Latest Discussions : Windows & Doors


12:21PM | 03/13/04
Member Since: 03/12/04
1 lifetime posts
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


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.


11:04AM | 09/08/13
Standard angle is 14 Degrees


09:38PM | 08/23/18
Positive 14 degree (or 3-12) pitch


03:33PM | 04/05/21
I don’t understand these measurements. I was told and slso saw something online that said the outer sill should be about 3/4 of an inch slope. Can someone explain that tome


06:54PM | 07/29/21
A “3-12 pitch” would mean a 12 inch wide surface would have 3 inches of fall. Ratios like that are used to describe roof pitch, sidewalk or ramp fall etc.

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