Termite Treatment Coverage Area Calculator

ANA›Life Services Authority›National Calculator Authority›Termite Treatment Coverage Area 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; } }

Termite Treatment Coverage Area Calculator

Calculate the total coverage area required for termite treatment based on your property dimensions, treatment method, and structure type. Results include perimeter linear footage, soil treatment volume, and estimated product quantities.

Structure Length (ft)

Structure Width (ft)

Foundation Depth (in)

Typical residential: 12–24 in. Check local building codes.

Treatment Type

Liquid Soil Barrier (Trench & Treat) Bait Station System Foam Injection (Wall Voids)

Foundation Type

Slab-on-Grade Crawl Space Basement

Interior Wall Linear Footage (ft) (optional, for foam/bait)

Calculate Coverage

### Coverage Results

Perimeter Linear Footage: Total Treatment Area (sq ft): Trench Volume (cu ft): Termiticide Solution Required (gallons): Bait Stations Required: Foam Volume Required (oz):

function terCalc() { const errEl = document.getElementById('ter-error'); const resEl = document.getElementById('ter-result'); errEl.style.display = 'none'; resEl.style.display = 'none';

// --- Inputs --- const length = parseFloat(document.getElementById('ter-length').value); const width = parseFloat(document.getElementById('ter-width').value); const foundDepthIn = parseFloat(document.getElementById('ter-foundation-depth').value); const treatType = document.getElementById('ter-treatment-type').value; const foundType = document.getElementById('ter-foundation-type').value; const interiorWalls = parseFloat(document.getElementById('ter-interior-walls').value) || 0;

// --- Validation --- const errors = []; if (isNaN(length) || length 240) errors.push("Foundation depth seems unusually large (max 240 in). Please verify."); if (interiorWalls 0) { errEl.innerHTML = errors.map(e => '⚠ ' + e).join(''); errEl.style.display = 'block'; return; }

// --------------------------------------------------------------- // CORE FORMULAS // --------------------------------------------------------------- // 1. Perimeter (linear feet) // P = 2 × (L + W) const perimeter = 2 * (length + width);

// 2. Total footprint area (sq ft) // A = L × W const footprintArea = length * width;

// 3. Foundation depth in feet const foundDepthFt = foundDepthIn / 12;

// --------------------------------------------------------------- // LIQUID BARRIER — Trench & Treat // Per NPMA / Termidor label: trench 6 in wide × depth to footer // Trench volume (cu ft) = P × trenchWidth(ft) × foundDepthFt // Application rate: 4 gallons per 10 linear feet per foot of depth // (standard label rate: 4 gal / 10 lin ft / 1 ft depth) // For slab: add rod-injection beneath slab at 1 gal per 10 sq ft // For crawlspace: add soil beneath structure at 1 gal per 10 sq ft // --------------------------------------------------------------- const trenchWidthFt = 0.5; // 6 inches const trenchVolCuFt = perimeter * trenchWidthFt * foundDepthFt;

// Perimeter gallons: 4 gal per 10 lin ft per ft of depth let perimGallons = (perimeter / 10) * 4 * foundDepthFt;

// Interior / sub-slab / crawlspace gallons let subAreaGallons = 0; if (foundType === 'slab') { // Rod injection beneath slab: 1 gal per 10 sq ft subAreaGallons = footprintArea / 10; } else if (foundType === 'crawlspace') { // Soil treatment under crawlspace: 1 gal per 10 sq ft subAreaGallons = footprintArea / 10; } // Basement: perimeter trench only (no sub-slab injection standard)

// Interior wall trench (if applicable) const interiorGallons = (interiorWalls / 10) * 4 * foundDepthFt;

const totalGallons = perimGallons + subAreaGallons + interiorGallons;

// --------------------------------------------------------------- // BAIT STATIONS // Standard spacing: 1 station every 10 linear feet around perimeter // + 1 station per 10 ft of interior walls // Minimum 10 stations per structure (industry standard) // --------------------------------------------------------------- let baitStations = Math.ceil(perimeter / 10) + Math.ceil(interiorWalls / 10); baitStations = Math.max(baitStations, 10);

// --------------------------------------------------------------- // FOAM INJECTION — Wall Voids // Application rate: ~2 oz per linear foot of wall void // Total linear footage = perimeter + interior walls // --------------------------------------------------------------- const foamLinFt = perimeter + interiorWalls; const foamOz = foamLinFt * 2; // 2 oz per linear foot

// --------------------------------------------------------------- // Display // --------------------------------------------------------------- document.getElementById('ter-out-perimeter').textContent = perimeter.toFixed(1) + ' lin ft'; document.getElementById('ter-out-area').textContent = footprintArea.toFixed(1) + ' sq ft';

if (treatType === 'liquid_barrier') { document.getElementById('ter-out-trench-vol').textContent = trenchVolCuFt.toFixed(2) + ' cu ft'; document.getElementById('ter-out-gallons').textContent = totalGallons.toFixed(1) + ' gal'; document.getElementById('ter-out-bait').textContent = 'N/A'; document.getElementById('ter-out-foam').textContent = 'N/A'; } else if (treatType === 'bait_station') { document.getElementById('ter-out-trench-vol').textContent = 'N/A'; document.getElementById('ter-out-gallons').textContent = 'N/A'; document.getElementById('ter-out-bait').textContent = baitStations + ' stations'; document.getElementById('ter-out-foam').textContent = 'N/A'; } else { document.getElementById('ter-out-trench-vol').textContent = 'N/A'; document.getElementById('ter-out-gallons').textContent = 'N/A'; document.getElementById('ter-out-bait').textContent = 'N/A'; document.getElementById('ter-out-foam').textContent = foamOz.toFixed(1) + ' oz (' + (foamOz / 128).toFixed(2) + ' gal)'; }

// Notes let notes = 'Notes:'; if (treatType === 'liquid_barrier') { notes += ''; notes += ''; if (foundType === 'slab') notes += ''; if (foundType === 'crawlspace') notes += ''; } else if (treatType === 'bait_station') { notes += ''; notes += ''; } else { notes += ''; notes += ''; } notes += ''; notes += ''; document.getElementById('ter-notes').innerHTML = notes;

resEl.style.display = 'block'; }

#### Formulas Used

Perimeter: P = 2 × (Length + Width)

Footprint Area: A = Length × Width

Liquid Barrier — Trench Volume (cu ft): Vtrench = P × 0.5 ft × (Foundation Depth ÷ 12)

Liquid Barrier — Perimeter Gallons: Gperim = (P ÷ 10) × 4 gal × (Foundation Depth ÷ 12) Rate: 4 gallons per 10 linear feet per foot of depth (standard label rate)

Liquid Barrier — Sub-Slab / Crawlspace Gallons: Gsub = A ÷ 10  (1 gallon per 10 sq ft)

Total Liquid Required: Gtotal = Gperim + Gsub + Ginterior walls

Bait Stations: N = ⌈P ÷ 10⌉ + ⌈Interior Walls ÷ 10⌉  (minimum 10 stations)

Foam Injection: Foz = (P + Interior Walls) × 2 oz/lin ft

#### Assumptions & References

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References

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