Question 1

How much does a modified bitumen roof cost per square foot?

Accepted Answer

National baseline, before Washington adjustments: Modified Bitumen Roof typically costs $4-$9 per sq ft. Your final price depends on project size, site conditions, and finish level.

Question 2

What are the labor costs for modified bitumen roofing?

Accepted Answer

National baseline, before Washington adjustments: Labor for modified bitumen roof usually runs $1.40-$3.15 per sq ft. Access, prep work, and installation complexity drive the labor range.

Question 3

How do material costs affect the price of a modified bitumen roof?

Accepted Answer

National baseline, before Washington adjustments: Material costs for modified bitumen roof usually run $1.80-$4.05 per sq ft. Product grade and finish selection drive most of that spread.

Question 4

What other costs are involved in modified bitumen roof installation?

Accepted Answer

National baseline, before Washington adjustments: Additional costs for modified bitumen roof usually come from supplies at $0.48-$1.08 per sq ft; equipment at $0.32-$0.72 per sq ft. These items vary with prep, cleanup, and site conditions.

Question 5

Is modified bitumen roofing expensive?

Accepted Answer

National baseline, before Washington adjustments: Modified Bitumen Roof runs $4.00-$9.00 per sq ft. Standard products and easy access keep a job near $4.00; premium materials, tear-out, or hard-to-reach work push it toward $9.00. Compare at least three itemized quotes against that range.

Question 6

How does the size of my roof impact the cost of modified bitumen?

Accepted Answer

National baseline, before Washington adjustments: Modified Bitumen Roof runs $4.00-$9.00 per sq ft. Materials ($1.80-$4.05) and labor ($1.40-$3.15) make up most of it; product grade, layout complexity, and prep work such as removal or repairs move a job within that range.

How Much Does Modified Bitumen Roof Cost in Washington, District of Columbia?

$4.19 – $9.42

What you get at each price level

Basic

Standard

Premium

Cost Breakdown in Washington

Cost Factors in Washington, District of Columbia

What Affects Pricing

Local Price Adjustments

Frequently Asked Questions

References

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Other trades in Washington

Component	Category	Price Range	Unit
Materials	material	$1.89 – $4.25	sq ft
Labor	labor	$1.46 – $3.28	sq ft
Supplies & Other	supplies	$0.50 – $1.13	sq ft
Equipment & Disposal	equipment	$0.34 – $0.76	sq ft