Hurricane Roof Damage Repair Cost Estimator

ANA›Life Services Authority›National Calculator Authority›Hurricane Roof Damage Repair Cost Estimator

.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }

Hurricane Roof Damage Repair Cost Estimator

Estimate the total cost to repair a hurricane-damaged roof based on roof area, damage severity, roofing material, and your region's labor cost index.

Roof Area (square feet)

Estimated Damage (% of roof affected)

Roofing Material

Asphalt Shingles Metal Roofing Clay / Concrete Tile Wood Shake Flat / TPO / EPDM

Roof Pitch

Low Pitch (≤ 4/12) — factor 1.00 Medium Pitch (5/12–8/12) — factor 1.15 Steep Pitch (≥ 9/12) — factor 1.30

Regional Labor Cost Index

Low-Cost Region (rural South/Midwest) — 0.90 Average Region — 1.00 High-Cost Region (coastal / metro) — 1.20 Very High-Cost Region (NYC, SF, Hawaii) — 1.40

Debris Removal & Tarping Needed?

Yes No

Decking / Sheathing Replacement Needed?

None Partial (up to 25% of damaged area) Full (entire damaged area)

Calculate Repair Cost

function hurCalc() { // --- Inputs --- var roofArea = parseFloat(document.getElementById('hur-roof-area').value); var damagePct = parseFloat(document.getElementById('hur-damage-pct').value); var material = document.getElementById('hur-material').value; var pitch = parseFloat(document.getElementById('hur-pitch').value); var region = parseFloat(document.getElementById('hur-region').value); var debris = document.getElementById('hur-debris').value; var decking = document.getElementById('hur-decking').value;

// --- Validation --- var errors = []; if (isNaN(roofArea) || roofArea 20000) errors.push("Roof area must be between 100 and 20,000 sq ft."); if (isNaN(damagePct) || damagePct 100) errors.push("Damage percentage must be between 1 and 100.");

if (errors.length > 0) { document.getElementById('hur-result').innerHTML = '' + errors.join('') + ''; return; }

// --- Material base cost ($/sq ft, installed, national average) --- // Sources: RSMeans, HomeAdvisor, IBHS post-hurricane repair data var materialCost = { asphalt: 4.50, // $3.50–$5.50 avg metal: 9.00, // $7.00–$12.00 avg tile: 11.00, // $8.00–$15.00 avg wood: 7.50, // $6.00–$9.00 avg flat: 6.00 // $4.50–$8.00 avg };

var matCostPerSqFt = materialCost[material];

// --- Damaged area --- var damagedArea = roofArea * (damagePct / 100); // sq ft

// --- Base repair cost --- // Base Cost = Damaged Area × Material Cost/sq ft × Pitch Factor × Regional Labor Index var baseRepairCost = damagedArea * matCostPerSqFt * pitch * region;

// --- Debris removal & emergency tarping --- // Typical: $0.50–$1.50/sq ft of total roof area + flat mobilization fee var debrisCost = 0; if (debris === 'yes') { debrisCost = (roofArea * 1.00 * region) + 350; // $1.00/sqft + $350 mobilization }

// --- Decking / sheathing replacement --- // OSB sheathing: ~$2.50/sq ft installed (national avg) var deckingCostPerSqFt = 2.50 * region; var deckingArea = 0; if (decking === 'partial') { deckingArea = damagedArea * 0.25; } else if (decking === 'full') { deckingArea = damagedArea; } var deckingCost = deckingArea * deckingCostPerSqFt;

// --- Overhead & Profit (contractor margin) --- // Industry standard: 15–20%; use 17.5% var overheadPct = 0.175; var subtotal = baseRepairCost + debrisCost + deckingCost; var overhead = subtotal * overheadPct;

// --- Post-hurricane surge premium --- // FEMA & insurance studies show 10–25% cost surge after major hurricanes // Use 15% surge factor var surgePct = 0.15; var surgeCost = (subtotal + overhead) * surgePct;

// --- Total --- var totalCost = subtotal + overhead + surgeCost;

// --- Low / High range (±20%) --- var lowCost = totalCost * 0.80; var highCost = totalCost * 1.20;

// --- Cost per damaged sq ft --- var costPerDamagedSqFt = totalCost / damagedArea;

// --- Format --- function fmt(n) { return '$' + n.toLocaleString('en-US', {minimumFractionDigits: 0, maximumFractionDigits: 0}); }

var materialLabels = { asphalt: 'Asphalt Shingles', metal: 'Metal Roofing', tile: 'Clay / Concrete Tile', wood: 'Wood Shake', flat: 'Flat / TPO / EPDM' };

var html = '### Estimated Hurricane Roof Repair Cost '; html += ''; html += 'Roof Area' + roofArea.toLocaleString() + ' sq ft'; html += 'Damaged Area' + damagedArea.toLocaleString('en-US',{maximumFractionDigits:0}) + ' sq ft (' + damagePct + '%)'; html += 'Material' + materialLabels[material] + ' (' + fmt(matCostPerSqFt) + '/sq ft)'; html += 'Base Repair Cost' + fmt(baseRepairCost) + ''; html += 'Debris Removal & Tarping' + fmt(debrisCost) + ''; html += 'Decking Replacement' + fmt(deckingCost) + ''; html += 'Contractor Overhead & Profit (17.5%)' + fmt(overhead) + ''; html += 'Post-Hurricane Surge Premium (15%)' + fmt(surgeCost) + ''; html += 'Estimated Total Cost' + fmt(totalCost) + ''; html += 'Typical Range (±20%)' + fmt(lowCost) + ' – ' + fmt(highCost) + ''; html += 'Cost per Damaged Sq Ft' + fmt(costPerDamagedSqFt) + '/sq ft'; html += '';

document.getElementById('hur-result').innerHTML = html; }

#### Formula

Step 1 — Damaged Area: Damaged Area (sq ft) = Roof Area × (Damage % ÷ 100)

Step 2 — Base Repair Cost: Base Cost = Damaged Area × Material Cost ($/sq ft) × Pitch Factor × Regional Labor Index

Step 3 — Debris Removal & Tarping (if selected): Debris Cost = (Roof Area × $1.00 × Regional Index) + $350 mobilization fee

Step 4 — Decking Replacement (if selected): Decking Cost = Decking Area × $2.50/sq ft × Regional Index (Partial = 25% of damaged area; Full = 100% of damaged area)

Step 5 — Subtotal: Subtotal = Base Cost + Debris Cost + Decking Cost

Step 6 — Overhead & Profit: Overhead = Subtotal × 17.5%

Step 7 — Post-Hurricane Surge Premium: Surge = (Subtotal + Overhead) × 15%

Step 8 — Total: Total = Subtotal + Overhead + Surge

Material Cost Benchmarks (national avg, installed): Asphalt Shingles: $4.50/sq ft | Metal: $9.00/sq ft | Clay/Concrete Tile: $11.00/sq ft | Wood Shake: $7.50/sq ft | Flat/TPO/EPDM: $6.00/sq ft

Pitch Factors: Low (≤4/12): 1.00 | Medium (5–8/12): 1.15 | Steep (≥9/12): 1.30

#### Assumptions & References

Hurricane Roof Damage Repair Cost Estimator

Hurricane Roof Damage Repair Cost Estimator

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References

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