Siding Lifespan and ROI Comparison Calculator
ANA›Life Services Authority›National Calculator Authority›Siding Lifespan and ROI Comparison Calculator
.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; } }
Siding Lifespan and ROI Comparison Calculator
Compare different siding materials by total cost of ownership, lifespan, and return on investment over your chosen time horizon.
Home Perimeter Wall Area (sq ft)
Siding Material
Vinyl Fiber Cement (HardiePlank) Wood (Cedar/Redwood) Engineered Wood Brick Veneer Stucco Metal (Steel/Aluminum)
Analysis Period (years)
Current Home Value ($)
Discount Rate / Inflation (% per year)
Installation Type
Professional Installation DIY Installation (labor savings ~40%)
Calculate ROI & Lifespan
function sidCalc() { var sqft = parseFloat(document.getElementById('sid-home-sqft').value); var material = document.getElementById('sid-material').value; var years = parseFloat(document.getElementById('sid-analysis-years').value); var homeVal = parseFloat(document.getElementById('sid-home-value').value); var discount = parseFloat(document.getElementById('sid-discount-rate').value); var diy = document.getElementById('sid-diy').value; var resultDiv = document.getElementById('sid-result');
// --- Validation --- if (isNaN(sqft) || sqft 20000) { resultDiv.innerHTML = 'Please enter a valid wall area between 100 and 20,000 sq ft.
'; return; } if (isNaN(years) || years 100) { resultDiv.innerHTML = 'Please enter an analysis period between 5 and 100 years.
'; return; } if (isNaN(homeVal) || homeVal 5000000) { resultDiv.innerHTML = 'Please enter a valid home value between $50,000 and $5,000,000.
'; return; } if (isNaN(discount) || discount 15) { resultDiv.innerHTML = 'Please enter a discount rate between 0% and 15%.
'; return; }
/ * Material data per sq ft (installed, professional): * { materialCostPerSqft, laborCostPerSqft, lifespan (years), * annualMaintenanceCostPerSqft, roiPercent (resale value boost %) } * * Sources: Remodeling Magazine Cost vs Value Report, HomeAdvisor, NAR / var materials = { vinyl: { name: 'Vinyl', matCost: 1.50, laborCost: 2.00, lifespan: 25, annMaint: 0.02, roiPct: 0.689 }, fiber_cement: { name: 'Fiber Cement', matCost: 2.50, laborCost: 3.50, lifespan: 50, annMaint: 0.03, roiPct: 0.769 }, wood: { name: 'Wood (Cedar/Redwood)', matCost: 3.00, laborCost: 3.00, lifespan: 20, annMaint: 0.10, roiPct: 0.720 }, engineered_wood:{ name: 'Engineered Wood', matCost: 2.00, laborCost: 2.50, lifespan: 30, annMaint: 0.04, roiPct: 0.730 }, brick: { name: 'Brick Veneer', matCost: 6.00, laborCost: 9.00, lifespan: 100,annMaint: 0.01, roiPct: 0.830 }, stucco: { name: 'Stucco', matCost: 3.00, laborCost: 5.00, lifespan: 50, annMaint: 0.05, roiPct: 0.700 }, metal: { name: 'Metal (Steel/Aluminum)',matCost: 3.50, laborCost: 3.50, lifespan: 40, annMaint: 0.02, roiPct: 0.750 } };
var m = materials[material]; var r = discount / 100;
// --- Cost per sq ft (DIY reduces labor by 40%) --- var laborMultiplier = (diy === 'diy') ? 0.60 : 1.00; var installCostPerSqft = m.matCost + (m.laborCost * laborMultiplier); var initialInstallCost = installCostPerSqft * sqft;
/ * Number of replacements needed within analysis period: * replacements = floor(years / lifespan) * Each replacement cost is inflated to future value: * FV_replacement_k = initialInstallCost * (1 + r)^(k * lifespan) * PV_replacement_k = FV_replacement_k / (1 + r)^(k * lifespan) = initialInstallCost * (In real terms, cost stays constant; we use nominal with inflation) / var numReplacements = Math.floor(years / m.lifespan); var pvReplacementCosts = 0; for (var k = 1; k 0) * PV_annuity = C * n (if r = 0) */ var annualMaintCost = m.annMaint * sqft; var pvMaintenance; if (r > 0) { pvMaintenance = annualMaintCost * (1 - Math.pow(1 + r, -years)) / r; } else { pvMaintenance = annualMaintCost * years; }
// --- Total Present Value Cost --- var totalPVCost = initialInstallCost + pvReplacementCosts + pvMaintenance;
/ * Resale Value Added: * resaleValueAdded = homeVal * roiPct * (installCost / homeVal)^0.5 * Simplified industry standard: resale = initialInstallCost * roiPct * (Remodeling Magazine: % of project cost recouped at resale) / var resaleValueAdded = initialInstallCost * m.roiPct;
/ * Net Cost = totalPVCost - resaleValueAdded * ROI % = (resaleValueAdded / initialInstallCost) * 100 * Cost per year = totalPVCost / years * Cost per sq ft per year = totalPVCost / (sqft * years) / var netCost = totalPVCost - resaleValueAdded; var roiPercent = (resaleValueAdded / initialInstallCost) * 100; var costPerYear = totalPVCost / years; var costPerSqftPerYear = totalPVCost / (sqft * years);
// --- Remaining lifespan value (pro-rated salvage) --- var lastInstallYear = numReplacements * m.lifespan; var remainingLifeAtEnd = m.lifespan - (years - lastInstallYear); var salvageValue = (remainingLifeAtEnd / m.lifespan) * initialInstallCost;
// --- Payback period (years until resale value covers initial cost) --- // Simplified: payback = years until cumulative maintenance savings + resale >= initial cost // We use: payback = initialInstallCost / (resaleValueAdded / years + annualMaintCost * 0) // More accurately: payback on resale alone var paybackYears = (resaleValueAdded > 0) ? (initialInstallCost / (resaleValueAdded / years)).toFixed(1) : 'N/A';
// --- Format helpers --- function fmt(n) { return '$' + n.toLocaleString('en-US', {minimumFractionDigits:0, maximumFractionDigits:0}); } function fmtD(n) { return '$' + n.toLocaleString('en-US', {minimumFractionDigits:2, maximumFractionDigits:2}); } function fmtP(n) { return n.toFixed(1) + '%'; }
// --- Score (lower net cost = better value, normalized) --- var valueScore = Math.max(0, Math.min(100, 100 - (netCost / homeVal) * 100)).toFixed(0);
resultDiv.innerHTML = '### Results for ' + m.name + ' Siding ' + '' + 'MetricValue' + 'Material Lifespan' + m.lifespan + ' years' + 'Initial Installation Cost' + fmt(initialInstallCost) + '' + 'Cost per Sq Ft (installed)' + fmtD(installCostPerSqft) + '/sq ft' + 'Number of Replacements (' + years + ' yrs)' + numReplacements + '' + 'PV of Replacement Costs' + fmt(pvReplacementCosts) + '' + 'PV of Maintenance Costs' + fmt(pvMaintenance) + '' + 'Total PV Cost of Ownership' + fmt(totalPVCost) + '' + 'Estimated Resale Value Added' + fmt(resaleValueAdded) + '' + 'Net Cost (after resale)' + fmt(netCost) + '' + 'Resale ROI' + fmtP(roiPercent) + ' of project cost recouped' + 'Annual Cost of Ownership' + fmt(costPerYear) + '/year' + 'Cost per Sq Ft per Year' + fmtD(costPerSqftPerYear) + '/sq ft/yr' + 'Remaining Lifespan at End of Period' + remainingLifeAtEnd.toFixed(1) + ' years' + 'Salvage Value (pro-rated)' + fmt(salvageValue) + '' + 'Value Score (0–100, higher = better)' + valueScore + ' / 100' + '' + 'Analysis period: ' + years + ' years | Discount rate: ' + fmtP(discount) + ' | ' + (diy === 'diy' ? 'DIY installation (40% labor savings)' : 'Professional installation') + '
'; }
#### Formulas Used
Initial Installation Cost: Cost = (Material Cost/sqft + Labor Cost/sqft × Labor Multiplier) × Wall Area (sqft) Labor Multiplier = 1.0 (professional) or 0.60 (DIY)
Number of Replacements: Replacements = ⌊ Analysis Years ÷ Material Lifespan ⌋
PV of Replacement Costs (real terms, constant cost): PV_replacements = Replacements × Initial Installation Cost
PV of Annual Maintenance (annuity formula): PV_maintenance = C × [1 − (1 + r)^(−n)] ÷ r (r > 0) PV_maintenance = C × n (r = 0) where C = Annual Maintenance Cost/sqft × sqft, r = discount rate, n = years
Total PV Cost of Ownership: Total PV = Initial Cost + PV Replacements + PV Maintenance
Resale Value Added: Resale Value = Initial Installation Cost × ROI% (material-specific recoup rate)
Net Cost: Net Cost = Total PV Cost − Resale Value Added
Salvage Value (pro-rated remaining lifespan): Remaining Life = Lifespan − (Analysis Years − Last Replacement Year) Salvage = (Remaining Life ÷ Lifespan) × Initial Installation Cost
#### Assumptions & References
- Material costs and lifespans sourced from Remodeling Magazine Cost vs. Value Report 2023, HomeAdvisor, and the National Association of Realtors.
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