To measure glass for a broken window, you need to determine the exact size of the replacement pane by measuring the opening in the window frame and slightly reducing those dimensions to ensure a proper fit.
Key Steps for Accurate Measurement
Measuring correctly is crucial for ordering a new glass pane that will fit securely in your window frame. The process involves measuring the space where the glass will sit, not the broken glass itself, which may have jagged edges or be incomplete.
Here are the essential steps:
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Measure the Frame Space: Carefully measure the inside dimensions of the window frame where the glass sits.
- Measure the width from side to side.
- Measure the height from top to bottom.
- Ensure your measurements are accurate and taken to the nearest 1/16th of an inch.
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Subtract for Clearance: To allow for expansion, contraction, and ease of installation, the new glass needs to be slightly smaller than the frame opening. As per the reference, you must subtract 1/16 inches from each side of your measurements.
- For the width: Subtract 1/16 inch from the left side and 1/16 inch from the right side, resulting in a total subtraction of 1/8 inch from the measured width.
- For the height: Subtract 1/16 inch from the top side and 1/16 inch from the bottom side, resulting in a total subtraction of 1/8 inch from the measured height.
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Determine Final Glass Size: Use the measurements obtained after subtracting the clearance. These are the dimensions you will use to have the glass cut to the correct size.
Measurement Type Action Based on Reference Final Calculation Measured Width Subtract 1/16" from each side (left/right) Measured Width - 1/8" Measured Height Subtract 1/16" from each side (top/bottom) Measured Height - 1/8"
Understanding the Subtraction
Subtracting a small amount, typically 1/8 inch (1/16 inch from each edge), is a standard practice. This clearance prevents the glass from being too tight, which could lead to breakage due to pressure or temperature changes. It also makes installing the glass much easier.
The Importance of a Dry Fit
Before applying any sealant or putty, the reference advises to dry fit the glass into the frame. This means placing the cut glass pane into the frame opening without any adhesive or glazing compound. A dry fit allows you to:
- Verify that the glass fits correctly within the opening with adequate but not excessive clearance.
- Identify any issues with the glass size before it's permanently sealed, saving time and potential rework.
By following these steps, you can obtain the precise measurements needed for replacing a broken window pane, ensuring a good fit and a successful repair.
