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Squares, bundles, ridge cap and nails for an asphalt shingle roof, from the roof area or the footprint and pitch. See the full page.

Bundles of starter shingles for the eaves and rakes from the edge lengths and the coverage per bundle. See the full page.

Bundles and pieces of cap shingles for the ridge and every hip, at the exposure you choose. See the full page.

Nails, pounds and boxes for a shingle roof from the squares, the nailing pattern and the nail length. See the full page.

Rolls of felt or synthetic underlayment and the cap nails to fasten them, with laps and waste counted. See the full page.

Rolls of self-adhering membrane for the eaves, valleys and penetrations, with the courses the code distance needs. See the full page.

Pieces of drip edge for the eaves and rakes from the edge lengths, piece length and overlap, plus the nails. See the full page.

Valley metal pieces and lining rolls for open, closed-cut and woven valleys from the valley lengths. See the full page.

Step flashing pieces for sidewalls and chimneys, kick-outs, counter flashing and whether a cricket is required. See the full page.

Pitch from rise and run, degrees or percent, with the pitch factor, hip factor and what the slope means for roofing. See the full page.

True roof surface area and squares from the building footprint, overhangs and pitch, with dormers and suggested waste. See the full page.

The pitch factor and hip factor for any pitch, with a table of the common pitches and the area or rafter length they give. See the full page.

Common rafter length from span or run and pitch, with ridge shortening, overhang, cut angles, birdsmouth and the board to buy. See the full page.

Hip or valley rafter length, run, plumb and cheek cuts, drop and the jack rafter difference for a regular hip. See the full page.

How many trusses a building needs at 12, 16, 19.2 or 24 in spacing, with gable-end trusses, lateral bracing and ties. See the full page.

The triangle area of a gable end from its width and pitch or peak height, for siding and sheathing, with rake trim length. See the full page.

Rise and ridge height above the plate and above the floor or grade from span, pitch, wall height and rafter HAP, plus the fascia height. See the full page.

The extension ladder size for an eave height using the 4:1 angle rule and the 3 ft extension, with the base distance from the wall. See the full page.

Panels per side, panel length and total area for ribbed or corrugated metal roofing from the eave length, slope and coverage width. See the full page.

Standing seam panels, clips and screws from the eave length, seam spacing, slope and clip spacing, for snap-lock, mechanical and nail-strip systems. See the full page.

Panel screws, stitch screws and bags for an exposed-fastener metal roof from the squares or panels, the purlin spacing and the pattern. See the full page.

Ridge cap, eave, rake, valley and wall trim pieces, closure strips, butyl tape, sealant and trim screws from the edge lengths. See the full page.

Corrugated sheets, screws, ridge cap and foam closures for a gable or lean-to shed from its length, width and pitch. See the full page.

Panel counts and lengths for up to four roof sections with their own run and pitch, grouped into order lines, cut to length or from stock. See the full page.

Installed cost range for an exposed-fastener, standing seam or metal shingle roof, with gauge, pitch, storeys, tear-off and region as separate lines. See the full page.

Field tiles, pallets, ridge and rake tiles and the dead load for concrete, clay, S-tile and barrel roofs. See the full page.

Slates per square from slate size and headlap, total slates, copper nails and the weight of the roof. See the full page.

Bundles of cedar shakes or shingles at your exposure from the Cedar Shake and Shingle Bureau coverage rules, plus hip and ridge. See the full page.

Rolls of EPDM, TPO or PVC for a flat roof with turn-ups and seam laps, plus seam tape, adhesive and edge metal. See the full page.

Rolls of mineral-surfaced roll roofing for exposed-nail, concealed-nail or double-coverage application, with nails and cement. See the full page.

Pieces and bundles of synthetic slate or composite shake from piece width and exposure or the data sheet, with starter, ridge and weight. See the full page.

Batten rows, linear feet, pieces and fasteners for a tile or slate roof from the slope length and gauge, with optional counter-battens. See the full page.

Gutter length, sections, joints, corners, end caps, outlets and sealant from the eave runs of the house. See the full page.

How many downspouts a gutter run needs and whether the gutter is big enough, from roof area, pitch and local rainfall intensity. See the full page.

Hangers, fasteners and boxes for a gutter from its length, the number of runs and the spacing your climate needs. See the full page.

The drop over a gutter run at 1/16 to 1/4 in per foot, the high and low end heights and the chalk-line marks between. See the full page.

Gallons of runoff from a roof area per storm or per year, barrels to hold it and the rain that fills one. See the full page.

Gutter guard pieces, packs and screws from the gutter length, runs, size and piece length. See the full page.

Downspout pipe, elbows, straps, extensions, splash blocks or buried drain to carry roof water away from the foundation. See the full page.

Net free vent area by the 1:150 or 1:300 rule, split between soffit intake and ridge or roof exhaust. See the full page.

Feet of ridge vent, pieces and nails for the exhaust an attic needs, with the shortfall if the ridge is too short. See the full page.

Rectangular, round or strip soffit vents, or vented soffit panel, to deliver an attic's intake net free area. See the full page.

How many box (low-profile) roof vents an attic needs for its exhaust and how to space them below the ridge. See the full page.

Inches and bags of blown fiberglass, cellulose or batts to reach the Energy Star R-value for your climate zone. See the full page.

Powered attic fan CFM from attic volume and air changes or the 0.7 CFM rule, with the intake the fan needs. See the full page.

Rafter vent baffles for every vented bay, and whether one reaches past the insulation at your depth and pitch. See the full page.

Installed cost range for a new roof in any common material, with waste, pitch, storeys, tear-off, decking, region and permit as separate lines. See the full page.

Crew hours and labor cost for a roof from the squares, material, pitch, storeys and tear-off, at a billed rate you set. See the full page.

The weight of an old roof by material and layers, the dumpster size and loads it needs and the disposal cost. See the full page.

Cost range for common roof repairs (shingles, pipe boots, flashing, chimneys, valleys, skylights, leaks) with access and region. See the full page.

Turn a roofing quote into a price per square and per square foot, and see where it sits in the published range for its scope. See the full page.

What doing a roof yourself really saves against a quote once materials, rentals, disposal and your hours are counted, with the safety caveats. See the full page.

Worker-hours and days on site for a roof from squares, material, pitch, storeys, tear-off, crew size and a weather allowance. See the full page.

Build a roofing estimate from materials, tax, labor, disposal and permit, with overhead and profit as margin or markup made explicit. See the full page.

What a roof costs per year of life, with maintenance, compared with another material, from installed cost and expected life. See the full page.

The expected replacement window for a roof from its install date, material, climate, ventilation and the warning signs you can see. See the full page.

The dead load a roofing material puts on the structure, the change from the roof it replaces, and when an engineer should look. See the full page.

How many solar panels fit on a roof face after fire-code setbacks, in portrait or landscape, and the system size in kW. See the full page.

Finish date, book-by date and the order of work for a reroof from the start date, squares, material, crew and weather days. See the full page.

How much skylight glazing a room needs by daylighting rule and which standard sizes fit between your rafters. See the full page.