Updated September 25th, 2017
Defining window grill size is very important to maintain the aesthetic looks of a window of residential building. Window grill size depends on the size of window. But, it differs from the window size. If you don’t define the window grill size properly before making it, you’ll face problem during plaster work.
What is window grill?
Window grill is made with Mild Steel (MS) bar. It is fixed inside the window opening.
What is the use of window grill?
The main purpose of window grill is to provide safety. But, it also increases the aesthetic looks of a window.
So, why we should define window grill size before making it?
We provide a plaster bit on the bottom of window to prevent rainwater penetration through window. That is why, we need to define window grill size before making it. At this point you didn’t understand properly, I know. Read on. I’ll make it clear to you.
How to define window grill size?
Suppose, you’ll make a grill for a 5′-0″ x 4′-6″ size window. After plastering, you’ll get this size of the window. When making a window grill, we normally provide a flat bar all around the window grill. The flat bar of the window grill should be levelled with the plaster to maintain the equal gap all around the window.
Now look at the vertical section of the window shown in the image below.
Window grill is fixed inside the window opening as shown in the image above. Below the window grill, we make a bit to prevent rainwater penetration inside the room.
The bit is made with the cement plaster. The cross-sectional dimension of the plaster bit is 1½” x 1½”.
So, when you want to make a window grill for the window, make the window grill’s height 1½” short. That means, your window grill’s size should be 5′-0″ x 4′-4½”.
So, when you will make a window grill, always shorten 1½” along the height of the window grill.
Now, the question is, why is it 1½”? Why do we keep the bit height 1½”?.
Because, We fix the aluminium frame beside the grill to fix the window-glass.
To define the height of the plaster bit, you need to check the aluminium section. If you check the aluminium section, you’ll find, the height of aluminium section is 1½”. And, our aim is to keep plaster bit’s top and aluminium’s top on same level. That is the reason we keep the plaster bit’s height 1½”. Based on the aluminium section’s height, you can decrease or increase the height of the plaster bit.
How do you define the window grill size? If you have any idea, please share in the comments below…