Measure the distance vertically across your frame from top to bottom on the left, middle, and right side of the window from head jamb to the window sill. Circle the smallest measurement of the three figures, this is your rough opening height.

How do you measure rough in for a window?

Quote from the video:
Quote from Youtube video: One at the top one in the center and one at the bottom measuring from face of stud to face of stud. Circle the smallest measurement. This is your width size next measure the height of the openings.

What is the rough opening for a 36 by 36 window?





Rough opening for a 36×36 window:- a 36″’×36″ window is represented as 36″ wide and 36″ tall, so, for a 36″×36″ or 36″ by 36″ or 3’×3′ wooden window, you will need rough opening to 2 inches wider & 2″ taller than the actual window size.

How do you measure the width and height of a window?

How to measure a window

  1. Width. Using a tape measure, measure the width from the inside of the jamb on one side of the window to the inside jamb on the other side of the window; the jamb is one of the vertical fixed-frame pieces on each side of the window frame. …
  2. Height.


What is the rough opening for a 32 inch window?

Typically when framing a window the rough opening for a wood window frame should be sized 2 inches wider and 2 inches higher than the window itself. For example, a 30 inch wide, by 36 inch high wood window, would require a rough opening width of 32 inches and a height of 38 inches.

What is the rough opening for a 24×36 window?





24×36 Window: Specifications

Rough Opening Dimensions 24”W x 36”H
Frame Height 23-1/2 inches
Frame Width 35-1/2 inches
Frame Depth 3-1/4 inches
Frame Material Vinyl/Aluminum/Wood…

How do you size a window opening?

Measure from the high point of the sill of your window (the surface closest to the inside of the window) to the top of the window opening. Make three measurements: one at the left side, one at the center and one at the right side of the window. Use the smallest of these three height measurements to order the window.

How do you measure a rough opening for a replacement window?

Measure the width across the bottom of your window opening between the inside faces of the framing on each side. Measure the height of the opening between the bottom of the header and the top of the sill on the left, right, and center of the opening. Measure the thickness of the flashing needed.

How much gap do you leave around a window?

Gaps around windows – the essential information

Material Recommended gap between frame and masonry for sealant (mm) Frame size: less than 1.5m 1.5 – 3m 3 – 4.5m
Timber 5 5
White uPVC 5 7.5
Wood-effect uPVC 7.5 11
Composite materials 2.5 7.5

What does rough opening mean for windows?



A rough opening refers to a framed opening for your planned window. It has a header across the top, a sill plate across the bottom, and vertical trimmers on either side.

How much bigger should rough opening be for a window?

Recommended rough opening is between 3/4″ (19mm) – 1″ (25mm) larger than the window width and height. Ensure that the rough opening is plumb, level and square, and the walls in the opening are not twisted. a) 1 1/2″ (38 mm) solid blocking is required at the sill and sides of the opening.

How big should a rough opening be?

Framing rough opening sizes are really quite simple. Just add 2″ to the width of the actual door size. You should add 2-1/2″ to the height of the actual door. This will give you room to space the door frame off of the sub-floor.

Does window size include frame?



Just remember that vinyl or aluminum window measurements include the entire unit — glass, frame and sash — while wood window sizes go by the measure of the glass. You’ll have more visible glass in a three-foot wood window than a three-foot vinyl window, but you’ll also have a larger window unit in wood.

What is standard window height?

There’s a standard answer to these questions that contractors and installers all know. Windows are usually about three feet from the floor and approximately 18 inches from the ceiling. This leaves a header above the window, necessary for proper installation.

What is the length and width of a window?

When recording measurements, follow the format “width by length.” For example, a window that is 63 inches wide and 27 inches long is recorded as “63 x 27.” A window that is 37 inches wide and 55 inches long is recorded as “37 x 55.” Measure windows width from left edge to the right edge.

How wide is a standard window frame?

The standard width is 2 feet, 3 feet, 4 feet, 5 feet, 6 feet and 8 feet. Standard heights in whole numbers range from 2 feet tall all the way up to 8 feet tall, with additional window heights of 18 inches, 52 inches, 54 inches and 62 inches.

How do you read window measurements on house plans?



Windows – Window dimensions are in metres and expressed as four digit numbers – the first two digits refer to the height of the window, the second to the width. Take the window in the living area of our plan. It is listed as 21:24, which means it is 2.1 metres high by 2.4 metres wide.