What is condensation?

Condensation generally occurs inside the home when it is freezing outside, and the humidity level inside the house is at a higher level than recommended. When it gets frigid out, the humidity level inside needs to be reduced accordingly to avoid condensation.

Condensation typically develops on cooler surfaces inside the home, such as astragals, hinges, hardware, and glass. These surfaces are cooler because they are closer to the outside than a wall or table, and excess moisture condensates on these surfaces. Moisture in air is known as humidity.


So where is the water coming from?

An important fact to remember is the surface where condensation has formed is not obtaining water from outside the home, nor is it making its moisture; instead, it comes from the environment inside the house. The higher the humidity percentage inside the house, the quicker a cooler surface will begin to condensate. Air temperature, combined with humidity level, defines a temperature at which condensation will form. This is called the Dew Point Temperature. If condensation is developing, then the humidity percentage must be reduced, so the resulting Dew Point Temperature is below the temperature of the cooler surfaces.



Understanding Dew Point and Temperature

For instance, if the air inside is 70° F with 45% humidity, then any surfaces cooler than 48° F (calculated) will condensate. If it’s 15° F outside, then inside surfaces such as hinges or hardware, would be approximately 30 degrees warmer, or about 45° F. In this example, the 45° part temperature is below the 48° F temperature where condensation will happen, and condensation will form. If the humidity percentage is lowered to 30%, then the part temperature would need to be around 37° F (calculated dew point temperature) to condensate.


Think about a glass of ice water with condensation on the outside.

Why is there moisture on the outside of the cold glass, yet the glass is not leaking?  This is because the air next to the chilled glass has cooled to the Dew Point Temperature, and the air cannot hold any more moisture, which will cause condensation to form on the outside surface of the glass.



So what causes moisture in the home?

Moisture in the home can be caused by people taking showers, cooking food, doing laundry, or when a large group of people is in a room together. With closed curtains where air movement is restricted, the air closest to the window remains cool and can also condensate. Elevated moisture levels can also lead to mold and rot in unseen areas of the home. Reducing the humidity percentage inside the home when it’s cold outside usually solves the problem. Higher humidity may not cause an issue when outside air temperatures are 30° and higher, but when the outside temperatures drop below freezing to near zero while maintaining the same inside level of humidity, condensation will be an issue. Differences in inside and outside air temperatures, combined with different humidity levels inside, will determine when condensation occurs. If moisture is collecting on the inside glass, hinges, etc., identify and reduce the cause of the excess moisture in the air. An example of elevated humidity is a fogged mirror in a bathroom after someone takes a shower. The air is in an enclosed space and is saturated with moisture from the shower and then lays on adjacent surfaces that are cooler. Once the door is opened, the excess moisture will mix with the dryer air outside, and the condensation will go away.



This article provided by Provia Doors.

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Window and Patio Door Brands

Window & Door’s annual Top 100 Manufacturers list details North America’s 100 largest manufacturers of residential windows, doors, skylights and related products, based on sales volume. Much of the information comes from companies directly, which our research team verifies and fact-checks. Our team also researches and fact-checks information for companies that do not participate in our survey, which are indicated by an asterisk beside their names. This year’s list further solidified what we’ve been seeing for several years now: the industry is healthy and continues to grow.•



A Pattern of Growth

This year’s survey queried companies if they had experienced measurable growth in the past five years. Only seven companies said no, although 10 responded “unsure.” Seven companies posted revenues that put them in higher categories than in past years.

Year over year, only one company on this year’s list had lower gross sales in 2018 than in 2017. Nearly every other company reported their revenues were higher. The increased sales volume makes sense in the face of 2018 recognizing a 2.8 percent gain in single-family starts, according to research from the U.S. Department of Housing and Urban Development and the Commerce Department.

Remodeling also continues to be a boon for product manufacturers, with the U.S. home remodeling market expanding more than 50 percent since the end of the Great Recession, according to the Harvard Joint Center for Housing Studies,


Strong growth, however, poses its own challenges. Many companies in this year’s list cited “staying ahead of and managing growth” as a top challenge. Growth also requires more people, which aligns with Window & Door’s Industry Pulse survey published earlier this year, which found that 71 percent of survey respondents plan to hire in 2019. Recruiting and retaining those people remains one of the industry’s greatest challenges, as Window & Door continues to explore in its ongoing Workforce Development series.

Costs also continue to climb. Many Top 100 companies attribute this to tariffs and rising transportation costs. (For more information about freight challenges, see In the Trenches.)

Five-year Growth

In the past year, Harvey Building Products saw the biggest revenue category jump from $100 Million to $200 Million to $300 Million to $500 Million this year. It’s been working toward solid growth for several years, though. Since 2016, the company acquired Soft-LiteNortheast Building Products, and Thermo-Tech, all of which Harvey credits for its growth.

Starline Windows moved to the $500 Million to $1 Billion category, up from $300 Million to $500 Million, which the company attributes to a new facility in 2016 that allows Starline to book more projects.

Earthwise Group, meanwhile, shares that in the past five years sales have increased by more than 75 percent and the company hired more than 1,000 new employees. It also launched two start-up manufacturing plants and acquired three others.

YKK AP, one of the largest companies on our list at more than $1 Billion, expanded its production capabilities and moved into a new manufacturing facility totaling more than 500,000 square feet.

Numerous other companies on this year’s list also shared how acquisitions and facility expansions have helped their growth in the past five years.

The Index

More than $1 Billion
  • Andersen Windows & Doors
  • Jeld-Wen*
  • Marvin Windows and Doors*
  • Masonite*
  • Pella Corp.*
  • Ply Gem*
  • Velux USA*
  • YKK AP America Inc.
$500 Million to $1 Billion
  • Kommerling USA
  • Milgard Windows & Doors
  • PGT Innovations
  • Starline Windows
  • Therma-Tru Doors
$300 to $500 Million
  • Alside*
  • Harvey Building Products
  • MI Windows and Doors
  • Woodgrain Millwork*
$200 to $300 Million
  • Champion*
  • Earthwise Group LLC
  • Polaris Windows & Doors
  • Sierra Pacific Windows
  • Steves & Sons Inc.
  • Weather Shield Mfg.
$100 to $200 Million
  • All Weather Windows
  • Atis Group Inc.
  • Boral Windows LLC
  • Cascade Windows
  • Crystal Window & Door Systems
  • Custom Window & Door Systems
  • Four Seasons Solar Products*
  • Kolbe & Kolbe Millwork Co.*
  • Plastpro*
  • ProVia
  • Quaker Windows and Doors
  • The Window Designs Group
$75 Million to $100 Million
  • Air Master Windows and Doors
  • Durabuilt Windows & Doors
  • International Window Corp.
  • Loewen Windows and Doors
  • NewSouth Window Solutions LLC
  • Simpson Door Co.
  • Trinity Glass International
  • United Window & Door Mfg.
  • Wallside Windows
  • Wincore Windows and Doors
$50 to $75 Million
  • Amsco Windows*
  • Anlin Window Systems
  • BMC*
  • Fenplast
  • Lincoln Windows
  • Lux Windows and Glass Ltd.
  • Sunrise Windows and Doors
  • Thompson Creek Window Co.*
  • Vinylmax Windows
  • Viwinco Inc.
  • Window Mart
$40 to $50 Million
  • Croft LLC*
  • Midway Windows & Doors
  • Okna Windows Manufacturing
  • ViWinTech Window & Door Inc.*
  • Vytex Windows
$30 Million to $40 Million
  • Amerimax Windows & Doors*
  • Arcadia Custom*
  • ATI Windows
  • Gerkin Windows and Doors
  • Hayfield Window & Door Co.
  • Inline Fiberglass Ltd.*
  • Mathews Brothers Co.
  • Novatech*
  • RSL Inc.
  • Stanley Doors*
  • Thermal Windows Inc.
  • Tru Tech Doors
  • Win-Dor Inc.
$20 Million to $30 Million
  • Assura Windows and Doors
  • Comfort Windows*
  • Ideal Window
  • Moss Supply Co.
  • Semco Windows
  • NT Window Inc.*
  • Taylor Entrance Systems
  • The Coeur d’Alene Window Co.
  • Vector Windows
  • Vinyl Kraft Inc.
$15 Million to $20 Million
  • Altera Windows & Doors
  • Gilkey Window
  • GlassCraft Door Co.*
  • Interstate Window & Door Co.
  • Kasson & Keller*
  • KV Custom Windows & Doors Ltd.*
  • Kensington HPP Inc.
  • Madero Distribution
  • North East Windows USA Inc./Quality Lineals USA Inc.*
  • Peter Kohler*/Kohltech
  • Solar Innovations Architectural Glazing Systems
  • Sun Windows Inc.
  • Thermal Windows & Doors LLC
Less Than $15 Million
  • Burris Windows
  • Everlast Group of Cos.
  • Seaway Mfg. Corp.





What do you do with your Smart Thermostat when you buy a new home?

Chad Curry recently talked to a home buyer who worried there was something wrong with the furnace in her new house. Every time she set the thermostat to 70º, it reset itself to 80º.

best smart home devices

Some sleuthing finally revealed the problem — the former owner’s new house was cold and he kept trying to get the heat to go on by turning up the temperature using the app on his phone. Unfortunately, it was still connected to his old thermostat in his old house.

As the Internet of Things finds itself into houses via connected devices, more and more homes contain hot new tech gadgets that can all too easily become unlocked digital backdoors.

From thermostats to garage door openers to keyless locks, “people can be vulnerable if they don’t reset these,” said Curry, managing director for technology at the National Association of Realtors.


“It could be something as simple as turning lights on and off and make them think their house is haunted. Or it could be something creepier, like watching through their cameras or locking or unlocking doors,” said Charles Henderson, global head of IBM X-Force Red. He spoke on the topic at the RSA computer security conference Friday in San Francisco.

Like many new technologies, companies have focused on getting their connected devices into stores and into customers’ homes without thinking through the downstream consequences.

“There wasn’t been much discussion of what happens when they sell that device or the house that contains that device,” Henderson said.

That’s how Curry came to work on a project with the Online Trust Alliance to create a Smart Home Checklist for real estate agents. The list isn’t necessarily more user-friendly than the items themselves, however.

For example, one suggestion is that home buyers, “Review the configuration settings for remote access, encryption and update cycles and adjust where needed.”


Smart light bulb, baffled homeowner

What items within a home might have digital interfaces aren’t always obvious.  For example, a house could be equipped with state-of-the-art light bulbs that link to a hub that allows the owner to use an app on their phone to control the lighting.

But there’s no way for a new homeowner to automatically know that. They might not realize that the small box tucked away in a corner allowed someone with the right app to control their lights — so they might not know to ask for information about how to disable or take it over.

“As smart as the light switch is, it’s not smart enough to know it’s been sold,” Henderson said.

The issue hasn’t really become part of the home-buying process. So far only 15% of clients ask their realtors about smart home technology in a house they’re looking at, a 2016 survey from the National Association of Realtors found.


Nest thermostat controls your home’s heating system

While today even the most wired home seldom has more than a connected thermostat, lock and perhaps webcam, “at some point soon we’ll have 30 to 40 devices in our homes,” Curry said. “All of which will be vulnerable if people don’t reset them.”

If the new owner doesn’t get the original documentation for each device, they must find the name and version of each device, then look online to find the relevant documentation so they can know what’s necessary to reset the devices.

best smart home devices

Seeking simplicity

Realtors want to work with the burgeoning Internet of Things world to streamline and simplify this for customers.

State laws differ on what is considered a part of the home and therefore what must stay in a house when it is sold.

In most jurisdictions, fixtures stay with the home while non-fixtures don’t. A fixture is anything that’s affixed to the house. So a Next thermometer that’s installed in the wall is a fixture and stays put while a webcam or an Amazon Echo that sits on a shelf are not.

To be certain, ownership of connected devices in the phone should be added to an addendum to the sales contact so “what stays and what goes” is clearly laid out, Curry said.

Another issue is that many connected home devices require WiFi to work, which is often one of the first things the original homeowner removes when a house is readied to be shown and sold. So, the new owner can’t actually get access to the devices until they move in and install their own WiFi network.

As smartphones became popular, cell phone manufacturers eventually adopted the idea of an easy-to-do “factory reset” because so many users sold or passed on their phones, making it crucial for phone owners to be able to start afresh and protect their privacy.

The connected home device world hasn’t yet gotten to that point, said Henderson.

Curry says his dream would be for each home device to come with a simple user interface and an easy-to-access method for both resetting the user login ID and password that also completely wipes the device of all previously stored data.

Unfortunately, he said, “we’re not there yet.”


So if you have just bought a new home and there is an existing smart device running the home….make sure you reset it!

Article credit:

Elizabeth Weise , USATODAY

Gravina’s Top Infinity Window Dealer in America

Jan 23, 2017 – Gravina’s Window Center of Littleton was honored with the top spot in the Annual Top 10 Dealers award for most sales in the country, at the Infinity Windows from Marvin Executive Forum.  Gravina’s Window Center of Littleton is one of the original Infinity Dealers in the country, dating back to 2004.

gravinas infinity window dealer of the year

As Colorado’s, and now the country’s top retailer of Infinity Windows from Marvin, Gravina’s Window Center of Littleton could not have accomplished this without all our loyal customers. Thank you! And to all our employees, thank you for your hard work and dedication. This demonstrates our dedication to installing the best quality windows at the absolute best value.

“All of us at Infinity Replacement Windows sincerely appreciate our relationship with you and your organization. As family run businesses, we share the same vision of taking care of our customers, our employees, and our communities.

We wish Gravina’s Window Center of Littleton continued success in the coming year, and look forward to working with you to bring homeowners the very best window and door replacement experience.”

Gravina’s Window Center of Littleton has been the number one dealer in Denver year after year for Marvin Windows fiberglass replacement window, Infinity. For 2016, we are the number one dealer in the nation after being number two last year. Thank you to all of our customers and Marvin Windows and Doors.

Congrats to my Dad, Jim Gravina, and his entire team!


Phoenix, Arizona – January 23, 2017

Gravina’s Press Release