Take steps to put a damper on dampness

Fogged windows are a fact of life, but frequent and lasting condensation on your windows can be a problem. It shows up in two ways. First, too much moisture inside your home encourages your window frame to rot and mold to grow. Second, ongoing condensation can be a sign that your house is not “breathing” properly and needs better ventilation.

Condensation happens whenever warm, moist air contacts a cool surface; we’ve all seen a drinking glass “sweat” on a summer afternoon. In terms of windows, condensation can happen either indoors or outdoors. Exterior window condensation occurs when humid air encounters cool window glass, such as when you run the air conditioner on a muggy summer night and wake up to drippy windows outside. When the temperature drops, the first place you will see any condensation is on the windows.

The bigger—and more common—the issue is interior condensation. As winter comes on, the warm, moist air meeting cold window glass will be indoors. And that can mean water running down your windows and puddling along with window frames and windowsills. Interestingly, large windows may be more likely to show condensation than smaller windows, and so will windows protected from the wind. Also, new windows may have more condensation than old windows because they’re snugger and more airtight. (We’ll get into the ventilation thing in a moment.)

Some humidity indoors is unavoidable and absolutely necessary. Don’t get upset over the occasional foggy window. However, if you regularly have beads of water running down your windows, something could be awry.

Condensation on double-glazed windows. Is it bad seals or indoor humidity?

Before calling for a repair service, try this easy test. Run your finger through the area where the condensation is formed. If your finger gets wet and leaves a trail through the condensation, it’s on the room side of the glass. That tells you that condensation is forming because of excessive indoor humidity.

Consider taking steps if:

➢ The air in your home smells musty.
➢ You see mold, mildew or rot around your windows.
➢ Even after outdoor temperatures warm up, condensation clings to your windows.
➢ You notice damp walls, staining, peeling wallpaper, or blistering paint.

Time to Clear the Air – of Humidity and Pollutants

What to do? First, dry out. Ongoing condensation is a sign your humidity is too high. Lots of things affect indoor humidity—cooking, showering, running a dishwasher or humidifier—even your houseplants. (Plus breathing, as we know.) Other less common contributors are pets, fish tanks, and firewood you might be storing indoors. Note how many of these items are in your home and see what you can do to reduce their impact. If you use a humidifier, for example, try turning it down or running it less often. Use the exhaust fans in your bathroom or kitchen every time you shower or cook, and let them run for 15 to 20 minutes. If you have lots of plants sitting near your windows (so they get sunlight, duh), consider moving them to another spot where moisture from their leaves and potting soil won’t boost humidity near your windows. Also consider purchasing a dehumidifier or a prepackaged desiccant product like DampRid, if simpler measures don’t work.

Then, stir the air.

Good air circulation helps fight condensation. It’s possible your home isn’t “breathing” enough, especially if you’ve got newer windows and have thoroughly insulated and weather-stripped. Today’s airtight and energy-efficient windows may cut heating costs, but they also reduce air leaks, and so seal in humidity and contaminants. The easiest and quickest way to boost ventilation (although it won’t help your energy bill) is by opening the windows a little now and then. Another option is to run your ceiling fans. Stirring warmer air near the ceiling into cooler air near the floor can boost evaporation on your windows.

How Can We Help?

At McCann Windows & Exteriors, we don’t want you steamed up about foggy windows or excess condensation. Let us help you get clear on the best ways to keep you and your home in tip-top shape all winter, especially when it comes to windows, doors and exterior renovations. We’re ready to serve you and estimates are free! Please just give us a call at 847-562-1212 or schedule a free consultation here. We’ll be right over.

Yours,
Kevin McCann

Simple Tips to Keep Heat In, Cold Out

Like getting out of your comfort zone? Good! Winter’s coming. Prep for the polar vortex. While I enjoy a cool breeze on my face as much as the next guy, I don’t like it when the cool breeze is in my living room, coming from a draft. And I don’t like opening energy bills that cause me to say words loudly.

But insulation can help. Insulation is any material used to slow or stop the transfer of energy—whether heat, electricity, or sound—between spaces. Nature’s laws say the heat will always flow from warmer to colder spaces. In your house, that looks like warmth leaking out your roof, walls, or windows in the winter, and as sun battling your air conditioner for control of the indoor temperature in summer. Both can make your energy bills soar.

Fall is an excellent time to evaluate and improve your home’s insulation. While the ancient Greeks and Romans didn’t get energy bills, they still understood that insulation increases the comfort of home. They used natural materials such as stone and cork in their houses, while our pioneers relied on mud, straw, or wood shavings. Depending on its age, your home probably employs some form of natural fiber (such as cellulose) or synthetic fill (such as fiberglass, foam board, or mineral wool) to manage temperature extremes.

Windows, however, are another story. Although glass is relatively inert with poor thermal conductivity, heat still escapes faster per square foot of glass than through any other surface in the home, such as floors, walls, roofs, etc.

So what can you do to keep heat indoors in the months ahead? Here are some choices for insulating your windows.

DIY Options with Caulk and Window Film

Start with the obvious stuff—gaps or cracks in the frames around your windows. Caulk works well here, and it comes in different forms. Rope caulk is actually a super-long string of putty that you unwind and press into cracks with your fingers. Latex or silicone-based caulk comes in tubes requiring a caulk gun to install. While trickier to apply, it’s the longer-lasting solution.

Then there are the windows themselves. If you don’t mind losing your view (say, in the basement or attic), consider sticking bubble wrap to the inside of your window. Spray a thin layer of water on a clean window and push the bubble wrap into place. Then secure the edges with painter’s tape so you don’t mar the finish when removing the wrap in spring.

Plastic window films work the same way, but without impairing your view. Many home improvement and hardware stores sell kits containing double-sided sticky tape and plastic film pre-cut to standard window sizes. On the inside of your home, apply the sticky tape to the window frame; then press the plastic film into place. Heat the film with a blow dryer to shrink it and form a tight seal.

Another option is reflective—or low-emissivity (“low E”)—window film. Again, apply this product directly to the interior window surface. Instead of forming an air pocket, though, low-E window film blocks thermal energy from crossing a reflective surface on the film. This holds in heat during winter and reflects the sun away from your windows in summer, reducing solar gain.

Are Replacement Windows for You?

The most permanent solution, of course, is replacing old, leaky windows with new, energy-efficient ones. If you’re considering this route, here are three factors to weigh.

Window frames. The material surrounding your window contributes to its overall energy efficiency. At one end of the continuum are metal frames, like aluminum, which conduct heat rapidly. This makes them poor choices as far as insulation. In the middle of the continuum are frames made of synthetic materials such as fiberglass or vinyl. Not only are these materials less conductive; they may also come with air cavities or hollows that can be filled with insulation. Best from an insulation standpoint, though, are wooden frames, as long as they aren’t clad in metal, since wood is poor at conducting heat.

Window glazing. Windows today often come with more than one layer of glass, precisely because of the energy efficiencies involved. Double-glazed windows incorporate two panes of glass in the frame, while triple-glazed windows have (you guessed it) three panes. It’s not uncommon for inert gases to be sandwiched between panes for greater insulating properties. (See below.)

Insulating gases between glass layers. Inert gases are substances such as argon or krypton that are chemically non-reactive. Because they are non-reactive, sealing these gases inside double-and triple-paned windows minimizes heat transfer and increases insulation properties. While more expensive, these gas-filled windows also have the best insulating properties.

How Can We Help You Prep for the Polar Vortex?

At McCann Windows & Exteriors, we want you snug as a bug in a rug all winter. Let us help you figure that out by evaluating the fit and energy efficiency of your home’s windows and doors. We’re ready to serve you and estimates are free! Please just give us a call at (847) 892-4071 or fill out our schedule form here. We’ll be right over.

Warmly yours,

Kevin McCann

¹ “Insulation,” Merriam-Webster online dictionary: https://www.merriam-webster.com/dictionary/insulation.

² Mike O’Hara, “The Story of Insulation: A Tale to Warm More Than Your Heart,” accessed Sept. 15, 2019: https://www.insulatekansascity.com/insulation-blog/story-insulation-tale-warm-heart/

³ “Types of Insulation,” Department of Energy, accessed Sept. 15, 2019: https://www.energy.gov/energysaver/weatherize/insulation/types-insulation.

⁴ Sarma Pisupati, “Windows and Heat Loss,” EGEE 102: Energy Conservation and Environmental Protection, Penn State College of Earth and Mineral Sciences, accessed Sept. 16, 2019: https://www.e-education.psu.edu/egee102/node/2017.

⁵ Dwayne Hogan, “5 Ways to Insulate Your Apartment Windows for Winter,” Move.org, updated Dec. 18, 2015: https://www.move.org/5-ways-insulate-apartment-windows-winter/

⁶ Ibid.

⁷ Lee Wallender, “How to Insulate Windows,” The Spruce, updated Feb. 8, 2019: https://www.thespruce.com/how-to-insulate-windows-4159324

⁸ Hogan, “5 Ways to Insulate Your Apartment Windows for Winter”: https://www.move.org/5-ways-insulate-apartment-windows-winter/

⁹ “Window Types and Technologies,” Department of Energy, accessed Sept. 16, 2019: https://www.energy.gov/energysaver/window-types-and-technologies

^1o “Window Types and Technologies,” https://www.energy.gov/energysaver/window-types-and-technologies

¹¹ Ibid.

Wouldn’t it be great if everyone went to bed at the same time as you?

Unfortunately, it’s a 24/7 world—which means your quiet time might be someone else’s a busy time. And that can lead to unwanted noise.

Recently, we worked with a customer who owns a lovely newer townhome. It’s near a rail line; in fact, his bedroom backs right up to the tracks. Noise from passing trains was keeping him, as well as his children, up at night.

He brought us a question: Could we help him make his home more soundproof? It’s not the first time we’ve been asked that. Although his issue was train noise, in other communities customers have to deal with loud street sounds or highway hubbub, or airplanes landing and taking off.

Let’s face it: Noise is noise. And if you can’t relax, you can’t relax.

Finding the Sounds of Silence

Historically, we’ve offered customers two options for noise reduction. One is a window using triple-pane glass; the other is a window with laminated glass. Both offer benefits, but both fall a little short of completely managing sound leakage.

In looking for an answer for this customer, we tried something new, at his urging. This client already had triple-pane windows installed, because that is what had come with the building. So we knew that wasn’t the answer. Fortunately, Pella offers window products with improved noise reduction features. It’s not just the glazing that affects sound transmission; it’s also the window frame. Pella’s Impervia Series features fiberglass frame construction, which deadens sound compared to metal frames. We then ordered double-hung Impervia dual-pane windows glazed with STC-rated insulating glass. Something to note: Each pane in these dual-pane windows is a different thickness. The exterior glass is 3mm thick while the interior pane is 5mm thick. That level of thickness makes a big difference in how much sound the windows stop.

What does that “STC” rating mean? The window industry uses two measures to evaluate sound permeability. One is Sound Transmission Class (STC). The other rating is Outdoor-Indoor Transmission Class (OITC). STC ratings tend to look at higher-frequency noise, which is stuff like human voices, computer equipment, and so on. OITC ratings include lower-frequency as well as higher-frequency sounds. Noise in the lower-frequency band is much harder to screen out, but it’s also the stuff that can feel more intrusive, like construction equipment, traffic, and so on.

Currently, it’s not uncommon to see both ratings posted for a product. The OITC number was designed to classify acoustics in exterior applications, while the STC rating was intended to evaluate interior partitions. So the OITC number is probably going to be the standard number in the future. If you see it, it tends to be a few points lower than STC rating on the same product, but it’s still a good sign.

Silence May Be Golden, But That Doesn’t Make It Expensive

The good news? Ordering and installing these windows was no different than getting regular replacement windows. Having special STC glass in the frames only added a little extra to the price. Otherwise, these noise-reducing windows looked the same, worked the same, and were installed the same as other replacement windows. In other words, homeowners don’t need to make a big whoop-dee-doo if they want to enjoy a higher level of peace and quiet in their homes. The products to help are readily available, no matter where they live.

How Can We Help?

At McCann Windows & Exteriors, we care about the beauty and functionality of your home. We also care about you, and how well your space is working for you and your family. After all, like you, your house should always look and feel great.

Please give us a call if we can be of service. We’re ready to help and estimates are free. We like solving problems such as helping you sleep better at night. Because when you’re a satisfied customer, we sleep better, too.

Please contact us here online (free consultation form) or call (847) 892-4071.