RoofViews

Your Home

Top Six Common Roof Types & How to Pick One for Your Home

By Dawn Killough

December 22, 2022

One of the six most common roof types displayed on a newly designed modern home in the suburbs.

It's easy to think that there are as many roof types as there are buildings. In truth, there are only a few standard kinds and variations are made by combinations of these. The type of roof you select for your home or addition will influence a lot of other factors, including overall cost, what materials you can use, and how much of the roof is visible from the street.

With this in mind, here are the six main roof types. Each of these basic classes of roof system can be mixed and matched to create a unique look based on the style you prefer.

1. Gable

Gable roofs — the most common roof type — have a single peak and two sloped sides, with the ends forming an "A" shape when seen side-on. Gable roofs tend to be popular because the sloped sides shed water and snow very well.

A gable roof is easy to install, more affordable than most, and provides the space needed for adequate attic ventilation. Because its sloped sides prevent water-pooling and accumulation, this roof type is well-suited to wet climates.

When selecting a material for a gable roof, keep in mind that each of the two large sloped roof faces presents a lot of roofing material to the viewer. That means that, depending on your home's orientation, quite a bit of your roof may be visible from the street. If this is the case, you'll want to make sure you select the material and color that best complement your home's décor and style. Gable roofs can work with most roofing materials, including asphalt shingles and shakes.

2. Hip

Hip roofs are second in popularity to gable roofs. A hip roof has slopes on four sides, making it resemble a pyramid if used on a square building.

Hip roofs are structurally sound and can carry heavier loads compared with other roof styles. They are often used in areas where heavy snow is a concern. However, because they need to be engineered, these roofs are more expensive to build. They also leave less room in the attic for ventilation, which can affect your roof's performance.

Most hip roofs don't show much from the street view. However, if your roof has a steep, more visible slope, make sure that the roofing material matches your home's aesthetic. Most roofing materials are suitable for hip roofs.

3. Gambrel

A gambrel roof is a traditional barn roof. It has slopes on two sides; each side has a lower-sloped section on top and a steeper section on the bottom.

Gambrels provide great protection due to their steep slopes, which also allow for more attic space. Their construction requires fewer beams and columns than other roofs, which reduces the materials needed and installation cost.

Gambrel roofs feature a great deal of visible roof surface, so choosing an appropriate shingle and color that go with your home is key. You can use a variety of roofing material types on a gambrel roof.

4. Mansard

Mansard roofs are similar to gambrels, but they have slopes on all four sides. Each side includes two sloped sections, with the steeper section on the bottom. These roofs often feature dormer windows on the lower sections. Dormers provide added light to the upper floors and the attic, increasing your home's available living space.

It can be easier to construct additions to a building with a mansard roof, since the upper section is almost vertical. As with gambrel roofs, they provide excellent weather protection due to their steep slopes.

A large portion of a mansard roof will be visible from the street, so choose your roofing style and colors carefully to ensure that they fit the rest of your home's design. Mansard roofs work well with most roofing material types.

5. Shed

While a shed or lean-to type roof isn't that common, they are beginning to gain popularity within modern home design. This roof only has one slope or face, and there's no point or apex. Many modern homes use this stark shape of roof as part of a geometric style.

Depending on the orientation of the slope and the steepness, aesthetics might not matter as much, since not much of the roof may be visible from the street. In this case, you can choose the best roofing materials based solely on how well they fit your climate.

6. Flat

Flat roofs are occasionally seen on residential buildings, but they're more common in commercial and industrial construction. These roofs usually use a membrane roofing system, as opposed to the asphalt shingles found on most homes.

Even a flat roof has some slope to allow water to drain. However, having such a low slope means that flat roofs are often vulnerable to leaks and standing water.

As the surface of a flat roof can't be seen from the ground, the roof color and style likely don't matter much from an aesthetic viewpoint. Many buildings feature a white roof to reflect sunlight and heat during the summer months. Membrane roofing systems come in a variety of materials, including PVC, TPO, and modified bitumen.

Choosing a roof type for your home or addition hinges on the shape of your home's floor plan, the climate, and your roof ventilation requirements. It pays to consult with an architect or engineer before deciding what roof type to use — you can contact your local GAF certified contractor* for professional recommendations to meet your needs.


*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products.

About the Author

Dawn Killough is a freelance writer in the construction, finance, and accounting fields. She is the author of an ebook about green building and writes for construction tech and green building websites. She lives in Salem, Oregon with her husband and four cats.

Related Articles

Una casa grande con tejas para techo oscuras
Your Home

Tejas GAF Reflector Series: las tejas reflectantes más oscuras del mercado

La línea más nueva de tejas asfálticas reflectantes diseñadas por GAF, Timberline HDZ® Reflector Series, puede brindarle a su hogar más protección contra la intemperie y un atractivo aspecto exterior.Las tejas para techado, disponibles en elegantes colores oscuros, crean una estética atractiva que puede usarse para cumplir con ciertos requisitos de códigos relacionados con la reflectancia. Esto es particularmente importante en California, donde los códigos edilicios estatales, como el Título 24, y las normativas locales, como el Código Edilicio Ecológico del condado de Los Ángeles, requieren una reflectancia específica en los techos para ayudar a conservar energía.A continuación le mostramos lo que debe saber sobre estas nuevas tejas reflectantes, incluida su tecnología exclusiva y el potencial para permitir ahorros en costos de energía.Características de las tejas Reflector SeriesLas tejas Timberline HDZ® RS tienen varios puntos fuertes que les permiten destacarse respecto de la competencia. Gracias a su diseño, las características de las tejas de techado mejoran la reflectancia y ofrecen protección adicional contra las algas y el viento.Gránulos EcoDark®Las tejas Timberline HDZ® RS cuentan con gránulos EcoDark®, una tecnología con una nueva fórmula que ofrece colores oscuros ricos y profundos sin perder reflectancia. Entre los colores disponibles se incluye carbón, que actualmente es el color más oscuro con alta reflectancia en California, y varias otras combinaciones, cada una con un aspecto completo y dimensional.Tecnología LayerLock®Las tejas asfálticas tradicionales tienen varias capas de material conectado con adhesivo o fijadores mecánicos. Con la tecnología GAF LayerLock®, las capas de tejas se fijan mecánicamente. Esto ofrece protección adicional contra el viento, que puede desprender las tejas del techo.Gracias a la tecnología, GAF puede afirmar que es pionero en otra cosa en la industria: ofrecer una garantía sin límite de viento máximo**.Cuatro beneficios de las tejas Reflector Series para propietariosLas tejas Timberline HDZ® RS le ofrecen varios beneficios.1. Cumplimiento de los códigos y reducción del costo de refrigeraciónEn California, las tejas RS pueden usarse para cumplir los requisitos de reflectancia solar de edificios residenciales altos, según se indica en el título 24, parte 6 del Código de Regulaciones de California de 2022 y el Código de Estándares Edilicios Ecológicos del condado de Los Ángeles. Ambos códigos fijan un índice de reflectancia mínima, denominado índice reflectivo solar (SRI, solar reflective index), que mide la capacidad de un material para reflejar el sol y la luz solar. Cuanto menor sea el valor de SRI (de 0 a 100), más caliente será un material bajo la luz solar. Cuanto mayor el valor, más frío será el material.Las tejas con un SRI más alto, como GAF Timberline HDZ® RS, reflejan más luz solar, ayudan a reducir la temperatura interna y la energía (y los costos) que se necesita para refrigerar su hogar.2. Colores oscuros y ricos que combinan con cualquier estilo o estéticaYa no tendrá que elegir entre colores oscuros, ricos y profundos, populares en la arquitectura moderna, y el cumplimiento de los requisitos de reflectancia. Además de ofrecer una opción en color carbón, el color de alta reflectancia más oscuro, los otros colores de la línea cuentan con mezclas de colores GAF High Definition® que le brindan a las tejas Reflector Series un aspecto dimensional similar a las tejas de madera.3. Protección contra algas verde-azuladasLas manchas de algas verde-azuladas, una cianobacteria llamada gloeocapsa magma, pueden reducir el valor de su hogar. Las tejas HDZ® RS incluyen la tecnología contra las algas GAF Time-Release, que utiliza cápsulas especialmente diseñadas impregnadas con miles de partículas de cobre. El cobre se libera de manera uniforme a lo largo del tiempo y evita el crecimiento de las algas durante muchos años. Gracias a esta tecnología, GAF ofrece una garantía limitada de protección contra las algas StainGuard Plus™ de 25 años*, que es especialmente beneficiosa en climas cálidos, húmedos y costeros como el de California.4. Garantía contra viento sin límite máximo de velocidad de vientoCuando se instala con la cantidad requerida de accesorios del sistema de techado GAF, la tecnología LayerLock® de las tejas Timberline HDZ® Reflector Series le permite a GAF ofrecer una garantía contra viento limitada WindProven™ de 15 años** sin límite máximo de velocidad de viento.Una opción elegante para los propietarios de CaliforniaSi vive en California, las tejas GAF Timberline HDZ® RS son una opción inteligente para cumplir los estrictos requisitos de reflectancia estatales y, al mismo tiempo, seguir el sentido estético y estilístico de la arquitectura moderna. Las características de las tejas le brindan protección adicional a su hogar y pueden reducir los costos de refrigeración, algo que puede suponer un ahorro para su bolsillo.¿Está listo para obtener estos beneficios en su techo? Comuníquese con el contratista de techado certificado por GAF*** más cercano para obtener más información.*La garantía limitada StainGuard Plus™ de 25 años contra decoloración provocada por algas verde-azuladas está disponible solo en productos vendidos en paquetes que incluyen el logotipo StainGuard Plus™. *La garantía limitada StainGuard Plus PRO™ de 30 años contra decoloración provocada por algas verde-azuladas está disponible solo en productos vendidos en paquetes que incluyen el logotipo StainGuard Plus PRO™. Consulte la Garantía limitada de tejas y accesorios GAF para conocer la cobertura y las restricciones completas.**La garantía limitada contra viento WindProven™ de 15 años en tejas Timberline® HDZ™ requiere el uso de fajas iniciales GAF, protección de cubierta de techo, cumbreras para tejas y barrera contra filtraciones o ventilación de áticos. Consulte la Garantía limitada del sistema de techado GAF para conocer la cobertura y las restricciones completas. Visite gaf.com/LRS para conocer los productos GAP elegibles.***Los contratistas inscritos en programas de certificación GAF no son empleados ni agentes de GAF, que no controla ni supervisa de ningún otro modo estas empresas independientes. Los contratistas pueden recibir beneficios, como puntos de recompensa de programas de lealtad y descuentos en herramientas de marketing de GAF, por participar en el programa y ofrecer garantías mejoradas de GAF, que requieren el uso de una cantidad mínima de productos de GAF. Sus arreglos con un contratista, y todos los servicios que le pueda ofrecer, están sujetos a los Términos de uso del contratista.

By Authors Dawn Killough

December 20, 2024

A contractor reviews roof warranty options with potential clients.
Your Home

Interested in a Roof Warranty? Here's What to Know

Installing a new roof that will protect your home and family for years to come is a major investment. That's why it's important to have adequate roof warranty protection once the job is complete.While most reputable roofing manufacturers provide basic warranty coverage against manufacturing defects in the roofing materials, it's often better to choose enhanced warranties that also cover installation. These warranties are available through your roofing contractor or manufacturer, and they're transferrable should you sell your house.Understanding what is—and isn't—covered can help you make an informed decision. Here's what you need to know when selecting your warranty.Comparing Types of Roof WarrantiesRoof warranties come in three main types, and understanding the differences can help you select the right one for your needs.Standard Manufacturer's Product WarrantiesMost roofing manufacturers provide basic coverage against factory defects, often at no additional cost. And if you install qualifying accessories in addition to shingles, some manufacturers offer better coverage.For example, if you purchase and install GAF Designer or Timberline® Shingles, the GAF Shingle & Accessory Limited Warranty automatically covers them. It also covers qualifying GAF accessories for up to 40 years. If you install at least three qualifying GAF accessories, you'll also receive the GAF Roofing System Limited Warranty, which provides a lifetime warranty on accessories and shingles.Most standard manufacturer warranties—also known as product warranties—only cover defective materials and components, not shingles that fail due to installation or maintenance mistakes.Contractor WarrantiesThe roofing contractor you hire to install your roof system plays a vital role in how well it performs and lasts. In addition to basic manufacturer warranties, many contractors offer a workmanship or contractor warranty, which covers you against future problems resulting from application errors (roof issues due to contractor installation mistakes).These warranties' details and terms vary by contractor. Some provide lifetime coverage against worker errors and damages inside your home stemming from faulty workmanship. However, contractor warranties don't protect your roof from weather damage, falling trees, or issues from roof modifications after installation. Ask your roofing contractor what their warranty does and doesn't cover.Enhanced or Extended Manufacturer's WarrantiesAn enhanced or extended manufacturer's warranty offers the most comprehensive protection, covering contractor workmanship plus expanded roofing material coverage. Ask your roofing contractor if they provide enhanced warranty options backed by the roofing manufacturer.Usually, enhanced warranties are available at an additional cost, and they often require you to install shingles and accessories from the same manufacturer. These components can include leak barriers, underlayment, hip and ridge cap shingles, and soffit and ridge vents. Typically, an authorized roofing contractor enrolled in the manufacturer's certified contractor program must install the products.Extended manufacturer's warranties usually last longer than standard ones. For example, the GAF Golden Pledge® Limited Warranty provides a 50-year non-prorated period against manufacturing defects (versus the 10 years the standard warranty offers). It also gives you up to 30 years of coverage against the roofing contractor's misapplication of the GAF products and covered flashings (installed at valleys, dormers, chimneys, and plumbing vents to provide added protection from water penetration). This holds true even if the roofing contractor is no longer in business. The Golden Pled ge® also provides coverage for tear-off and disposal to repair your roof in the event of a covered claim.GAF also offers the WindProven™ Limited Wind Warranty and the 25-Year StainGuard Plus™ Algae Protection Limited Warranty, which provide comprehensive coverage.Understanding Roof Warranty Exclusions and RequirementsEven with an extended roof warranty, not every situation that can damage your roof system is covered. For example, a heavy snowfall, hailstorm, lightning strikes, or severe wind can all result in damage that your warranty might not include.Ask your roofing contractor which situations are typically excluded from manufacturer warranties. Also, ask about coverage for proper roof ventilation.When considering roof warranties, it's crucial to understand their terms and conditions. Daniel McLaughlin, External Learning & Development Manager at GAF, cautions, "For homeowners, the initial risk of limited warranties is not understanding them and/or the verbiage that comes with them." He emphasizes the importance of knowing the difference between specific terms, such as "labor vs. workmanship" and "non-prorated vs. prorated," and understanding what kind of warranty homeowners can receive when the job is complete.To be eligible for an enhanced manufacturer's warranty, you'll likely need to hire a manufacturer-certified contractor. For example, to be eligible for the GAF Golden Pledge® warranty, you must hire a GAF Master Elite® Contractor to install your new roofing system.Registering and Maintaining Your Roof WarrantyCheck the roofing manufacturer's instructions on how to register your warranty. Even if a warranty is automatically included with your roof purchase, you or your contractor must activate it within a specific period once the roof system is installed, depending on which warranty you select.You should receive confirmation from the manufacturer that your roofing contractor registered your enhanced warranty. For example, if you purchased a GAF Golden Pledge® warranty, you'll receive a copy in the mail within 60 days after the job is complete. If not, contact GAF about your warranty status.Also, you can void your warranty if you don't properly maintain your roof. So, schedule regular roof inspections and cleanings—usually every two years—to address potential problems early. Use the contractor that installed your roof when you book maintenance service; most warranties don't allow you to outsource work or do it yourself.Finally, save your proof of purchase, including your contract with your roofing company and any receipts or invoices from your roofing supply store. These documents may be necessary if you need to file a warranty claim.Finalizing Your Warranty PlanBefore starting a new roofing project, do your research and speak to your roofing contractor about available warranties. Once you understand the different types of coverage standard, contractor, or enhanced warranties provide, it's easy to see how valuable they are. This GAF Limited Warranty Comparison Guide also outlines each roof warranty's requirements and coverage.Ready to move forward with a roof repair or replacement? Find a GAF-certified roofing contractor* near you to discuss your specific roofing needs and guide you through the process.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.

By Authors Wendy Helfenbaum

December 16, 2024

Contractor discussing roof damage with a customer
Residential Roofing

How Innovations in Hurricane Shingles Protect Your Roof from Storms

Each year, hurricanes cause billions of dollars in losses for homeowners across the country. In an effort to combat this, the roofing industry has made advances to help reduce the impact caused by storm damage, including specially designed shingles that can handle heavy impacts and high winds.If you live in a hurricane-prone area, here's what you need to know about hurricane shingles designed to handle the high wind speeds and debris impacts that can come with major hurricanes.Understanding Impact-Resistant ShinglesHurricane Shingles, (or impact-resistant shingles) are built to withstand both impacts and high wind speeds. They're robust, often created from a unique combination of styrene-butadiene-styrene (SBS) and asphalt, providing more strength than non-reinforced asphalt shingles.In hurricane-prone areas, sharp winds can easily blow debris and other large objects—like tree branches—onto a roof. Shingles that pass the UL 2218 Class 4 impact-resistant test are most effective at limiting impact damage. These shingles are tested by dropping a 2-inch steel ball from 20 feet above. The steel ball impacts various target locations of the shingles on the test deck. The test includes two impacts per target location. The shingles must handle the impact while showing no evidence of ruptures or cracks through the shingle.These shingles should also be able to withstand Category 3 hurricane wind speeds, ranging from 111 to 129 mph.Choosing the Right Shingles for Your RoofWhen deciding between hurricane shingles, consider their wind classification, impact resistance, and warranties.Wind ClassificationQuality, UL 2218 Class 4 impact-resistant shingles should be able to handle at least 110 mph wind speeds. These shingles tend to be made of either metal or asphalt mixed with SBS. For example, the GAF TimberSteel™ Premium Metal Roofing System is effective against high wind speeds due to layers of protection, innovatively designed to help protect your home against the elements.Impact ResistanceQuality hurricane roofing materials, including impact-resistant shingles come with enhanced protection against impacts from objects, especially hail. While these shingles may be more expensive than non-reinforced asphalt shingles, they tend to require less maintenance. And since these shingles can withstand certain kinds of impacts that often happen during a hurricane, it may not need as many repairs.WarrantiesConsider the shingles' warranties and what you're protected against. A wind warranty can guarantee roof repair and replacement for specific wind speeds as long as you meet all the warranty's requirements.GAF Hurricane Roofing InnovationsCertain GAF shingles like Timberline® AS II have the best possible wind and impact resistance ratings. They meet the highest rating, Class F, for the Standard Test Method for Wind Resistance of Steep Slope Roofing Products (ASTM D3161). This means they can withstand wind speeds up to 110 mph.Timberline® AS II shingles also have the highest rating, Class H, for the Classification for the Standard Test Method for Wind Resistance of Asphalt Shingles (ASTM D7158). This means the shingles can resist uplift from up to 150 mph wind speeds. If that wasn't enough, these shingles' Class 4 classification for the UL 2218 test means they can handle a 2-inch steel ball drop test from 20 feet above.With the highest possible ratings for all these tests, the Timberline® AS II shingles are proven and tested against the closest possible hurricane-like conditions (testing performed under controlled laboratory conditions). The robust SBS-modified asphalt material and LayerLock® technology help fortify your roof against wind, rain, and hail. These GAF shingles are also eligible for the WindProven™ Limited Wind Warranty**, which provides infinite wind speed protection when installed with the required combination of four qualifying GAF accessories.Shingle Installation and Roof Maintenance TipsProperly installing impact-resistant shingles is essential for them to perform their best, so choose an experienced roofer. They'll know how to nail the shingles correctly and make sure they're firmly attached to each other and the roof to prevent any openings for leaks or weaknesses. Also, ask your roofer if they know how to install hurricane clips to help prevent your roof from flying off during a storm.Once your roof is installed, perform regular maintenance every year before and after hurricane season. Replace any missing or broken shingles, and secure any loose shingles. Also, replace any rusted nails or flashing. As part of roof maintenance, confirm your gutters are working properly and clean out any leaves, allowing water to flow away from your home.A weak point on a roof can degrade even further in harsh hurricane weather, and ensuring your roof is in stable condition can help keep you and your home safe.FAQsWhat are the best shingles for high wind?The best shingles for high winds are classified as Class F for the ASTM D3161 and Class H for the ASTM D7158 test. These two classifications mean the shingles have the best ratings for handling hurricane winds.Do impact-resistant shingles last longer?Due to their durable construction, made with SBS-modified asphalt, which makes shingles more flexible and better able to withstand impact stress than standard architectural shingles, GAF impact-resistant shingles are built to last many years.Preparing for the Next StormAfter the hurricane season, check your roof for damage. View this GAF guide on roof storm damage to learn what to look for and what to expect for possible repairs. If your roof needs work before or after a storm, reach out to a certified contractor* in your local area for guidance and support.*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the GAF Contractor Terms of Use.**15-year WindProven™ limited wind warranty covers GAF Shingles with LayerLock® Technology only and requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products. For installations not eligible for the WindProven limited wind warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.

By Authors Mark Soto

December 06, 2024

Don't miss another GAF RoofViews post!

Subscribe now