Exterior Painting Cost Calculator
Exterior painting materials cost between $0.10 and $0.50 per square foot of siding area in 2026, including acrylic paint, primer, caulk, tape, and plastic sheeting. A typical 1,500 sq ft exterior costs $150-$550 in materials alone. Enter your exterior wall area below for an instant itemized estimate.
What materials do you need for exterior painting?
Exterior house painting requires five core materials: exterior acrylic paint (100% acrylic is the standard — it expands and contracts with temperature changes better than vinyl acrylic), exterior primer (critical for adhesion on bare wood, stucco, and masonry), paintable caulk (seals gaps around windows, doors, and siding joints), painter's tape (protects trim, windows, and hardware), and plastic sheeting (covers landscaping, walkways, and surfaces below the work area). Depending on the siding condition, you may also need wood filler for rotted spots, TSP cleaner for degreasing, and a pressure washer rental ($50-$100/day) for surface prep. Total material costs for a standard 1,500 sq ft home range from $150 to $550.
How does siding type affect exterior paint cost?
Siding material dramatically affects both paint consumption and prep requirements. Smooth wood siding is the easiest to paint — standard coverage rates apply and surfaces need minimal prep beyond cleaning and spot priming. Rough-sawn wood siding absorbs 25-50% more paint, reducing coverage to 200-300 sq ft per gallon. Stucco and masonry require specialized primers and elastomeric paint ($40-$80/gallon) that bridges hairline cracks — these cost 50-100% more than standard acrylic. Fiber cement (HardiePlank) is factory-primed and holds paint well, but factory paint typically lasts only 5-7 years before needing a contractor-quality repaint. Vinyl and aluminum siding can be painted but require bonding primer and paint rated for plastic surfaces.
What is the best season to paint a house exterior?
The ideal exterior painting conditions are dry weather with temperatures between 50-85°F and low humidity (below 50%). In most US regions, this means late spring (May-June) and early fall (September-October) are the best seasons. Summer works in Northern states but can be too hot in the South — paint applied above 90°F dries too fast, causing brush marks and poor adhesion. Winter painting is possible in Southern states (FL, TX, AZ) during dry spells above 50°F. The worst time nationwide is mid-summer in high-humidity areas — moisture trapped under paint causes peeling within months. If scheduling a crew, book exterior painting 6-8 weeks out during peak season (April-June) when demand is highest.
How can painters estimate exterior jobs quickly?
Three rules of thumb for fast exterior estimates: First, calculate paintable area as home square footage × 1.0 to 1.3 (accounting for wall height relative to floor area). A 1,500 sq ft ranch is roughly 1,500-1,800 sq ft of exterior wall. Two-story homes multiply the first floor footprint by 2.5-3.0. Second, budget one gallon per 350 sq ft for body color and one gallon per 150 linear feet for trim. Third, plan 2 coats of body color and 1-2 coats of trim, plus primer on any bare wood. Material cost typically represents 15-25% of the total exterior painting bid, with labor making up the remaining 75-85%. QuotrPro automates this: photograph the exterior, and the AI generates a full proposal with itemized materials, labor hours, and pricing.
How to Use This Calculator
- 1
Measure your exterior wall area
Multiply the perimeter of the house by the wall height. Subtract large windows and garage doors. A typical 1,500 sq ft home has 1,200-1,800 sq ft of paintable siding.
- 2
Enter the area in square feet
Type the exterior wall area. The calculator uses standard coverage rates for exterior paint.
- 3
Add your zip code
Optional. Exterior paint costs vary more than interior due to regional climate requirements.
- 4
Review materials
See quantities for exterior paint, primer, caulk, tape, and protective sheeting.
- 5
Get exact pricing
QuotrPro generates complete exterior painting proposals with real-time Home Depot prices.
Frequently Asked Questions
How much exterior paint do I need for a house?
How much does exterior paint cost per gallon in 2026?
Do I need exterior primer?
How much does it cost to paint a house exterior?
How long does exterior paint last?
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