# How to Cut Bird's Mouths in Rafters?

A birdmouth cut is a simple way to seat rafters on a load-bearing wall. The cut has to be have a 90 degree angle where it sits on the wall. It can be used to get any slope you want your roof to be.
Q&A Related to "How to Cut Bird's Mouths in Rafters?"
 1. Calculate the pitch of your roof. Pitch = rise / (run x 2) Rise is the vertical distance from the top plate of the wall to the peak of the roof. Run is the horizontal distance http://www.ehow.com/how_7775817_cut-birds-mouths-r...
 First is the angle of the roof rafter. This MUSt be established BEFORE any cutting takes place. Identify the wall plate (normally a 4 x 2 (2 x 4 if in the US)timber across the top http://wiki.answers.com/Q/How_do_you_cut_a_birds_m...
 The "birdsmouth" is actually called a seat cut and it will be determined by the pitch of the roof your trying to achieve . the seat cut will not weaken the roof only the http://answers.yahoo.com/question/index?qid=200806...
 Hi Mike, I usually do my initial cuts with a skil saw (circular saw) but I don't overcut past my marks. Then I take either a hand saw and finish the cut or use a sawzall which is http://en.allexperts.com/q/Building-Homes-Extensio...