InstallationUpdated June 8, 2026
Upgrading your kitchen is a big decision, and the rough-in plumbing stage sets the foundation for the entire project. In Franklin Park, most homes are single-family builds from the mid-20th century, with a good number of bungalows and Cape Cods. Many of those older kitchens were never set up for dishwashers, garbage disposals, or the multiple sinks homeowners expect now. That makes getting the rough-in plumbing right during a remodel even more important.
Why Kitchen Rough-In Matters in Local Homes
The rough-in is where we run new water and drain lines through walls and floors, install venting, and prep stub-outs for fixtures before drywall and cabinets go in. In Franklin Park, we often run into galvanized or cast iron pipes behind the walls. These can be corroded or too narrow for modern kitchens, especially if you plan to add features like a pot filler, island sink, or even just a larger faucet. A solid rough-in means fewer headaches later, with everything draining and supplying water as it should.
Common Plumbing Issues With Franklin Park Kitchens
The original plumbing in many area homes was designed for a basic sink and range. If your house has galvanized supply lines, you might have noticed low pressure or rusty water. Cast iron or even old clay-tile drain lines can become brittle or blocked over decades. Remodeling is the best time to replace these with copper, PEX, or PVC, and adjust the layout for new appliances. Our team often needs to assess the main shutoff, inspect pipes for corrosion, and look for any signs of leaks, especially in basements where clay-rich soils and high water tables sometimes cause seepage or standing water near old plumbing.
- Galvanized pipes = prone to corrosion and flow restriction
- Old cast iron drains may be cracked or clogged
- Outdated shutoff valves often need replacing
- Adding a dishwasher or disposal can overload old branch drains
- Poor venting causes slow drains and gurgling noises
Steps in a Quality Kitchen Plumbing Rough-In
Every project starts with a detailed plan and a review of the existing system. We always check water supply size and drain slopes. For homes in the Chicago metropolitan area, local code requires separate shutoffs for each fixture, air gaps for dishwashers, and adequate venting, no shortcuts. During rough-in, our crew:
- Shuts off the main supply and drains water lines
- Removes old pipe back to good material, often at the basement or crawlspace
- Installs new hot and cold supply lines, usually PEX or copper
- Fits proper waste and vent lines, sizing for new sinks, dishwashers, or islands
- Seals and pressure-tests all new lines before the walls go up
Special care is needed in homes with slab foundations or finished basements. We may need to reroute drains or raise vent stacks to keep everything up to code, especially since freeze-thaw cycles in our area can stress old joints and increase the risk of leaks.
Key Fixtures and Features to Plan For
Modern kitchens usually mean more appliances and fixtures. Each one adds its own load on the system. Installing an instant hot water tap or adding a second sink often means upsizing supply lines or traps. Garbage disposals require separate electrical and must tie into the existing drain without causing backups. Water filtration systems or under-sink heaters need dedicated shutoffs. We recommend reviewing faucet and fixture installation options early, so your rough-in matches your appliance choices.
If your home uses a sump pump (common around Franklin Park because of high water tables and clay soil), it's smart to make sure any new kitchen lines won't interfere with your basement drainage. See our sump pump services page for more on keeping water out of your basement.
Avoiding Common Rough-In Headaches
Plenty can go wrong if a rough-in isn't done by someone who knows the area. Forgotten venting, poor drain slope, or missed shutoffs can lead to expensive repairs. We look for signs like low water pressure, slow drains, and past leaks that might signal deeper issues. Homeowners looking to expand or move a kitchen often need pipe repair and repiping, especially with older galvanized or cast iron pipes beneath the floor or in exterior walls.
If you're noticing water stains, musty odors, or any moisture around your kitchen or basement, our leak detection and repair service can track down the source before the remodel starts. For major layout changes, some jobs call for new water main or drain tie-ins, see our water line services for large-scale upgrades.
What to Expect During Inspections and Testing
Franklin Park follows Cook County and Illinois plumbing codes, so all rough-in work gets inspected by a local official. We schedule the inspection after all new pipes and drains are sealed and pressure-tested. It's a pass-fail situation, if even one thing leaks or the venting isn't right, the next phase can't begin. Our plumbers are used to these requirements and make sure everything meets or exceeds local codes before calling for inspection. Pressure and leak testing on all new joints gives you confidence that once the walls are closed, you won't be dealing with hidden problems down the road.
Planning a kitchen remodel in Franklin Park? Our team handles plumbing rough-ins with decades of local experience. Call us at 224-268-1723 and we'll make sure your new kitchen starts on a solid footing.