Frequently Asked Questions

1. How long have windows been around?
2. What are the components of a window I should know about?
3. What are the criteria by which I should measure new windows?
4. Why should I spend money on new windows?
5. Do replacement windows really pay for themselves or is that just a sales line?
6. Just what are plastics?
7. Are all plastics created equal?
8. Okay, so what exactly is uPVC?
9. Aren't beautiful vinyl windows an oxymoron?
10. What is Low-E?
11. What is condensation and how can I prevent it on my windows?

1. How long have windows been around?


Window-like openings have been found in structures dating from 4000 BC. Sashes and frames were incorporated into the Minoan palaces on Crete, and in atrium houses, windows facing the courtyard were even ornamented. Glass fillings were used by the Romans about 100 BC and finally, large glass panes were successfully manufactured and installed around 1800.
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2. What are the components of a window I should know about?


Frame
Construction materials
Construction technique
Sill design - drainage
Perimeter details
Installation methods
Sash (& Hardware)
Locking system
Construction materials
Construction technique
Hinge or attachment system
Glass
Thickness
Coatings: LowE, Tint,
Resistance to breakage
Optical clarity
Glazing
The final thickness of the assembled glazing & air space
The technique and materials used to create energy efficiency
The sealing system used to assemble the layers of glass
Screen
Construction materials
Construction technique
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3. What are the criteria by which I should measure new windows?


You want to know the ABCs of windows and doors:
How much cold/warm air will leak into my home when the window/door is locked? This rating (A) measures the amount of air leakage through a window.
How much water pressure can my window/door resist? This rating (B) measures the amount of wind force and the volume of water that a window can resist before it will start leaking.
How much wind force is required before my window/door will bend out of shape or break? This rating (C) measures the structural performance of a window or a door.
How much of the heat that I am paying to produce in my house can I stop from escaping)? This rating (U-Factor) measures the heat loss in BTUs per hour per square foot of window/door area.
How much of the sun’s heat will conduct through the glass surface of my new window? This rating (SHGC) measures solar heat gain.
How much noise will resonate through my new windows? This rating (STC) measures by how much the transmittance of sound through a window will be reduced.
How much visual light will come though my window? This rating (VLT) measures the visible light transmittance.
How much UV protection will my windows provide? This rating (UV) shows how much of the ultraviolet light can be blocked out (UV).
How will the window/door be installed? How secure can it be fastened into the opening and how well can it be insulated?

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4. Why should I spend money on new windows?


It’s likely you’re reading about windows for one of the following reasons:
You’re spending a great deal of money on heating your home.
You’re cold when you sit in your favorite chair next to a window.
Your old windows leak air and water.
You found out how much your painter is charging to paint each window.
You just tried to clean a window.
You lifted a window with a broken sash cord and learned how a guillotine works.
Your neighbor was recently bragging about their new windows.

In other words, the money you spend on new windows is an investment in comfort, cost savings, and pride of home ownership.
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5. Do replacement windows really pay for themselves or is that just a sales line?


If you select high-quality, energy-efficient windows you will start saving money the moment the windows are installed. Savings will vary, but expertly engineered and well-built windows lower home energy consumption. Thermal performance of windows and doors can be easily determined. innotech’s products come with thermal performance ratings established by an independent laboratory and validated by an inspection agency as per NFRC requirements. Depending on the new glazing type you choose the heat loss (measured in BTU per square foot per hour) of a new window in comparison to a single pane old window can be up to 75% less.
With vinyl-framed windows, maintenance is also virtually eliminated. No need to scrape and paint windows. These energy and maintenance savings will allow you to recoup your window investment over time.
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6. Just what are plastics?


First and foremost, plastics (PVC and other) are man made. They are synthetic, yet emulate materials found in nature featuring valuable engineering properties. The first synthetic material was a hard rubber caoutchouc. Plastics have evolved from cheap, mass produced materials to a group of highly specialized products capable of solving a multitude of complex and unusual problems. As a matter of fact, plastics manufacturing is an exact science. Some of today’s plastics are engineered to be tougher and more resistant than steel, not to mention they have extreme insulating properties for both heat and cold. We have become so used to plastics in today’s society that we could no longer exist without them. From automotive industry to modern medicine, construction, aerospace, etc., plastics are used everywhere.
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7. Are all plastics created equal?


Definitely not! The beauty of plastics is they can be custom engineered to suit a specific application. A slight change in a plastic’s molecular structure can result in substantial changes to its properties and, as a result, its purpose and suitability. Since not all plastics are the same, just any plastic will not do when it comes to window profiles. Think of the difference between a Tupperware container and a disposable yogurt container and you get the idea. PVC has been in use as a construction material for many years. It is common in pipes, roof gutters, roofing, cable ducting, signs, etc.

The PVC used in Innotech windows is an AAMA-certified compound specially formulated for UV resistance, impact resistance, and color fastness.
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8. Okay, so what exactly is uPVC?


uPVC stands for unplasticised PoliVinylChloride. It is a thermoplastic material made from petroleum by-products, and salt! That’s right, 57% of the total material content is salt! uPVC has much better insulating properties than aluminum and its low energy consumption during manufacturing and long service life makes it both an economical and environmentally conscientious solution.

Innotech windows and doors are built from TROCAL brand profiles from Profine, Europe's largest window and door profile manufacturer. TROCAL has engineered a high impact modified uPVC which is designed for hot and cold climates, along the coast or in polluted urban areas, which does not yellow, crack, or become brittle.

TROCAL’s vinyl extrusions are subject to rigorous in house quality control measures such as:

Every new load of raw material substances is subject to chemical and mechanical testing in the laboratory.
Processing quality is tested on the laboratory extruder.
Prior to extrusion, strips of vinyl are made for colour testing.
Compound testing determines rheological properties (i.e. the flow of the viscous vinyl).
Continuous dimensional testing during extrusion ensures dimensional accuracy.
Microtome sections are taken for examination under the microscope.
Continuous colour testing serves to monitor colour quality.
Xenon-testing is done to test weathering over many years.
In notched impact strength testing, a specimen of the profile is subjected to the ultimate punishment.
Elastic modulus testing serves to monitor flexural and tensile strength.
The Vicat test shows a specimen’s softening point.
Corner strength is determined via crash testing involving breaking of a corner section. (This test is done by TROCAL as well as innotech)
Outdoor weathering tests are performed continuously in many different countries under every geographical climate condition.
AIR, WIND and WATER penetration test are done in-house by TROCAL and innotech on the finished window/door product as well as, for verification, by independent, third party laboratories in Europe and North America.
TROCAL and the hardware suppliers are ISO 9000 certified.

The High Impact Strength uPVC Advantage:

Low cost compared to wood and aluminium (lower initial cost and lower life cycle cost)
Good thermal insulator (reduces heat loss and feels “warm” to the touch for comfort)
Welded joints (for greater water resistance)
Distortion resistant (for tighter fit of framing seals, greater weather resistance and improved sound control)

In Europe, uPVC windows in service of over 30 years have been removed; tested and found to meet original specifications for quality of finish, weather resistance and structural performance. These products can truly be considered “windows for a lifetime”. innotech will provide a Lifetime Warranty against fading, cracking and discoloration for its white vinyl window/door frame extrusions.
See a Cost Comparison of different window frame materials
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9. Aren't beautiful vinyl windows an oxymoron?


Years ago that may have been true. However, today —with the options available and with advances in window design technology—quality vinyl windows are both beautiful and unique. For example, home owners can choose from different color options such as white, solid exterior color or woodgrain finishes; or a variety of muntin bar and STDL (simulated true divided lites) designs; or one of many standard and specialty glazing options.
There are many cheap plastic, low-end vinyl windows available. But the new designs are beautiful, durable, maintenance-free and energy efficient.
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10. What is Low-E?


Low-E is a coating on one of the glass surfaces. It is designed to improve the thermal performance of the sealed unit. Some Low-E coatings will also significantly reduce solar heat gain. Today, there is a variety of coating systems available on the market. Some are better than others but regardless of the brand name any new window should be equipped with Low-E. innotech currently offers Cardinal’s LoE˛-272 and LoEł-366.
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11. What is condensation and how can I prevent it on my windows?


Condensation occurs when the the temperature of a surface drops below the dew point of the air. The dew point is lowest when air is humid, and highest when air is dry. When the moisture content in the air is high, as in swimming pools, bathrooms, and kitchens, condensation can occur even on very energy efficient windows.

Learn more about condensation - what it is and what can be done to control it:

Condensation Control

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