Roof System Parts Ceiling Joist: Collar tie Run parallel to the floor joists supports the dry wall for the ceiling Structurally supports the wall system from shifting Collar tie 2x4 lumber Ever 3rd ceiling joist Used to strengthen roof structure Placed approximately 3’ to 4’ from ridge board

Roof rafter Runs from the ridge board to the outside wall tie plate. Cuts Plumb cut Birds mouth Seat cut Tail cut Soffit cut

Ridge board 2x? Material Runs the entire length of the roof Holds the ceiling joists in place

Roof Sheathing Plywood OSB

Fascia and sophist

Roofing Material Tar paper: sold by the roll SYNTHETIC ROOFING UNDERLAYMENT Ice barrier: Sticky, self adhesive

Shingles Asphalt: Sold by the square (1 square = 100 sq ft) (10’x10’) Rated by how long they will last Different designs 3 tab architectural