For example, a floor drain in a commercial kitchen may need to handle a higher flow rate than a floor drain in a residential basement. Consequently, knowing the discharge rate of whatever equipment you must connect to a drain is important.

In conclusion, when selecting a floor drain, it is important to consider the application and specific needs of the space. Linear drains, center point drains, and general-purpose drains all have their advantages depending on the design and layout of the shower or area.

While the device and labor are the two core backflow installation cost factors, prices can vary according to some of these other factors:

When you apply silicone caulk around the surface of the inner flange for the liner installation, be sure not to apply too much. Many installers tend to think more is better, but that’s not true. If you apply too much silicone, there’s nowhere for it all to go after you place the clamping collar. So, the excess silicone tends to bubble up under the liner and can block the weep holes.

Lexie is a deputy editor at Forbes Home and has over 6 years of professional experience as a writer and editor in the home improvement space. She's previously worked at sites such as HomeAdvisor and Angi (formerly Angie's List).

The drain profile plays a crucial role in the overall aesthetics of the space. It can also affect water flow into the drain. This is particularly important for a tile shower on a second floor, it’s essential to ensure that the drain can be seamlessly integrated and still leave enough room for a P-trap. Since there is usually limited space between floors, opting for a lower-profile drain is advisable.

Linear drains are rectangularly shaped and can be installed at the entrance, along the wall, or in the center of the shower floor. They allow water to flow through the drain and into a trough or channel beneath the shower floor. Linear drains offer functional benefits, such as increased safety, accessibility, and design flexibility. They are especially suitable for curbless showers or universally accessible wet spaces.

This is arguably one of the most critical steps in the solvent welding process. If a cement and pipe material are incompatible, the drain and pipe cannot chemically fuse together, leading to leaks and failure.

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Backflow preventer installation costs also vary by the size of the valve. Measurements refer to the diameter of the valve; these typically range from 0.5 inches to 12 inches. The table below shows how size affects the typical cost range ($35 to $600) for device costs only. DIAMETER OF VALVE TYPICAL DEVICE COST 0.5 inches $35 – $55 1 inch $50 – $100 2 inches $75 – $200 6 inches $100 – $300 8 inches $100 – $400 12 inches $400 – $600 Note: This table shows device costs only. Labor is a separate charge See More See Less

Oatey’s Hub PVC General Purpose Drain and ABS General Purpose Drain are recommended for general-purpose usage. Photo courtesy of Oatey

You’ll need to have your backflow preventer tested every year. During that inspection, the plumber can let you know if it’s time to replace the device. On average, these devices last between five and 10 years.

Selecting the appropriate drain and following drain installation best practices can make all the difference in a system’s overall performance. Courtesy of imaginima/E+/Getty Images and PC Photography/iStock/Getty Images Plus

Install Tip: When it comes to waterproofing, many installers make the mistake of leaving the weep holes in the drain base unprotected. This prevents water from evacuating through those holes. In time, this over-saturation causes the thin-set below the tile or mortar bed to deteriorate, leading to mold and mildew in the shower as well as a foul odor or discoloration.

Selecting a floor drain depends on the application, whether it is for a shower drain or an area drain. There are various types of floor drains to choose from, including linear drains, center-point drains, and general-purpose drains.

In some cases, municipalities require that business owners and homeowners obtain a permit before installing a backflow preventer, especially because the devices are connected to the main water supply. If this is the case, budget between $50 and $100, though the licensed plumber will likely obtain this permit for you.

Connection type: The connection type is another important factor when selecting a shower drain. Different pipe materials require different connection methods. Most PVC, ABS or CPVC drain bodies must be solvent welded over 2-inch or inside 3-inch pipe.

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However, if waterproofing is necessary, selecting the correct product that can seamlessly integrate with the drain is crucial. This ensures there are no potential points of failure if water is present.

Sean Comerford is a technical applications manager at Oatey Co. He is a third-generation tradesman with nearly 20 years of plumbing experience, including serving as the lead plumber for commercial/residential new-construction, service and fire protection jobs. He holds a State of Ohio Fire Protection License for Sprinkler and Standpipe.

Whether it be a beautiful custom shower or utility floor drain, consider the aesthetic options available for the perfect blend with the environment. Drains come in various colors and finishes, from matte black and white to brass and stainless steel.

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It’s worth noting that in most cases, the sizing for the drain and pipe will be determined by an engineer or specified on the project prints before the installation. For example, on a commercial project, the prints might state which size to use, based on the size and scope of the project.

Draining a larger surface area requires a larger drain. So, for drainage in a garage, patio, or other large outdoor areas, use larger drains such as the 6-inch by 6-inch utility drain to accommodate the space. This drain is available for both ABS and PVC applications.

QuickDrain's linear drain system can be customized to fit wall-to-wall in a shower enclosure, providing easy installation and minimal standing water. Photo courtesy of Oatey

QuickDrain’s expanded line of decorative covers and finishes are available for SquareDrain and complements all major design trends, including mid-century modern, industrial, contemporary, and modern farmhouse. Photo courtesy of Oatey

A center point drain will be your best bet if you prefer a more traditional look and feel. However, opting for a center point drain does not mean you must sacrifice style. Many square drains have elegant cover designs that appeal to every décor and need.

However, in design-build situations, figuring out the sizing may fall on the contractor or installer. In most cases, a three- or 4-inch drain will handle a significant amount of water flow, but special circumstances may require even larger sizing.

You may also encounter some add-on costs when installing your backflow preventer, including a thermostatic freeze relief and an anti-theft device.

Timothy has written about personal finance, including detailed home renovation and repair cost guides, since 2017. His work covers everything from plumbing and roofing to solar and pest control. Find his work on sites like Angi, USA Today and The Penny Hoarder.

Finding a reliable Plumber in your state doesn't have to be a hassle. Choose from a list of top-rated plumbers with extensive knowledge and experience on Angi.

Backflow preventer installation costs between $105 and $1,400, with the average property owner spending $325 per backflow preventer. Backflow preventers are essential in many commercial and some residential properties as they keep contaminated water from flowing backward out of your home and into the public drinking water supply.

When selecting any drain, the plumbing connection is the first factor to consider to ensure a successful and leak-free installation.

Pipe size: Matching the drain size with the pipe size is crucial for a functional drain installation. Ensure that the drain size aligns with the pipe size you connect to. By using a drain that works with multiple pipe sizes, you can eliminate the need for purchasing a separate drain for each pipe size, ultimately saving time and money.

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The Oatey Integral Floor Drain With P-Trap and Backwater Valve provides a comprehensive solution for preventing backflow and sewer gases from entering living spaces. Photo courtesy of Oatey

If your backflow preventer stops working—or if the plumber spots an issue during annual testing—you’ll also need to pay for repair work. On average, plumbing repair costs $45 to $200 an hour, depending on where you live, the type of work and the urgency of the repairs. Advertisement THIS IS AN ADVERTISEMENT AND NOT EDITORIAL CONTENT. Please note that we do receive compensation for any products you buy or sign up to via this advertisement, and that compensation impacts the ranking and placement of any offers listed herein. We do not present information about every offer available. The information and savings numbers depicted above are for demonstration purposes only, and your results may vary. Compare Quotes From Top-rated Local Plumbers Free, No-commitment Estimates Find A Plumber

Weep holes are important in any shower system to evacuate water wicking through the grout or cracks between the horizontal and vertical wall transitions. Installers can utilize weep guards or pea gravel around the drain barrel to ensure the weep holes do not get clogged.

Center point drains are typically located at the center of the shower floor and can be square or round. Water flows via a conventional four-way, compound slope toward the drain.

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Oatey No-Caulk Shower Drains are designed for pre-formed shower bases and attach over 2-inch pipe with a mechanically compressed gasket that does not require solvent cements. Photo courtesy of Oatey

Backflow testing costs vary across the country, but the average homeowner should budget between $100 and $200 for this service.

When it comes to drain installation, ensuring the pipes themselves, including riser pipes, are level is crucial. It is also important to do the necessary legwork ahead of time to determine the slope toward the drain, requiring coordination with a mason or other tradespeople to prepare the area properly. Carefully evaluating these factors can help avoid excessive drain height discrepancies.

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To arrive at the average costs in this article, eight contractors and cost databases were surveyed on national and local levels. All averaged figures were correct at the time of publication and may be subject to change.

The type of backflow preventer you install will have the largest impact on your overall costs. Backflow preventers for garden hoses are the most affordable while the backflow preventer installation cost for a basement drain can reach $1,000. The cost to replace an irrigation backflow preventer sits somewhere in the middle. TYPE OF BACKFLOW PREVENTER TYPICAL DEVICE COST Garden hose $5 – $35 Home appliance $20 – $100 Irrigation or sewer system $100 – $600 Floor or basement drain $150 – $1,000 Note: This table shows device costs only. Labor is a separate charge. See More See Less

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If you use an acrylic or fiberglass base, no-caulk drains are popular because they do not require PVC or ABS cement to connect to the pipe. They are designed for preformed shower bases and attach over a 2-inch pipe with a mechanically compressed gasket.

Drains don’t always require a waterproofing membrane, so be cautious in selecting the appropriate drain. Basement floor drains fit into this category. There are plastic snap-in drains that can be inserted into a Schedule 40 DWV pipe cut flush with the floor for easy removal.

Backflow preventers need an annual test to ensure they are working optimally. If you are required to have a backflow preventer for any system or appliance in your home, your water company may even shut off your water if you don’t get an inspection by a certified backflow inspector every year, in the month that it was originally installed.

By working ahead of time and planning for the slope, whether it’s in a shower, patio, or other area, the drain installation can be seamlessly integrated into the overall construction process.

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The condition of existing pipes can also impact the backflow replacement cost. Working with older pipes either requires that the plumber installs new pipes for an easier installation or retrofits the system onto the existing pipes. Either way, this can increase both parts and labor costs. On average, the cost to install new plumbing is $6,000.

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The best place to install a backflow preventer is in an above-ground enclosure, though sometimes, you can install them in an underground vault. When you hire a plumber to handle the work, they’ll be able to recommend the best location for installing the device.

For a more permanent installation, the snap-in drain can also be solvent-welded. It comes in just one piece, which prevents the cover from being removed. If waterproofing is not required, this snap-in drain option could be suitable.

The cost to install a backflow preventer breaks down into two main categories: the backflow preventer cost itself and the labor to install it.

Check valve

In general, commercial buildings and multi-family homes are required to have backflow preventers installed and regularly tested. Residential homes may also need a backflow preventer, especially if they have an outdoor sprinkler system installed.

Regarding general-purpose drains, choosing a drain that can handle a worst-case scenario emergency is recommended. In emergencies like line bursts or washer malfunctioning, having a drain that can handle the consequent heavy water flow could prevent water damage while stopping the water supply.

If you will be joining a PVC, ABS or CPVC drain to its corresponding pipe, you must select the corresponding solvent cement for the connection. For example, use PVC cement for PVC connections and ABS cement for ABS connections.

Pipe material: As with any drain installation, the material of the pipe is crucial. You need to ensure that the drain you choose matches the pipe material you connect to. For PVC piping systems, use a PVC drain; for ABS systems, use an ABS drain. This ensures compatibility and a secure connection.

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Plumbers may use tools like lasers or strings to determine the proper height and position of the drain. This prep work is typically done before the concrete is poured and the tile or other finishes are installed.

Oatey 130 Series Shower Drains are a cost-effective center point drain option designed for use with tile or marble showers. Photo courtesy of Oatey

For a smaller surface area, such as a shower base, offset shower drains are the best options. They feature an offset design that allows for a 1 1/2 inch margin of error when roughing in the pre-formed shower stall base. This offset offers room to work around joists and imperfect slab penetrations.

In addition, choosing a drain with a higher flow rate than required can be unnecessarily costly, while choosing one with a lower flow rate can lead to clogs and other issues. In short, carefully consider the discharge rates of the application when selecting your drain.

General purpose area drains are designed to remove water and other liquids from basements, laundry rooms, garages, and patios. These drains come in various types and sizes, with different strainers and finishes.

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On average, a backflow preventer device costs between $35 and $600, though in some extreme cases, you might spend as little as $5 or as much as $1,000 for the device. For instance, the backflow preventer installation cost for a garden hose may only be $5 for the unit while a basement drain backflow cost can reach $1,000 for the system alone.

The choice of drain can be as simple as the look and shape you prefer. A linear drain would be the way to go if you are looking for spa-like luxury and high-end aesthetics. With its sleek, distinctive appearance, this type is an especially good choice if you want to make an impression.

Oatey Series OffSet Shower Drains feature an offset design that allows for a 1 ½ inch margin of error when roughing in the pre-formed shower stall base. Photo courtesy of Oatey

The plumbing connection involves a few aspects, such as pipe material, connection type, pipe size, and shower base, all of which play a role in determining the appropriate drain for your installation.

Backflow preventers are often required in business properties and multi-family properties, but some single-family homes may need them, too. They’re most common in homes with automatic irrigation systems and fire sprinkler systems.

Regardless, matching the drain and pipe size is crucial for a functional drain installation. By doing so, you can avoid costly and time-consuming mistakes or the need to purchase multiple drains to accommodate different pipe sizes.

If you are required by the municipal water provider to install a backflow preventer for a system or appliance in your home or commercial property, you’ll need to hire a licensed installer. This is not a DIY task. Instead, get quotes from multiple plumbers near you who specialize in this line of work, and go with the most affordable—but still well reviewed—contractor.

Backwater valve

A backflow preventer is an essential plumbing component designed to prevent dirty, contaminated water from flowing back into public drinking water after entering a home or business. They are usually required in multi-family homes, businesses and homes with an irrigation system.

Because backflow preventers use copper and brass components, they can be targets for theft. If your preventer is in an easily accessible outdoor location and you’re worried about it being stolen, you can spend between $200 and $300 on an anti-theft device. Advertisement THIS IS AN ADVERTISEMENT AND NOT EDITORIAL CONTENT. Please note that we do receive compensation for any products you buy or sign up to via this advertisement, and that compensation impacts the ranking and placement of any offers listed herein. We do not present information about every offer available. The information and savings numbers depicted above are for demonstration purposes only, and your results may vary. Looking For Experts To Solve Your Plumbing Problems? Finding a reliable Plumber in your state doesn't have to be a hassle. Choose from a list of top-rated plumbers with extensive knowledge and experience on Angi. Find A Plumber

W23qIt’s essential to avoid having the drain set too high, as this can prevent proper drainage and cause water to pool outside the drain.

The Oatey 140 Series / 101 PNC Series No-Caulk Round Brass Shower Drain with Stainless Steel Strainer mechanically attaches over 2 in. Schedule 40 DWV pipe, no caulking required. Photo courtesy of Oatey

Regarding shower areas, choosing an appropriately sized drain and one long enough to handle all the showerheads and other equipment is essential to prevent water backup from leading to hazardous situations. You can check the gpm rating on the equipment or from the product.

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Drains are a vital component of any home’s plumbing system. Selecting the appropriate drain and following drain installation best practices can make all the difference in a system’s overall performance.

A great example of a low-profile floor drain is the Oatey 130 Series Low-Profile Drain. These drains are specifically designed for tight spaces, making it ideal for retrofits and renovations. Photo courtesy of Oatey

It’s important that the drain can adequately handle the anticipated volume of drainage. Drains are designed to handle certain discharge rates, measured in gallons per minute (gpm).

Backwater valves protect your home from being contaminated by water from the public water system while a backflow preventer keeps your home’s contaminated water from entering the public water system. That’s why cities often take an active role in ensuring your backflow preventer gets an annual inspection by a licensed plumber.

At Hill's Irrigation, you'll find top-quality brass backflow devices preventers constructed bronze, brass, iron, or polymer in various sizes.

Shower base: The type of shower base you select will determine the type of drain you need. For instance, if you have a tiled shower base or a marble shower with a shower pan liner, you would need a drain specifically designed for tile or marble showers.

While the cost of backflow preventer installation is a one-time fee (until it’s time to replace it), you will encounter ongoing costs associated with maintaining the system.

Integral floor drains have a built-in trap and backflow device. They combine multiple components into one unit, eliminating the need for additional pipes and fittings.

If you live somewhere with extremely cold temperatures in the winter, you may need to spring for a thermostatic freeze relief valve for your device. These valves prevent the system from freezing when temps drop and cost roughly $100 on top of the base device cost.

In most cases, labor will make up the bulk of the cost to replace a backflow preventer. This work must be done by a licensed professional, which means you’ll need to hire a plumber to complete the task. On average, expect labor costs to run between $100 and $400. Advertisement THIS IS AN ADVERTISEMENT AND NOT EDITORIAL CONTENT. Please note that we do receive compensation for any products you buy or sign up to via this advertisement, and that compensation impacts the ranking and placement of any offers listed herein. We do not present information about every offer available. The information and savings numbers depicted above are for demonstration purposes only, and your results may vary. Find Affordable Plumbers And Plumbing Services Angi helps you connect with specialized plumbers who are reliable and know how to handle plumbing installation and repairs. Explore Options

By collaborating with other professionals and accurately measuring and setting the drain, the end result will be a properly functioning drain that seamlessly fits with the finished floor.