Siding Replacement vs Repair Cost Calculator

ANA›Life Services Authority›National Calculator Authority›Siding Replacement vs Repair Cost 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 Replacement vs Repair Cost Calculator

Compare the total cost of repairing damaged siding versus full replacement, factoring in material costs, labor, lifespan, and long-term value.

### Home & Siding Details

Total Wall Area (sq ft)

Percentage of Siding Damaged (%)

Siding Material

Vinyl Fiber Cement Wood Engineered Wood Aluminum Stucco

Current Siding Age (years)

### Repair Costs

Repair Material Cost ($/sq ft)

Repair Labor Cost ($/sq ft)

Additional Repair Costs (permits, disposal, etc.) ($)

### Replacement Costs

Replacement Material Cost ($/sq ft)

Replacement Labor Cost ($/sq ft)

Additional Replacement Costs (permits, disposal, etc.) ($)

### Financial Factors

Estimated Annual Energy Savings from New Siding ($/year)

Current Home Value ($)

Annual Discount Rate (%)

Calculate

function sidCalc() { // --- Inputs --- const wallArea = parseFloat(document.getElementById('sid-wall-area').value); const damagePct = parseFloat(document.getElementById('sid-damage-pct').value); const material = document.getElementById('sid-material').value; const currentAge = parseFloat(document.getElementById('sid-current-age').value); const repairMat = parseFloat(document.getElementById('sid-repair-material-cost').value); const repairLabor = parseFloat(document.getElementById('sid-repair-labor-cost').value); const repairMisc = parseFloat(document.getElementById('sid-repair-misc').value) || 0; const replaceMat = parseFloat(document.getElementById('sid-replace-material-cost').value); const replaceLabor = parseFloat(document.getElementById('sid-replace-labor-cost').value); const replaceMisc = parseFloat(document.getElementById('sid-replace-misc').value) || 0; const energySavings = parseFloat(document.getElementById('sid-energy-savings').value) || 0; const homeValue = parseFloat(document.getElementById('sid-home-value').value) || 0; const discountRate = parseFloat(document.getElementById('sid-discount-rate').value) / 100;

// --- Validation --- const errors = []; if (isNaN(wallArea) || wallArea 20000) errors.push("Wall 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 (isNaN(currentAge) || currentAge 80) errors.push("Current siding age must be between 0 and 80 years."); if (isNaN(repairMat) || repairMat 0) { document.getElementById('sid-result').innerHTML = 'Please fix the following:' + errors.map(e => '').join('') + ''; return; }

// --- Material Lifespan Lookup (years) --- const lifespanMap = { vinyl: 30, fiber_cement: 40, wood: 25, engineered_wood: 30, aluminum: 35, stucco: 50 }; const materialNames = { vinyl: 'Vinyl', fiber_cement: 'Fiber Cement', wood: 'Wood', engineered_wood: 'Engineered Wood', aluminum: 'Aluminum', stucco: 'Stucco' }; const totalLifespan = lifespanMap[material]; const remainingLife = Math.max(totalLifespan - currentAge, 0); const newSidingLife = totalLifespan;

// --- Damaged Area --- const damagedArea = wallArea * (damagePct / 100);

// --- REPAIR COST --- // Total Repair Cost = (Repair Material $/sqft + Repair Labor $/sqft) × Damaged Area + Misc const repairTotal = (repairMat + repairLabor) * damagedArea + repairMisc;

// --- REPLACEMENT COST --- // Total Replacement Cost = (Replace Material $/sqft + Replace Labor $/sqft) × Total Wall Area + Misc const replaceTotal = (replaceMat + replaceLabor) * wallArea + replaceMisc;

// --- COST PER YEAR OF REMAINING / NEW LIFE --- // Repair: cost spread over remaining siding lifespan const repairCostPerYear = remainingLife > 0 ? repairTotal / remainingLife : repairTotal; // Replace: cost spread over full new siding lifespan const replaceCostPerYear = replaceTotal / newSidingLife;

// --- NET PRESENT VALUE of Energy Savings over new siding lifespan --- // NPV = energySavings × [1 - (1+r)^-n] / r (annuity formula) // If discount rate = 0, NPV = energySavings × n let npvEnergySavings = 0; if (discountRate === 0) { npvEnergySavings = energySavings * newSidingLife; } else { npvEnergySavings = energySavings * (1 - Math.pow(1 + discountRate, -newSidingLife)) / discountRate; }

// --- HOME VALUE INCREASE from Replacement --- // Industry average: full siding replacement returns ~76% of cost in home value (Remodeling Magazine) const roiPct = 0.76; const homeValueGain = replaceTotal * roiPct;

// --- NET REPLACEMENT COST (after energy savings NPV and home value gain) --- const replaceNetCost = replaceTotal - npvEnergySavings - homeValueGain;

// --- BREAK-EVEN ANALYSIS --- // How many years until replacement pays off vs repeated repairs? // Assume repair needs to be redone every remainingLife years // Cumulative repair cost at year t = repairTotal × ceil(t / remainingLife) // Cumulative replace cost at year t = replaceTotal - energySavings×t (simplified linear) // Break-even: replaceTotal - energySavings×t = repairTotal × ceil(t/remainingLife) // We solve numerically year by year up to 60 years let breakEvenYear = null; let cumulRepair = 0; let cumulReplace = replaceTotal; for (let yr = 1; yr 0 ? remainingLife : 1; if ((yr - 1) % repairCycle === 0) cumulRepair += repairTotal; // Replace: subtract annual energy savings cumulReplace -= energySavings; if (cumulReplace 40% OR remaining life = 40 || remainingLife '$' + v.toLocaleString('en-US', {minimumFractionDigits:2, maximumFractionDigits:2}); const fmtN = v => v.toLocaleString('en-US', {minimumFractionDigits:0, maximumFractionDigits:1});

const recColor = recommendation === "REPLACE" ? "#1a6e3c" : "#1a3a6e"; const recBg = recommendation === "REPLACE" ? "#d4edda" : "#d0e4f7"; const recIcon = recommendation === "REPLACE" ? "🔄" : "🔧";

document.getElementById('sid-result').innerHTML = ` ### Results

${recIcon} Recommendation: ${recommendation}

${recommendation === "REPLACE"
? "Full replacement is the more cost-effective long-term decision based on your inputs.": "Repair is the more cost-effective option given the damage level and remaining siding life."}

Siding Profile Material${materialNames[material]} Total Wall Area${fmtN(wallArea)} sq ft Damaged Area${fmtN(damagedArea)} sq ft (${damagePct}%) Expected Total Lifespan${totalLifespan} years Remaining Lifespan${remainingLife} years

Repair Cost Breakdown Material Cost${fmt(repairMat * damagedArea)} Labor Cost${fmt(repairLabor * damagedArea)} Miscellaneous${fmt(repairMisc)} Total Repair Cost${fmt(repairTotal)} Repair Cost / Year of Remaining Life${fmt(repairCostPerYear)}/yr

Replacement Cost Breakdown Material Cost${fmt(replaceMat * wallArea)} Labor Cost${fmt(replaceLabor * wallArea)} Miscellaneous${fmt(replaceMisc)} Total Replacement Cost${fmt(replaceTotal)} Replacement Cost / Year of New Life${fmt(replaceCostPerYear)}/yr

Long-Term Value Analysis NPV of Energy Savings (${newSidingLife} yrs @ ${(discountRate100).toFixed(1)}%)${fmt(npvEnergySavings)} Estimated Home Value Increase (76% ROI)${fmt(homeValueGain)} Net Replacement Cost*${fmt(Math.max(replaceNetCost,0))} Break-Even Year (Replace vs Repair)${breakEvenYear ? 'Year ' + breakEvenYear : '> 60 years'}

`; }

#### Formulas Used

Damaged Area: Damaged Area (sq ft) = Total Wall Area × (Damage % ÷ 100)

Total Repair Cost: Repair Cost = (Repair Material $/sq ft + Repair Labor $/sq ft) × Damaged Area + Miscellaneous Costs

Total Replacement Cost: Replacement Cost = (Replace Material $/sq ft + Replace Labor $/sq ft) × Total Wall Area + Miscellaneous Costs

Cost Per Year: Repair Cost/Year = Total Repair Cost ÷ Remaining Siding Lifespan Replace Cost/Year = Total Replacement Cost ÷ New Siding Lifespan

NPV of Energy Savings (Annuity Formula): NPV = Annual Savings × [1 − (1 + r)^(−n)] ÷ r where r = annual discount rate, n = new siding lifespan in years

Home Value Increase: Value Gain = Total Replacement Cost × 76% (industry average ROI)

Net Replacement Cost: Net Cost = Total Replacement Cost − NPV of Energy Savings − Home Value Gain

Break-Even Year: The year at which cumulative replacement cost (minus annual energy savings) falls below cumulative repair cost (paid every remaining-lifespan years).

Recommendation Logic: REPLACE if: Damage ≥ 40% OR Remaining Life ≤ 5 years OR Net Replacement Cost < Total Repair Cost Otherwise: REPAIR

#### Assumptions & References

Material lifespans: Vinyl 30 yrs, Fiber Cement 40 yrs, Wood 25 yrs, Engineered Wood 30 yrs, Aluminum 35 yrs, Stucco 50 yrs — per This Old House and manufacturer guidelines.
Siding replacement returns approximately 76% of cost in resale home value — Remodeling Magazine Cost vs. Value Report.
Typical repair costs: $2–$5/sq ft materials, $2–$5/sq ft labor. Typical replacement: $3–$12/sq ft materials, $3–$6/sq ft labor — per HomeAdvisor and Angi (2024).

Siding Replacement vs Repair Cost Calculator

Siding Replacement vs Repair Cost Calculator

More Calculators

Read Next

References

Siding Replacement vs Repair Cost Calculator

Siding Replacement vs Repair Cost Calculator

More Calculators

Read Next

References

Related Authorities