Findings Judy’s Shower Leak
By Jerry R. Spumberg, The DIY Coach
Dedicated to Judy Frankel of NJ101.5 FM for the idea
On Tuesday, March 20, 2012, I was driving back to my office from Toms River, New Jersey and was listening to the Judy and Dennis show on NJ101.5 FM Radio. (These two are such great fun that they make the driving go by so much quicker.) The co-host, Judy Frankel, was telling Dennis about a hard-to-find shower leak that neither a plumber or handyman could find. Because Judy had become so frustrated in her failure to find someone to solve the problem, she had given up. I could almost imagine her setting up buckets every time somebody wanted to use this shower. I thought, as I was driving, it would make a great article for Remodeling Reports. I have spent a good part of my career as both a Licensed Plumber and Builder solving issues such as these and want to share what I have learned with the visitors to our websites and especially Judy, who makes my driving so much more enjoyable.
To begin with, Judy don’t give up! Here’s why. Water damage to homes is a major issue. It can cause the destruction of wood through rot, delaminate plywood subflooring to failure, attract wood destroying insects seeking moisture, and contribute to conditions favorable to growing mold. Even intermittent water problems over time may cause substantial damage that ends with the deterioration of ceilings, walls, and floors to the point of structural failure and expensive replacement. The cause of your leak may be found by using this investigative procedure.
I believe, from your conversation with Dennis, that the water leaking takes place under one or both of the following conditions: (1) it happens when it rains, (2) when someone is showering, or (3) both at the same time. I’m not sure whether you have a tub with a shower or just a shower. I also don’t know if you have a shower door, glass tub enclosure, or use a shower curtain. However if you follow my method, it will take all these situation into consideration to determine the cause.
First, let’s deal with the water when it rains. In most cases, a vent pipe from the drainage plumbing system for your bathroom exits your roof. The purpose of this pipe is to release sewer gas pressure and to prevent the siphoning of traps. There is a pipe flashing that is woven into the roof shingles to seal the exterior of the pipe and prevent storm water from following it down into a home. If the flashing is damaged, deteriorated, or in need of caulking (sealing) where it meets the pipe, this is often the cause of water infiltration during storms. The second most reasonable cause is easily understood once you recognize the following: The vent pipe passes through the roof wood sheathing through a hole that is somewhat larger than the pipe. This is the reason for the use of the pipe flashing mentioned above. If the roof is worn and nearing the end of its servable life and /or there are other flashing issues, water may be leaking under the roof and running into the penetration that was made for the vent pipe. Resolving both issues would require going up on the roof to inspect the items mentioned above. Also, a look into the attic above the bathroom and maybe the use of a hose on the roof while another person is in the attic with a flashlight will reveal a problem. Caulking or replacing a pipe flashing is a relatively inexpensive repair, if that’s the cause. If it is that something else as mentioned above, that will have to be solved by a roofing repair specialist.
Having addressed the infiltration of storm water into the house, there is one more thing to check in the attic if the bathroom has an exhaust fan. It is important that the fan is properly installed and exhausts to the outside of the house. If it isn’t, there can be significant moisture buildup in the vent pipe or the attic above which could cause water leaking below. Just think about the condensation dripping from your car when using the air-conditioned. If you exhaust the bathroom air by opening up a window, we then move on.
Plumbing is actually two separate systems that work together to supply potable water and removal of waste. It is important to remember this because we want to avoid the interconnection to each other for health reasons and to realize that either or both can be the cause of a leak.
So let’s begin with the potable water system which operates under pressure. I’m talking about the hot and cold lines. If the leaking takes place only during the use of the water during showing, we know that there are no leaks up to the shower valve when water is shut off. The next step is to remove the shower head. The same is true if there is a tub spout. I then cap off both lines. In doing this, I normally remove the shower head [sometimes the arm if it is the ball type and replace it with a nipple] and install a valve with a hose connection. Having done that, I will shut off the just installed valve. I then remove the shower [or tub and shower] trim and handles so that it exposes the shower valve and stem seals and turn on both hot and cold water. (If you don’t have the instructions for your particular shower valve you can find them on line.) This gives me a chance to see if there are any leaks coming from the connecting pipes to the shower head [and/or tub spout] and the valve body itself under pressure. If nothing shows we begin the next step. If a leak appears, we do whatever is needed to repair it. One note here: It is not unusual for water to leak between the tile and the shower valve or tub spout trim. When removing it, if I suspect this is the case, I will seal up the penetrations through the tile before reinstalling the trim. In some cases I use a bead of clear silicon caulking under the trim. Not too much because if the trim ever has to be removed for a valve repair, I don’t want to have a permanent glued-to-the-wall problem.
The next step is to test the drainage system that is hidden. I connect a rubber hose directly to the drain in the floor so that the floor of the shower or tub does not get wet. I then turn on the water and let this run for a while (about the same time a person uses to take a shower). If a leak shows, I know it’s in the waste plumbing below the floor. If not, we go to the next step.
I disconnect the hose and insert a test plug into the drain to seal off the waste. I will then flood the pan with water to a point just below the threshold or the beginning of the wall tile. If it is a tub, I will fill it to a point a few inches below the overflow. If a leak shows here, I know I have to repair the seal on the drain connection. If nothing shows I go to the next step if it is for a tub. This requires that I fill the tub past the overflow to see if that could be the problem. In this case, that would only be a problem if someone was taking a bath and they overfilled the tub or overflowed it when getting in. It would not cause a problem from showering. No leaks, next step.
Before I go further, I want to spend a few minutes talking about showers that have a tiled floor. In most cases when you have a tiled floor, even up until the early eighties the tile was placed in cement into a custom box made out of lead. Plumbers normally did this work known as panning and so the name shower pan. When properly built with heavy lead sheathing it was folded out of one piece into a box and the drain attached. It then received several coats of asphaltum paint. When done correctly the pan would have a life of about 50 years or more. Very often it was not built correctly and could have a much shorter life. Back in the late seventies, we began to replace lead with other materials that were much safer to our water supplies and could last longer. However there are many reasons for shower pans to fail, some being the original builder’s skill and some being what happens to homes as they age. The unfortunate thing for you to understand is that is if this is the problem, the only solution may be to remove all the tile on the walls and floor within the shower and reconstruct the shower from the floor up. So I hope this is not your problem.
The next step. Once the leaking of water from the operation of both plumbing systems is eliminated we are left with the tile or wall surrounds within the wet area, the containment of water within the wet area through the use of glass enclosures with doors or shower curtains, and the bathroom floor area located outsidw the shower and tub area.
When addressing the wet containment area within the shower or tub, I use my knowledge and experience to determine the condition of the area. I look for areas where the walls of tile meet the [receptor] shower base or tub. First to see if where they meet is caulked with a durable material such as silicon and that it hasn’t deteriorated over time. I also look to see if the surfaces are pitch away from the walls toward the drain. The next thing I look at is where walls meet at inside corners. These areas move seasonally and are more in need to be maintained on a seasonal basis and should be caulked rather than grouted. I then look to see if the grouting between the tiles is sound or hasn’t been maintained. Finally, I will press on the walls to see if I can feel any weakness in the underlying substructure under the tile that could be from moisture that has gotten past the tile and has deteriorated the subsurface. Having made a visual inspection and making an assessment of the conditions, I proceed to my final steps.
Note: Grouting and caulking requires a semiannual maintenance inspection. Depending on how often the shower is used, type of grout and caulk installed, the tile could require more frequent attention. My wife and I are only two. I replace caulk and fill grout about every two to four years in areas where needed. This does require the removal of the old, cracked or lose material.
If still no leak, I place a six foot stepladder into the shower or tub wrapped in a plastic tarps or old shower curtain to mimic a person taking a shower. I place towels tight against the tub and shower where they meet the floor outside. This makes sure that any water that might go onto the floor is absorbed by them. I carefully turn on the shower so that it’s at a volume that a family member would use. I observe how much water, if any gets out of the confined area. If there is a leak at this point, I can make a reasonably accurate determination, but not perfect as to why a client has a leak. If there is no leak after running the shower the maximum amount of time a family member uses it, I then remove the towels on the floor. I then observe if any water is getting on the floor and leaking through.
As I move along this logical progression, most times I will understand what is leaking and what is not. If it’s been a sustained leak and can be easily eliminated by repairing or caulking, the decision to investigate further to ascertain extent of damage by water is left to my client. After explaining the pros and cons, I give them my opinion as if it was my own home. If the solution requires a more extensive remedy, we discuss that as well.
I do own a pencil camera inspection scope which can give me the ability to look into areas by only opening a small hole. However, in most cases the best way to examine an area is to remove the ceiling under the shower so that you can assess the water damage as well as fix the leak. After the repair is completed, leaving it open allows us to make sure the repair is permanent before replacing the ceiling.
To sum it all up!
Finding what the cause of what some home repair problems are requires a person who understands how the various parts of a home work together to form a system and have learned through experience what can go wrong and has a sound approach to diagnose and resolve the issue. This not only applies to specialty trades such as plumbing and electrical, but to builders and remodelers. Not every plumber or electrician is good at repairs and neither is every builder or remodeler.
The solutions to resolve the problem when using best practices may be more costly than a quick fix, but in the end you will spend less over the years than the quick fix. Finding what is leaking has not been a problem for me or knowing the best course to take for the client. What is a problem that can get worst when not attended to is the cost of the correction.
May the Coach be with you on your next project.
(Note: This article with photos will be added to our www.RemodelingReports.com site shortly.)