• How Does Window Defogging Work?

    The Process

    The window repair is carried out onsite and does not require removing the glass from the frame. You can be assured that there is no dust or mess. Much of the work is done from the outside but on occasions we may need to operator from inside. The repair requires the installation of a micro valve on the surface of the glass over a 3mm hole. This valve is discreetly positioned in the corner of the window. The result is a clear window.

    The thermal pane window behaves like a miniature greenhouse. Air between the glasses expands and contracts with the temperature of the sunlight. This in turn pumps air in and out of your windows. The window seal is semi-permeable and therefore not actually hermetically sealed. During the manufacturing of the windows water absorbing desiccant pellets are placed in the rim Spacer bar. This desiccant in the spacer bar prevents moisture from the hitting the glass portion that we can see after time these pellets become saturated and the excess hit the window portion that we look through.

    Our process will permanently solve the problem. The sooner the window is repaired, the better the results because the water will eventually leave permanent stains. All standard windows can have the moisture removed. However, if the unit has been wet for a long time, mineral deposits may have formed on the inside glass surfaces. The glass may have some water spots caused by weather. If mineral deposits have been on the glass for an extended period they may have etched the inside surface of the glass. This is a permanent condition that, so far, cannot be restored.

    How does BCTWR restore the windows? Our trained technicians arrive equipped with specialized tools and equipment. All service work is done on site, with a minimum of disruption and disturbance. Glass units are most often serviced from the exterior. Our technician will inspect each piece of glass individually and advise the customer of the condition and expected results after restoration. Using a specially made high speed diamond drill with lubrication, two to four very small holes are drilled in the outside glass in the corners. All service work is done through these holes.

    Our micro vents allow the air pressure and humidity to equalize between the interior of the glass unit and outside. This prevents moisture from accumulating inside the unit again and has been recognized and proven as the solution to moisture between panes of glass for many years. Our restoration process is a modern adaptation of proven technology and is the permanent solution to the problem of failed insulating glass units.

    So give us a call today!

  • BCTWR is one of the original

    BCTWR is one of the original and the only currently operating window defoggers of Western Canada. BCTWR has been repairing and replacing failed windows since May 2005. In our 10 years in business we’ve been able to restore 85% of the windows undergoing the defogging process with the success of keeping them dry.

    We have also maintained our A+ rating with the Better Business Bureau since our beginning in 2005.

    If we cannot drill dry vent you windows we can replace them at a great price. A couple of reasons why we cannot drill, dry, vent include the windows being too badly stained, or the seal failure is greater than the valves can handle. Tempered safety glass cannot be drilled as it is heat stressed and will shatter upon drilling

    “Did you know that the window replacing industry standard is to mark up glass by 300%”

    We have no costly office, receptionist, marketing department or shop overhead. Simply Stated BCTWR stands for prompt estimates. We know that quality workmanship and material along with reasonable prices are a “given” in today’s market.

    For almost a decade, we have surprised the public by removing moisture and restoring their windows while saving them money! We offer complete window restoration including moisture removal, replacements and our best value package, preventative maintenance. Our unique process removes the moisture from thermal pane windows.

    BC THERMAL WINDOW RESTORATION INC. can solve your foggy window condensation problems at a fraction of the cost of installing new windows. We have finally found an alternative to window replacement! Scott was among the first five people trained to “Defog” in Western Canada and the only one operating in the area.

    All other people trained at this time have either moved on to other business ventures or are defogging out of British Columbia.

  • Condensation

    Window Condensation

    Each winter we see more and more homeowners vitally interested in solving window condensation. Window condensation is not a happy interest because of bad experiences, which range from irritating to downright expensive. It may strike you as odd, but the growing condensation problems of the nation are caused by progress. If you have trouble with window condensation, it’s probably because you live in a “tight” modern home that you can heat for a fraction of the money it took to heat the house your parents lived in—a home that’s cleaner and more comfortable besides!

    Your condensation problems also result from use of labor saving appliances that make life easier than it used to be. This article explains the moisture problem of the “tight” home. It offers suggestions for curing condensation problems in existing homes and provides additional suggestions for you who are planning a home. You unquestionably will build a “tight” home, and there are more things you can do to prevent excessive moisture when you build than can be done in a home where the problem already exists.

    What Causes “Trouble” Condensation?

    A little fog on the lower corners of your windows now and then probably doesn’t bother you. By the time you’ve thought about it a second time it has usually gone away. But we are talking about excessive condensation. Condensation that blocks the whole window with fog or frost. Water that runs off windows to stain woodwork, or in serious cases even damage the wallpaper or plaster. If you have this kind of condensation on your windows, you have good reasons to be concerned and a good reason to act. Don’t worry so much about the windows where you can see the effect of excess humidity. You should worry more about what excess moisture may be doing elsewhere in your home. It may be freezing in the insulation in your attic where it will melt and damage your plaster exactly like a roof leak when warm weather comes.

    Or it may be forcing its way out through siding to form blisters under your exterior paint. That means the most expensive kind of a paint job. It’s easy in such cases to blame the paint, or the insulation, or the windows, but it’s wrong to blame them. The real villain is invisible. It’s water vapor. The best, and usually the only way, to prevent this trouble is to get rid of excess water vapor. Once you’ve equipped your windows with good storm windows, there isn’t very much more you can do to the windows to kick condensation.

    What Is Humidity?

    Humidity, water vapor, moisture, and steam are all the same in that they are each a form of water. Humidity is an invisible gas. It is present in varying quantities in nearly all air. This moisture in wet air tries to flow toward drier air and mix with it. Scientists describe this force as “vapor pressure.” It is often a very powerful force indeed. It can act independently of the flow of the air which holds the moisture. Vapor pressure can force moisture easily through wood, plaster, brick, and cement—right through most of the materials we use to build our homes. That is exactly what happens when moisture seeks to escape from the humid air usually found inside your home to the drier winter air outside.

    More moisture trapped in less space certain building materials stop water vapor. Glass is one of these. Also on this list are some varnishes, paints, tiles, and plastic wall coverings. Vapor-seal insulation is designed specifically to stop the escape of water vapor and protect the insulation and your walls from the ravages of water. Increased use of these “moisture trapping” materials in the last few years has created the modern “tight” home. Moisture created by bathrooms, kitchens, laundries, and occupants no longer flows easily to the outside. The modern insulation and construction that keep cold air outside also keep moisture in, so it is very easy to build up excessive and even harmful moisture levels in such a home. American Builder magazine calls the problem a combination of many causes that build excessive moisture in the modern home. First, more washing, more bathing, more showers, more appliances, and more gas furnaces all pour more water vapor into homes than in former years.

    For instance, cooking for a family of four adds 4.5 lbs. of moisture a day to a house. Each shower contributes half a pound, a weekly laundry 30 lbs., human occupancy 6 to 8 lbs. per day, dishwashing 1.2 lbs., etc. All of this moisture must eventually escape from your home. So you see that the modern living of a family of four can easily release 150 pounds, or more than 18 gallons of water per week into the air in your home! And houses with no basements have further moisture problems. Increased production of humidity is only part of the story. Houses generally have been growing smaller, which means an even greater concentration of water vapor is trapped by modern tight construction. It means more moisture contained in less space. There is no wonder we’ve created a condensation problem for ourselves.

    How to reduce humidity in your home:

    1. CONTROLLING SOURCES OF HUMIDITY: For instance, venting all gas burners, clothes dryers, etc., to the outdoors. Use of kitchen or bathroom exhaust fans.

    2. WINTER VENTILATION: Because outside air usually contains less water vapor, it will “dilute” the humidity of inside air. This takes place automatically in older houses through constant infiltration of outside air.

    3. HEAT: The process of heating your home will reduce the relative humidity, providing it’s dry heat. It will counter-balance most of all the moisture produced by modern living.

    Here is 7 Practical Steps to Control Condensation Here, arranged from easy to more difficult, are the steps you should take to reduce condensation on your windows.

    1. Install storm windows or replacement windows with double or triple glazing.

    2. Shut off furnace humidifier and any other humidifying devices in your home.

    3. Be sure that louvers in attic or basement crawl spaces are open and that they are large enough.

    4. Run kitchen or other ventilating fans longer and more often than has been your custom.

    5. Open fireplace damper to allow easier escape for moisture.

    6. Air out your house a few minutes each day. Air out kitchen, laundry and bathrooms during use or just following use.

    7. If troublesome condensation persists see your heating contractor about an outside air intake for your furnace; about venting of gas-burning heaters and appliances; or about installation of ventilating fans.

    If the common remedies we suggest (number 1 through 5) don’t work, you REALLY have a condensation problem. But the changes your heating contractor may recommend to further reduce humidity in your home should not be very expensive. Certainly they will be less expensive than a big paint job caused by excessive water vapor!

    The basic principle of reducing window condensation is extremely simple. When there’s too much condensation on your windows, it means that humidity is too high in your home. You should take necessary steps to reduce humidity until condensation disappears. But in practice, window condensation and reducing humidity may become very complicated because a score or more of entirely different conditions may affect the way the condensation problem works out in different homes. Let us just mention a few:

    • The number and types of windows in the home.

    • The type of double glazing system on the windows.

    • The heating system—hot air or water—perimeter or interior wall heating.

    • The type of insulation and vapor barrier.

    • Even the type of soil and quality of drainage.

    Windows Condensation is visible evidence of excessive moisture in the air. It may appear as water, frost, or ice on the room surface of windows and doors. The warmer the air, the more water it can hold. This means that the air in the center of any given room will hold more water than the air adjacent to the window or door walls, since this area is always colder. When the warm moisture-laden air moves toward the cooler window or door wall, it becomes cooler and could not hold the moisture it held when it was warmer. Therefore, the moisture is dropped and appears as water on the glass and frames of windows and doors. This occurs more frequently during the winter months, because of the extreme difference between the inside and outside temperatures. If you wish to avoid condensation during the winter months, when the average outdoor temperature drops to 35 degrees or less, it would be wise to maintain a 25 to 35 degree relative indoor humidity. Ventilation is a very effective way to remove excessive moisture from the air, which is why old poorly insulated houses with single glazed windows often times do not have condensation problems. This is because the air is changed by infiltration around the windows, vents, and other openings. Newer homes which are constructed to meet current insulation standards and energy conservation requirements; or older homes which have been newly insulated through the addition of added attic or basement insulation and installation of prime windows with dual or triple glazed glass, are now so air tight that they present a new problem.

    All homes will on occasion have temporary condensation, which is the result of one of three occurrences:

    1. New construction or remodeling. Building materials contain a great deal of moisture. As soon as the heat is turned on, this moisture will glow out into the air and settle on the windows and so on. This will usually disappear following the first heating season.

    2. During humid summers, houses absorb moisture. This will be apparent during the first few weeks of heating, and then the house should dry up.

    3. Sharp, quick, and sudden drops in temperature, especially during the heating season will create temporary condensation problems. If you have an existing moisture or condensation problem, do not count on correcting it merely by installing new windows. Windows do not cause condensation; therefore, windows cannot cure condensation. However, an energy efficient vinyl replacement window with Super Spacer warm edge technology, Argon gas, and Low-E glass helps to greatly reduce condensation.

    Because of so many variables, a condensation problem can sometimes be very tough to solve. That’s why we recommend that you put an expert to work on your problem if the simpler steps to reduce humidity don’t solve your condensation problem.

  • What Causes Foggy Windows?

    What Causes Foggy Windows?

    Double (and triple) pane glass windows are energy efficient but can become foggy windows over time. The rubber seal surrounding the two layers of glass can loosen, allowing moisture to seep through and become trapped between the layers. Even just a pinhole break can create foggy windows. Windows, by design, are all destined to fail much the same way light bulbs are expected to burn out eventually. Thermal pane windows are made with eventual failure in mind due to the natural occurrence of a phenomenon called solar pumping.

    What is Solar Pumping?

    Solar pumping naturally occurs on a daily basis when sunlight heats and pressurizes the inner airspace of the window cavity during the day. This forces small amounts of air out of the window cavity through the semi-permeable seal. When the temperature drops at night, the window cools and lowers pressure in the window cavity which draws air back inside. Over time this daily ‘breathing’ process allows moisture into the window cavity which gets absorbs by the windows Silica desiccant material (moisture absorbing material installed during window manufacturing to prevent fogging). After the desiccant material becomes saturated, the excess moisture has nowhere to go except on the surface of the glass. Another foggy window is born! In a large majority of the clients we work with, the foggy window situation is the result of the window coming to its intended useful life span. We typically restore windows that are 10 to 12 years in age, depending on the quality and intended life span of the moisture absorbing desiccant material inside the window cavity. Other variables like climate, air humidity and window position in relation to the sun also affect the likelihood of foggy windows.

    The Risks of Prolonged Foggy Windows: If moisture is allowed to continue collecting through the process of solar pumping, there are a few risks you should be aware of. Eventually the windows become permanently foggy, leaving deposits, strains and mold. Unfortunately, we won’t be able to restore the window after it gets to this point.