Roof Replacement Price Estimator

With any property there are often scenarios that drive the price above or below the estimate above.  Here are a few scenarios that will drive pricing up or down.

Roof Size

The larger the roof, the more:

• shingles/materials
• labor hours
• disposal costs
• underlayment and accessories

Roofers price by “squares” (1 square = 100 sq ft of roof surface), not just house footprint.

Roof Complexity

Complex roofs cost more than simple ones.

Things that increase complexity:

• steep pitch
• multiple valleys
• dormers
• skylights
• chimneys
• cut-up architecture
• multiple roof levels

Complexity increases waste, labor time, and safety requirements.

Material Type

Different roofing systems have very different costs.

Examples:

• 3-tab asphalt shingles = lowest cost
• architectural shingles = mid-range
• designer shingles = premium
• metal roofing = higher
• slate/tile = very high

Even within asphalt shingles, brands and warranty tiers affect pricing.

Tear-Off vs Overlay

A full tear-off costs more than installing over existing shingles because it includes:

• labor to remove old roofing
• dump/disposal fees
• decking inspection

But tear-offs are usually the better long-term solution.

Decking Repairs

Once shingles are removed, damaged wood decking may need replacement.

Common causes:

• leaks
• rot
• mold
• poor ventilation

This is often an “unknown until exposed” cost.

Ventilation & Code Requirements

Modern codes may require:

• ridge vents
• intake ventilation
• ice & water shield
• drip edge
• upgraded flashing

Some estimates include these fully; others don’t.

Labor Market & Location

Roofing costs vary by:

• region
• insurance environment
• labor availability
• local permit fees
• cost of living

For example, Seattle-area roofing costs are generally higher than many rural markets due to labor, permitting, and weather-related code requirements.