Roofing · Start here
Get the roofing job done
Crickets, tapered insulation, wind zones, ELD surveys, underlayment laps, coatings, and roof proof.
Run the numbers
Roofing field calculators for sizing, quantities, and loads.
Fall clearance calculatorFind the clearance a personal fall arrest system needs below the anchor: free fall + deceleration + worker height + a safety margin.R-value thickness calculatorFind the insulation thickness for a target R-value: thickness = target R divided by the material's R per inch.Ladder setback calculatorSet a ladder safely with the 4 to 1 rule: base setback = height to contact divided by four.Coating coverage calculatorFind the paint or coating needed: gallons = area x coats / the coverage rate, plus waste.Roof squares calculatorEstimate roofing squares from the building footprint and the pitch: roof area = footprint x the pitch multiplier, and one square is 100 square feet.
All Roofing calculators Check you're ready
Readiness checks before you start the work.
Envelope readinessA 2 minute check on whether the air barrier, insulation, and moisture control are working together, before high bills, condensation, or rot prove they are not.Roof maintenance readinessA 2 minute check on whether your low-slope roof is on a real maintenance program, before a clogged drain or a skipped inspection turns into an interior leak and a voided warranty.Drone inspection readinessA 2 minute check on whether your drone inspections are flown legally, capture the thermal data that matters, and feed a report the crew can act on.Facade access readinessA 2 minute check on whether your swing stage, mast climber, or scaffold is rigged, tied, loaded, and tied off so a failure does not drop someone off the building.
All Roofing readiness checks Choose between options
Side-by-side decision guides with a decision table.
Shingle vs Standing SeamAsphalt shingle vs Standing-seam metalBUR vs single-plyBuilt-up roof (BUR) vs Single-ply membraneEPDM vs PVCEPDM membrane vs PVC membraneMech-attached vs adheredMechanically-attached single-ply vs Fully-adhered single-ply
All Roofing comparisons Learn the work
Start with the roofing pillars, then go deep.
Roofing underlayment typesThe layer between the deck and the covering, type by type: asphalt felt, synthetic, and self-adhered ice and water shield, with the slope rule, fastening, exposure, and where each one belongs.Roofing system typesAn overview of every roofing system by slope: the steep-slope shedding roofs of shingle, metal, tile, slate, and wood, and the low-slope membranes of single-ply, built-up, mod-bit, and SPF, and how to pick the right one for the building.Roof warranty types and NDLWhat a roof warranty actually covers and what voids it: manufacturer vs contractor, material-only vs the no-dollar-limit system warranty, the maintenance it requires, and how to keep it valid.Roof flashing typesEvery flashing on the roof, base and counter, step, headwall, valley, drip edge, coping, pitch pan, cricket, and chimney, and the principle that ties them together: water sheds over, never under.Roof deck substrate typesThe structural surface the roof attaches to, deck by deck: steel, structural concrete, lightweight insulating concrete, gypsum, wood, and wood fiber, and how each one drives fastening, fire, and wind uplift.Metal roof types comparedHow to choose a metal roof: the fastening split that decides everything, standing seam vs exposed-fastener panels, metal shingles and stone-coated steel, the metals and coatings, the slope and deck limits, and the cost-and-life trade.
All Roofing field guides Prove it and get paid
Capture the roofing job in the field, build the proof, and send a clean record.