Roof Tie Ins

By upper third here we mean one third of the length of the rafter from ridge to top plate.

Roof tie ins.

Tie ins have different materials in contact which may create an area of stress. After the addition roof is framed and sheathed snap a line on the existing roof shingles 2 in. Rafter ties should be at least 2 x 4 inches nominal. The easiest way to tie in the new shingles with the old is with a cut valley see four ways to shingle a valley.

Roof tie ins tie in areas should be thoroughly inspected for any sign of failure. When ceiling joists run perpendicular to the rafters inspectors may find rafter ties installed above ceiling joists as framing members every 4 feet running above the ceiling joists connecting opposing rafters. Flashing is installed to surround roof features such as vents chimneys and skylights. A collar tie is a horizontal roof rafter compression connector that is located in the uppermost third of the span of a pair of opposed sloped or gable roof rafters.

Chip away the existing gravel exposing the stone underneath. They form an upside down v with the point at the top of the addition roof. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. With either nails or using the mounting brackets attach the beams to the floor boards of the porch.

Definition of collar tie in roof framing definition. We re going to do a pitch transition or change. A rafter tie forms the bottom chord of a simple triangular roof truss. Up from the valley center and cut through the shingles and underlayment.

We need to do something where that change happens so the panels can go down and water can come off hit the lower slope and come off the roof. Step 3 tie together the 4x4 beams. You ll have a steeper part of your roof turning into a lower slope so there s a steeper pitch up top and a lower pitch on the bottom. The sealants and other items in these areas should be reviewed for cracking splitting or gaps.

With the beams in place you will now have the outline structure for the roof frame. Called tying in this helps to weatherproof and strengthen the joint. Put 4x4 beams against the house also having these four feet apart from each other. Cut two rafters with a circular saw to the pitch of the addition roof and nail them across the rafters on the old roof.