Watch as as I explore the essential tools, materials, and techniques needed to successfully rough in plumbing under a concrete slab. From marking out the layout and digging the trenches to...

Nov 29, 2007 · If you use 4" for the toilet and the main drain line run, then all you have to do is make sure the pipe is in the right place and plumb. You can buy an internal mount flange and they can pour right around the pipe.

3 days ago · Typically, a toilet is installed before your concrete slap because your drains would sit below the poured concrete. However, if you already have a concrete slab it is still possible to plumb your toilet: Your flange, or toilet flange, will connect through your floor into your drain.

In this article, we will provide a step-by-step guide on rough toilet plumbing in a concrete slab. We will cover the tools and materials required, the preparation process, and the installation process.

May 22, 2007 · Well, a toilet requires either a 3 or 4" drain pipe. If you use a 4", you can pour the concrete right up to the pipe, since you can use an internal fitting flange. If you use 3", you should put the flange on the outside (an option with 4").

Jan 11, 2024 · The first step in roughing in toilet plumbing in a concrete slab is to install the trench. The trench should be dug deep enough to accommodate the pipes and fittings, and wide enough to allow for easy access.

Feb 28, 2024 · Under slab rough-in plumbing is a critical step in construction and directly impacts the functionality and durability of your plumbing system. Proper planning and knowledge of wood framing, electrical and mechanical drawings are essential …

Jul 1, 2003 · Synopsis: With a slab-on-grade foundation, there are no floor joists in which to run plumbing pipes. Everything must be buried in the dirt prior to pouring the concrete. This article details how to locate the pipes accurately, pitch them correctly, and backfill the excavation so the slab wont crack.

Sep 3, 2020 · Before installing the toilet on your concrete slab, you will need to dig trenches and plumb a line. Step 1: Plumbing Trenches The first step is to dig the actual trenches for your drain-waste-vent system.

Oct 11, 2022 · Steps To Install A Toilet Flange In Concrete Slab. One rather simple and seemingly complex bathroom job is replacing a toilet. As long as there are no issues, even inexperienced do-it-yourself plumbers may replace an old toilet in less than an hour.

Jan 15, 2023 · I'm in the process of roughing in a bathroom under the slab, and want to make sure it's up to code (I'm in Seattle, for what it's worth). The attached diagram is how I was thinking about doing this. Note, the bathtub/shower combo (on …

May 9, 2024 · We are comfortable with most of the plumbing *above* the slab, but this is our first time actually roughing in plumbing under a slab. We are struggling with how we should lay it out. Mostly my concerns are around venting! The toilet is upstream of the shower, bathtub, and sinks in both bathrooms.

Oct 28, 2021 · How deep you place the plumbing underneath the slab depends on the city, state, and federal guidelines. Warm areas have their pipes laid anywhere between 12-24 inches (30.48-60.96 cm) below the slab. In states like Alaska and Minnesota, pipes are buried 80-100 inches (203.2-254 cm) deep.

Oct 20, 2024 · The key steps to rough in plumbing for a slab include marking the locations for the plumbing fixtures, digging trenches for the pipes, laying the pipes in the trenches, and ensuring that the pipes are properly supported and sloped for drainage.

Nov 29, 2023 · When installing a toilet in a basement, you have three different options. First, you can install a standard toilet – but that will involve breaking up the basement slab concrete so that you can run the drain piping underground to your main sewer drain.

Feb 3, 2025 · The first image shows the bathroom group: toilet, shower and vanity (in the first image), with the toilet and shower wet vented thru the vanity. The second image shows the drain for a kitchen sink drained horizontally thru the (non loadbearing) wall, with its own dry vent.

Feb 7, 2023 · I'm in the process of roughing in a bathroom under the slab, and want to make sure it's up to code (I'm in Seattle, for what it's worth). The attached diagram is how I was planning on doing this. Note, the bathtub/shower combo (on left) drain would connect from about 4 feet away.

Learn how to install a toilet on a concrete slab with our step-by-step guide. Includes detailed instructions, diagrams, and photos. Install a Toilet on a Concrete Slab 1. Prepare the site. Remove the old toilet and clean the area. 2. Install the toilet flange. Make sure the flange is level and secure. 3. Attach the toilet to the flange.

When plumbing is installed below a slab, the plumbing should be placed a minimum of 12 inches deep or as far below the slab as possible. However, this minimum should be adhered to for sanitary sewer and storm drains and ideally, a drain should be …

Apr 26, 2024 · In this comprehensive guide, we will navigate through how to repair plumbing under slab, from identifying the issue to executing the necessary repairs without compromising the structural integrity of the building.