IL Roofing Contractor flashcards
IL Roofing Contractor · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Illinois Roofing Industry Licensing Act
- State law (225 ILCS 335) that requires roofing contractors to be licensed by IDFPR and sets insurance, examination, and renewal requirements.
- IDFPR
- Illinois Department of Financial and Professional Regulation; the state agency that issues and renews roofing contractor licenses and handles discipline.
- Home Repair and Remodeling Act
- Illinois law requiring a written contract and consumer rights brochure for home repair work over $1,000, including most residential roofing projects.
- Workers' compensation requirement
- Illinois employers must carry workers' compensation insurance; roofing contractors with employees must maintain coverage and post required notices.
- Chicago roofing contractor license
- City of Chicago requires a separate local roofing contractor license and permit before roof replacement or repair within city limits.
- Mechanics Lien Act
- Illinois law allowing contractors and suppliers to claim a lien on improved property for unpaid labor or materials, subject to notice rules.
- Certificate of insurance
- Document showing general liability coverage; roofing contractors must keep it on file with the state and provide it to clients on request.
- Roof area formula
- Roof area equals horizontal footprint area multiplied by the slope factor; slope factor equals the square root of 1 plus rise over run squared.
- Slope factor 6/12
- A 6/12 pitch has a slope factor of 1.118, so 1,000 square feet of footprint equals 1,118 square feet of roof area.
- Square of roofing
- One square equals 100 square feet of roof area; shingle bundles are ordered by squares, with most 3-tab shingles at 3 bundles per square.
- Waste factor
- Extra material allowance: about 10% for simple gable roofs, 15% for hips and valleys, and 20% for complex roofs with many penetrations.
- Net free ventilation rule
- Code requires 1 square foot of net free vent area per 150 square feet of attic floor area, or 1 per 300 square feet when a vapor barrier is present.
- Ice barrier coverage
- Ice-and-water membrane at eaves must extend 24 inches inside the exterior wall line and be applied over the underlayment at roof edges.
- Fiberglass asphalt shingle
- Shingle with a fiberglass mat core coated in asphalt and mineral granules; the most common steep-slope roof covering in residential construction.
- Architectural shingle
- Laminated asphalt shingle with multiple layers giving a dimensional appearance; usually heavier and longer warranted than 3-tab shingles.
- Ice-and-water shield
- Self-adhering rubberized asphalt membrane used in valleys, eaves, and around penetrations to prevent water infiltration from ice dams.
- Drip edge
- Metal flashing at roof eaves and rakes that directs water away from fascia and into gutters; required by code in many installations.
- Step flashing
- L-shaped metal pieces woven with each shingle course along sidewalls and chimneys to shed water away from vertical surfaces.
- TPO membrane
- Thermoplastic polyolefin single-ply low-slope membrane; seams are heat-welded, and it is available in white for reflectivity.
- EPDM membrane
- Ethylene propylene diene monomer rubber single-ply membrane for low-slope roofs; seams are bonded with contact adhesive or tape.
- Minimum shingle slope
- Asphalt shingles require at least a 2/12 slope; between 2/12 and 4/12 double underlayment is required, and below 2/12 requires a low-slope system.
- Shingle nail placement
- Nails must be driven through the nail line, not above it, and be long enough to penetrate roof sheathing at least 3/4 inch or through the deck.
- Valley installation
- Open valleys use metal flashing under shingles; closed valleys are woven or cut; ice-and-water shield is commonly required in valleys.
- Low-slope drainage
- Low-slope roofs should drain at a minimum of 1/4 inch per foot; ponding water indicates insufficient slope, deflection, or clogged drains.
- TPO seam welding
- TPO seams are cleaned and heat-welded with a hot-air welder; seam strength is tested by probing the weld bead.
- Underlayment overlap
- Asphalt-saturated felt is lapped 2 inches on sides and 4 inches at ends; horizontal laps shed water down-slope.
- OSHA fall protection threshold
- OSHA requires fall protection for construction workers exposed to falls of 6 feet or more; roofing is a covered activity.
- Personal fall arrest system
- PFAS includes an anchor, connector, lanyard, and full-body harness; the anchorage must support 5,000 pounds per worker.
- Ladder setup rule
- Extension ladders must extend 3 feet above the landing, be set at a 4:1 angle, and be secured against movement.
- Warning line system
- On low-slope roofs, a warning line is placed at least 6 feet from the roof edge when conventional fall protection is not used.
- Ice dam code requirement
- IRC requires ice barrier underlayment at eaves in areas where the average January temperature is 25°F or lower, extending 24 inches inside the wall.
- Attic ventilation code
- IRC requires attic ventilation with net free area of 1/150 of attic floor area, or 1/300 with balanced intake and exhaust and a vapor barrier.