17. Bevel the ledge under the window with mortar so it will shed water. Use a straightedge as a guide because your saw cut won’t be perfectly straight. Wet the ledge, add the mortar and shape the bevel with a small finishing trowel.
Installing Replacement Windows Two easy ways to pull out old windows and put in new wood or vinyl replacement inserts or double-hung sash replacement kits.
Egress Windows How to plan an egress window for greater safety, especially for basement remodels.