A roof is the one part of a building whose entire job is to lose a fight with\ngravity gracefully — to take everything the sky throws at it and send all of it\nback downhill and off the edge, year after year, while the people underneath\nforget it exists. A roofer exists to keep water on the outside. Everything else\nabout the trade — the materials, the fasteners, the warranties — is in service\nof that single, unglamorous goal. The work matters because a roof that leaks\ndoes not announce itself politely; it rots the deck, mildews the insulation, and\nstains the ceiling weeks or months after the failure, so that the damage is\ndiscovered long after the cause is buried under finished material.
\n","wordCount":122},{"heading":"Core Mission","id":"core-mission","markdown":"Build a continuous water-shedding system that drains by gravity, laps every\njoint so water always runs over the seam and never into it, terminates cleanly\nat every edge and penetration, and is fastened to survive the wind — without\nanyone falling off it.","html":"Build a continuous water-shedding system that drains by gravity, laps every\njoint so water always runs over the seam and never into it, terminates cleanly\nat every edge and penetration, and is fastened to survive the wind — without\nanyone falling off it.
\n","wordCount":43},{"heading":"Primary Responsibilities","id":"primary-responsibilities","markdown":"Tearing off failed roofs and inspecting the deck underneath; setting the\nunderlayment, ice-and-water shield, and drip edge in the right sequence; laying\nshingles, tiles, membrane, or metal panels to manufacturer pattern and exposure;\nflashing every chimney, valley, wall, skylight, and pipe — which is where nearly\nevery leak actually originates; cutting in vents for proper attic ventilation;\nand fastening everything to the wind-uplift requirement for the zone. Beneath\nthe visible labor is constant judgment about slope, lap, and sequence, and a\nnon-negotiable discipline around fall protection, because the trade kills more\npeople by falling than by anything the weather does.","html":"Tearing off failed roofs and inspecting the deck underneath; setting the\nunderlayment, ice-and-water shield, and drip edge in the right sequence; laying\nshingles, tiles, membrane, or metal panels to manufacturer pattern and exposure;\nflashing every chimney, valley, wall, skylight, and pipe — which is where nearly\nevery leak actually originates; cutting in vents for proper attic ventilation;\nand fastening everything to the wind-uplift requirement for the zone. Beneath\nthe visible labor is constant judgment about slope, lap, and sequence, and a\nnon-negotiable discipline around fall protection, because the trade kills more\npeople by falling than by anything the weather does.
\n","wordCount":103},{"heading":"Guiding Principles","id":"guiding-principles","markdown":"- **Water runs downhill, and you lap with it, never against it.** Every course,\n every flashing, every membrane lap is shingled so the upper piece covers the\n lower. A reverse lap is a guaranteed leak no sealant will save.\n- **Flashing sheds water; sealant only buys time.** Caulk and mastic are a\n backup, not a system. If the only thing keeping water out is a bead of\n sealant, the roof has already failed — you just don't know it yet.\n- **The deck and the dry-in come first.** A perfect shingle job over a rotten\n deck or a torn felt is a failure waiting for the first wind-driven rain.\n- **Slope dictates the system.** Below 2:12 you cannot shingle; you need a\n membrane or a soldered metal roof. The pitch decides the trade, not the\n budget.\n- **Tie off above six feet, every time.** The fall doesn't care that you were\n only up there for a minute. Anchor, harness, lifeline — OSHA 1926.501 is the\n floor.\n- **Ventilation is part of the roof.** A roof that can't breathe cooks the\n shingles from below and rots the deck from condensation. Intake and exhaust\n must be balanced.","html":"Roofing nailer and compressor, or hand hammer for detail; tear-off shovel and\npry bar; chalk line for course layout; hook blade and utility knife; tin snips\nand a metal brake for bending flashing on site; seamer for standing-seam panels;\nladder, ladder hoist, and ladder jacks; and — counted as a tool because it keeps\nyou alive — a full fall-arrest kit: harness, rated anchor, lifeline, and rope\ngrab. A torch and roller for torch-down membrane, or a hot-air welder for TPO and\nPVC seams.
\n","wordCount":87},{"heading":"Collaboration","id":"collaboration","markdown":"Roofers come in near the end of the dry-in sequence, after framing and sheathing\nand before or alongside the gutter and siding crews; the carpenter sets the deck\nthe roofer relies on. They coordinate with HVAC for curb flashing on rooftop\nunits, with sheet metal workers for custom flashing and gutters, and with the\ngeneral contractor on staging and weather windows. The friction lives at the\nwall-to-roof transition, where the siding trade and the roofer each own half of\nthe flashing and a gap between them becomes a leak nobody will claim. On\ncommercial work they answer to the membrane manufacturer's inspector, whose\nsign-off the warranty depends on.","html":"Roofers come in near the end of the dry-in sequence, after framing and sheathing\nand before or alongside the gutter and siding crews; the carpenter sets the deck\nthe roofer relies on. They coordinate with HVAC for curb flashing on rooftop\nunits, with sheet metal workers for custom flashing and gutters, and with the\ngeneral contractor on staging and weather windows. The friction lives at the\nwall-to-roof transition, where the siding trade and the roofer each own half of\nthe flashing and a gap between them becomes a leak nobody will claim. On\ncommercial work they answer to the membrane manufacturer's inspector, whose\nsign-off the warranty depends on.
\n","wordCount":112},{"heading":"Ethics","id":"ethics","markdown":"A roof's defects are invisible from the ground and stay hidden until the first\nhard rain finds them, which makes the trade a matter of conscience. The duties:\nflash it right even though no one will ever see the step flashing under the\nsiding; tell the customer the truth when the deck is rotten and the job is bigger\nthan the bid; never roof over a problem to make the schedule; and never send a\nworker onto a steep roof without protection because the day is short. The\nwarranty is a promise, and the only person who knows whether it was earned is the\nroofer who nailed it.","html":"A roof's defects are invisible from the ground and stay hidden until the first\nhard rain finds them, which makes the trade a matter of conscience. The duties:\nflash it right even though no one will ever see the step flashing under the\nsiding; tell the customer the truth when the deck is rotten and the job is bigger\nthan the bid; never roof over a problem to make the schedule; and never send a\nworker onto a steep roof without protection because the day is short. The\nwarranty is a promise, and the only person who knows whether it was earned is the\nroofer who nailed it.
\n","wordCount":108},{"heading":"Scenarios","id":"scenarios","markdown":"**A recurring leak over a bay window.** A homeowner has had three roofers caulk\nthe same spot and it leaks again every spring. The expert doesn't reach for the\ncaulk gun; they pull the shingles back at the wall above the bay and find the\noriginal crew ran a single bent pan of flashing instead of woven step flashing,\nand face-nailed it. Water runs behind the nail heads every wind-driven rain. The\nfix is to strip back, install proper step flashing one piece per course tucked\nunder the siding, set counterflashing over it, and re-lay the field. No sealant\nrequired — the geometry does the work.\n\n**Deciding the system on a porch roof.** A customer wants matching shingles on a\nlow porch addition that measures 1.5:12. Shingling it would look right and leak\nwithin a season because the slope can't shed fast enough to keep wind-driven\nwater from backing under the laps. The roofer explains the pitch rule, and either\nbuilds the slope up with tapered framing to clear 2:12 plus ice-and-water shield\nunder the whole field, or — cleaner — installs a standing-seam metal or\nself-adhered membrane roof rated for low slope. Choosing aesthetics over slope\nhere would be choosing a callback.\n\n**Tear-off reveals a hidden second layer and rot.** Mid-tear-off, the crew finds\ntwo existing layers and a soft, delaminated deck under the valley where the old\nflashing failed years ago. The bid assumed one layer and sound sheathing. The\nhonest move is to stop, photograph it, and call the owner: the deck needs new\nsheathing in the valley and the disposal doubled. Roofing over it to protect the\nmargin would lay a new roof on rotten wood and guarantee the valley fails again.\nThe change order is the ethical and the correct call.","html":"A recurring leak over a bay window. A homeowner has had three roofers caulk\nthe same spot and it leaks again every spring. The expert doesn't reach for the\ncaulk gun; they pull the shingles back at the wall above the bay and find the\noriginal crew ran a single bent pan of flashing instead of woven step flashing,\nand face-nailed it. Water runs behind the nail heads every wind-driven rain. The\nfix is to strip back, install proper step flashing one piece per course tucked\nunder the siding, set counterflashing over it, and re-lay the field. No sealant\nrequired — the geometry does the work.
\nDeciding the system on a porch roof. A customer wants matching shingles on a\nlow porch addition that measures 1.5:12. Shingling it would look right and leak\nwithin a season because the slope can't shed fast enough to keep wind-driven\nwater from backing under the laps. The roofer explains the pitch rule, and either\nbuilds the slope up with tapered framing to clear 2:12 plus ice-and-water shield\nunder the whole field, or — cleaner — installs a standing-seam metal or\nself-adhered membrane roof rated for low slope. Choosing aesthetics over slope\nhere would be choosing a callback.
\nTear-off reveals a hidden second layer and rot. Mid-tear-off, the crew finds\ntwo existing layers and a soft, delaminated deck under the valley where the old\nflashing failed years ago. The bid assumed one layer and sound sheathing. The\nhonest move is to stop, photograph it, and call the owner: the deck needs new\nsheathing in the valley and the disposal doubled. Roofing over it to protect the\nmargin would lay a new roof on rotten wood and guarantee the valley fails again.\nThe change order is the ethical and the correct call.
\n","wordCount":307},{"heading":"Related Occupations","id":"related-occupations","markdown":"The carpenter frames and sheathes the deck the roofer depends on, and the two\nargue over whose tolerance owns a wavy ridge. The sheet metal worker fabricates\nthe custom flashing, gutters, and standing-seam panels the roofer installs. The\nHVAC technician sets rooftop units onto curbs the roofer must flash. The mason\nbuilds the chimney the roofer flashes around, and the siding and exterior trades\nown the other half of the wall-to-roof joint.","html":"The carpenter frames and sheathes the deck the roofer depends on, and the two\nargue over whose tolerance owns a wavy ridge. The sheet metal worker fabricates\nthe custom flashing, gutters, and standing-seam panels the roofer installs. The\nHVAC technician sets rooftop units onto curbs the roofer must flash. The mason\nbuilds the chimney the roofer flashes around, and the siding and exterior trades\nown the other half of the wall-to-roof joint.
\n","wordCount":75},{"heading":"References","id":"references","markdown":"- *NRCA Roofing Manual* — National Roofing Contractors Association\n- *OSHA 29 CFR 1926 Subpart M* — Fall Protection\n- ASTM and manufacturer installation specifications for shingles and membranes\n- *Architectural Sheet Metal Manual* — SMACNA (for flashing detail)","html":"