
Get matched with top deck and porch pros in Frederick, MD
There are 89 highly-rated local deck and porch pros.
Need a pro for your deck and porch service project in Frederick, MD?
TRUSTED BY FREDERICK, MD HOMEOWNERS
4.4
Average homeowner rating285
Verified deck and porch services reviews
Verified Reviews for Deck And Porch Service pros in Frederick, MD
*The Angi rating for Deck And Porch Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Deck And Porch Service needs.
*The HomeAdvisor rating for Deck And Porch Service companies in Frederick, MD is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Deck And Porch Service needs.
Last update on October 06, 2025
Find Deck and porch pros in Frederick

Great Falls Stone
Great Falls Stone
Great Falls Stone is a Family owned and operated business that has been serving Maryland, Virginia & DC for the past 30 years. We use a variety of Natural stone and brick products. We can give you a free estimate, we will be happy to advise you on all your needs. Our service is excellent and our prices are competitive. Our experienced professional's can help you select just the right product to complete any job. Call us today at (301) 253-6633
"Highly recommend. Timely and reasonable estimate. Very knowledgeable on how to do the repairs. Once schedule they were there on time and finished in estimated time. Great result!"
Ed N on May 2023
Great Falls Stone is a Family owned and operated business that has been serving Maryland, Virginia & DC for the past 30 years. We use a variety of Natural stone and brick products. We can give you a free estimate, we will be happy to advise you on all your needs. Our service is excellent and our prices are competitive. Our experienced professional's can help you select just the right product to complete any job. Call us today at (301) 253-6633
"Highly recommend. Timely and reasonable estimate. Very knowledgeable on how to do the repairs. Once schedule they were there on time and finished in estimated time. Great result!"
Ed N on May 2023
Remodeling Depot
Remodeling Depot
Remodeling Depot, LLC, proudly serves its customers with pride, integrity and attention to the details that matter most to you. We specialize in a variety of installs and repairs for both residential and light commercial projects. This is one of the many things that sets us apart from the rest. We are locally owned and operated and treat each project as if it were our very own. Give us a call today!
Remodeling Depot, LLC, proudly serves its customers with pride, integrity and attention to the details that matter most to you. We specialize in a variety of installs and repairs for both residential and light commercial projects. This is one of the many things that sets us apart from the rest. We are locally owned and operated and treat each project as if it were our very own. Give us a call today!

Hands and Hardscapes LLC
Hands and Hardscapes LLC
Custom Decks, Patios & Screen Rooms to Enhance Your Life and Home with high quality of work and satisfaction
"I’m very pleased with Edwin’s work ethics, since our first meeting until the end of the project he kept me informed of all aspects of the project, his attention to detail and professionalism made me feel very comfortable. I appreciate his input on what materials will work best for my patio. Everything that he mentioned in the contract was completed and well done. Thank you Edwin for making my wife’s dream patio come true."
Ramon H on May 2025
Custom Decks, Patios & Screen Rooms to Enhance Your Life and Home with high quality of work and satisfaction
"I’m very pleased with Edwin’s work ethics, since our first meeting until the end of the project he kept me informed of all aspects of the project, his attention to detail and professionalism made me feel very comfortable. I appreciate his input on what materials will work best for my patio. Everything that he mentioned in the contract was completed and well done. Thank you Edwin for making my wife’s dream patio come true."
Ramon H on May 2025
Homecraft Builders
Homecraft Builders
Homecraft is a 2nd generation, family-owned remodeler specializing in decks, roofing, siding, windows, and finished basements. We handle all steps of a project from planning, to permits, to building. When you partner with Homecraft you receive the finest materials - custom cut on site. This provides flexibility in design and perfection in construction. Since '96, homeowners have thanked us for establishing a company that cares. We take your ideas, add our building experience and together create a custom project that extends your living space and adds value to your home. Award Winning.
"Had an excellent experience working with Jeff on my deck project. The work is top notch and exactly what I wanted for a fair price. No BS up sales or any of that. Will definitely look to rehired for any future work."
Gregory B on January 2025
Homecraft is a 2nd generation, family-owned remodeler specializing in decks, roofing, siding, windows, and finished basements. We handle all steps of a project from planning, to permits, to building. When you partner with Homecraft you receive the finest materials - custom cut on site. This provides flexibility in design and perfection in construction. Since '96, homeowners have thanked us for establishing a company that cares. We take your ideas, add our building experience and together create a custom project that extends your living space and adds value to your home. Award Winning.
"Had an excellent experience working with Jeff on my deck project. The work is top notch and exactly what I wanted for a fair price. No BS up sales or any of that. Will definitely look to rehired for any future work."
Gregory B on January 2025

SBC Outdoor Services
SBC Outdoor Services
OVER 100 YEARS COMBINED EXPERIENCE AS YOU PATIO AND HARDSCAPE EXPERTS! SBC Outdoor Services was founded in 2015 by Brad Crist. Brad had over 15 years of experience in the industry and wanted to create a landscaping company that could hold true to the concept of “quality landscaping.” Ever since then we've been constantly growing as a high-end hardscape, landscape design, and commercial maintenance business. Over the course of our existence, we've earned a great reputation for quality service and we aim to not just maintain our reputation for excellence but to constantly improve it. That's why we only hire the best of the best. Our management team alone has over 30 years of experience in the industry and members of management used to maintain the White House. The rest of our team is similarly qualified and has over 100 years of combined experience. At SBC Outdoor Services we believe that landscaping is an art, not just a skill. We not only teach our employees proper installation methods but also encourage them to take initiative and to completely pour their imagination and skill into their work. Our design and installation divisions make sure that the product will be very functional as well as attractive while our maintenance division employees take great pride in the ongoing beauty of your property.
"I hired them to do landscaping and a driveway, my drive way is crumbling and have holes in it."
Cynthia R on December 2023
OVER 100 YEARS COMBINED EXPERIENCE AS YOU PATIO AND HARDSCAPE EXPERTS! SBC Outdoor Services was founded in 2015 by Brad Crist. Brad had over 15 years of experience in the industry and wanted to create a landscaping company that could hold true to the concept of “quality landscaping.” Ever since then we've been constantly growing as a high-end hardscape, landscape design, and commercial maintenance business. Over the course of our existence, we've earned a great reputation for quality service and we aim to not just maintain our reputation for excellence but to constantly improve it. That's why we only hire the best of the best. Our management team alone has over 30 years of experience in the industry and members of management used to maintain the White House. The rest of our team is similarly qualified and has over 100 years of combined experience. At SBC Outdoor Services we believe that landscaping is an art, not just a skill. We not only teach our employees proper installation methods but also encourage them to take initiative and to completely pour their imagination and skill into their work. Our design and installation divisions make sure that the product will be very functional as well as attractive while our maintenance division employees take great pride in the ongoing beauty of your property.
"I hired them to do landscaping and a driveway, my drive way is crumbling and have holes in it."
Cynthia R on December 2023

JW Home Improvement
JW Home Improvement
JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!
"Thomas M was an excellent technician and did great work fixing all the basement windows around the house. These windows are difficult to find a replacement but he was able to repair and repaint them. The other technician was Pablo He worked on caulking all the windows around the house and he did some filling work on the garage sliding doors You did a good job, but Pablo left his trash around and didn’t pick up after himself so Thomas M and I did that on the third day. It took three days total, but it was two men for two days and one man for a 3/4 of a day actually. Although I’ll probably get charged for a full day, since it went past noon. The labor portion is the most expensive and a little higher than I initially anticipated. So, I was hoping for a quicker turnaround, but overall quality work was completed. I would highly recommend Thomas M as a technician to do future work. He’s very knowledgeable, friendly and does a great job. I would hire again but include more details in the contract language."
Stephen B on July 2025
JWHI provides world-class customer service with consistent and superior workmanship. We strive to be the trusted market leader in the home improvement industry. Proudly, we are Super Service Award Winner for over a decade, and we plan to keep that streak going! Contact us today to discuss your next handyman or remodeling project. Our mission is to provide you with a happy home improvement experience!
"Thomas M was an excellent technician and did great work fixing all the basement windows around the house. These windows are difficult to find a replacement but he was able to repair and repaint them. The other technician was Pablo He worked on caulking all the windows around the house and he did some filling work on the garage sliding doors You did a good job, but Pablo left his trash around and didn’t pick up after himself so Thomas M and I did that on the third day. It took three days total, but it was two men for two days and one man for a 3/4 of a day actually. Although I’ll probably get charged for a full day, since it went past noon. The labor portion is the most expensive and a little higher than I initially anticipated. So, I was hoping for a quicker turnaround, but overall quality work was completed. I would highly recommend Thomas M as a technician to do future work. He’s very knowledgeable, friendly and does a great job. I would hire again but include more details in the contract language."
Stephen B on July 2025
Joist Construction LLC
Joist Construction LLC
Joist construction is a company committed to the quality and agility of its services, Keeping the dates of your schedule transparently and efficiently. The contact is direct with the company's founders. JOIST is focused on renovating and improving the most beautiful points of your residence, such as Decks, balconies, gazebos, fences, patios, and everything else that our customers need. We serve mainly in the Maryland, Virginia and DC areas, but if you are not from these areas, please contact us to try to make your project viable. If you planning to enlighten your patio or just perform a small repair on your deck, we are the company you are looking for, count on JOIST construction for a new home! Get in touch now!
"Very good work, job done perfectly"
Gunnar K on June 2025
Joist construction is a company committed to the quality and agility of its services, Keeping the dates of your schedule transparently and efficiently. The contact is direct with the company's founders. JOIST is focused on renovating and improving the most beautiful points of your residence, such as Decks, balconies, gazebos, fences, patios, and everything else that our customers need. We serve mainly in the Maryland, Virginia and DC areas, but if you are not from these areas, please contact us to try to make your project viable. If you planning to enlighten your patio or just perform a small repair on your deck, we are the company you are looking for, count on JOIST construction for a new home! Get in touch now!
"Very good work, job done perfectly"
Gunnar K on June 2025

Deck and Shed Pros
Deck and Shed Pros
Deck and Shed Pros is a locally owned and operated company dedicated to providing our customers with the finest quality Deck and Shed construction possible. We employ the most skilled craftsmen, take pride in our work, use the finest materials available, and are always striving to improve. We at Deck and Shed Pros understand we are building a structure that will be enjoyed for many years to come and there is no need to compromise with your deck. Our thoughtful and knowledgeable sales team will work with you to customize your dream deck and have many solutions that will help provide safety, storage, economy, and utility for your deck. We are a fully insured company. Visit our website http://deckandshedpros.com
"We hired Deck & Shed Pros for a diverse set of projects: a custom-built shed, replacement of our window wells, and some repairs to our stone patio. And we couldn’t be happier with how all of them turned out! During the contract phase, Jim, Jen and Victor were incredibly patient in answering all our questions. They were also very flexible on any design issues, ensuring that the projects could be done exactly how we wanted them. For example, they were able to use the same brand and color of vinyl siding on the shed that we recently had installed on our addition (so now they match perfectly), and they adjusted their plans for the window wells to accommodate our chosen style of wells/covers and the necessary depth for digging them out. When Victor and his crew came to install the window wells and make some patio repairs, the work was done beautifully and efficiently. The crew worked really hard, and they cleaned up the yard afterward so there was no debris left behind. One basement window pane got cracked as they were removing the old brick-and-concrete window wells, and they did a wonderful job of replacing the whole window with plexiglass (which was a painstaking task given the age of the window and how it was installed). People don’t usually think of window wells as beautiful, but the new ones that they installed for us (galvanized steel with polycarbonate covers) have totally transformed and modernized that part of the house. Victor and his team were so friendly and easy to work with. They also poured the concrete pad for our shed, making sure it was smooth and level—and in the exact location that we wanted. Victor even spread grass seed and straw over any disturbed areas. When the shed was ready for installation, the manufacturer’s crew came out to build it on-site. They were super professional, and the whole thing was done in about 6 hours. It’s made of high-quality materials and it’s gorgeous to look at—really complements the style of our home. A couple items had been missing from the shed kit, so someone came right out a few days later to make the necessary fixes. When we saw that it needed a single step under the side door, Jim had someone here within about a week to build one from scratch. Everyone was very prompt and responsive to any issues that came up. Through all of it, the communication with Jen and Jim was outstanding—they were always reachable by phone or email, and Jim would send out email updates every Friday, to keep us apprised of any developments or changes to the timeframe. I highly recommend Deck & Shed Pros for sheds, decks, or any other outside contracting work. (If you’re not sure whether it’s something they do, just ask! We didn’t know what kind of company to hire for the window wells, but they got it done with no problem.) We are thrilled with the results and wouldn’t hesitate to call them again for other jobs in the future."
Michael P on September 2023
Deck and Shed Pros is a locally owned and operated company dedicated to providing our customers with the finest quality Deck and Shed construction possible. We employ the most skilled craftsmen, take pride in our work, use the finest materials available, and are always striving to improve. We at Deck and Shed Pros understand we are building a structure that will be enjoyed for many years to come and there is no need to compromise with your deck. Our thoughtful and knowledgeable sales team will work with you to customize your dream deck and have many solutions that will help provide safety, storage, economy, and utility for your deck. We are a fully insured company. Visit our website http://deckandshedpros.com
"We hired Deck & Shed Pros for a diverse set of projects: a custom-built shed, replacement of our window wells, and some repairs to our stone patio. And we couldn’t be happier with how all of them turned out! During the contract phase, Jim, Jen and Victor were incredibly patient in answering all our questions. They were also very flexible on any design issues, ensuring that the projects could be done exactly how we wanted them. For example, they were able to use the same brand and color of vinyl siding on the shed that we recently had installed on our addition (so now they match perfectly), and they adjusted their plans for the window wells to accommodate our chosen style of wells/covers and the necessary depth for digging them out. When Victor and his crew came to install the window wells and make some patio repairs, the work was done beautifully and efficiently. The crew worked really hard, and they cleaned up the yard afterward so there was no debris left behind. One basement window pane got cracked as they were removing the old brick-and-concrete window wells, and they did a wonderful job of replacing the whole window with plexiglass (which was a painstaking task given the age of the window and how it was installed). People don’t usually think of window wells as beautiful, but the new ones that they installed for us (galvanized steel with polycarbonate covers) have totally transformed and modernized that part of the house. Victor and his team were so friendly and easy to work with. They also poured the concrete pad for our shed, making sure it was smooth and level—and in the exact location that we wanted. Victor even spread grass seed and straw over any disturbed areas. When the shed was ready for installation, the manufacturer’s crew came out to build it on-site. They were super professional, and the whole thing was done in about 6 hours. It’s made of high-quality materials and it’s gorgeous to look at—really complements the style of our home. A couple items had been missing from the shed kit, so someone came right out a few days later to make the necessary fixes. When we saw that it needed a single step under the side door, Jim had someone here within about a week to build one from scratch. Everyone was very prompt and responsive to any issues that came up. Through all of it, the communication with Jen and Jim was outstanding—they were always reachable by phone or email, and Jim would send out email updates every Friday, to keep us apprised of any developments or changes to the timeframe. I highly recommend Deck & Shed Pros for sheds, decks, or any other outside contracting work. (If you’re not sure whether it’s something they do, just ask! We didn’t know what kind of company to hire for the window wells, but they got it done with no problem.) We are thrilled with the results and wouldn’t hesitate to call them again for other jobs in the future."
Michael P on September 2023

TrueDecks
TrueDecks
DeckMaster Inc. is now operating under a new revamped trademark name TrueDecks®. Same family-owned and operated business, same services, same quality, a new unique nationwide name. We have been in business for over 20 yrs providing deck, fence, patio construction, restoration and maintenance services. We are also the founders of the PressureLess cleaning & preservation system using a low pressure washing method. We are also specialize in all types of composite (Trex, Fiberon, Timbertech, Azek,etc) and exotic materials. 30 Employees. Cost is determined by the job. No travel charges. Additional phone - 240-685-1730
"We have been so pleased with the whole process. From the estimate with Fernando, to the professional and friendly Office staff, to Selvin and his crew who rebuilt the deck. The communication was timely and easy. You all made making payments simple. The quality of the materials and workmanship were beyond expected. The only delay was due to me not reading an email so I apologize for that. Selvin and his crew were so nice and professional. There were no delays. Even the clean up was done within 24 hrs of the completion. Our deck is now beautiful but more importantly, safe to use. Oh, and the stair lights are amazing!! Thank you all for a great experience."
Lisa G on June 2025
DeckMaster Inc. is now operating under a new revamped trademark name TrueDecks®. Same family-owned and operated business, same services, same quality, a new unique nationwide name. We have been in business for over 20 yrs providing deck, fence, patio construction, restoration and maintenance services. We are also the founders of the PressureLess cleaning & preservation system using a low pressure washing method. We are also specialize in all types of composite (Trex, Fiberon, Timbertech, Azek,etc) and exotic materials. 30 Employees. Cost is determined by the job. No travel charges. Additional phone - 240-685-1730
"We have been so pleased with the whole process. From the estimate with Fernando, to the professional and friendly Office staff, to Selvin and his crew who rebuilt the deck. The communication was timely and easy. You all made making payments simple. The quality of the materials and workmanship were beyond expected. The only delay was due to me not reading an email so I apologize for that. Selvin and his crew were so nice and professional. There were no delays. Even the clean up was done within 24 hrs of the completion. Our deck is now beautiful but more importantly, safe to use. Oh, and the stair lights are amazing!! Thank you all for a great experience."
Lisa G on June 2025

FA Outdoor Spaces
FA Outdoor Spaces
FA Outdoor Spaces is a large exterior home improvement company servicing Northern Virginia, DC and Maryland. With roots in Design and Build having serviced our clients at our sister company FA Design Build, we bring 45+ years of professionalism to every project we undertake. We have teams dedicated to each region ready to serve you. We specialize in all things Outdoors, like Trex & Timber Tech composite decking for new builds, deck reflooring/rerailing, deck enclosures, three season rooms, sunrooms, patios and fencing — all backed with a lifetime installation warranty you won’t find anywhere else.
"We have been planning to upgrade our deck from lumber to composite TREX for quite some time and FA Outdoor Spaces was the only company that offers three options for decking- refloor, facelift and new deck. Brandon Campbell and Brandon Wheatley who assisted him, understood what we were looking for an provided a proposal to upgrade the flooring, railing caps and steps by replacing the wooden boards with TREX , reinforce the foundation of the deck and steps, and re-finish the existing railings to retain the original aesthetic of the deck with a modern flooring. The cost was reasonable and there was clear communication on necessary safety improvements required to make the deck last for a long time. Veronika as project manager ensured that the work was planned and scheduled for an on time completion. Veronika’s communications were timely and detailed. She made sure we were fully satisfied with the finished work and took the extra steps to ensure the end result was perfect. The crew is very knowledgeable and hardworking and they worked through some bad weather days safely to get the work done. Very satisfied and highly recommended."
Pankaj K on July 2025
FA Outdoor Spaces is a large exterior home improvement company servicing Northern Virginia, DC and Maryland. With roots in Design and Build having serviced our clients at our sister company FA Design Build, we bring 45+ years of professionalism to every project we undertake. We have teams dedicated to each region ready to serve you. We specialize in all things Outdoors, like Trex & Timber Tech composite decking for new builds, deck reflooring/rerailing, deck enclosures, three season rooms, sunrooms, patios and fencing — all backed with a lifetime installation warranty you won’t find anywhere else.
"We have been planning to upgrade our deck from lumber to composite TREX for quite some time and FA Outdoor Spaces was the only company that offers three options for decking- refloor, facelift and new deck. Brandon Campbell and Brandon Wheatley who assisted him, understood what we were looking for an provided a proposal to upgrade the flooring, railing caps and steps by replacing the wooden boards with TREX , reinforce the foundation of the deck and steps, and re-finish the existing railings to retain the original aesthetic of the deck with a modern flooring. The cost was reasonable and there was clear communication on necessary safety improvements required to make the deck last for a long time. Veronika as project manager ensured that the work was planned and scheduled for an on time completion. Veronika’s communications were timely and detailed. She made sure we were fully satisfied with the finished work and took the extra steps to ensure the end result was perfect. The crew is very knowledgeable and hardworking and they worked through some bad weather days safely to get the work done. Very satisfied and highly recommended."
Pankaj K on July 2025
FAQs for deck and porch service projects in Frederick, MD
While the terms deck and porch are often used interchangeably, they are two distinct home features. Porches offer a roof that protects from the elements when coming and going from the house. Generally, porches are on the front of your home. On the other hand, decks are generally built in the backyard of a home and offer no roof or protection from the elements, like rain or snow. Porches typically require less maintenance and upkeep thanks to the roof, but both features require regular cleaning and repairs to maintain good condition.
The cost to build a deck is $8,025 on average. However, this cost can range anywhere from $1,500 to $22,000, depending on multiple factors, such as size, materials, and deck type. You can expect to pay $30 to $60 per square foot when building a new deck.
Cedar decks are often the most cost-effective option, ranging from $4 to $9 per square foot for materials. However, pressure-treated decking, which is resistant to rot, is more expensive, ranging from $15 to $25 per square foot for materials.
Yes, adding either a porch or deck (or both!) to your home can add value. Both of these features add character and curb appeal to your home, but even more importantly, they add an element of convenience. Plus, these home features create additional square footage of living space to your home. Adding a porch onto your home can give you a return on investment (ROI) of up to 84%, while adding a deck can provide an ROI of up to 80%.
Several types of porches are available to meet your needs and style preferences. Some common porch types include:
Porticos are essentially a roof over a walkway leading to the home's front entrance.
Sunrooms are closed-in porches that are an extension of the house with glass or plastic panels that allow optimal sunlight.
Wraparound porches extend around the entire home, or at least the front and one side, and offer multiple entrances to the house.
Back porches are an extension of the home’s floor into the outdoors. These offer more protection and privacy than a deck.
As with patios, there are many types of deck choices to choose from to add personalization to your home. Some common deck options include:
Attached decks are anchored to the home and include simple ground-level options or multi-level structures with stairways and separate landings.
Detached island decks are not attached to the home; they’re a freestanding structure in the yard.
Wraparound decks connect the back of the house with at least one other side and often are built with railings for safety.
Multi-level decks connect your deck through varying levels of elevation, featuring landings that are attached to stairs.
The Frederick, MD homeowners’ guide to deck and porch services
From average costs to expert advice, get all the answers you need to get your job done.
Trying to calculate your pool deck cost? Our guide walks you through both inground and above-ground pool deck cost factors, such as material, location, and labor rates.
Are your porch columns old or simply unsightly? It might be time to refresh them. Here's a breakdown of the cost of replacing porch columns.
Flagstone patio costs vary by the size, material type, labor, and more. Stay tuned to see how much your flagstone patio could cost.
Homeowners often wonder what causes deck stain to peel. Discover the best ways to address deck peeling issues.
A deck railing provides safety and aesthetic appeal to an elevated deck. Learn how to build or replace a wooden deck railing using this step-by-step guide.
Choosing from all the types of deck railing can be overwhelming. Check out the pros and cons of each so you can pinpoint the best option for you.
- Urbana, MD Deck and porch pros
- Walkersville, MD Deck and porch pros
- Ballenger Creek, MD Deck and porch pros
- Braddock Heights, MD Deck and porch pros
- New Market, MD Deck and porch pros
- Linganore, MD Deck and porch pros
- Middletown, MD Deck and porch pros
- Buckeystown, MD Deck and porch pros
- Ijamsville, MD Deck and porch pros
- Woodsboro, MD Deck and porch pros
- Libertytown, MD Deck and porch pros
- Monrovia, MD Deck and porch pros
- Jefferson, MD Deck and porch pros
- Adamstown, MD Deck and porch pros
- Myersville, MD Deck and porch pros
- Thurmont, MD Deck and porch pros
- Point Of Rocks, MD Deck and porch pros
- Rocky Ridge, MD Deck and porch pros
- Union Bridge, MD Deck and porch pros
- Clarksburg, MD Deck and porch pros
- Mount Airy, MD Deck and porch pros
- Smithsburg, MD Deck and porch pros
- Keymar, MD Deck and porch pros
- Damascus, MD Deck and porch pros
- Brunswick, MD Deck and porch pros
- Knoxville, MD Deck and porch pros
- Dickerson, MD Deck and porch pros
- Boonsboro, MD Deck and porch pros
- Keedysville, MD Deck and porch pros
- Boyds, MD Deck and porch pros
- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
- 🏠 "Repair shingles on an asphalt roof"