selecting_windowsSelecting Your Windows

TMC follows Illinois and local building codes and understands the technical requirements mandated to replace windows as well as the design features wanted by architects, homeowners and building managers.

Technical Aspects of Wood Replacement Windows

Design Pressure Rating (DP)

The DP rating is the amount of pressure a window or door is designed to withstand when locked and closed. Each DP rating also establishes other performance factors such as structural and water pressure, water penetration and air infiltration.

The higher the DP number; the better the performance.

DP 40 means that a window is tested to 60 pounds per square inch (PSI) equal to 155 MPH wind and water penetration equal of 8 inches of rain per hour driven by 50 MPH wind. Always check the DP rating of windows!

Low E Glass

For greater performance, choose Low E II with Argon to reduce heat gain in summer and heat loss in winter.

Clad Millwork Options

Aluminum clad brick mould is available in a variety of profiles to match the look of existing windows with a maintenance free exterior. Aluminum clad flat casing is also available as well as a number of thick sill options. Custom profiles for aluminum clad mill-work is also an option.

These tools allow the design of a state-of-the-art window that matches the home or building.

Roll Form Aluminum

Roll Form Aluminum is the process where the window is wrapped in maintenance-free aluminum.

Extruded Aluminum

A thick, tough cladding that far out performs roll form aluminum you might see on other windows. These clad extrusions resist impact and abrasion at installation and for years to come.

Tilt In Sash

Almost all modern double hung windows tilt in for cleaning. This feature eliminates the need for window washers!





Divided Lites

Simulated Divided Lites (SDL) offer traditional style and energy efficiency. SDL bars are permanently adhered to both sides of the glass in many different patterns.


TMC Windows provides window placement for Chicago and the surrounding suburbs including:

Evanston, Wilmette, Winettka, Glencoe, Highland Park, Lake Forest, Lake Bluff, Bannock Burn, Deerfield, Northbrook, Glenview, Hinsdale, Oak Park, Kenosha Wisconsin, Northwest Indiana

Click to request a Free Quote!

TMC Windows, Inc.

8041 Ridgeway Ave.
Skokie, IL 60076

Call us! 847-329-8000