Windows Installation Guide from Gentek

Windows Installation Guide from Gentek

ByHarison Pyykko February 12, 2020

Finding molds, moisture, or leakage on your windows is a huge sign that your windows have to be replaced. These signs might be of small nuances now, but if left unchecked, these could lead to bigger inconveniences in the future.

If you’re thinking of installing a new window or simply replacing your old ones, the Siding and Window Dealers Association of Canada (SAWDAC) has fortunately provided a comprehensive guide on how to do so. When possible, it is recommended to ask for the assistance of a professional. But if you decide to have a do it yourself home maintenance or renovation, below is a guide to doing so, along with some of the most important factors that you need to take note of.

Gentek Windows

Gentek is a provider of window materials that has been in the industry for around 50 years. Gentek is known for its quality and affordability and boasts products like PVC and Vinyl windows. Aside from the windows itself, Gentek also provides assistance in designing and figuring out window color schemes for homeowners. They offer a software to help visualize different combination and designs on top of an actual contractor who will help in determining the materials and other hardware.

Windows Installation

In order to successfully install windows, whether it be for replacement or for an entirely new construction, you must first identify what type of window you are installing. After identifying the type of window, you must at least know the different parts before you proceed to the installation proper. In addition, it is important to double check the size of both the window and the opening. It is recommended to secure at least a quarter of an inch of a clearance between the window and the opening to allow space for necessary adjustments.

The following is a guide to the basics of windows installation:

Types of Windows


It is important to know what type of window you are installing. A fixed window means that it cannot be opened. An awning window is hinged at the top while a hopper is hinged at the bottom. Both types of windows can be swung inwards or outwards. A casement window, on the other hand, is hinged at the side and can only be opened outwards. A single hung window means that only the bottom sash can be opened by sliding it vertically while a double hung means both sashes can be opened.

Parts of a Window

The following illustration presents the different parts of a window that can be used as a reference for windows installation.

Handling of Windows

Windows should be stored on a standing up position (meaning the sill should be the side touching the surface). Windows should be kept away from exposure to sunlight or rain. When carrying or transporting windows, remember to hold them by the jambs or by the sill, and not by the head.

Shimming and Fastening

Shimming would depend on the type of window you’re installing – if it’s a fixed window, a casement window, or a horizontal or vertical slider. To start, you must position and shim the window in the opening. In doing so, you must take note of the following: (1) plumb or the vertical straightness; (2) level or the horizontal straightness; and (3) square or the corners being on a 90 degree angle. Shim every 16 inches on the sill and every 24 inches on the jambs. Make sure that the shims are located four to six inches away from the corners to allow thermal expansion. After shimming, fasten the jambs on the shim locations by screwing. Screws should be placed at 16 inches on the center.

While doing so, it is important to take note of the following: (1) shims should not go on the head (or the upper part of the window) to avoid the header from being deflected; (2) fasteners should not go through sills to guarantee drainage. However, if this cannot be avoided, it can be advised to use silicone on the screw; and (3) to prevent bowing of wide windows (windows size of 65 inches or more), it is recommended to place the fastener at the middle point.

You may refer to the illustrations below for a more detailed guide to installation depending on the window type:

Window Maintenance

Generally, all glass products can be cleaned by wiping them with a mild water and soap solution. However, for better results, you can always opt to get specific glass cleaners. Make sure to use soft cloth and to avoid abrasives as to not damage the glass. When cleaning, make sure to remove dirt from the sills to maintain proper drainage. Window screens can be cleaned using a soft brush while hinges and other moving parts can be maintained by putting oil or lubricants from time to time.