Installing Trim Before Roofing

Roof trim is a general term for many parts of the roof that must be installed when shingling a roof.

Installing trim before roofing.

For the best results purchase pre primed boards whenever possible. Be sure to cut this metal at the correct angle before installing it. This should be used in valleys points where 2 sections less than 140 degrees meet and as end caps over the tops of 2 sides that meet. The rake board serves as the starting place for the shingles.

Overlap each metal piece by at least 150 mm 6 and use asphalt plastic cement under each section of overlap. 10 panel wood screw space according to the recommended fastening pattern and local codes. Our host david mackey discusses techniques used in installing eave trim with exposed fasteners using the sl 16 standing seam roofing system from american bui. Most roof trim is installed before shingling but not all of it.

Place the first screw. Install the roofing screws vertically along each rib in the panel. Align the first metal roofing panel so that it overlaps the edging by 1 2 to 3 4 of an inch and is square to the roof. Center a minimum 610 mm 24 wide minimum 28 gauge pre finished galvanized metal valley liner in the valley and fasten with only enough nails to hold it in place nailing at the edges only.

Here is a short video showing how. Rake board trim is an overhang from a pitched roof. It can be a simple board or it may include a frieze board soffit and fascia. 9 roofing panel install with lower edge 1 above the transition bend.

Do you need to install eave or fascia for a metal roof. Metal roofing 101 diy steel roofing installation over shingles subscribe. Numbers give suggested sequence for trim installation steps.