1. 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

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

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

4. Roof Sheathing
Plywood
OSB

5. Fascia and sophist

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

7. 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