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Find Natural slate roofing installers and replacers in Alexandria

Home Genius Exteriors

4.94(
356
)
Approved Pro

Home Genius Exteriors

4.94(
356
)
Approved Pro
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
22 years of experience

Elevate your home with Home Genius Exteriors, setting the standard in Cleveland by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

"The crew on site did a good job and everyone was very pleasant to work with I am happy with the results of my new gutters!"

Barbara C on February 2026

Elevate your home with Home Genius Exteriors, setting the standard in Cleveland by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It?s time for a different experience, entrust your next home project to a genius and schedule your free inspection today!

"The crew on site did a good job and everyone was very pleasant to work with I am happy with the results of my new gutters!"

Barbara C on February 2026


Avatar for Augustine Roofing LLC

Augustine Roofing LLC

4.94(
747
)
Approved Pro

Augustine Roofing LLC

4.94(
747
)
Approved Pro
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
22 years of experience

WE NOW SERVICE MARYLAND FOR NEW ROOFS ONLY NO REPAIRS AT THIS TIME. Our experienced team, based out of Sterling, Va, has built a reputation for providing high-quality residential and commercial roofing services at affordable prices. Give us a call for a quick consultation. We'd be happy to schedule a free estimate and provide you with all of the material and warranty information you need to help you make your decision. Augustine is a veteran and offers military and senior citizen discounts. Class-A Contractors License # 2705 124869A. Additional contact name - Erin Howard.

"Overall, the workmanship was excellent, the price reasonable, and most importantly, Augustine continued to build a huge amount of trust with the customer through an honest and transparent process from beginning to end. Scheduling the initial estimate was easy and timely, good communication continued through the contract process, but we had to wait two months for word on work scheduling. Dakota Biller was a Godsend. He expertly talked through the full scope of options, pros, and cons. He listened to our unique needs, provided helpful guidance, and did not attempt to upsell. Installation was professional and cleanup was thorough. The final product looks magnificent! Price was the most reasonable of all highly ranked companies primarily due to Augustine’s willingness to only replace rotted fascia with new wood. Their 10-year warranty provided peace of mind. This was a RARE hassle-free project, and I cannot recommend Augustine Roofing enough."

David G on May 2025

WE NOW SERVICE MARYLAND FOR NEW ROOFS ONLY NO REPAIRS AT THIS TIME. Our experienced team, based out of Sterling, Va, has built a reputation for providing high-quality residential and commercial roofing services at affordable prices. Give us a call for a quick consultation. We'd be happy to schedule a free estimate and provide you with all of the material and warranty information you need to help you make your decision. Augustine is a veteran and offers military and senior citizen discounts. Class-A Contractors License # 2705 124869A. Additional contact name - Erin Howard.

"Overall, the workmanship was excellent, the price reasonable, and most importantly, Augustine continued to build a huge amount of trust with the customer through an honest and transparent process from beginning to end. Scheduling the initial estimate was easy and timely, good communication continued through the contract process, but we had to wait two months for word on work scheduling. Dakota Biller was a Godsend. He expertly talked through the full scope of options, pros, and cons. He listened to our unique needs, provided helpful guidance, and did not attempt to upsell. Installation was professional and cleanup was thorough. The final product looks magnificent! Price was the most reasonable of all highly ranked companies primarily due to Augustine’s willingness to only replace rotted fascia with new wood. Their 10-year warranty provided peace of mind. This was a RARE hassle-free project, and I cannot recommend Augustine Roofing enough."

David G on May 2025


Avatar for Certified Roofing

Certified Roofing

4.87(
841
)
Approved Pro

Certified Roofing

4.87(
841
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
42 years of experience

Certified is a family-owned business, after leaving a decorated career as a Navy SEAL, Steve entered the trades of Commercial Roofing, and Residential Roofing for 1 reason: he loved the satisfaction of solving people's roof problems. Customers love us because of our Military and First Responder Discounts, plus our 100% custom satisfaction rate. We also have industry affiliations and certifications such as CertainTeed 5-Star, CSSB and Mule-Hide. Our estimates and visits are always free. Certified offers Commercial and Residential contracting services in Maryland, Washington DC, Virginia, West Virginia, and Delaware.

"If you're searching for a reliable company to replace your roof, I highly recommend Certified, a Service-Disabled Veteran owned business. From my very first phone call with the owner, Steve Mitchell, I was thoroughly impressed by his professionalism and genuine approach. His guiding principle is “do the right thing always,” and he truly listened to my concerns, promptly arranging an appointment to move forward. At our meeting, Steve EPITOMIZED EXCEPTIONAL CUSTOMER SERVICE - he listened intently, thoughtfully answered every question, and addressed all my worries. He explained the entire roof replacement process in clear, easy-to-understand terms. When it came to areas where the wood was damaged under the shingles, Certified sent me detailed photos of the damage, then replaced and numbered the plywood so I could see exactly what was done. I received before-and-after photos, and I have to say, if a roof can be beautiful, nine is absolutely stunning and comes with a 50-year warranty! "

Denise I on February 2026

Certified is a family-owned business, after leaving a decorated career as a Navy SEAL, Steve entered the trades of Commercial Roofing, and Residential Roofing for 1 reason: he loved the satisfaction of solving people's roof problems. Customers love us because of our Military and First Responder Discounts, plus our 100% custom satisfaction rate. We also have industry affiliations and certifications such as CertainTeed 5-Star, CSSB and Mule-Hide. Our estimates and visits are always free. Certified offers Commercial and Residential contracting services in Maryland, Washington DC, Virginia, West Virginia, and Delaware.

"If you're searching for a reliable company to replace your roof, I highly recommend Certified, a Service-Disabled Veteran owned business. From my very first phone call with the owner, Steve Mitchell, I was thoroughly impressed by his professionalism and genuine approach. His guiding principle is “do the right thing always,” and he truly listened to my concerns, promptly arranging an appointment to move forward. At our meeting, Steve EPITOMIZED EXCEPTIONAL CUSTOMER SERVICE - he listened intently, thoughtfully answered every question, and addressed all my worries. He explained the entire roof replacement process in clear, easy-to-understand terms. When it came to areas where the wood was damaged under the shingles, Certified sent me detailed photos of the damage, then replaced and numbered the plywood so I could see exactly what was done. I received before-and-after photos, and I have to say, if a roof can be beautiful, nine is absolutely stunning and comes with a 50-year warranty! "

Denise I on February 2026


Avatar for R M Banning Roofing

R M Banning Roofing

4.96(
243
)
Approved Pro

R M Banning Roofing

4.96(
243
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
44 years of experience

2025 Super Service Award Winner in Roofing, Siding and Windows! R.M. Banning is a family owned business serving Northern Virginia for over 40 years. For over four decades R.M. Banning has earned the trust of thousands of customers through our new Roof, Siding and Windows. Top quality products and master applicators are the key to our success. Chances are if you live in Northern Virginia the R.M. Banning crews have worked for one or more of your neighbors. Consult with one of our estimators today and find out which products and colors will freshen your home and give it that new look. Take a look at the new Limited Lifetime warranties on siding and roofing products that are changing the home improvement industry.

"After the big snowstorm caused damage to the siding on our home, RM Banning came through for us in a big way. They are a small, family-owned business that truly takes pride in their customer service and workmanship. From the first call to the final repair, they were responsive, professional, and easy to work with. Their team assessed the damage quickly, explained the process clearly, and completed the repairs efficiently. The siding now looks fantastic — you would never know there had been any storm damage. It’s clear they care about their customers and stand behind their work. We highly recommend RM Banning to anyone looking for quality repairs and a company that genuinely takes pride in what they do."

Thomas J on March 2026

2025 Super Service Award Winner in Roofing, Siding and Windows! R.M. Banning is a family owned business serving Northern Virginia for over 40 years. For over four decades R.M. Banning has earned the trust of thousands of customers through our new Roof, Siding and Windows. Top quality products and master applicators are the key to our success. Chances are if you live in Northern Virginia the R.M. Banning crews have worked for one or more of your neighbors. Consult with one of our estimators today and find out which products and colors will freshen your home and give it that new look. Take a look at the new Limited Lifetime warranties on siding and roofing products that are changing the home improvement industry.

"After the big snowstorm caused damage to the siding on our home, RM Banning came through for us in a big way. They are a small, family-owned business that truly takes pride in their customer service and workmanship. From the first call to the final repair, they were responsive, professional, and easy to work with. Their team assessed the damage quickly, explained the process clearly, and completed the repairs efficiently. The siding now looks fantastic — you would never know there had been any storm damage. It’s clear they care about their customers and stand behind their work. We highly recommend RM Banning to anyone looking for quality repairs and a company that genuinely takes pride in what they do."

Thomas J on March 2026


Avatar for Lakewood Home Builders Inc

Lakewood Home Builders Inc

4.81(
254
)
Approved Pro

Lakewood Home Builders Inc

4.81(
254
)
Approved Pro
Customers say: Super punctual
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
40 years of experience

Here at Lakewood Home Builders, we understand that our Reputation relies upon your lasting satisfaction with our Craftsmanship, Products & our Service. In fact, our one goal above all, is Customer Satisfaction. We specialize in major remodeling, additions, interior remodeling of kitchens and bathrooms, basements, and high end screened porches/three season rooms, etc. We work with our partner architects and engineers, or with yours. We are very happy to say that since being placed on Angie's List in 2012, we have received the Super Service Award every year through 2023. Call on us to see how we can help you with the remodeling project you're considering. Also Contact John Stageberg at: 571-275-0922 email: jpstageberg@aol.com phone

"Everything turned out well. The crew worked efficiently and effectively in all the details of the job. Everyone we interacted with was extremely polite and professional."

Sofia P on October 2023

Here at Lakewood Home Builders, we understand that our Reputation relies upon your lasting satisfaction with our Craftsmanship, Products & our Service. In fact, our one goal above all, is Customer Satisfaction. We specialize in major remodeling, additions, interior remodeling of kitchens and bathrooms, basements, and high end screened porches/three season rooms, etc. We work with our partner architects and engineers, or with yours. We are very happy to say that since being placed on Angie's List in 2012, we have received the Super Service Award every year through 2023. Call on us to see how we can help you with the remodeling project you're considering. Also Contact John Stageberg at: 571-275-0922 email: jpstageberg@aol.com phone

"Everything turned out well. The crew worked efficiently and effectively in all the details of the job. Everyone we interacted with was extremely polite and professional."

Sofia P on October 2023


Avatar for Peak Roofing Contractors Inc

Peak Roofing Contractors Inc

4.91(
328
)
Approved Pro

Peak Roofing Contractors Inc

4.91(
328
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
20 years of experience

30 employees. Family owned & operated. Pricing determined on a per job basis. No Travel charges. No Service fees. Fully licensed and insured. Accept all major credit cards. Senior citizen and Military discount of $25 Additional Email address - dawn@peakroofingcontractors.com, info@peakroofingcontractors.com. Additional Contact name - Luther Riggleman. Award winning.

"Great work from onsite quote through installation. I also have a skylight and attic fan so was a little more than roof. All installed expertly. Solid customer service"

Greg G on January 2025

30 employees. Family owned & operated. Pricing determined on a per job basis. No Travel charges. No Service fees. Fully licensed and insured. Accept all major credit cards. Senior citizen and Military discount of $25 Additional Email address - dawn@peakroofingcontractors.com, info@peakroofingcontractors.com. Additional Contact name - Luther Riggleman. Award winning.

"Great work from onsite quote through installation. I also have a skylight and attic fan so was a little more than roof. All installed expertly. Solid customer service"

Greg G on January 2025


Avatar for Marshall Roofing Siding and Windows

Marshall Roofing Siding and Windows

4.90(
778
)
Approved Pro

Marshall Roofing Siding and Windows

4.90(
778
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
46 years of experience

Mar­shall Roof­ing, Siding & Windows is a top roofing, sid­ing, win­dows, and gut­ters com­pany based in North­ern Vir­ginia. Throughout the years providing the highest level of cus­tomer ser­vice and 100% home­owner sat­is­fac­tion has been the pin­na­cle principle at Mar­shall Roof­ing Sid­ing & Win­dows. The belief that each and every home­owner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)

"It was time to replace my roof and I requested several estimates from roofing companies. I selected Marshall Roofing Siding and Windows. It was not the cheapest estimate but the estimate assessment by Mr. Chris Butler, of Marshall Roofing, was the most thorough. Mr. Butler inspected the roof, went into the attic (and found a bathroom vent venting into the attic instead of outside), went into my screened in porch to determine what kind of nails to use so that they would not come through the tongue and groove ceiling and he noticed some old satellite dishes that could be removed. Marshall roofing updated the proposal several times with all of my concerns and additions. This is great customer service! When it came to choosing a shingle color, we struggled to find the right color. Mr. Butler kindly offered to bring out additional shingle samples to us on a Friday afternoon. Again, above and beyond customer service. Mr. Butler also worked with us to find and install an attic fan specifically designed to be quiet when running. The job started promptly on time and was finished in two days. Mr. Butler came out as the job was wrapping up and when the crew finished packing up, on his own, he did a second magnetic sweep around my house to find any nails that may have been missed during the magnetic sweep performed by the crew. Again, great customer service! We are very happy with the workmanship and customer service that we received from Marshall Roofing and would highly recommend their services!!"

David T on April 2023

Mar­shall Roof­ing, Siding & Windows is a top roofing, sid­ing, win­dows, and gut­ters com­pany based in North­ern Vir­ginia. Throughout the years providing the highest level of cus­tomer ser­vice and 100% home­owner sat­is­fac­tion has been the pin­na­cle principle at Mar­shall Roof­ing Sid­ing & Win­dows. The belief that each and every home­owner deserves to receive good value for their money is the driving concept on the functions of the company. **Popular Returning Spring Promotion Coming Soon** (Inquire for additional details)

"It was time to replace my roof and I requested several estimates from roofing companies. I selected Marshall Roofing Siding and Windows. It was not the cheapest estimate but the estimate assessment by Mr. Chris Butler, of Marshall Roofing, was the most thorough. Mr. Butler inspected the roof, went into the attic (and found a bathroom vent venting into the attic instead of outside), went into my screened in porch to determine what kind of nails to use so that they would not come through the tongue and groove ceiling and he noticed some old satellite dishes that could be removed. Marshall roofing updated the proposal several times with all of my concerns and additions. This is great customer service! When it came to choosing a shingle color, we struggled to find the right color. Mr. Butler kindly offered to bring out additional shingle samples to us on a Friday afternoon. Again, above and beyond customer service. Mr. Butler also worked with us to find and install an attic fan specifically designed to be quiet when running. The job started promptly on time and was finished in two days. Mr. Butler came out as the job was wrapping up and when the crew finished packing up, on his own, he did a second magnetic sweep around my house to find any nails that may have been missed during the magnetic sweep performed by the crew. Again, great customer service! We are very happy with the workmanship and customer service that we received from Marshall Roofing and would highly recommend their services!!"

David T on April 2023


Avatar for Amazing Skylights Inc

Amazing Skylights Inc

4.88(
117
)
Approved Pro

Amazing Skylights Inc

4.88(
117
)
Approved Pro
Customers say: Quality work
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
30 years of experience

WHEN IT COMES TO ROOFING, WE HAVE YOU COVERED! OVER 28 YEARS OF EXPERIENCE! We are an award-winning top roofing installer, specializing in full replacement of Asphalt Shingle, Flat Roof, and Standing Seam Metal Roof Systems. With expert installation and high quality materials, we offier Lifetime-limited Warranties AND one of our superivors will be on site for your project from start to finish! We are also a premier dealer and installer for Solatube International, maker of the world-famous Solatube miracle skylight and Solarstar solar-powered attic fan. Solatubes are an affordable way to bring natural light into dark areas of your home - bathrooms, hallways, closets, kitchens – any areas that needs more light. Solatubes cost much less than conventional skylights, save on electric bills, are guaranteed not to leak, come with a 10-year warranty and are eligible for a 30% federal tax credit on parts and labor. Solatube's widely popular Solarstar attic fan literally pays for itself. It costs nothing to operate, installs in one hour, is guaranteed for 10 years and is also eligible for a 30 % federal tax credit. Save money and go Green with our wonderful products and services. We provide exceptional service to our clients and offer them with the best daylighting system in the world, America's number one selling solar attic fan and more. For additional information and to set up estimates and installations give us a call. We specialize in Solatube sales and installation, expert roofing repairs and replacements, and installing exceptional new gutters and gutter guards. Seeing is believing so please visit our beautiful new showroom, where we have a dozen exciting Solatube models on display. Contact us TODAY for your FREE estimate!!

"Fast on site response, expert recommendations, perfectly performed work. HIGHLY Recommended!!!"

Frederick M G on April 2023

WHEN IT COMES TO ROOFING, WE HAVE YOU COVERED! OVER 28 YEARS OF EXPERIENCE! We are an award-winning top roofing installer, specializing in full replacement of Asphalt Shingle, Flat Roof, and Standing Seam Metal Roof Systems. With expert installation and high quality materials, we offier Lifetime-limited Warranties AND one of our superivors will be on site for your project from start to finish! We are also a premier dealer and installer for Solatube International, maker of the world-famous Solatube miracle skylight and Solarstar solar-powered attic fan. Solatubes are an affordable way to bring natural light into dark areas of your home - bathrooms, hallways, closets, kitchens – any areas that needs more light. Solatubes cost much less than conventional skylights, save on electric bills, are guaranteed not to leak, come with a 10-year warranty and are eligible for a 30% federal tax credit on parts and labor. Solatube's widely popular Solarstar attic fan literally pays for itself. It costs nothing to operate, installs in one hour, is guaranteed for 10 years and is also eligible for a 30 % federal tax credit. Save money and go Green with our wonderful products and services. We provide exceptional service to our clients and offer them with the best daylighting system in the world, America's number one selling solar attic fan and more. For additional information and to set up estimates and installations give us a call. We specialize in Solatube sales and installation, expert roofing repairs and replacements, and installing exceptional new gutters and gutter guards. Seeing is believing so please visit our beautiful new showroom, where we have a dozen exciting Solatube models on display. Contact us TODAY for your FREE estimate!!

"Fast on site response, expert recommendations, perfectly performed work. HIGHLY Recommended!!!"

Frederick M G on April 2023


Keith Roofing

4.87(
313
)
Approved Pro

Keith Roofing

4.87(
313
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
66 years of experience

Keith Roofing has been serving residential, commercial, and industrial customers since 1960. We've built our reputation on providing a high-quality finished product that will last for years! Count on our team for honesty and integrity when it comes to serving the needs of home and business owners in the DC area. Because each roof provides different challenges, such as the pitch of the roof, type of shingles, the gutter system, and number of valleys, Keith Roofing offers thorough on-site inspections and true estimates of your roofing repair needs. WE are based in and only service Washington,DC- SO we specialize on working on these Beautiful Historic Homes we have here in the District.

"They couldn't have been more responsive or helpful. Customer satisfaction was clearly their top priority. It was literally some of the best customer service I have ever experienced! I could not recommend them more!"

Brent L on October 2020

Keith Roofing has been serving residential, commercial, and industrial customers since 1960. We've built our reputation on providing a high-quality finished product that will last for years! Count on our team for honesty and integrity when it comes to serving the needs of home and business owners in the DC area. Because each roof provides different challenges, such as the pitch of the roof, type of shingles, the gutter system, and number of valleys, Keith Roofing offers thorough on-site inspections and true estimates of your roofing repair needs. WE are based in and only service Washington,DC- SO we specialize on working on these Beautiful Historic Homes we have here in the District.

"They couldn't have been more responsive or helpful. Customer satisfaction was clearly their top priority. It was literally some of the best customer service I have ever experienced! I could not recommend them more!"

Brent L on October 2020


Avatar for Presidential Exteriors LLC

Presidential Exteriors LLC

4.89(
150
)
Approved Pro

Presidential Exteriors LLC

4.89(
150
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
11 years of experience

Licensed in MD, DC and VA, Presidential Exteriors is your one stop solution for any exterior remodeling needs. Our award winning products and experienced installers will ensure that your home is a Presidential Home. We look forward to showing you how our customer centric approach and commitment to communication guarantees satisfaction the first time, every time.

"We had two garage doors replaced and could not be happier. Angel did the install and did an incredible job. Angel is the Michelangelo of garage doors. The quality of work was superb. Thanks also to Vick and Alex too. This is a first rate company that will exceed your every expectation!"

Jeff F on February 2026

Licensed in MD, DC and VA, Presidential Exteriors is your one stop solution for any exterior remodeling needs. Our award winning products and experienced installers will ensure that your home is a Presidential Home. We look forward to showing you how our customer centric approach and commitment to communication guarantees satisfaction the first time, every time.

"We had two garage doors replaced and could not be happier. Angel did the install and did an incredible job. Angel is the Michelangelo of garage doors. The quality of work was superb. Thanks also to Vick and Alex too. This is a first rate company that will exceed your every expectation!"

Jeff F on February 2026

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FAQs for natural slate roofing installation and replacement projects in Alexandria, VA

A slate roof features thin tiles of natural stone installed over a solid deck and underlayment. Formed under intense heat and pressure, slate is exceptionally durable and delivers a distinctive, high-end look. Because the material weighs far more than asphalt, most homes need added structural support before installation. 

While upfront costs are higher and routine inspections are a must, many homeowners choose slate for its unmatched longevity and curb appeal.

Slate stands out for its 50- to 200-year life span, low maintenance, and classic aesthetic. It’s fire-resistant, energy-efficient, and often boosts resale value. 

On the flip side, slate runs far more per square foot than asphalt, weighs up to four times as much, and demands a contractor who specializes in the material. Tiles can crack on impact, and repairs cost more because the work is slow and precise. If your budget and structure can handle it, slate delivers top-tier performance for generations.

Natural and synthetic slate aim for a premium, stone-like appearance, whereas asphalt focuses on affordability. Real slate runs $10 to $30 per square foot installed and lasts up to 200 years; synthetic slate costs $10 to $15 and tops out at 50 to 100 years. 

Standard asphalt averages $3 to $8 per square foot and needs replacement every 20 to 30 years. If you want the slate look without the full price tag—or extra roof weight—synthetic is a solid middle ground.

With routine inspections and prompt repairs, a natural slate roof can last well beyond 100 years; some hard-slate installations reach the 200-year mark. Soft slate falls in the 50- to 125-year range, and synthetic products last 50 to 100 years. 

Remember, flashing, fasteners, and the underlying structure may need attention sooner than the stone itself. Severe hail or fallen limbs can also shorten life span, so schedule periodic checkups with a slate-qualified roofer.

If you plan to stay in your home long term—or want a standout selling point—slate delivers strong value. Although installation costs are high, owners often recoup 60% to 70% at resale and enjoy lower replacement cycles than asphalt. The stone’s durability, energy efficiency, and timeless curb appeal also appeal to eco-conscious buyers because fewer roofs end up in landfills. Just be sure your framing can handle the weight and that you budget for occasional specialty repairs.

Skip the DIY climb if you have a slate roof. Slate may be tough against the weather, but a single misplaced step can crack a tile and create a leak path. The surface also turns slick when wet, upping the risk of injury. Professional crews use staging and hook ladders that spread weight across multiple slates, protecting both the roof and the worker. To inspect or repair slate, call a roofer who specializes in the material.

The Alexandria, VA homeowners’ guide to natural slate roofing installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.