The product we like is the Laticrete Hydra Ban for waterproofing.

Moisture will always be present behind the tile in a shower. All humidity sensors must be in contact with the gas that they measure. It needs to be someone that does not cut corners and is very knowledgeable about water management in a shower.

The temperature of the surface is measured, yielding a very accurate dewpoint measurement expressed in the International System of Units.

The plates are typically very thin layers of metal, often sputtered onto a base material.

If yes, do I even need one for powder bath (with no shower) and master toilet (which is a small enclosed room by itself), - Is humidity sensor required even with the heater combo? If it comes back within a couple of months, then you have other issues to address.

"Help!

If they don't match, the device disconnects itself and any receptacles it protects from the electrical source. (We also mud the top of shower curbs and the top of any seats/benches that we build into a shower. We can now go into the bathroom and be toasty warm for undressing.

This is not simple. Thanks a million in advance. The seams between the cement boards would be taped and sealed.

In some cases, when the sensor is removed from service for calibration, the contaminants may outgas and the measurement error disappears. pattyl11 - thanks for the links. But doubt in the real world it would work! Tile and grout (even when properly sealed) do not stop moisture from seeping through. Each plate has a leg for an electrical connection. Find out the whys and hows here, High-quality paint alone won't cut it.

Thanks so much Lawrence for pointing me to the right information. master bath ventilation: venting skylight or fan? The tradeoff between the two technologies: users of capacitive sensors sacrifice some performance for price, simplicity and ease of use.

Any suggestions on which switches would fulfill this function?

Sensors from different manufacturers may react differently because of differences in dielectric material or sensor design.

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I decided that with the remodel, the room's supplemental heat needed to come from a different source. If so, choose very carefully the person that you want to fix it. I am hoping some experts here have better suggestions.

If I ever think about moving back to California, someone please slap me. Additional features include a blue LED light to indicate when the fan is on and a matching wall plate for a decora style design. Living in Texas, in the influence of the Gulf weather, I just leave the ceiling fan on 365/7. Once the waterproofing sits for a day, we install the tile and then grout.

There is a timer on the switch, which you can adjust for the length of time you want it to run after it turns on.

What could be easier? If you post back on this thread it will notify us. The most difficult contaminants are chemicals that interfere with or change the nature of the dielectric material.

This requires sophisticated equipment and process knowledge.

I always hate to hear of these type issues. If have top down bottom up blinds the keep the top "open" and bottom "open" some to allow the air to circulate. It works a whole lot better than the heater fan that blew heat down, and has no air movement that cools the wet skin as it also tries to heat the room. If your vanity sits on the floor, you could put a kick space heater under it. We also have seen tile setters that nailed the preslope (the foam type) or the shower pan into place because they didn't understand how to work with it and get it into place (the corners and seats are really difficult).

Q. Anything in the gas that disagrees with the sensor can alter the sensors performance. 3) By far the most common cause of excess water behind tile is improper installation. We keep the door closed now in cold weather because we have a separate heater in the room for supplemental heat.

With this type of construction, any water that penetrates through is channeled down to the drain and the waterproofing does not allow it to seep into the walls and remain.

Well, its not really that easy. We are rebuilding our home and I really like the idea of having bathroom exhausts with heater.

I had Broan heater/light/fans in the past and burned out the heating element several times. After a couple of days, we put several coats of sealer on the tile (if needed) and the grout. So, let's do a quick run-down Q. If it helps you at all, here is a heating alternative that we are loving here at our house.

These contaminants can be sneaky. Plus the model I have also has a motion sensor. But certainly worth investigating. We are in Minnesota in MPLS area. We will be installing a Panasonic inline exhaust fan (http://www.amazon.com/gp/product/B000EDUIX2?psc=1&redirect=true&ref_=oh_aui_detailpage_o03_s00) in the attic space immediately above both bathrooms, and since bathrooms are relatively small (10 x 10), we got a single 240 CFM fan to use with a Y-adapter for the ducts to service both bathrooms with the same fan.

Furthermore, the actual change in the sensors capacitance is quite small over the humidity range of 10 - 90%.

Can be used to comply with ASHRAE 62.2, LEED, CALGreen, and ENERGY STAR 3.0.

It relies on a dielectric material and how that material changes as a function of relative humidity. I have something called a Cove Heater that is electric radiant heat that is run by thermostat and is mounted up near the ceiling and it "shines down" radiant heat that warms objects in the room, silently warming the entire place. pmgzb, I have no personal knowledge of this switch, sorry.

(BTW, it needs to be GFCI connected when installed in the shower - don';t let them skip that step.)

We do not use the Schluter system, but it is also an excellent system that works very well in showers - if it is installed properly. You can buy a DewStop directly from the company itself or from Amazon or hardware stores, Menards, etc. We are having trouble finding timer switches that can be installed in both bathrooms (preferably with humidity sensors) so the fan can be operated with full functionality from both locations. For example, small oil droplets in aerosol form can coat the sensor, forming a barrier that limits water vapor permeability. I hope not, but from your description on a two year old home I think there are more issues. (Just hoping someone gives an answer I am hoping for ;).

What did you do to fix that problem now it is two years after it was posted?

Read the idea of making a shade so tight it acts like a window. The dielectric material can be fooled into responding to substances other than water vapor, and it can drift over time due for a variety of reasons. "What is CFM?"

Never knew about cove heaters. I can't believe they mandated a humidistat.

How does the moisture get there? These are not issues for users, but knowledge of these details might help users understand the differences in price and performance between instruments that appear to be the same.

We are always happy to help, and understand that some of the terms mentioned may be confusing for first-time purchasers.

You can always just install a simple infrared bulb heater.

If it still senses moisture after the time elapses, it will stay on for that period of time again. 2) There are also issues of condensation forming on the back side of tile when showers are on an exterior wall - particularly in homes built before air sealing on exterior walls was required. "What does GFCI stand for?" OR - find plumbing supplies starting with: - usually required for multi-level apartment or housing installations - compatible with all models listed above, - (NOT compatible with OSP70, OE70 or OE80), View complete deluxe "whisper quiet" bathroom fan specifications, View complete humidity sensor "whisper quiet" bathroom fan specifications, View complete adjustable "whisper quiet" bathroom fan specifications, View complete recessed bathroom fan specifications, OD80H Non-Lighted Vent Fan with Humidity Sensor, OD110H Non-Lighted Vent Fan with Humidity Sensor, ODU814H Non-Lighted Adjustable Vent Fan with Humidity Sensor, OEP80 Economy Plus Non-Lighted Ventilation Fan, OEP90 Economy Plus Non-Lighted Ventilation Fan, OEP110 Economy Plus Non-Lighted Ventilation Fan, ODU814M Ventilation Fan with Motion Sensor, Continuous use design is ideal for high humidity or damp areas and helps to consistently reduce moisture, Stylish, contemporary design with or without a light (120V/60Hz power rating is compatible with most homes), Low-maintenance, "whisper quiet", energy efficient motor with effortless snap-in wiring connection for easy installation, Heavy-duty steel housing coated with rust-proof paint and sturdy, easy to clean ABS grille, Permanently lubricated motor provides superior energy-efficient performance with little maintenance, Sensor adjusts from 50% to 100% relative humidity to help reduce moisture during use, Tough polymeric resin grille mounts to corrosion-resistant galvanized steel housing, Brushless two-speed motor offers continuous low-speed ventilation perfect for coastal, humid, or damp climates, Energy efficient, super quiet, permanently lubricated motor provides superior performance with little maintenance, Adjustable humidity sensor from 50% to 100% relative humidity, Corrosion-resistant galvanized steel housing with easy to clean, durable polymeric resin grille, Convenient all-in-one solution for small bathrooms, powder rooms, or tub/shower enclosures (deluxe model only), Built-in lamp offers additional lighting without the need for more fixtures, Energy efficient, permanently lubricated motor and easy to clean grille for low maintenance, Durable galvanized steel housing resists corrosion or damage due to humidity and changing temperatures, Energy efficient, continuous low-speed ventilation helps prevent moisture build-up - ideal for damp climates, Higher motor speed activated by motion sensor so you have better ventilation during showering or other bathroom use, Adjustable timer from 5 to 60 minutes of higher motor speed, Durable corrosion-resistant galvanized steel housing with stylish polymeric resin grill and adjustable (24") double bar hanger system, Super quiet operation from low-maintenance brushless DC motor, ETL and cETL listed for tub/shower enclosures when properly installed and connected to GFCI protected branch circuit, Built-in overload disconnect for safety and longer motor life, Includes detachable 4" polymeric collar with lightweight built-in back draft damper, Recessed design for quiet operation with minimal vibration, Lighted fan offers you excellent moisture control with extra light for small bathrooms, Permanently lubricated, low maintenance, energy efficient motor, Galvanized steel housing with polymeric resin grille is durable and stylish to suit almost any home, Rated for use in tub/shower enclosures when properly installed. https://na.panasonic.com/us/home-and-building-solutions/ventilation-indoor-air-quality/ventilation-controls-switches-3, https://na.panasonic.com/us/home-and-building-solutions/ventilation-indoor-air-quality/ventilation-controls-switches-1, Condensation Sensor Plus FV-WCCS1W Dew Point Sensing, On/Off Wall Control, White Wall Plate Included, The Condensation Sensor Plus is the next generation in moisture control and healthy indoor air technology.

Thanks Nancy! We see showers and/or tub surrounds that are lined with green board (moisture resistent drywall) instead of cement board. What size rectangular undermount bathroom sinks should I shop for?

In any case, I would install the fan as I believe it is necessary in an enclosed space regardless of whether you ultimately need to take further action.

Capacitive humidity sensors are simple. (I'd put it on a timer.). They consist of two plates sandwiching a dielectric material. All sensors have strengths and weaknesses when it comes to contamination, but sorting them out is nearly impossible without direct testing. We are okay with it changing air in both bathrooms simultaneously whenever it's on for one of the two bathrooms, given it's an inline fan directly above both bathrooms anyway and will hardly be noticeable when it's on. Dust can accumulate on the sensor with a similar effect. dchall, sometimes you actually need to remove that moist air from the home, not just move it around. Those Panasonic switches are actually DewStop switches with a Panasonic label slapped on and the price tag to match. I do have a wall switch if I want to turn the fan on or off manually. Unlike competitive units that only monitor humidity levels, the Condensation Sensor Plus features advanced, built-in intelligence that monitors both temperature and humidity actually anticipating the dew point making it the most effective, proactive solution on the market. If the fan and the cleaning/resealing work then you have invested wisely in getting it fixed. Or you can buy a Panasonic brand condensation-sensing switch, which is actually a DewStop switch (not a copy of one, or an upgrade of one, but it actually says DewStop on the switch) and pay a whole lot more for the privilege of saying you have a Panasonic switch. We see showers with no secondary drain or one that was totally stopped up with grout.

Unfortunately, every humidity measurement technology is also subject to degradation due to contamination. In the world of humidity, chilled mirror hygrometers achieve this by controlling the temperature of a surface so that condensation remains in an equilibrium state on that surface. This is the nature of capacitive humidity sensors.

Q.

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It was turning on if anyone was even in the hallway. To change the tub out or not to Change it out?

Tile showers have been around for a very long time, and yet we see only about 20% of showers built in the last 15 years that are done properly. The best thing is to take it one step at a time and see.

The difference in the cold exterior wall and the warmth of the shower wall can cause condensation.

A. GFCI or Ground Fault Circuit Interrupter is a receptacle designed to prevent electrical shock. Read the issues with Anderson Windows http://www.complaintsboard.com/complaints/andersen-windows-rotting-wood-in-the-windows-c652793.html That could be the issue. Glad to hear you love it. The current in the hot and neutral conductors should match.

The photo showing the condensation and ice is the worst could even imagine!

It is a very expensive process to tear out and rebuild.

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Typically when the seal of a window is broken one will see fogging inside the window panes (which cant be wiped off the inside of the windows surface since it is between the windows panes. We changed our bathroom fan to a Panasonic modern fan that has a motion and humidity sensor to help lower humidity. When we chose new FULL Replacement installed windows we went with the newer Triple Pane Soft-lite Imperial windows. Whether or not it causes a problem is dependent upon whether the proper procedures and precautions were followed in the construction of the shower and installation of the tile. This completely ruins the whole shower system - you just created a collander allowing water to seep through everywhere.

Will discuss again with my husband and contractor. A. It is my experience that the infrared bulb heats you up if you are standing under it.

Both the humidity sensor and the movement sensor have the ability to adjust their sensitivity, I believe. Is dewstop a brand? When my contractor said we could eliminate the soffit above the vanity, though, we had room for the smallest cove heater. All motorized exhaust fans have a CFM rating that defines it's capacity to move air. https://www.homedepot.com/p/Panasonic-WhisperWarm-110-CFM-Ceiling-Exhaust-Bath-Fan-with-Light-and-Heater-FV-11VHL2/203762030 - for master which is bigger, https://www.homedepot.com/p/Delta-Breez-Radiance-Series-80-CFM-Ceiling-Bathroom-Exhaust-Fan-with-Light-and-Heater-RAD80L/205088881 - for kids bath that are 8X5. It probably will dry your hair really well, too!

- For California, is humidity sensor really required by law?

That is an interesting idea.

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Is Panasonic a brand you recommend if we do decide to go switch route.

I don't know what any of these terms mean, can you explain them to me in plain English?"

The higher the CFM number, the greater the fans capacity. The cove heater heats the objects in the room, so the whole room becomes warm.

We are remodeling two bathrooms which are side-by-side on the 2nd floor of our home. https://www.ductless-mini-split-air-conditioner.org/.

I couldn't find it with my searches. I cannot find any exhaust with heater and sensor both, so I explored the option of installing sensor separately, but there was none that had even decent reviews.

We did think about an infrared bulb heater (rather preferred it more at some point), but then thought it might look dated.

Let us know how things progress.

Is there something else you are looking for? I have one in my current home and everyone wants to take a shower in that bathroom :), I was planning to use the following that had everything until my contractor told me that legally I need one with humidity sensor (I am in CA where they have special requirements for everything!)

Was a little nervous about any safety issues kick space heater with little kids around etc. First of all, the plates have to be permeable to water vapor or the response time of the sensor would be far too slow.

I did not think I would like this, but since the fan is so quiet, I don't mind it, though in our tiny bath (5' x 8.5', plus the shower to the side), we did turn it so the sensor is not pointed toward the door. I almost went with the infrared bulb heater.

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Keep the HVAC Fan ON, Open the windows blinds to allow the air to circulate during the day. dchall_san_antonio - humidistat and 1.8GPM showerheads just to name a few of crazy CA requirements :) People seem to cheat and work around inspections because of these. The sensor is attached to an appropriate device for measuring capacitance.

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