Window Types

Double Hung –

A double-hung window consists of two sashes, one above the other, that raise or lower via a balance mechanism. Both sashes tilt in for convenient cleaning.

Slider –

A slider window consists of two or three side by side sections. At least one of the sections rolls or slides from side to side in a track.


Casement –

A casement window is hinged on one side and opens outside your home with a crank handle.


Bay –

A bay window assembly consists of three windows set at 30, 45 or 90 degree angles, with a larger center section. The whole assembled unit projects outside your home and the interior often creates a seating or display area. 


Bow –

A bow window assembly consists of 3, 4 or 5 windows of the same size that project in a radius. The whole assembled unit projects outside your home and the interior often creates a seating or display area.

Picture –

A picture window has no moving or opening parts. It consists of frame and glass.

Window Aesthetics and Materials

As technology progresses and the need of better performing materials, windows have evolved to provide the aesthetics while performing at energy star standards.

Wood Windows

Wood has been the most popular window construction material for more than one hundred years. Vinylmax’s Sherwood windows combine the efficiency of vinyl with the beauty of wood.

Vinyl Windows

Vinyl is composed of two simple building blocks – chlorine, based on common salt, and ethylene, from crude oil. Vinyl is the second largest selling plastic in the world. It is selected for its durability, ease of installation, easy maintenance and appeal to consumers. Vinyl is strong, durable and resistant to abrasion and moisture. It also can withstand rust and corrosion, is electrically non-conductive and has good fire performance properties.  Vinylmax uses vinyl from VEKA, a world-leader in the production of vinyl extrusions.


Window Performance


Every manufacturer brags about having the best window, and the sales and marketing experts can create a compelling story.  The National Fenestration Rating Council takes the guesswork out of comparing windows by providing industry standards for the most common measures of window performance.

What gets measured and why it matters

The windows you are replacing probably have single pane or dual pane clear glass. Let’s look at what performance standards we measure and how your old windows (didn’t) perform.

Visible Light TransmittanceVisible Light Transmittance (VLT) If we didn’t want light to come through, we would have built a wall, right? The higher the percent, the more light is passing through the glass.

           Single pane – 67%                 Dual Pane Clear – 63%


U-Factor measures how well a product prevents heat from escaping.The rate of heat loss is indicated in terms of the U-Factor (or U-Value) of a window assembly.  The lower the U-Value, the greater the window’s resistance to heat flow and the better its insulating value.

       Single pane – .83         Dual Pane Clear – .46

Solar Heat Gain Coefficient (SHGC)Solar Heat Gain Coefficient (SHGC) Solar radiation, whether directly transmitted or absorbed and re-radiated, can make a room too hot.  The lower a window’s solar heat gain coefficient, the less solar heat it transmits.

        Single pane – .67         Dual Pane Clear – .62

UV BlockUV Block Invisible, yet harmful, ultraviolet (UV) rays found in every day sunlight can damage paint finishes and cause furniture, carpet and window treatments to fade. The higher the percent, the more harmful UV rays being blocked.

       Single pane – 29%         Dual Pane Clear – 39%

Air LeakageAir Leakage  (AL) is indicated by an air leakage rating expressed as the equivalent cubic feet of air passing through a square foot of window area (cfm/sq ft). Heat loss and gain occur by infiltration through cracks in the window assembly. The lower the AL, the less air will pass through cracks in the window assembly.

                                         Values vary with window construction

Condensation ResistanceCondensation Resistance (CR) measures the ability of a product to resist the formation of condensation on the interior surface of that product. While this rating cannot predict condensation, it can provide a credible method of comparing the potential of various products for condensation formation. CR is expressed as a number between 0 and 100. The higher the CR rating, the better that product is at resisting condensation formation.

                                        Values vary with window construction


Window Value


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