The first step in any trim job is to prepare the jambs for trim.
Standard door casing reveal.
Armour 4 563 in x 6 66 ft spruce pine fir primed door casing kit.
If you look at a closed door the reveal is the narrow edge of the jamb that is visible or revealed standard reveal widththe standard reveal can vary but is usually at least 1 8 inch and seldom more than 1 4 inch.
This allows 15mm height clearance for floor coverings and 4mm clearance width ways.
The reveal size is the actual opening inside the frame that the doors will sit in.
With experience you ll skip this step and simply eyeball the reveal when you put up the trim.
Reveals on both sides of the jamb.
Door casing and window trim are typically the same width and are interchangeable.
From the edge of the jamb to align the casing to the door jamb and windows photo 1.
It is usually manufactured in 96 inch lengths to fit most doors.
Make straight cuts to the tops of the side casing boards so they fit snugly.
Door trim should be mitered at.
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Typical door casing measures about 2 1 4 inches wide and is usually just under 3 4 inch in thickness.
A combination square works well for marking reveals.
Item 152321 model n49163sarmwl.
The thickness is typically 1 2 inch but can range up to 3 4 inch thick for a more substantial casing or more detailed profile.
So in the case of a 2040 x 920mm door the standard reveal size would be 2055 x 924mm.
Allow enough overlap of the jamb for solid fastening but far enough out to not touch the hinge.
The most widely used door casing is 2 1 4 inches in width but can range up to 3 inches.
Family handyman the standard reveal for window molding and door trim is 1 4 in but this can be adjusted a little if needed.
Simply position the head casing so it s level with the reveal line on the top of the door frame then secure with nails.