For casings, 50 percent is good. generally, vertical trim elements such as door and window casings should be smaller and have less heft than baseboards. so ive found that a good rule of thumb for sizing window and door casings is to keep them at about 50 percent of the height of the baseboard.. First, cut a rough length of stool (length = outside width of the window + 1-1/2 inches + at least 2 x casing width). hold the stool in place, centered on the window, and mark the inside dimensions of the window jamb on the stool.. I'm still having trouble deciding what width i should go with for the door and window casings. i can't put the baseboards in until i at least figure out what i should do for the doors since the width of the casing will affect the baseboards. i'm still thinking the window casing width is going to dictate what i have to do for the doors..
To make them, he first rips a scrap piece of casing to a width of 1 inch and as long as the casing is high. he sets the legs of a compass to span the largest wall-to-casing gap (as shown in "fill in the gap" 1, far left). step nine // how to trim out a window. finish up the installation. recess all nail heads with a nail set and hammer. Mark the trim, don't measure: mark the side casing. family handyman. cut one end of the casing square. line up the cut end with the pencil mark indicating the 1/4-in. reveal and mark the opposite end for cutting.. Shop for window & door casings at lowes.ca. find the best selection of window & door casings and get price match if you find a lower price..