Minimum Sill Height From Floor

Minimum 24 inches of net clear height opening.

Minimum sill height from floor. The 24 inch sill height is typically above a small child s center of gravity reducing the likelihood of the child s toppling over the sill. The code regulates this minimum sill height only. 5 0 square feet allowed if located at grade floor or below grade. Minimum window sill heights.

Glazing between the floor and a height of 36 inches 914 4 mm shall be fixed or have openings through which a 4 inch 102mm diameter sphere cannot pass note. Operable windows where the sill portion of the opening is located more than 75 feet 22 860 mm above. The minimum window sill height requirements are intended to reduce the number of injuries from falls by children through open windows. Because of this privacy screening may be required to windows that have a sill height less than 1 5m above the floor level.

Section r312 2 1 of the 2012 international residential code located on page 91 explains that the lowest part of the actual window opening shall be no less than two feet above the finished floor when the sill is more than six feet above the ground. All three model codes limit the maximum height of the sill to 44 inches. There is no minimum distance that a window must be from the floor even for second story windows. According to the 2018 irc all windows that are more than 6 feet above the grade outside the window must have a bottom opening a minimum of 24 inches above the room s interior floor.

Maximum 44 inches to window sill measured from finished floor. Residential volume has differing requirements than those noted aboveexceptions 1. Where the sill height is below grade it shall be provided with a window well in accordance with section r310 2 3. The certifier will make a decision based on what exists on the neighbouring properties at that time.

Minimum 20 inches of net clear width opening. In the 2012 ibc the required height of the window sill. Code for window sill height. The need for privacy screening is window specific and determined by the certifier during the construction process.

There is no minimum distance that a window must be from the floor even for second story windows. Minimum 5 7 square feet of net clear opening area.