Patching concrete floor after rough plumbing

It has strong adhesive properties allowing it to be applied down to a featheredge. Concrete is also often a major building material in and around homes. I am a moderatelycapable diyer, but i hired a contractor for this job because my life is more busy than usual at this time. Most residential concrete floors are about 4 inches thick and contain steel reinforcement in the form of steel rebar and steel mesh. The plumber installs these stubs right after the builder frames the shell of the house. Sand floors will need to be retroweled extensively, to restore a smooth, divot free surface. After passing the plumbing inspection i back filled the dirt and. Im pouring concrete over rough plumbing enter image description here.

With years of use though, a concrete floor will wear down, with the once smooth surface becoming roughened or damaged. It is advised that you place the wirings in a protective pipe or tube together with the roughin. You have to prep the edges correctly and use the right materials. Then 12 drill horizontal through existing slab, and epoxy rebar, concrete over. This is of course a licensed plumbers domain so dont bother doing it yourself, unless you are a plumber, or dont intend to get the slab inspected by the council authorities. Explore the concrete to see if there are any cracks, pits, or discrepancies in levelness that need to be fixed and use a concrete repair kit to fix them. While concrete is a strong construction material, it can still crack. Jun 23, 2019 patching concrete floor patching concrete floor in basement patching cracks in concrete garage floor. Our schedule has the roofing contractor starting the day before the plumber in order to get the house dried in. Prepare the edges of the hole by undercutting them with a cold chisel. Removing the existing plumbing leaves holes in the floor that must be filled. Sure, concrete is tough stuff, but even concrete cracks. As the concrete settles, scrape the surface with a trowel.

I am perplexed to how the plumber would have glued the drain down before concrete was. You can repair a concrete floor by cleaning and straightening the damaged area, and then filling it with mortar. It is advised that you place the wirings in a protective pipe or tube together with the rough in system so as to have an organized and orderly plumbing system. Surface preparation machines can remove unsound concrete and leave the proper surface profile.

Patching concrete slab after plumbing work concrete, stone. How to patch and level a concrete subfloor pretty handy girl. How to repair a hole in the floor of a slab foundation home guides. Jan 07, 20 patch and level a concrete subfloor preparing the concrete floor. The areas you drilled and then broke off are considered rough.

I also had to break up footings in a few locations as well. During finishing, the floor is leveled and smoothed with a surface that you can walk across on your bare feet. Your bathroom plumbing diagram under the concrete slab may no longer. Plumbing in a concrete slab with images concrete slab, pouring. Fortunately, you can make simple concrete repairs yourself. If you get some of the mixture on your skin, rinse the affected area under cool water. Sep 20, 2019 pour the acid mixture over the old concrete. Do not use readymix concrete such as quikrete as this is not suitable for patching. 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. If you will be installing a floor covering, and do not have 4 to 6 months for the trench concrete to dry, you can either use rapid set concrete from cts cement or treat the top of the trench concrete and one foot each side onto the main slab with ardex mc or koster vap 1 2000. After making sure that the concrete has been properly sealed, you are ready to start tiling. Learn a simple system to back fill the hole after running your new plumbing in the basement. Vacuum the area around cracks and apply a peelandstick primer with a roller or paint pad.

Many remodel projects in homes with a concrete foundation and slab call for moving plumbing fixtures, such as toilets, sinks and floor drains. Roughin plumbing goes beneath the concrete structure or slab where there are wires attached thereto. The plumbing system build starts with a concrete slab plumbing rough in. Start by taking a hammer and chisel and tapping any rounded edges around the crack or hole to make them straight, which will help the mortar stick better. In that time, the concrete should have gained about 75% of its final strength. Removing the existing plumbing leaves holes in the. Voids around piping passing through concrete floors on the ground are appropriately sealed.

Vinyl concrete patcher is made of a special blend of vinyl resin, fine sand and portland cement. How can i patch my slab around a roughin pipe in a difficult to access. After the primer has cured, mix the compound and spread it onto the. Forget about circular saws, concrete blades and jackhammers.

Rough in plumbing goes beneath the concrete structure or slab where there are wires attached thereto. Do roughedin shower drains have to be below concrete. After the drain relocation was done i put the sand back in, compacted it. Holes 1 inch or deeper require a concrete mix with coarse, crushedstone aggregate, which bonds well with existing concrete.

Considerations cutting through a concrete floor should be a last resort. Broke the concrete in my basement to run new pipes for the basement bathroom. The plumber put sand under the pipes to support them at the correct angle. Patching concrete slab after plumbing work concrete. I used a scraper and lightly hammered any spots that sounded hollow underneath to loosen any weak pieces. A wellfinished concrete floor should be comfortable to use as well as strong and durable. These rough ins are not below concrete, but they are below the subfloor. Most compounds require that you first coat the floor with a primer.

For a longlasting repair, pay close attention to the edges and the mix. Concrete bonding adhesive eliminates the need to roughen up the surface for the new concrete to adhere. You can add a small amount feb 19, 2010 it took about 25 bags of 60 pound concrete mix to fill and repair the new bathroom floor. Temperature changes, heavy weights, and dropped objects can all damage your concrete floor by causing cracks and holes. Oct 14, 2019 sure, concrete is tough stuff, but even concrete cracks. Patching and repairing concrete can be easy or difficult, depending on the project and the amount of deterioration. Crackshot posted in construction techniques on january 12, 2007 11. I used a concrete saw to score the trenches and then a jack hammer to break the concrete. Make sure the piping is well supported and that the closet flange is level.

The plumber test the pipes, cover them with sand and then you can pour the concrete for the basement floor. The gravel bed is roughly six inches covering all of the pipes, and will support our insulation and concrete slab. How to repair a hole in the floor of a slab foundation. Patching concrete slab after plumbing work im doing a kitchen renovation, moving an island sink to a new island location, as well as adding two dishwashers and an icemaker to the island. Selfleveling concrete is a liquid mortar that you pour and spread onto a sloped, rough, uneven, but structurally sound floor. You will be pouring a little over existing floor but not much and feather flat. Large shower units are positioned in the bathroom, but the plumber will not hook them up to the roughedin plumbing stubs until the construction is further along. If you use a readymix concrete patch, all you need to add is water.

Adding extra water to concrete will make it more workable and less freeze and crack resistant. After that, you need to let the concrete dry for a day. The concrete should have been set up enough to support wheelbarrow weight after a day, but go ahead and wait the same 7 days. Vinyl concrete patcher is ideal for making smooth repairs to crack or chipped concrete floors, sidewalks or steps. Scrub with a concrete degreaser and a stiff brush, then follow up with a pressure washer. Overview and total cost of diy rough plumbing in a slab when. The reason being, it can be difficult to glue pipes together if rain is dripping down through the roof sheathing. Checking the plumbing drain roughin installation in the stud walls is one of the most important things you will do. You can create a smooth surface with a metal trowel.

Installation of subrough plumbing begins before the pouring of the concrete slab. Concrete easily absorbs stains, and sealing will prevent that. Once the concrete is out, you can dig in the remaining trench to remove the sand or soil before running the new plumbing. It took about 25 bags of 60 pound concrete mix to fill and repair the new bathroom floor. Cement or vermiculite floors can be cleaned with a broom or blower, patching any divots or rough areas.

Concrete slab repair for plumbing trench concrete, stone. How to repair a hole in the floor of a slab foundation put on safety glasses. Switch the trowel for a wood float to make a rough surface. Typically, the plumbing rough in starts just after the rough framing has been completed. Very durable, it can also be aesthetically pleasing. Simply pouring wet concrete into a hole in your driveway, sidewalk, or basement floor wont make for a lasting repair. Patching concrete slab after plumbing work i am a moderatelycapable diyer, but i hired a contractor for this job because my life is more busy than usual at this time. Rough in plumbing is the inslab drainage piping that is laid for all showers, toilets, vanities, laundry basins and kitchen sinks.

Well, the contractor walked midjob, so ill be gcing after all. After breaking up the concrete to run the plumbing for the sinks and toilet, it was time to start framing the walls and ceiling. If the floor has a rough finish, apply the polyurethane with a broom or brush using the bristles to work the sealer into the rough surface. Installation of subrough plumbing and hvac begin after the concrete pouring in the foundation walls and the formwork taking off. How to cut a concrete floor for new plumbing home guides. Concrete patch in bath remodel for plumbing pipes youtube. For small patching jobs, use a premixed concrete patch. Underground plumbing backwater valves are required to be accessible for inspection and repair at all times. May 30, 2016 any way you slice it, if you want to be an owner builder but worry about the costs of plumbing, doing an informed diy job is a huge cost savings. Its important to repair any leak underneath a concrete floor slab as. You can mix a pourable patch for this repair, but i dont recommend it. Subrough plumbing and hvac installation schedule how to. Take your floor plan and measuring tape, and check the location of every pipe.

How to back fill and pour new concrete in your basement. Letting concrete dry before it cures garuntees cracks. I added additional cement to the concrete mix to give it more strength. The technique for patching cracks will depend on the size of the crack. Plumbing in concrete slab benjamin franklin plumbing.

If concrete were poured against the rough parts, it would conform to. Apply a layer of crack isolation membrane over cracks to prevent cracks from appearing later in the overlying tile. After the primer has cured, mix the compound and spread it onto the floorup to 12 inch thickwith a floor squeegee. Most of the trench edges have 12 inches of smooth saw cut with the rest of the edge jagged. Before pouring the self leveler there is some prep work required. Patching concrete floor after rough plumbing terry love. If you have concerns about the state of repair of under slab plumbing or. Push air bubbles out to the edge with a jroller or the edge of a. How to sand concrete in 4 easy steps homerepairgeek. All pipes passing through concrete walls or floors are protected from breakage. For a bathroom floor repair, either concrete will perform just as well as the other. Installation of sub rough plumbing begins before the pouring of the concrete slab. Chisel all the loose concrete edges so there is an undercut. This is what i ended up doing after some research and opinion asking.

Using the dimensions on the floor plan, measure from the outside of the foundation walls or slab. The period for completing the entire roughin plumbing procedure usually takes two to four days depending on the complexity of your plumbing needs. To cut through the steel and concrete, rent a walkbehind concrete wet saw, fitted with a diamond blade. Pour the mixture directly from the bucket or use a plastic sprinkler can to distribute it over the old concrete. There are more than a few products available for concrete sealing, but a heavyduty waterbased polyurethane is a good choice. As you put the sand in moisten it and tamp it down. How to repair a hole in the floor of a slab foundation home. Product costs, availability and item numbers may vary online or by market. There are a variety of ways to remove unsound concrete, including highpressure water jets, sand blasting, grinding, scarifying, and, of course, oldfashioned impact methods, such as with scabblers or jack hammers. Remove the chipping debris and brush the rough edges of the concrete with a wire brush. The plumbing is done, and now im ready to repair the slab. If concrete were poured against the rough parts, it would conform to the contours of the sides. Oct 24, 2011 installation of sub rough plumbing and hvac begin after the concrete pouring in the foundation walls and the formwork taking off. Use it as a depth gauge to locate pits and craters that need filling, then circle them.