Tips on building and installing round top door jambs.
Arched door jamb construction.
Question i have been asked to bid a double entry door with a 3 3 radius arch.
Door jamb frames consist of two vertical legs or side jambs and a horizontal board at the top called the head jamb.
Plywood make up a full inch and door openings if framed with 2 4 s are actually 3 1 2 in.
July 25 2010.
Two pieces of 1 2 in.
Our normal construction is bricklaid segment arches glued up for jamb width then sawn to the final curve then a face lamination is added to clean it all up.
Building an arched jamb.
Arched openings are made by building a plywood form to fill in the top of a right angle doorway requiring two arched plywood panels one for each side with filler pieces in between.
Building an arched door jamb for an arched door.
Either paint or stain this is the only way to eliminate joints telegraphing.
The finished edge casing reveal is clean and tidy so is never an issue.
I have made interior doors but not arched.
When the door is attached with hinges to the completed jamb frame the entire assembly is referred to as a prehung door.