Roofing costs depend on your project and location. Check with a local pro for your specific job.
Homeowners in Washington, DC can expect to pay about $0.65 to $2.95 per square foot for roof underlayment replacement.
Prices increase with roof size, pitch, and material type, especially for complex roofs or premium underlayments.
Additional expenses may include roof removal, permits, and possible decking repairs, which can significantly raise your total cost.
Hiring a professional Washington, DC roofer ensures proper installation, prevents leaks and moisture damage, and protects your investment.
Washington, D.C.’s higher cost of living pushes the cost of a roof underlayment replacement above the national average. The average Washington, DC roof underlayment replacement cost ranges between $1,851 and $4,574, with most homeowners paying around $3,594, depending on factors like roof size, material type, and site accessibility. Here’s what to expect from your roof underlayment cost in the nation’s capital.
Here are the main factors to consider when budgeting for roof underlayment replacement in Washington, D.C.
The size of your roof will be the most significant factor when determining the total cost of roof underlayment replacement, as many roofers will charge by the square foot. Larger roofs require more underlayment material and require more time and effort to carry out the installation. Replacing roof underlayment costs an average of around $1.75 per square foot, with prices ranging from $0.65 to $2.95 per square foot in most cases.
You can get a more accurate estimate if you calculate your roof’s square footage and then multiply by these average prices.
| Roof Size (Sq. Ft.) | Roof Size in Squares | Price Range |
|---|---|---|
| 500 | 5 | $325–$1,470 |
| 1,000 | 10 | $655–$2,940 |
| 2,000 | 20 | $1,305–$5,880 |
| 2,500 | 25 | $1,635–$7,405 |
| 3,000 | 30 | $1,960–$8,930 |
The type of roof you have will determine what kind of underlayment is best for your home, which will impact the total roof underlayment replacement cost. Underlayment for an asphalt roof is normally roofing felt, which is very inexpensive and will cost closer to $1,851. Tile roof underlayment replacement costs closer to $4,574 because synthetic underlayments are better for tile roofs. Use the table below to get an idea of what your roof underlayment replacement will cost.
| Roof Type | Ideal Underlayment | Replacement Cost |
|---|---|---|
| Asphalt | Roofing felt | $3,595 |
| Clay/Tile | Synthetic | $3,920 |
| Metal | Ice and water shield | $4,140 |
| Slate | Synthetic | $3,920 |
Your roof pitch will play a role in your total in a few ways. First, steeper roofs have larger surface areas that require additional materials and labor to get the job done, so a steep roof on a 1,000-square-foot home will cost you more in underlayment replacement costs than a shallow roof on a similarly sized property due to the difference in surface area.
Steep roofs are also more challenging and dangerous to work on, so roofers may bump up labor costs if they need additional safety equipment to get the job done.
Finally, roof pitch influences what roofing materials are suitable for your home, and the roofing material, in turn, affects the best type of roof underlayment. The indirect relationship between roof pitch and underlayment material can cause your price to increase or decrease based on the material cost of the underlayment you need.
There are three main types of roof underlayment, and each comes at a different price per square foot. Rubber underlayment is the most expensive but is waterproof, unlike felt or synthetic underlayment. You’ll often find it under metal roofing rather than under asphalt shingles or clay tiles. Roof felt is the most common and most affordable underlayment, and it’s considered the best roof underlayment for asphalt shingles.
| Underlayment Type | Average Material-Only Price Per Square |
|---|---|
| Felt | $5–$60 |
| Synthetic | $20–$65 |
| Rubber | $55–$80 |
In preparation for underlayment installation, your roofer will need to remove your old roof and old underlayment, and you’ll pay between $1,090 and $5,445 for the removal. Most roofers include this cost in their initial estimate, so you typically won’t have to budget separately for it.
They will install underlayment under your new roof material but over the roof decking or sheathing below. If you find damage to your roof decking when you remove your old roof, you might need to pay extra for roof decking repairs. New roof sheathing costs between $2.20 and $5.45 per square foot for materials and labor.
In most municipalities, you’ll need a building permit before you can legally replace your roof. There’s no permit specifically for roof underlayment replacement, but you will need one to install new roofing over the underlayment. The permit cost for a full roof replacement, including replacing the underlayment, is usually between $150 and $500.
Labor charges will make up the majority of your roof underlayment cost. Washington, DC roofing contractors charge an average of around $1,520 to $4,140 for the labor to replace a roof underlayment. Although labor makes up most of the cost, it’s crucial to hire a pro to avoid personal injury and ensure everything is installed correctly. Improper installation can lead to leaks, mold, and other costly moisture-related damage, as well as voided manufacturer warranties, so it’s always worth bringing in a professional.
In Washington, DC, roofing contractors must be licensed and registered with the Department of Licensing and Consumer Protection (DLCP). Reputable contractors should also carry liability insurance and workers’ compensation to protect both you and their crew throughout the project.
Washington, DC has a 6% sales tax rate, which applies to materials used in your roof underlayment replacement. Contractors generally include this cost in your estimate.
Replacing a roof underlayment on its own won’t noticeably impact resale value on the Washington, DC market, but it has greater potential return-on-investment (ROI) of about 50% to 70% as part of a full roof replacement. DC buyers often expect homes to be move-in ready, and a new roof helps demonstrate that the home is well-maintained and won’t need major repairs shortly after moving in. So, while a new roof doesn’t have the same impact as a major remodel, it can still attract competitive offers on the market and help homes sell faster.
To help homeowners plan their next project, Angi provides readers with carefully researched cost data and upholds strict editorial standards. We start with national average project costs, which we collect by analyzing competitor information, retailer material costs, and input from professional contractors. We then apply local price index data to calculate location-specific estimates that reflect what homeowners typically pay in their local area. To do that, we use data from the U.S. Bureau of Economic Analysis (BEA), including its Regional Price Parities (RPPs), which measure price differences across cities. This helps us account for differences in labor, materials, and overall cost of living, so estimates in higher- or lower-cost areas better reflect real-world local pricing.
Every estimate undergoes a thorough editorial review to verify accuracy, consistency, and alignment with observed market conditions.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
I can't say enough good things about this roofing service. The team was prompt, knowledgeable, and went above and beyond to ensure our satisfaction. Definitely the best in town.
Pro Roofing NWI found A A Roofing Co the first winter after buying our house 18 years ago and rainwater leaked the through the ceiling in many places. It was a big job, a full roof replacement. My roof is a flat tar & gravel; a rowhouse in Washington DC. I had gotten many quotes and A A Roofing stood out...
My roof was leaking, and I reached out to John Boyd who responded promptly to assess the problem and explained all my options. Great company to do business with from the initial contact through scheduling and installation. Top notch professionals who kept everything on track and installed my...
I. Boyd Home ImprovementsWork (involving 3 separate roofs and a gutter repair) was done efficiently and effectively, and they were willing to meet a lower price that was offered by one of their competitors. While the proof will be in the roofs' performance over time, so far, we are fully satisfied!
William MacKayThe roofing installation provided by this company was exceptional. The team was professional and efficient, completing the installation in a timely manner. They used high-quality materials and paid attention to every aspect of the process, ensuring a durable and aesthetically pleasing roof.
Fixed skylight and coated roof in silicone quickly and for a good price.
Louise AugustI carefully researched and interviewed six different roofing companies. I chose American Group Construction, and they did a fantastic job. Professional operation from start to finish.
American Group Construction, Inc.Next day went above and beyond to inspect my roof. My roof is not accessible but they made it work. Appreciated their due diligence.
NextDay InspectKelbie Roofing replaced our flat roof in Washington, D.C. Mike was very helpful in discussing the options and scheduling the work quickly. Nestor and his crew showed up on time, and did the work quickly and professionally. Mike provided photos and the new roof looked great. We had a problem...
Kelbie Home Improvement IncThey did an excellent job coating my roof
Louise AugustFrom average costs to expert advice, get all the answers you need to get your job done.
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