New Drain Lines That Work Right From Day One

Professional drain installation for remodels and additions in Marble Falls

When you add a bathroom, remodel a kitchen, or finish a basement, you need new drain lines that connect properly to your existing plumbing and meet local code requirements. The pipes must be sized correctly, routed efficiently, and installed with the right slope to prevent slow drainage or future backups. In Marble Falls, new construction and remodeling projects require careful planning to ensure drain lines work with the layout of your home and tie into the main sewer line without issues.


Marble Falls Plumbing LLC installs new drain lines for kitchens, bathrooms, laundry rooms, and other plumbing fixtures as part of remodeling or addition projects. The work includes code-compliant sizing, proper slope, and secure connections to prevent leaks or clogs down the line. Installation is coordinated with other plumbing work such as supply lines, vents, and fixture placement, and the system is tested before walls are closed up. Every installation is built for long-term performance.


If you are planning a remodel or addition in Marble Falls and need new drain lines installed, contact Marble Falls Plumbing LLC to schedule a consultation.

Person assembling plumbing pipes under a sink; hands near a gray pipe.
Hands in work gloves use a wrench to adjust plumbing pipes under a sink.

How New Drain Lines Are Installed Correctly

The plumber reviews the layout of your project and determines the best route for the drain lines, taking into account fixture locations, existing plumbing, and structural obstacles. In Marble Falls, installations often involve running new lines through walls, under slabs, or in crawl spaces. The pipes are cut, fitted, and secured with the correct slope to ensure water flows freely toward the main sewer line.


Once the installation is complete, your new fixtures drain quickly and quietly without gurgling or backups. The system is leak-free and meets local plumbing codes, so it passes inspection without delays. You will not have to worry about drainage issues caused by improper slope or undersized pipes.


This service covers the drain lines themselves and their connection to the main system, but it does not include supply line installation or fixture mounting unless coordinated as part of a larger project. The plumber will explain what is included and how the drain work fits into your overall timeline.<

Plumber in blue overalls kneeling, holding white pipes, surrounded by tools near a toilet.

What you should know before installing new drains

Homeowners usually want to know how drain lines are routed, whether the work will delay their remodel, and what size pipes are required. These are the most common questions about drain installation.


  • What size drain pipe is needed for a new bathroom? Toilets require a three-inch drain line, while sinks and showers typically use one-and-a-half-inch or two-inch lines. The exact size depends on the fixture and local code requirements in Marble Falls.
  • How is the new drain line connected to the existing plumbing? The plumber ties the new line into the main drain or sewer line using a fitting that allows water to flow in the correct direction. The connection is sealed and tested to ensure it does not leak or cause backups.
  • Why is slope important for drain lines? Drain lines rely on gravity to move water, so they must be installed at the correct angle. Too little slope causes water to sit in the pipe, while too much can leave solids behind and lead to clogs.
  • How long does drain installation take? Most installations are completed in one to two days, depending on the number of fixtures and the complexity of the routing. Under-slab installations may take longer if concrete cutting is required.
  • Can drain installation be done during a remodel without delaying other work? Yes, drain installation is typically coordinated with framing and other rough-in work. The plumber will work with your contractor to ensure the lines are installed at the right stage of the project so there are no delays.


New drain lines are only as good as the planning and installation that go into them. Marble Falls Plumbing LLC ensures your drains are sized correctly, routed efficiently, and installed to meet code so they work reliably for years. Get in touch to schedule installation and keep your remodel or addition on track.