Roofing & Exterior
Metal Roofing Calculator
Estimate metal roof panels, trim, fasteners, waste and optional material cost.
Open CalculatorRoofing math drives everything from material orders to safety planning. Use these tools to nail down pitch, angle and coverage before you get on the ladder.
Estimation tools
Roofing & Exterior Calculators
Choose a roofing & exterior calculator to estimate materials, measurements and preliminary project quantities.
Roofing & Exterior
Roofing Underlayment Calculator
Estimate roofing underlayment rolls, waste and optional material cost from effective coverage.
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Ice and Water Shield Calculator
Estimate self-adhered ice-barrier membrane area, whole rolls, waste and optional roll cost for eaves, valleys and vulnerable roof zones.
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Roof Drip Edge Calculator
Estimate roof drip-edge linear footage, stock pieces, overlaps, waste, optional fasteners and material cost.
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Roof Sheathing Calculator
Estimate plywood or OSB roof sheathing sheets, waste, H-clips, fasteners and optional material cost.
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Roof Ventilation Calculator
Estimate soffit intake, ridge exhaust, attic NFVA, vent quantities and optional material cost.
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Soffit & Fascia Calculator
Estimate soffit area and units, fascia linear footage and pieces, waste and optional material cost.
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Gutter & Downspout Calculator
Estimate gutter and downspout stock, hangers, outlets, elbows, end caps, corners, straps, waste and optional cost.
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Siding Calculator
Estimate siding area, squares, purchasing units, starter strip, J-channel, corner posts, waste and optional cost.
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Fiber Cement Siding Calculator
Estimate fiber cement lap planks or panels, effective coverage, waste, optional fasteners and material cost.
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House Wrap Calculator
Estimate house-wrap rolls, overlaps, waste, optional tape, fasteners and material cost for exterior walls.
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Stone Veneer Calculator
Estimate flat stone veneer, outside corners, waste, optional mortar and entered material cost.
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Stucco Material Calculator
Estimate stucco wall area, wet volume, dry-mix bags, lath, barrier units, waste and optional material cost.
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Board and Batten Calculator
Calculate even batten spacing, centerline positions, stock pieces, linear material and optional cost for a wall layout.
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Roofing Cost Calculator
Estimate roof-replacement materials, labor, tear-off, accessories, tax and contingency.
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Roof Pitch Calculator
Determine roof pitch, angle and rafter length.
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Roofing Calculator
Estimate roofing squares, shingle bundles and material cost based on roof size, pitch and waste.
Open CalculatorProject guides
Roofing & Exterior Project Guides
Learn the measurements, formulas, assumptions and common mistakes behind each estimate before ordering materials.
Roofing & Exterior
How Much Ice and Water Shield Do I Need?
Estimate ice and water shield area and whole rolls for measured eaves, valleys and other vulnerable roof locations.
11 min readRead Guide
Roofing & Exterior
How Much Roof Drip Edge Do I Need?
Estimate roof drip-edge linear footage and whole stock pieces for measured eaves, rakes and other included roof edges.
11 min readRead Guide
Roofing & Exterior
How Much Stone Veneer Do I Need?
Estimate stone veneer flats, corner pieces, waste and mortar from measured wall area, openings and exact product coverage.
12 min readRead Guide
Roofing & Exterior
How Much Fiber Cement Siding Do I Need?
Estimate fiber cement siding planks or panels from measured wall area, product dimensions, installed exposure and a project-specific waste allowance.
11 min readRead Guide
Roofing & Exterior
How Much House Wrap Do I Need?
Estimate house-wrap or water-resistive-barrier rolls from gross exterior wall area, roll dimensions, overlap, detailing and waste.
11 min readRead Guide
Roofing & Exterior
How Much Stucco Do I Need?
Estimate stucco area, volume, dry-mix bags and optional accessory materials using exact product yield or published coverage.
12 min readRead Guide
Roofing & Exterior
How Much Gutter Material Do I Need?
Learn how to measure roof edges and estimate gutter stock, downspouts, hangers, connectors, outlets, elbows, end caps, corners and straps.
11 min readRead Guide
Roofing & Exterior
How Much Siding Do I Need?
Learn how to measure exterior walls and estimate siding squares, cartons or panels, waste, starter strip, J-channel and corner posts.
11 min readRead Guide
Roofing & Exterior
How Much Soffit Do I Need?
Learn how to measure soffit area, use product-specific coverage, add waste, estimate fascia pieces and plan optional material cost.
10 min readRead Guide
Roofing & Exterior
How Much Roof Sheathing Do I Need?
Learn how to estimate plywood or OSB roof sheathing panels, waste, clips, fasteners and optional material cost.
9 min readRead Guide
Roofing & Exterior
How Much Roof Ventilation Do I Need?
Learn how to estimate attic ventilation, balance intake and exhaust NFVA, and calculate individual or linear vent quantities.
8 min readRead Guide
Roofing & Exterior
Roof Pitch Chart
Compare roof-pitch angles, slope percentages, and rafter multipliers, then calculate any verified rise and run.
11 min readRead Guide
Roofing & Exterior
How Much Does a New Roof Cost?
Build a transparent preliminary roof-replacement budget using current local material prices, written labor quotes and project-specific allowances.
10 min readRead Guide
Roofing & Exterior
How Much Metal Roofing Do I Need?
Learn how to estimate metal roofing panels, coverage widths, panel lengths, trim, fasteners, waste and optional material cost.
8 min readRead Guide
Roofing & Exterior
How Much Roofing Underlayment Do I Need?
Learn how to estimate felt, synthetic and self-adhered roofing underlayment rolls using effective coverage, overlaps and waste.
8 min readRead Guide
Roofing & Exterior
Roofing Material Calculator
Estimate shingles, underlayment, drip edge, and roofing materials for your next roof replacement. Learn how to measure a roof, calculate waste, and use our free Roofing Material Calculator.
7 min readRead Guide