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FM003
Roof Framing Trade Terms
| Term | Definition |
|---|---|
| Bottom Chord | The lower member of a truss |
| Gable | The triangular wall enclosed by sloping ends of a ridged roof |
| Hip Roof | A roof with four sides or slopes extending toward the center |
| Ribband | A 1x4 fastened to the truss to prevent twisting and bowing |
| Strongback | An L shaped arrangement of lumber used to support ceiling joists |
| Stick Built Framing | Framing method where members are installed one at a time |
| Dormer | Provide additional light and ventilation for the attic |
| Unit Rise | The amount a rafter will rise per foot of runPurlin |
| Purlin | A horizontal support parallel to the plate |
| Lookout | A structural member used to frame an overhang |
| Open Web Steel Joist | Steel joist designed to hold roof loads |
| Spreader Bar | Rigging device used to lift long loads |
| Tag Line | Rope attached to a load to control its sitting |
| Tie Down | Metal anchoring system used to fasten framing members to one another |
| Bundle | A package containing a certain number of shingles or shakes |
| Pitch | Rise and Run of a roof rafter |
| Roof Sheathing | Plywood |
| Slope | Rise and Run of a roof surface |
| Underlayment | Felt Paper |
| Asphalt Roofing Cement | Adhesive between shingles |
| Saddle | Diverts water from structures such as chimneys |
| Square | 100 square feet of shingles |
| Valley | The internal part of the angle formed by the meeting od two roofs |
| Exposure | the distance between the exposed edges of the shingle |
| Ridge | Top of the roof |
| Scrim | A loosely woven fabric |
| Selvage | The section of a section of shingles that is not covered by aggregate |
| Valley Flashing | Water proof protection at a roofs intersection |
| Base Flashing | Protective sealing places around any areas exposed to leaks |
| Cap Flashing | Sealant that overlaps the base |
| Side Lap | adjacent shingles that overlap |
| Vent Stack Flashing | Seal Vents the protrude through the roof |
| Wall Flashing | Sealant the protects where the roof meets exterior walls |