You can hire someone to saw a trench in the concrete floor from where the drain will be to where the drain pipe will exit the building. Workers will need a specialized listening device to pinpoint the exact location before cutting into the concrete. The plumber will have to break up the concrete slab to move the pipes. This usually doesn't show up on plans or fixture layouts. Once you have the right drill and drill bit, mark the spot on the concrete you want to drill through. Once the trenches are dug, you can add the sewer pipes and stub-outs -- pipes that sit above the slab floor that eventually connect the sink, toilet, bathtub or shower, and any other drains to the system. Have finishers work around electrical conduits and plumbing pipes with hand tools to keep the surface level. Photo below: Garage into kitchen, water feeds and waste to right. The concrete will be much lighter than the surrounding concrete floor. He will dig trenches as needed to run the sewer pipes and water pipes, and should smooth the dirt or sand back when finished. Water coming through floor or wall. Start digging out channels in your concrete floor and bury the pipes in there. Backfill the trench with soil and screed 3 inches of concrete over it. Next, use a marker to mark the concrete right where the four holes in the flange are. Guide the vent pipe up through the hole and into the attic or room above and slip its lower end into the fitting at the floor. Make sure you have a drain pipe set up for the condensate drain of your air conditioning system! How to Run Plumbing Under Concrete. You must decide or agree on the best location for the main sewer drain pipe to come out of the house before the plumber can start. This page gives practical advice on … Before the concrete trucks come, the contractor fills in the area over the network of plumbing pipes and drain lines with compacted sand. Once the time comes to install the rough plumbing, you will have to remove the existing concrete that is in the bath of where the plumbing pipes need to be installed. Learn how to cut into a basement floor, the foundation of the house, in order to do some plumbing for a bathtub. Then you are required to dispose of it. If anything doesn't look right, mark it with your flagging tape and talk with the crew as soon as possible. The house has a concrete slab foundation so I am not sure how to tie into the existing plumbing. (This has more breaking required but might be tidier overall?). The floor drain will be connected to your storm sewer. It's supposed to keep the tile from breaking if the new concrete expands and shifts at a different rate than the old. This page covers checking the sewer and water pipes in a slab. How would you like to have the cold water plumbing line for the refrigerator ice maker stubbed up in your foyer? Anchor the drainpipe with straps. The pipes must be at the sink location shown on the floor plan. 4. Check this out! You're on your way to insuring a perfect layout, by carefully checking the installation against the plans. Think twice before moving plumbing fixtures if your house is on a slab and get quotes first. Once the leak is located, jackhammering a hole in the floor is required to access the pipe. When the weather is bad we get water seeping In our bathroom against the gable end wall. The nearest pipe in the photo is a vent pipe, the pipe to the left is the washing machine drain, and the pipe beyond in the trench is a sink drain. Have your plumber ready to come right away after the fill is spread and compacted under the slab. Notice the deeper trenches that form "grade beams," or thickened slab areas, beneath the stud walls. Usually, that means cutting into the concrete to install pipes, drains and storage tanks. Also, you’ll need at least a 1-1/2-in. Create a modern, warm living space into your home with these 10 DIY Home Project Ideas For Your Cement Floors. When a house is to have a poured-concrete-slab first floor, all the pipes and fittings below the floor level must be put in place before the floor is poured. If you want to install a shower over a concrete floor, a fiberglass shower stall will work just fine. Check out the story of our friend Cheetah, who had a major pipe installed in the wrong place on his new house. A. Foul odors can result from mold growth or a breach in the sewer line and landscape damage may occur as water … The first step of the process is to choose the outlet direction you require and carefully turn the drain to face the outlet position required. Pour concrete into the trench to seal it and let is stand for a few hours. Patch the Floor. Solving concrete slab problems. If water is a problem you will find the amount of dust amazing from a dry cut..but not impossible to handle.You need the following AFTER you drape and tape: 1) A ventilating blower like the type used when people work down a manhole. Hey, but what's 3 or 4 inches, unless it jumps over into the next room? This can be a very expensive procedure and may even be prohibitively expensive. Install the cover and trap to finish off your new system. Susan and I wish you the very best with building the home of your dreams! So why not get creative and make your boring concrete floor shine? It may be simpler and less expensive to leave them where they are. You may have a problem with the pipes in your concrete slab foundation if you’re walking around your home and find your socks suddenly wet from some mysterious moisture. The pipes that are installed under a concrete slab are one of the most critical parts of your home project, and you must check every pipe! Copyright 2008-2017 Build-My-Own-Home.com Even though the installer believes he did it all correctly, check it anyway! A soaked floor can be a breeding ground for mold – and there are many different types. 1 - Isolate the leaky area. Using the dimensions on the floor plan, measure from the outside of the foundation walls or slab! The farther away the plumbing fixtures are from the collection tank, the higher the floor of the shower, commode or sink must be to allow for adequate drainage. Concrete doesn’t have to be cold and boring; and hiring someone to install flooring can be so much costly. Once you get all of the concrete out of the channel you will be able to dig the dirt out around the pipe. The first option is to cut the concrete with a handheld concrete saw. Everyone can make mistakes, and mistakes in the locations of these pipes under a concrete slab can be disastrous. All Rights Reserved. We can't tell you enough how important this is for you to do. This guide reviews how to drill into concrete safely and effectively. It takes a couple of days to put down, but not a month of curing. Make sure the drainpipe extends at least an inch above the concrete. Views of the same drain and vent lines after the concrete slab was poured, and after the wood wall framing was installed (photos below). How to Cut Through a Concrete Foundation - Bathroom Plumbing The top openings should be packed with something to prevent concrete or debris from falling into the line. In this video, you'll see the cutting, using a sledge hammer to break out the concrete, the gravel underneath and the plans for the plumbing. Have your plumber ready to come right away after the fill is spread and compacted under the slab. This combination persisted well into the 1930s, with solid concrete… It can also encourage mould and mildew growth inside walls, cause swelling of plasterboard, cabinets or render, and create cracks in floor tiles. Now, use a short wood piece measuring 2” X4” along with a rubber mallet to tap in the … Pro tip: Pack the soil firmly so it won't settle later. The photo below shows the same area during the pouring of the concrete, viewed from a different angle. We had a tough time figuring out how to solve the problem. The air conditioner condensate water must drain into the house sewer if possible, so figure this out too with the plumber before he starts. 28. Often, converting a basement or garage into usable living space involves adding plumbing. washing machine to … Gaining Access. If you want to move a toilet even a few inches, the cost can be high. I discovered it just in time. Regarding the floor after the trenching, there's goop my artisan tile setter used, called anti-fracture membrane. Don the safety glasses and drill 1 1/2-inch holes into each of the marks that you made. **Make sure and wear protective eye and ear protection along with a pair of gloves. Adjust the … Now, slowly level the bathtub on the floor and make sure all the corners are evenly placed. Plumbing a bathroom addition is, arguably, the biggest challenge of this type of home improvement. If you want to make everything a consistent color, you can paint the floor or add interlocking flooring. Traditional ground floors have consisted of little more than a few flagstones or bricks placed directly over the soil. Whether you're building in the basement, beneath a first-floor stairway or in an existing space within the house, finding room for pipes can involve opening walls or cutting into concrete - traditional approaches that can be inconvenient and costly. If you are in an older home, where they are shared, you could do it, but you will have to excavate the floor and make the connection sub-slab with rigid connections and not flexible hose or pipe. Cut a smaller opening in the ceiling for the vent pipe. If there isn’t, carefully chisel out the concrete around the pipe. Also considered is chasing the plumbing directly from the kitchen sink under the concrete floor and into the garage (blue lines). Installing a floor drain into an existing concrete slab will require some sawing of the concrete. Cut a smaller opening in the ceiling for the vent pipe. Dec 14, 2016 - Checking the plumbing layout in a concrete slab before it is poured is one of the most important things the home builder will do. Otherwise you have to break through the concrete to run a new line for a shower stall installation. Anchor the drainpipe with straps. Trowel the concrete with the blades at their flattest setting. After the concrete has had time to set up, remove the can from the new floor drain hole. Insert a 1/2-inch concrete drill bit into the rotary hammer. Cutting Concrete Basement Floors ... We cut basement slabs regularly during remodels for plumbing. Guide the vent pipe up through the hole and into the attic or room above and slip its lower end into the fitting at the floor. Before cutting into the concrete floor, obtain a set of the home’s mechanical prints to determine the... Tools and Supplies. Don't let a concrete wall or floor stop you from completing your project. Vic and Susan Hunt are a husband and wife team with over 10 years experience designing and building homes. To drill into concrete, use a hammer drill with a carbide-tipped masonry bit. Mistakes must be corrected before the concrete folks come back to prep and pour concrete! Plumbing systems in concrete slabs go in before the concrete is poured, as they are installed beneath the slab. Have just noticed that when you flush toilet on ground floor (concrete floor slab) it bubbles and you can see the water coming up when you flush where toilet pipe goes into waste pipe in floor. 3. space between the pipe and the concrete to accommodate the drain assembly (see photo below). I rented a concrete cutter to cut a channel into the concrete and then took it back and rented a jack hammer to break up the concrete into smaller pieces to get them out. Congratulations! Learning how to drill through concrete can seem difficult, but what looks like a challenging job can be made simpler with the right tools and proper technique. We didn't know to do this on our first house, and there was no drain pipe near the air conditioning unit when it got installed in the attic. There are three main ways to remove the concrete slab to install plumbing. Plumbing is one of the rough-in elements of construction and is generally hidden by the finished elements such as walls, floors and roofs. The pipe in the black box is for the bath tub, and the largest pipe sticking up a few inches at the outer wall, to the left, is the toilet drain. Hi, We just bought a new house in LA built in 60s and want to add on to the back to add a master bath. The Victorian era saw the widespread introduction in mass housing with suspended timber floors, alongside rudimentary solid floors in hard-wearing areas such as kitchens and hallways. Generally, it's better to keep plumbing fixtures close to the shower, sink or commode. Chunks of concrete breaking away from the main slab Moisture from a leaking drain can permeate up into floor coverings, spoiling carpets or warping timber boards. The plumbing trenches are typically dug at the same time as the slab footings, if any. Don't let a concrete wall or floor stop you from completing your project. Set the flange aside for the time being. Hey - me neither! He will dig trenches as needed to run the sewer pipes and water pipes, and … But before you can even pour the slab, the building inspector must first approve and sign off on … For a 1-1/2-inch vent pipe, a 2-1/2-inch hole is sufficient. See our page on checking Plumbing in the Walls for pictures and more info on this essential drain. Plastic sand box that makes a blockout in the finished slab for the drain at a shower or bathtub. Patch the top of the trench with concrete … We’ll tell you how to stop water from coming through concrete floor. The drains and vent pipes on this house fall within load-bearing stud walls, except for the toilet and tub drains. For a 1-1/2-inch vent pipe, a 2-1/2-inch hole is sufficient. See our pages, Checking Over the Concrete Slab, Drain Pipes, and Plumbing in the Walls, for other items to review and check. Ideally, you’ll already have a drain roughed in, with the pipe sticking a few inches above the floor. The first step in repairing the issue is to find the source of the leak. They usually remove the sawed concrete and get it out of the building for you. Hi, We just bought a new house in LA built in 60s and want to add on to the back to add a master bath. If you are planning on installing a wet room drain onto a concrete floor, the most popular option is to use a screed drain. Add a Drain Cover. ... but starting too early will mean the blades of the machine may dig into the concrete causing rutting, humps, and other problems. I used a standard Skil saw and a cheap diamond blade to do the job.See the plumbing video that follows this one: https://www.youtube.com/watch?v=tP6vrPAoYNUSupplies Used In This Video:• SkilSaw Circular Saw: https://geni.us/h5UP• Diamond Saw Blade: https://geni.us/zc9H11• Sledge Hammer: https://geni.us/MBFkeT Plumbing Drain Design for Concrete-Slab Houses. This guide reviews how to drill into concrete safely and effectively. Where you place the shower will depend on the up-flush drainage system. It takes a couple of days to put down, but not a month of curing. Regarding the floor after the trenching, there's goop my artisan tile setter used, called anti-fracture membrane. Next, turn on the drill's hammer function and start drilling, applying firm, but not forceful, pressure. A broken pipe under the slab can cause wet spots on your floor because concrete is a porous material. If the pipe is too short, you’ll have to break up the concrete and extend it. You will probably be checking the layout after the workers have finished and gone for the day. A broken pipe under the slab can cause wet spots on your floor because concrete is a porous material. Unfortunately, even repairing foundation problems can lead to plumbing issues. He was absolutely convinced that his crew had been accurate on everything - and this is a top notch company. The blockout gives some space to adjust the drain piping, as shown in the picture below. Take your floor plan and measuring tape, and check the location of every pipe. The photo below shows a sink drain, hot water line, and cold water line at a stud wall on the outer edge of the floor slab. It … vre from our library of over 2100 slides addressing a small but important element of integrated design and radiant based HVAC systems. Attempting to repair old, galvanized plumbing is typically a waste of money, as dated pipes will continue to spring new leaks as they age. It's supposed to keep the tile from breaking if the new concrete expands and shifts at a different rate than the old. Tip Build the kitchen sink island or cabinet separately so that you can bring in the flat pack or custom-built kitchen and fit it into place once the plumbing is done. The kitchen wall where the refrigerator was located backed up to the foyer at the front door of the house, and, sure enough, the pipe was a few inches outside the wall. Then, drill a shallow pilot hole using a low speed or short bursts. 1. Finished flooring will be removed in order to expose the concrete. The house has a concrete slab foundation so I am not sure how to tie into the existing plumbing. Tell her to get over it, you’ve bought the house and box them in. Before you dive into one of these projects, you should consider an often-overlooked logistic of working in a basement or garage?the concrete floor beneath the structure. That's why, when I checked and measured the pipe layout in one of our houses before the concrete slab was poured and found the error, I called the plumber right away. At this point, you will no longer see the horizontal drainpipes and the main sewer line, but you will see the "stubs" that extend vertically out of the sand. Building and plumbing a house takes skill, perseverance, precision and aptitude. Learning how to drill through concrete can seem difficult, but what looks like a challenging job can be made simpler with the right tools and proper technique. Go to Home Site Preparation for Concrete page. How to Cut a Concrete Floor for New Plumbing Before Cutting. We’ll also present you with solutions on how to seal concrete floor from moisture including some proven concrete floor moisture sealers. Don't leave this one out! You may have a problem with the pipes in your concrete slab foundation if you’re walking around your home and find your socks suddenly wet from some mysterious moisture. Acid Stain Concrete Flooring Three main ways to remove the can from the new concrete expands and shifts a... Setter used, called anti-fracture membrane unless it jumps over into the existing plumbing adding plumbing repairing the issue to... ’ s mechanical prints to determine the... Tools and Supplies if does! 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