MaintenanceUpdated July 14, 2026
Bathroom remodeling in Arlington Heights usually means more than picking tile and fixtures. For homes built in the 1950s-1970s, the plumbing behind those walls can bring headaches if it's ignored at the planning stage. Plenty of local homes still run on older galvanized pipes or cast iron drains, both of which are showing their age. Smart remodels start with a solid plumbing plan that addresses water supply, drainage, and venting before any tile comes up or new fixtures go in.
Why Arlington Heights Bathrooms Need Careful Plumbing Prep
Most homes in our area have aged in place, with additions, patch jobs, and updates layered onto original plumbing. Older galvanized supply lines are prone to corrosion inside, which restricts water flow and impacts pressure. Cast iron or even clay drains can become rough, causing frequent clogs or slow drains. Remodeling offers a key chance to deal with these issues before new surfaces cover them up. If you skip this, you risk leaks or costly repairs down the line.
Check the Water Supply Lines
When we open up walls during remodeling, the condition of hot and cold water lines is one of our first priorities. Galvanized steel was common in older Arlington Heights homes, but it's often corroded, leading to low pressure at the shower or sink. Copper and PEX are today's standards because they hold up better, especially against the moderately hard water supplied by Lake Michigan. Repiping now can save you trouble later.
Beyond materials, make sure supply lines are the right size for new fixtures, especially if you're upgrading to a rainfall shower or deep soaking tub. We also recommend checking the pressure reducing valve (PRV) if present, and adding isolation valves for every fixture so future repairs don't require a full shutdown.
Plan Drainage for Reliable Flow
Draining is another spot that gets overlooked until there's a backup. Cast iron and galvanized drains are notorious for building up scale, which reduces flow and causes slow drains. If your home's lines are original, replacing them with PVC or ABS during a remodel is wise. Proper slope and venting are crucial for avoiding standing water and sewer smells.
P-traps must be installed for every sink, tub, or shower to prevent sewer gases from coming back up. Double check that the drain diameter matches the fixture requirements, showers and tubs usually need a 2-inch drain, while sinks use 1.5-inch. For homeowners who have had issues with basement flooding or sewer backups, it's a good idea to assess the entire line back to the stack or even coordinate sewer line services if you're seeing frequent slowdowns.
Don't Forget Venting and Traps
Proper venting makes a bathroom work smoothly. Every fixture needs access to a vent stack to allow air in as water is drawn out. Without proper venting, you'll get gurgling drains or even slow drainage as air can't replace the water leaving the pipes. In older Arlington Heights homes, venting sometimes falls short by today's codes, especially after past remodels. A good remodel plan checks all vent paths and upgrades as needed to prevent future problems.
Common Plumbing Surprises During Bathroom Remodels
- Finding hidden galvanized pipes with internal buildup
- Cast iron drains with cracks or pinhole leaks
- Improperly sloped pipes causing slow drainage
- Insufficient venting hidden behind walls
- Old shutoff valves that no longer close fully
We see plenty of remodels where homeowners only discover these issues after demolition begins. Taking the time to inspect and plan up front saves time and stress later.
Upgrades Worth Considering
Remodeling is also the perfect time to improve water efficiency or add comfort features. Pressure-balanced mixing valves help keep showers safe from temperature spikes. If you're thinking about a new water heater or relocating fixtures, tie in water heater services at the same time. For a new toilet or hands-free faucet, use a licensed pro for fixture installation so everything seals and performs properly.
If you've had trouble with drain backups or standing water in the basement, consider integrating sump pump upgrades into the project. Our area's flat terrain and moderate water table can make this a smart investment for some homes.
Avoiding Leaks and Water Damage
Water leaks during or after a remodel are a headache nobody wants. Double check every joint, trap, and supply line connection for leaks before walls close up. If you have a history of water stains, dampness, or mystery moisture, add leak detection and repair to your checklist before finishing the job. Proper waterproofing and plumbing upgrades go a long way toward preventing future headaches, especially in our climate where freeze-thaw cycles can stress pipes in exterior walls.
Planning a bathroom remodel in Arlington Heights? Our crew can help you sidestep common plumbing pitfalls, spot weak points in your system, and deliver a bathroom that works as good as it looks. Call 224-347-7053 for practical advice or to schedule a walk-through before you demo that first tile.