Roofing costs depend on your project and location. Check with a local pro for your specific job.
Replacing a 1,000 square-foot flat roof in Boston costs $7,000 to $17,000.
Upgrading to a green roof costs $15 to $40 per square foot.
Roofing inspections add $200 to $600.
Boston roofers charge $3 to $7 per square foot.
Replacing a flat roof in Boston offers a 55% to 75% return on investment (ROI).
Boston, MA’s high cost of living makes it essential to budget properly for a flat roof replacement. The cost to replace a flat roof in Boston averages $8,315, with most projects ranging from $3,838 to $13,272. In this guide, we’ll explore how factors such as your project size, materials, and labor requirements affect your total costs.
The cost to replace a flat roof in Boston, MA, depends on factors like your project size, type, roofing material, and application method. You’ll also need to budget for demolition, prep work, and inspections.
Calculating the size of your roof can help you estimate the cost of a replacement. For a rough approximation, measure the length of your house's exterior, then multiply it by the width to get the size of your flat roof. Consider adding a small percentage to account for any overhangs.
Here are estimated costs by roof size—but keep in mind that the type of roof you plan on replacing, as well as the material, greatly affect your flat roof replacement cost:
| Roof Size (Sq. Ft.) | Average Cost |
|---|---|
| 1,000 | $7,000–$17,000 |
| 1,500 | $10,500–$25,000 |
| 2,000 | $14,000–$34,000 |
| 2,500 | $17,500–$42,500 |
| 3,000 | $21,000–$51,000 |
Like traditional sloped roofs, flat roofs offer a multitude of material options. Each has its own cost estimate, advantages, and disadvantages. Many roofing materials look similar, so discuss options with your pro.
Here’s a breakdown of estimated flat roof replacement costs based on material:
| Roof Material | Average Cost per Sq. Ft. | Features |
|---|---|---|
| Fiberglass | $5–$8 | Lasts 25–30 years; not durable |
| Rubber | $5–$14 | Resistant to warm weather and UV rays |
| Thermoplastic polyolefin (TPO) | $5–$15 | Good at handling water pools; single-ply system |
| EPDM | $6–$14 | Made from oil and natural gas byproducts; 10–25-year lifespan |
| Built-up tar | $6–$12 | Fire-resistant; low-maintenance; lasts 30 years |
| Glass-reinforced polyester (GRP) | $5–$8 | Weather-resistant; needs very dry installation; lasts 30 years |
| Modified bitumen | $5–$10 | Fully recyclable; low water-resistance; 10–20-year lifespan |
There are several types of flat roofs, including cold roofs, warm roofs, and green roofs. The type of flat roof will influence the price you pay for a replacement.
Here’s how much flat roof replacement might cost based on roof type:
| Flat Roof Type | Average Cost per Sq. Ft. | Features |
|---|---|---|
| Cold | $5–$11 | Insulation is below the roof deck, typically inside the joists or rafters; a ventilation gap is placed above the insulation; more susceptible to condensation |
| Warm | $7–$14 | Insulation is located on top of the roof deck, above the vapor barrier and below the waterproof membrane; energy-efficient; good moisture control; straightforward installation |
| Inverted | $6–$12 | A type of warm roof with reversed layers, shielding the waterproof membrane from the elements |
| Hybrid | $6–$14 | Insulation is split above and below the roof deck; increased risk of condensation; often used when a full warm roof is not possible |
| Curved | $10–$18 | Low-slope roof that has a gentle curve; has flat roof features but a sloped aesthetic; the slope improves drainage |
| Tapered | $8–$13 | Flat roof with a gentle slope created with tapered insulation boards; the design ensures proper drainage and prevents standing water |
| Green | $15–$40 | Partially or completely covered with vegetation; has layers like a root barrier and drainage system; environmental and economic benefits |
The most common application methods for flat roofs are ballasted, fastened, and fully adhered. Here’s how the flat roof application type might influence your cost:
Ballasted roofs: $2 to $3 per square foot
Fastened attachment method: $2.50 to $3.75 per square foot
Fully adhered method: $3.25 to $4.50 per square foot
Your roofing pro might charge extra for removing the existing roof. This costs about $1.50 to $5 per square foot, or an average of $1,500 to $2,500 total. Prep involves removing debris, mold, or algae and repairing any damage.
It’s a good idea to hire a professional to conduct a final inspection after the roof has been replaced. This will ensure that the contractor did quality work. Expect to pay between $200 and $600 for this inspection.
Boston’s higher cost of living, competitive labor market, and permitting requirements all influence your total roof replacement cost. When budgeting, consider costs for Boston roofing companies, permits, warranties, and additional contractors.
Roofers charge $3 to $7 per square foot for labor, and a flat roof replacement takes about five days, depending on the size and complexity of the job. Some roofing materials, such as built-up tar, are more time-consuming to install, which will increase overall labor costs. If you’re quoted a fee based on the total project cost, expect a markup of 20% to 30% of the job.
Depending on where you live, you may need to pay for a building permit to replace your roof. These permits cost between $250 and $600 in Boston, though this price increases for roofs larger than 1,000 square feet.
New roofs should include manufacturer warranties that cover the roofing materials. If you’re comparing similar materials, prioritize the option with the longest and most comprehensive warranty. You can also check online reviews or ask the contractor for clarification.
Some roof replacement projects in Boston require the help of additional pros, including:
General contractors: These professionals manage trades and oversee larger renovation projects, charging 10% to 25% of the total project cost.
Structural engineers: Boston’s older housing stock may require structural assessments, which a structural engineer can perform for $145 to $175 per hour.
Flat roof replacement projects in Boston, MA, offer a 55% to 75% return on investment (ROI). Upgrading your roof can offer peace of mind to buyers concerned about the effects of harsh winter weather and frequent rainfall. A new flat roof also helps improve your home’s safety, efficiency, and curb appeal, helping your property stand out in a competitive housing market.
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We survey real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
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I had some serious leaks in my roof, and this team handled it perfectly. They quickly identified the problem and fixed it with great care. The final result looks amazing and feels very durable. Truly reliable service.
Decked Out Roofing and Construction Corp.NMTI (who we hired as Tru Blue Construction Inc) were superlative. Juan and Ramon were excellent communicators, answering all of our questions in a timely, professional, and endlessly patient fashion. Our project was a big one - our self-managed condo building had a severely leaky roof that...
NMTI General Contractors, Inc.Quick, professional, and reliable! The team fixed our roof efficiently and left everything clean. Highly recommend for any roof repairs!
STATELY MASONRY & CONSTRUCTION CORPI recently hired MTT & LLc for a roofing project, and I couldn't be happier with the results! The team was professional, punctual, and highly skilled. They explained the process clearly and addressed all my questions. The quality of their work was outstanding, and they completed the job on...
MTT & LLCHighly recommended! Excellent work quality. They replaced our roof and deck and did a great job. They are also a pleasure to work with.
Cornerstone Building Associates LLCThis contractor has gone above and beyond his job to satsify the customer. It demonstrates how excellent customer service can have a lasting effect on customer relationships. I will definitely call this contractor on future projects. The contractor is an empathetic listener and makes the...
Efficient Masonry Construction, Corp.The service we received from Scot's Roofing was beyond exceptional. The team arrived on time and completed the job in one day as promised including a very thorough clean up..
Scot's RoofingThey did an amazing job on my roof. The staff was very helpful and great at communication. They were very responsive, always on time, clean, and did outstanding work. These guys showed up on time, completed the work in a timely fashion, and cleaned up afterward. I enthusiastically recommend them!
Top Tier Masonry AND WaterProofing CorpGreat job done by Lifetime Masonry and Roofing They were very polite, very responsive, arrived when they said they would, and did excellent work for a fair price. Without a doubt, I d use them once more. Recommended.
Lifetime Masonry & RoofingDe La Rosa did a great job with our new roof. Their crew very friendly, quick and professional at the work . They did exactly what was planned. Everything was very clear from the beginning. I would recommend them. to anyone considering a renovation or roofing project. Thanks
Delarosa RoofingFrom average costs to expert advice, get all the answers you need to get your job done.
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