How Deep Should Windows Sills Be? -The Depth Of Windows Sills

Window sill is an important part of the window. It’s small but plays a key role with functional and decorative appeal. The thing is, how deep should window sills be? Then the following passage is going to help you with some tips about depth of window sills.

Window Sills & Their Functions

Window sill is the flat part or the surface of the window bottom, it’s part of the window trim, like head casing and side jambs. Window sills can be made of wood, aluminum, vinyl, stone and tiles.

Window sills are divided into interior sill and exterior sill according to their locations. They also function differently. Exterior sill is designed at an angle to mainly let the rainwater out to provide good water drainage. Interior sill is generally longer than width of window frame while interior is as long as window frame in most cases. Interior sill is designed to mainly resistant condensation and allow for decoration like potted plants and inside cleaning. Interior sill and exterior sill work together to provide better sealing between window frame and the wall. In this way, it provides improved energy efficiency with small mount of cost. Without window sills, a window isn’t complete.

Are Window Sills Necessary?

Window sills are necessary part of a window, due to its functions and practical aesthetics. Without windows sills, rainwater might come into the house and air flows, thus it greatly reduces the air tightness and water tightness. What’s more, the entire window aesthetics and harmony will lost with lack of window sills.

The Depth Of Window Sills

Window sills are usually in the shapes of cuboid, its depth matters than width. There are some general data about sizes of sills. As for length, window sills are usually 40mm to 60mm longer than frame on both sides. Exterior sill can be as long as the frame in most cases. As for width, it depends. As for depth, it usually varies from 40mm to 200mm. Depth of window sills depends on the specific projects and users’ preference.

Size of window sills are never an invariable data, it’s affected by many objective and subjective factors. A proper size of window sill matches your window and as well as your room style.

ESWDA window experts would like to help you out all the window questions with their professional knowledge and years of experience. All your questions, ESWDA window experts have got answers for you.

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