. We fasten it down with screws, add construction adhesive or install blocking where it is loose.
Leak from the refrigerator water line
A weeping ice-maker connection behind the fridge can soak the floor for months. We replace the line or valve and the damaged subfloor under it.
Soft spot in front of the dishwasher
That spongy patch near the dishwasher is one of the most common subfloor repairs we do. The leak gets fixed first, then the damaged panel comes out.
Musty smell or stains in the basement ceiling
Signs from below often show up first. We trace them to the source and repair what is wet.
Floor too thin for tile
Tile needs a stiffer base than vinyl. We add a layer of plywood or reinforce the framing before a tile floor goes in.
Rot found during a remodel
Discoloration and soft wood under the old flooring are dealt with right away. Building over rot means problems under the new floor.
Bouncy or sagging floor
A floor that flexes when someone walks through may have undersized, damaged or notched joists. We check the framing and may sister new lumber alongside.
What we check and fix
- Finding and stopping the leakWe look for the source — dishwasher, sink, fridge line or an outside wall — and make sure it is fixed first.
- Removing the finish floorTile, vinyl or wood is taken up over the damaged area, with the cut planned so the floor can be patched cleanly.
- Moisture testingWe measure the wood moisture to set the repair boundary and confirm it is dry.
- Cutting out damaged subfloorWe remove the damaged area in a clean rectangle with every edge supported.
- Joist inspection and reinforcementWet, cracked or undersized joists are sistered or blocked; structural work goes through a permit where required.
- New subfloor panelsTongue-and-groove plywood or OSB of matching thickness, glued to the joists and screwed down.
- Ready for flooringSubfloor solid and clean; we can lay the new floor or coordinate with your flooring installer.
Parts we replace
Tongue-and-groove plywoodThe usual choice for kitchen subfloors: stiff, holds screws well and tolerates brief wetting better than OSB.
Sister joists and blockingNew lumber fastened alongside damaged or weak joists, plus blocking that supports panel edges.
OSB panelsCommon in newer construction and fine when kept dry, but its edges swell if it gets wet.
Leveling compound and patchFlattening products for small dips and seams.
Construction adhesive and subfloor screwsFastening that grips the joists instead of working loose like nails.
What the work looks like in Naperville homes
Problem
Fixed
DetailA Naperville 1980s two-story: before and after
A 1980s two-story near Highlands, a typical kitchen for Naperville. What we started with: oak parquet and white appliances. What bothered the owners most: a bouncy floor near the dishwasher. After: new plywood subfloor glued and screwed down in front of the dishwasher, ready for flooring. On site this meant moisture testing, cutting out damaged subfloor, plus ready for flooring.
Before
AfterBefore and after: a 1980s two-story in Warrenville
This one is a 1980s two-story near Summerlakes. The kitchen as it was: 12-inch beige ceramic tile and black appliances. The main complaint was a floor that gave underfoot by the sink. Finished kitchen: new plywood subfloor glued and screwed down in front of the dishwasher, ready for flooring. The job covered finding and stopping the leak, joist inspection and reinforcement, plus ready for flooring.
Kitchen Subfloor Repair in Warrenville →
Before
AfterA Woodridge 1980s two-story: before and after
A 1980s two-story in Woodridge, a typical kitchen for Woodridge. What we started with: beige sheet vinyl and almond appliances. The reason for the call: a soft spot that had opened under the vinyl. Finished kitchen: new plywood subfloor glued and screwed down in front of the dishwasher, ready for flooring. On site this meant finding and stopping the leak, removing the finish floor, plus moisture testing.
Kitchen Subfloor Repair in Woodridge →
Before
AfterHardwood Floor Repair & Refinishing in a 1990s two-story colonial, Naperville
The oak floor sanded and refinished with a satin clear finish, grain visible and the water marks gone.
Hardwood Floor Repair & Refinishing in Naperville →
Before
AfterBefore and after: a 1990s two-story colonial in Naperville
Finished: cabinets in light butter yellow with satin brass pulls, charcoal concrete-look quartz counters, a terracotta-look square tile backsplash, gray wood-look porcelain plank flooring and two glass pendants and recessed lights.
Kitchen Remodeling in Naperville →How the repair goes
- Inspect the floorA visit to find the soft area, its cause and how far the damage goes.
- Stop the waterWe repair the source of moisture first.
- Rebuild the subfloorDamaged wood out, framing reinforced, new panels glued and screwed; small repairs often take a day or two.
- Finish the floorNew flooring goes down over the repair, or we leave it ready for your installer.
Kitchen Subfloor Repair questions from Naperville homeowners
Do I need a permit for subfloor repair?
Replacing subfloor panels usually doesn't. Structural work such as sistering or replacing joists often does, and we pull the permit when it's required.
Plywood or OSB for a kitchen subfloor?
In a room with a dishwasher and sink, plywood is the safer choice.
Can you replace just a section of subfloor?
We do it often. The patch is sized to the damage and fastened to the framing.
What affects the cost of subfloor repair?
How much area is damaged, whether joists need work, removing and replacing the finish floor and moving cabinets or appliances. We give a written, itemized estimate after the visit.
Can you fix squeaks without tearing up the floor?
From an unfinished basement, yes in many cases. Otherwise the best time is when the flooring is up.
Naperville building permit for kitchen subfloor repair: where do I apply?
Permits go through Transportation, Engineering and Development (TED) Business Group, Building Permits, phone (630) 420-6100, Option 2. When your scope needs one, we prepare the application and schedule the inspections.
Do I need a permit for kitchen subfloor repair in Naperville?
It depends on the scope. Naperville's rule in short: Remodeling such as kitchens requires a permit, as do electrical work (minor repairs and low-voltage excepted), plumbing pipe/fixture installation or rearrangement, and structural changes. We handle the permit when one is needed with Transportation, Engineering and Development (TED) Business Group, Building Permits.
Do you work in my part of Naperville?
Yes. Our crews work across Naperville, including Downtown Naperville, Highlands, Tamarack — ZIP 60540, 60563, 60564, 60565 — and nearby Lisle, Warrenville, Bolingbrook.
Working in Naperville
- A lot of Naperville kitchens date from the 1990s. We know these layouts well and what is worth keeping.
- Most Naperville homes are single-family. We protect floors and driveways and leave the site clean every day.
- Live in the Naperville Historic District? Interior kitchen work is usually not reviewed. We check before anything touches the exterior.
Downtown NapervilleHighlandsTamarack
ZIP 60540ZIP 60563ZIP 60564ZIP 60565
Kitchen Subfloor Repair nearby
Other kitchen services in Naperville
Hardwood Floor Repair & RefinishingSanding, refinishing and board repairs for kitchen hardwood floors.
Kitchen RemodelingFull kitchen remodels, from layout to last cabinet pull.
Kitchen Cabinet PaintingFactory-smooth painted cabinets without replacing them.
Cabinet RefacingNew doors and fronts on your existing cabinet boxes.
Countertop Fabrication & InstallationQuartz, granite and butcher block, templated and installed.