Fixing Your Kohler Toilet Leaking Problem: A Comprehensive Guide

Are you experiencing a frustrating leak in your Kohler toilet? Don’t worry, you’re not alone. Kohler toilet leaking can be a common household issue, but understanding the causes and how to fix them can save you time, money, and frustration.

In this article, we will explore the various reasons why a Kohler toilet may leak, such as flapper valve issues, problems with the fill valve, worn-out seals, and loose or damaged bolts. By identifying the source of the Kohler toilet leaking and following our step-by-step guide, you can easily fix the problem yourself. We’ll also provide tips on when it’s best to call a professional plumber and how to prevent future Kohler toilet leaking.

Whether you’re a DIY enthusiast or just looking to save some money, this article is here to help. So let’s dive in and put an end to that annoying Kohler toilet leaking once and for all.

The most important findings at a glance

  • The main causes of a Kohler toilet leak include issues with the flapper valve, fill valve, worn-out seals, and loose or damaged bolts.
  • The source of the leak can be identified as either coming from the tank, the base, or the fill valve.
  • To fix a leaking Kohler toilet, repairs may include repairing the flapper valve, replacing the fill valve, resealing the toilet, or tightening/replacing bolts.

kohler toilet leaking

Flapper Valve Issues

Leaky toilets can be a real hassle, especially when it’s caused by flapper valve problems . But fear not, there are some telltale signs to look out for. If you hear a constant flow of water or notice a slow trickle into the bowl , chances are you have a flapper valve issue.

A hissing sound coming from the tank is another red flag that the valve isn’t sealing properly. And if your flush seems weak, leaving water behind, that’s another symptom to consider. To fix the problem, start by inspecting the flapper valve for any damage or wear.

If you spot cracks or deterioration, it’s time to replace it with a new one from the hardware store. And don’t forget to clean the valve regularly to keep it free from debris. Adjusting the chain length for a proper seal can also help prevent leaks.

By taking care of flapper valve issues and staying on top of maintenance, you’ll keep your Kohler toilet running smoothly and avoid any costly repairs down the line. So be proactive and keep those plumbing fixtures in tip-top shape.

If you’re looking for a visual guide to help you with your rough plumbing project, check out this informative article on rough plumbing diagrams .

Problems with the Fill Valve

In the realm of Kohler toilets, there exists a troublesome entity known as the fill valve. This seemingly innocent component has the power to unleash leaks upon your peaceful bathroom domain if it fails to shut off properly. Fear not, dear reader, for I am here to guide you through the treacherous waters of toilet repair.

A simple adjustment of either the float arm or the fill valve itself can banish the leaky fiend from your porcelain throne. But wait, there’s more! Sometimes, the water level within the tank becomes a fickle beast, either too high or too low.

This imbalance can lead to catastrophic consequences such as overflow or feeble flushing. Yet again, our trusty heroes, the float arm and fill valve, come to the rescue. With their power of adjustment, they can restore harmony to the watery depths of your toilet.

Ah, but what’s that noise? A haunting symphony of water echoes through the silence, signaling a troubled fill valve. This may be due to a faulty mechanism or an accumulation of sediment, both of which require the ultimate sacrifice: valve replacement.

Fear not, for with regular maintenance and inspection, you can ward off these unwanted visitors and ensure the continued functionality of your beloved Kohler toilet. In conclusion, dear reader, remember the importance of taming the fill valve beast. With a few simple adjustments and a watchful eye, you can maintain a leak-free and efficiently flushing toilet.

May your bathroom adventures be filled with tranquility and success.

kohler toilet leaking

Worn Out Seals

Maintaining the optimal condition of your Kohler toilet is essential for preventing leaks and costly repairs. Among the crucial aspects to consider are the seals. As time passes, seals can deteriorate, leading to water damage.

But how can you determine if your seals are worn out ? Be on the lookout for signs like water gathering around the base, an unpleasant smell, or a continuously running toilet. If you observe any of these indicators, it is imperative to take action before the issue escalates.

The good news is that replacing worn out seals in a Kohler toilet is a relatively straightforward process. Begin by turning off the water supply and emptying the tank. Then, remove the old seals and thoroughly clean the area.

Finally, install new seals and ensure they are properly positioned. Regular inspection plays a crucial role in preventing worn out seals. Check for any signs of wear or damage and address them promptly.

When replacing the seals, opt for high-quality ones to guarantee a long-lasting and effective seal. By inspecting and replacing worn out seals, you can prevent leaks and potential water damage in your Kohler toilet. Remain proactive in your maintenance routine and enjoy a leak-free and efficient toilet for many years to come.

Fixing a Leaking Kohler Toilet: Step-by-Step Guide

  1. Diagnose the problem to identify the source of the leak.
  2. Gather the necessary tools for the repair.
  3. Perform the necessary repairs, such as repairing the flapper valve, replacing the fill valve, resealing the toilet, or tightening/replacing bolts.
  4. Test the toilet to ensure the leak has been fixed.

Loose or Damaged Bolts

Loose or damaged bolts can often be the culprit behind leaking Kohler toilets. Keep an eye out for indicators like a wobbly toilet bowl, water gathering around the base, or unpleasant odors. No need to fret, though, as you have the power to fix this issue yourself.

Simply grab a wrench and cautiously tighten the bolts, making sure not to overtighten and risk cracking the toilet bowl. If the bolts are beyond repair, don’t hesitate to replace them with new ones. It’s crucial to regularly check and maintain the bolts, as loose bolts can result in water leaks that can wreak havoc on your bathroom floor or the ceiling below.

By staying on top of this maintenance, you can prevent leaks and avoid costly repairs. So, don’t disregard any signs of loose or damaged bolts in your Kohler toilet. Take care of them and enjoy a leak-free and structurally sound bathroom.

Water Woes: Dealing with a Leaky Tank When faced with the telltale signs of a tank leak in your Kohler toilet, swift action is key to ward off water damage. To help you navigate this watery conundrum, here are some red flags to be on the lookout for, as well as steps to pinpoint and resolve the leak. Keep an eye out for water collecting around the base of the toilet, a constant hissing sound, or a perpetually running toilet.

These are all strong indicators of a tank leak . To pinpoint and address the source of the leak, start by inspecting the flapper valve . Ensure it forms a tight seal and isn’t allowing a continuous flow of water into the bowl.

If it’s faulty , make adjustments or consider a replacement. Another possible culprit could be a malfunctioning fill valve. Check if it shuts off completely and make any necessary adjustments.

If it’s beyond repair , replacing it might be the best course of action. If you find yourself unable to tackle the leak solo, don’t hesitate to reach out to a professional plumber . Their expertise and specialized tools will ensure a correct diagnosis and resolution of the issue.

Remember, swift repairs are crucial in preventing water damage to your bathroom floor and its surroundings. Don’t put off addressing a tank leak in your Kohler toilet, as it could lead to costly repairs down the line.

Oh no! Is your Kohler toilet tank leaking? Check out our article on how to fix a leaking Kohler toilet tank for some helpful tips and solutions to get it back in working order.

kohler toilet leaking

Leak from the Base

The Silent Saboteur : Unveiling the Hidden Threat in Your Kohler Toilet In the depths of your bathroom sanctuary, a sinister presence lurks, waiting to strike. Its weapon of choice? A base leak, a seemingly harmless trickle that can unleash havoc if left unchecked.

To uncover this malevolent force, survey the battlefield. Inspect the toilet base for any visible cracks or signs of damage. These telltale marks may hold the key to unraveling the mystery.

But beware, dear reader, for the signs may not always be so obvious. When you flush the toilet or turn on the sink, keep a vigilant eye for water seeping out, a telltale sign of a base leak in action. Once the enemy has been identified , it is time to engage in combat.

Prepare yourself for the arduous task of removing the toilet from its throne. Shut off the water supply, sever the ties that bind – disconnect the water line. Unscrew the bolts that anchor the toilet, and with great care, lift it from its perch.

With the battlefield cleared, it is time to rebuild. A new champion must rise to protect your bathroom from further harm. A wax ring seal, the stalwart guardian, must be replaced.

Align it with precision, ensuring a perfect fit. Tighten the bolts, for they are the sentinels that will secure your victory. Why, you may ask, is this battle of utmost importance?

The answer lies beneath your very feet. The insidious nature of base leaks allows water to infiltrate the sacred grounds of your bathroom floor. Over time, this infiltration can rot the foundation, weakening the structure that supports your daily rituals.

By vanquishing the leak, you fortify your domain, warding off future expenses and prolonging the life of your loyal Kohler toilet.

kohler toilet leaking

Leak from the Fill Valve

The Drip of the Fill Valve Water trickles from the fill valve, a familiar nuisance in many Kohler toilets. This leakage not only wastes water but also poses the risk of potential damage if left unattended. But what exactly causes these fill valve leaks?

One common culprit is a faulty fill valve that fails to shut off completely. This leads to a constant flow of water into the tank, resulting in the sound of running water and a higher water bill. Another possible cause lies in an incorrect water level within the tank, which can lead to leaks around the fill valve.

To identify and address fill valve leaks, here are the steps to follow. After flushing, listen for any lingering sound of water flowing into the tank to determine if the fill valve is shutting off properly. If necessary, adjust the water level by turning the adjustment screw on the fill valve.

Regular maintenance plays a crucial role in preventing fill valve leaks. Make it a habit to clean the fill valve regularly, removing any debris that may impede its functionality. Additionally, inspect the fill valve for any signs of wear or damage, such as cracks or leaks, and replace it if needed.

By diligently following these steps and practicing regular upkeep, you can safeguard your Kohler toilet from fill valve leaks and ensure its optimal performance. Remember, a little maintenance goes a long way in averting costly repairs and conserving water.

kohler toilet leaking

Common Causes of Toilet Leaks – Tabelle

Cause of Leak Symptoms Solution
Flapper Valve Issues Continuous running water, water trickling into the bowl Inspect and clean the flapper valve, replace if necessary
Fill Valve Problems Constant water running into the tank, noisy operation Adjust or replace the fill valve
Worn Out Seals Water pooling around the base of the toilet Replace the wax ring or flange seal
Loose or Damaged Bolts Water leaking from the base or tank connections Tighten or replace bolts and washers
Cracked Toilet Tank Visible cracks on the toilet tank, water leakage Replace the toilet tank
Blocked or Clogged Drain Water backing up or not draining properly Use a plunger or drain snake to clear the blockage
Malfunctioning Flush Handle Difficulty flushing, handle not returning to its original position Adjust or replace the flush handle mechanism
Cracked or Damaged Toilet Bowl Visible cracks or chips in the toilet bowl, water leakage Replace the toilet bowl
Water Supply Line Leak Visible water leakage from the supply line connection Tighten or replace the water supply line
Leaking Toilet Flange Water leakage from the toilet flange area Repair or replace the toilet flange

Repairing the Flapper Valve

A faulty flapper valve in your Kohler toilet can lead to leaks and wasted water. Keep an eye out for warning signs like a continuously running toilet or hissing noises, as these are indications of a flapper valve issue. You may even have to jiggle the handle to stop the water flow.

To resolve the problem and ensure the flapper valve works effectively, follow these steps. Turn off the water supply to the toilet and remove the tank lid. Locate the flapper valve at the tank’s bottom and examine it for visible damage such as cracks or wear.

If necessary, replace it with a new one. Next, adjust the flapper valve for optimal performance. Ensure it aligns correctly with the flush valve seat to create a tight seal.

If needed, you can also adjust the chain length to provide enough slack for the flapper to fully close. To prevent leaks, regularly inspect and clean the flapper valve. Over time, debris and mineral deposits can accumulate and impact its functionality.

Use a mild cleaning solution and a soft brush to remove any buildup. By properly maintaining and repairing the flapper valve in your Kohler toilet, you can avoid leaks and conserve water. Stay vigilant for common signs of a faulty flapper valve, make necessary adjustments for optimal performance, and regularly inspect and clean it to ensure smooth functioning.

Replacing the Fill Valve

Your Kohler toilet is in need of some attention, exhibiting issues such as constant running or inadequate filling. It may be time to consider replacing the fill valve. But how can you determine if it’s truly necessary?

Allow me to shed some light on the matter. Here are a few telltale signs indicating that the fill valve in your Kohler toilet requires replacement. If you find that your toilet fails to fill up completely or the water level appears too low, it could be a clear indication of a faulty fill valve.

Another red flag is the presence of strange noises emanating from the fill valve when you flush the toilet. To safely and effectively replace the fill valve in your Kohler toilet, follow these straightforward steps. Begin by shutting off the water supply and flushing the toilet to empty the tank.

Next, detach the water supply line from the bottom of the fill valve. Unscrew the old fill valve from the tank’s base and securely install the new one by screwing it into place. Lastly, reattach the water supply line.

To ensure optimal performance, it’s crucial to select the correct replacement fill valve. Kohler offers a diverse range of options specifically tailored for their toilets. By utilizing the appropriate fill valve, you can guarantee proper water flow and prevent any potential leaks or malfunctions in the future.

By recognizing the signs, following the outlined steps, and utilizing the correct replacement fill valve, you can effortlessly replace the fill valve in your Kohler toilet, thus restoring its optimal performance. So, fear not, for your toilet troubles shall soon be a distant memory.

kohler toilet leaking

Resealing the Toilet

Banishing Toilet Leaks: Mastering the Art of Resealing In the realm of household nuisances, few things are more aggravating than a leaky toilet. But fear not, for there exists a realm of techniques that can vanquish these watery foes. At the heart of this battle lies the art of resealing the toilet .

1. Seek out the telltale signs of a failing seal, such as mysterious pools of water at the toilet’s base or the unwelcome stench of a bathroom gone awry. These harbingers suggest that the sealant has seen better days.

2. Arm yourself with a sealant specifically designed for the noble task of toilet sealing. This specialized warrior will create an impenetrable fortress, banishing all leaks from your realm.

3. Begin your quest by shutting off the water supply and flushing away any remnants of liquid from the tank. With the aid of a trusty putty knife or scraper, rid yourself of the old, decrepit sealant and cleanse the area with utmost thoroughness.

4. With steady hand and unwavering resolve, apply the new sealant in a continuous, unbroken line around the base of the toilet, heeding the wisdom of its creator.

5. Exercise patience as you await the sealant’s transformation. Let it dry in its entirety before restoring the water supply and embarking on the final quest: the search for leaks. By heeding these ancient teachings, you shall emerge victorious against the insidious forces of future leaks and the potential destruction they may bring.

With the right sealant and these sacred steps, your toilet shall stand as a testament to your mastery, impervious to leaks for countless years to come.

kohler toilet leaking

Did you know that a leaking toilet can waste up to 200 gallons of water per day? That’s equivalent to the amount of water needed to take 5,000 showers!


My name is Warren and I am a professional plumber licensed and insured in the State of California. I have been in the business for over 10 years and have undertaken small and large projects including bathroom renovation, toilets, garbage disposals, faucets, sinks and kitchen plumbing jobs. This site is based on my experience with toilets. I have installed the best brands and models in all sizes and shapes. I hope this helps you with the unbiased information that you need to make the right decision. …weiterlesen

Tightening or Replacing Bolts

In the world of plumbing, a leaky Kohler toilet can be quite the nuisance. The culprit? Loose or damaged bolts .

It’s a common problem with a few possible causes . Over time, regular use can slowly loosen the bolts, while improper installation or insufficient tightening can also play a role. Fortunately, there is a solution .

To properly tighten those pesky bolts, you’ll need to employ the right techniques. Start by locating the bolts at the base of the toilet, then grab a trusty wrench and give them a good tightening. However, be cautious not to overtighten; finding that sweet spot between snug and secure is key.

But what if the bolts are beyond repair? Fear not, for there is still hope. Begin by turning off the water supply, draining the tank, and removing the old bolts.

Then, with newfound determination, replace them with shiny new bolts. Remember to align them properly and give them a good tightening to ward off future leaks. By promptly addressing loose or damaged bolts and using the correct techniques for tightening or replacing them, you can say goodbye to those pesky leaks and keep your Kohler toilet in tip-top condition.

Don’t forget, regular maintenance is the key to a long-lasting and high-performing toilet.

1/4 Tools Needed for Fixing a Leaking Kohler Toilet

In the quest to conquer the relentless leaks of a Kohler toilet, one must arm themselves with the tools necessary for the battle ahead. Here, in this arsenal of essentials, lies the key to victory:

1. The Proper Wrench: A tool that fits with precision, allowing you to loosen and tighten bolts with finesse. With this mighty instrument, the path to the heart of the issue is revealed, granting access to the vital components in need of repair.

2. The Plunger: A stalwart companion, standing ready to face the clogs that threaten to unleash chaos. With a single plunge, blockages are cleared, and leaks are thwarted.

3. The Bucket: An ever-watchful guardian, poised to catch the stray droplets that may escape during the heat of battle. Its presence ensures that the battlefield remains dry, sparing the bathroom floor from the ravages of water damage. Armed with these formidable tools, you shall stand resolute against the leaks that dare to challenge your domain.

Remember, wield these tools with wisdom and follow the sacred laws of repair, for only then shall the triumph of a properly functioning Kohler toilet be yours to cherish.

Step 1: Diagnose the Problem

Identifying a leaking Kohler toilet is the crucial first step towards resolving the issue at hand. Pay attention to these telltale signs: the presence of pooled water surrounding the base, a consistently damp floor, the incessant sound of trickling water, or an unexpected surge in your water bill. To locate the precise origin of the leak, direct your attention towards the flapper valve nestled within the toilet tank.

Should it fail to create a proper seal, water will flow ceaselessly into the bowl. Conduct a simple dye test by adding food coloring to the tank and observe if it infiltrates the bowl without any flushing. Conduct a thorough examination of the fill valve, keeping an eye out for any irregularities such as incomplete shut-offs or peculiar noises.

Additionally, inspect the seals for signs of wear and tear, as well as bolts that may be loose or damaged. Remember, an accurate diagnosis is imperative prior to embarking on any repairs. By doing so, you will effectively address the root cause and prevent any further damage.

Dedicate ample time to this step before progressing forward.

kohler toilet leaking

Is your Kohler toilet leaking? Don’t worry, we’ve got a quick fix for you! In this video, you’ll learn how to replace the gasket/seal on your Kohler toilet to stop that annoying leak. Watch and learn! #toiletrepair #Kohler #leakfix

YouTube video

Step 2: Gather Your Tools

To successfully repair a leaking Kohler toilet, it is crucial to begin by securing the appropriate tools and prioritizing safety measures. Begin by shutting off the water supply to the toilet to avert any potential water-related harm. Next, ensure that you possess a wrench specifically tailored to fit the bolts of your toilet, preventing any inadvertent stripping or damage.

In the event that a clog is the culprit behind the issue, having a plunger on hand can prove beneficial. Remember, when utilizing the plunger, apply steady pressure and establish a firm seal over the drain opening. By adhering to these simple yet essential steps, you will be equipped to effectively rectify the leakage plaguing your esteemed Kohler toilet.

Step 3: Perform the Necessary Repairs

Repairing leaks and ensuring the proper functioning of your Kohler toilet requires some necessary steps. Depending on the type of leak, there are different techniques to address the issue. If you’re dealing with a tank leak, you can replace the flapper valve or tighten the bolts connecting the tank to the bowl.

On the other hand, a base leak can be resolved by resealing the toilet using the appropriate sealant . In case of a fill valve leak, it might be necessary to replace the fill valve altogether. To ensure long-lasting results, it is crucial to use high-quality replacement parts during the repair process.

Using low-quality parts may only lead to further leaks and complications down the line. Once the repairs are completed, it is important to properly dispose of any old or damaged toilet components . This not only promotes cleanliness but also ensures safety.

Refer to your local waste management guidelines to learn about the appropriate disposal methods . By following these repair techniques and using high-quality parts, you can effectively fix leaks in your Kohler toilet. Always prioritize proper functioning and maintenance to prevent future leaks and costly repairs.

kohler toilet leaking

Step 4: Test the Toilet

Before you can trust your newly repaired Kohler toilet, it’s crucial to put it to the test. This will ensure that there are no lingering leaks and that all parts are operating as they should. Begin by inspecting the tank, base, and fill valve areas for any visible signs of leaks.

If you spot any, it may indicate the need for further repairs. Next, take the time to adjust the water level in the tank to ensure proper flushing. Consult the manufacturer’s instructions for your specific model and aim for a water level that sits about an inch below the top of the overflow tube.

Now, it’s time to flush the toilet and closely observe the flushing mechanism. Pay attention to how the flapper valve opens and closes smoothly, allowing water to flow into the bowl and then sealing it off afterwards. Keep an ear out for any peculiar sounds or vibrations that could indicate a problem.

Lastly, thoroughly inspect all the toilet components to ensure they are functioning correctly. Verify that the flush handle is securely connected and operates the flushing mechanism smoothly. Test the refill process to ensure that the fill valve shuts off completely and that the tank refills to the appropriate water level.

By conducting a comprehensive test, making necessary adjustments, and confirming the proper functioning of all components, you can have full confidence in the reliability and leak-free nature of your Kohler toilet.

Troubleshooting and Fixing Leaks in Your Kohler Toilet

    – Flapper valve issues are a common cause of leaks in Kohler toilets. The flapper valve is responsible for controlling the flow of water from the tank to the bowl. If the flapper valve is worn or damaged, it can result in a leak. – Problems with the fill valve can also lead to leaks in Kohler toilets. The fill valve is responsible for refilling the tank after each flush. If the fill valve is not functioning properly, it can cause water to continuously flow into the tank and result in a leak. – Worn out seals can also be a culprit in Kohler toilet leaks. Seals are used to create a watertight seal between different components of the toilet. Over time, these seals can become worn or damaged, leading to leaks. – Loose or damaged bolts can also cause leaks in Kohler toilets. Bolts are used to secure the tank to the bowl, and if they are loose or damaged, water can seep out and result in a leak. – It’s important to identify the source of the leak before attempting to fix it. Leaks can occur from the tank, the base, or the fill valve. – Fixing a leaking Kohler toilet may involve repairing or replacing the flapper valve, fill valve, or seals. It may also require tightening or replacing bolts. – Some tools that may be needed for fixing a leaking Kohler toilet include a wrench, pliers, a screwdriver, and a replacement flapper valve or fill valve. – The step-by-step guide to fixing a leaking Kohler toilet involves diagnosing the problem, gathering the necessary tools, performing the necessary repairs, and testing the toilet to ensure the leak is fixed. – If you are unsure about how to fix a leaking Kohler toilet or if the problem persists after attempting repairs, it may be best to call a professional plumber for assistance. – Preventing future leaks in your Kohler toilet can be done by regularly inspecting and maintaining the flapper valve, fill valve, seals, and bolts. It’s also important to avoid using harsh chemicals or objects that can damage these components.

2/4 When to Call a Professional Plumber

When faced with a leaking Kohler toilet, it is imperative to seek the help of a professional plumber. While minor leaks can be fixed on your own, there are certain signs that indicate the need for expert intervention. One such sign is when the leak persists despite your DIY efforts.

At this point, it is crucial to reach out to a professional plumber. Their extensive knowledge and experience enable them to identify the root cause of the leak and provide a lasting solution. Additionally, if the leak is complex or involves multiple components of the toilet, it is advisable to seek professional assistance.

Plumbers possess the necessary tools for specialized repairs or replacement parts and ensure that the repairs are carried out accurately to prevent future leaks or damage. If your DIY attempts fall short or if you are uncertain about the extent of the problem, it is best to contact a professional plumber . They will assess the situation and provide the requisite repairs to rectify the leaking Kohler toilet.

Remember, overlooking a leaking toilet can lead to further damage and escalate repair costs in the future. Acting promptly by seeking the expertise and assistance of a professional plumber is crucial. So, if any doubts arise, do not hesitate to reach out to them.

If you’re curious about unique toilets, you’ll definitely want to check out our article “Unique Toilets” , where we showcase some of the most innovative and interesting toilet designs you’ve ever seen.

kohler toilet leaking

3/4 Preventing Future Leaks

Ensure the longevity of your Kohler toilet by taking proactive steps to prevent leaks. Regularly inspect and replace any faulty components like the flapper valve, fill valve, and seals. Consider implementing water-saving measures such as a low-flow toilet or dual-flush system to alleviate strain on the toilet parts and minimize the risk of leaks.

It is also crucial to avoid using harsh chemicals that may harm the seals and valves. By embracing these preventive measures, not only will you safeguard against leaks but also extend the lifespan of your Kohler toilet.


In conclusion, understanding and addressing the causes of a leaking Kohler toilet is essential for maintaining a functional and efficient bathroom. By identifying the source of the leak and utilizing the appropriate tools and steps outlined in this article, users can successfully fix the issue themselves. However, it is important to know when to call a professional plumber for more complex problems.

By following the tips and recommendations provided here, readers can not only fix their current toilet leak but also prevent future leaks from occurring. We hope that this article has been helpful in resolving the issue and encourage readers to explore our other informative articles on plumbing maintenance and repair.

Leave a Reply