Latest Discussions : Windows & Doors

12:21PM | 03/13/04

Member Since: 03/12/04
1 lifetime posts

Correct angle for a window sill?

Tags: Windows & Doors

Does anyone know what the angle of a window sill should be? I assume if it's too level the water will not run off. Is there a standard or minimum angle a sill should be? Do building codes have a standard angle that's required?

Thanks! Mary

homebild

06:17PM | 03/13/04

Member Since: 01/28/03
693 lifetime posts

I personally know of no code requirements as to minimum angle of exterior sills, except as common sense dictates....that they should be less than 90 degrees to the window unit/panes and thereby allow any liquid water to run off and away from the unit.

BV002041

11:04AM | 09/08/13

Standard angle is 14 Degrees

BV017223

09:38PM | 08/23/18

Positive 14 degree (or 3-12) pitch