Power Attic Ventilation Options for Residential Projects

As it gets colder, you might wonder: does moss on a roof die in winter like other pesky plants? It's a common myth. However, while you might hope winter weather will eliminate the moss, this isn't the case. Even if the moss looks dried out when temperatures drop, it goes dormant and absorbs water like a sponge. Before long, it will continue growing and become more difficult to get rid of as it spreads across your roof, even after the winter season.Why You Should Remove Moss from Your RoofIf you don't remove moss from your roof, it can wreak havoc on shingles, eating away at their protective coating. Moss roots also grow in between shingles and underneath the structure. This can degrade the shingles and push them apart as temperatures drop, allowing water to penetrate and leak into your home.Moss growth can also prevent proper water drainage and result in bacteria or mold growth, rotten underlayment, and damaged framing. It compromises the roof's ultraviolet protection, too. Left to grow into a thick layer, moss can reduce your roof's lifespan.The Difference between Moss and AlgaeIt's also important to know the difference between moss and algae, and how to prevent or remove both to extend the life of your roof. Moss is a herbaceous plant that absorbs nutrients and water through its leaves, producing spores to reproduce. It spreads across your roof as it grows. Algae are flat, slimy, green aquatic plants that lack leaves, stems, or flowers. They tend to grow on moist areas of your roof, causing dark stains. Algae are usually found in areas where water drips overhead. If you suspect algae on your roof, consider installing algae-resistant shingles.How to Remove Moss from Your RoofSince the answer to 'does moss on a roof die in winter?', is no, now's a good time to hire a professional roofer to get rid of it. Moss is resilient, and you can't simply remove it by hand. They'll remove the moss using a chemical solution, and they can replace any damaged shingles to restore your roof's integrity.It's best to rely on a professional who can eliminate the moss while also inspecting your roof for damage. Don't try to use a pressure washer or any weed killers not designed for moss, as these can stain or damage your roof.How to Prevent Moss GrowthSince moss thrives in damp, shady spots, trimming trees to allow more sunlight onto your roof can help deter its growth. Also, regularly clear away leaves, twigs, and other debris, which helps moss grow, and clean your gutters frequently to prevent water buildup. In addition to these tasks, scheduling regular roof inspections can help you catch any issues early.You can also install a zinc strip, such as GAF Master Flow® Zinc Moss & Mildew Preventer, near the roof ridge to help protect your roof against moss, algae, and mildew growth. The metal strip oxidizes over time, and as water washes over the roof plane, it creates an undesirable environment for moss.By proactively removing moss and preventing its return, you'll protect your biggest investment: your home. Contact a GAF-certified roofing contractor* to ensure it's removed effectively.*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.

If every day was sunny, mild, and a pleasant 75 degrees, there'd be little reason to wonder about the best time to replace a roof. Of course, not everyone lives in areas with ideal weather conditions, as climates vary greatly across the country.So if a client ever asks, "When is the best time to replace a roof?" your answer will likely vary based on where they live and what each season is like. However, you can share some general pointers in response. Here's what to consider for each season to help answer the question, "when is the best time to replace a roof?"SpringSpringtime is traditionally recognized as the kickoff of roofing season, as outside temperatures begin to warm and activity increases. Thanks to melting ice and snow, it's also the time of year that homeowners may want to have their roofs checked out for damage.While spring offers outdoor temperatures that are more friendly for workers, the season also typically comes with an increased chance of severe thunderstorms (and potentially tornados, depending on the region). Spring is usually a good time to schedule a roof replacement if you just monitor the weather forecast for major events to help reduce the chance of delays.SummerWith spring showers in the rearview, most areas of the country see longer stretches of nice weather during summertime, which lends itself well to working outside. Accordingly, summer tends to be the most ideal time for installing a new roof.But with potentially hot days, when is the best time to replace a roof in the summer? Workers will need to start as early in the day as possible because temperatures are usually cooler in the morning. Depending on the forecast temperatures, the job may need to be spread over a few days, so most of the work can be done in the morning hours before it gets too hot. It's also wise to remind customers that workers will need to have breaks in the shade and access to water to stay hydrated.FallThe autumn months can be an equally good time for a roof replacement as summer, as the hot and hazy days have passed, and severe weather isn't as common. The only exception to this is if you're working in an area prone to hurricanes. Hurricane season runs through the end of November and can cause project delays.In addition to the favorable weather, fall is a popular season for roof replacement because many property owners want to fortify their homes and buildings with a new roof before the winter months.WinterIn some areas of the country, it may be possible to continue roofing installations year-round, including during the winter. In southern regions, for example, roofing replacements can often be completed in the winter, as there's less chance of inclement weather. Temperatures may drop, but not as drastically as in areas that see ice and snow more regularly. Of course, it's still important to reference the relevant local forecast when scheduling upcoming work.Sustained stretches of very cold weather does not constitute suitable weather for the installation of asphalt shingles. All self-sealing shingles must be exposed to warm, sunny conditions for several days before they completely seal. Before sealing occurs, shingles are vulnerable to blow-offs and wind damage. Shingles installed in fall or winter may not seal until the following spring. Shingles that are not exposed to direct sunlight, adequate surface temperatures, or that are not fastened or installed properly may never seal. Failures to seal, blow-offs, and wind damage under these circumstances result from the nature of self-sealing shingles, and are not covered under most manufacturer's warranties. Be sure to follow the manufacturer's instructions for proper installation. While most provide guidance about cold weather installations, it will ultimately be up to you to exercise discretion about when to move forward with an installation vs. postponing the work until more favorable weather conditions are present.Other Factors That May Affect Project TimingWhile weather is likely the leading factor that can disrupt scheduled roofing work, if you want to best answer your client's question of "when is the best time to replace a roof?" you'll need to take other factors into account when setting timeline expectations for property owners. One such consideration is the lead time needed for materials. If your customer chooses an uncommon color or a specialty product, it may take longer for materials to arrive.Another factor to weigh is your own backlog. If your production calendar is booked weeks out, clearly communicate the timing to your customers with the knowledge that weather events could impact the schedule. Regularly communicating with customers and setting accurate expectations are key to a positive experience.Looking to learn more roofing best practices and further expand your knowledge base? Check out GAF's CARE Contractor Training Center to help build your skill set and receive valuable training.

What's old is new again. In addition to musical tastes and clothing trends, this is often the case with certain architectural styles.Today, the modern mansard roof is experiencing a comeback. The first known use of this roof style was in 1550 where it appeared on a portion of the Louvre Museum in Paris, France. The mansard roof derives its name from François Mansart, a French architect who favored the style and used it in many of his building designs.Its unique style and aesthetic appeal led to its growth in popularity and spread into other countries, including England and Italy. Eventually, the style made its way to the US and Canada; it can be found on many historical buildings and throughout older cities.What Is a Mansard Roof?A mansard roof has four sides with two slopes, and the lower slope typically has a steeper pitch. Often, dormer windows are tied into the mansard roof, giving the building a distinctive appearance. The style can be either straight, convex, or concave, offering several options to complement the home's architectural design.One of the reasons for the mansard roof's popularity is that it can transform typically unusable attic areas into functioning, livable spaces. This is because the design offers more headroom and the dormer windows bring in natural light.The 1970s and 1980s saw a resurgence in mansard-style roofs in new construction, with the style appearing on apartment buildings and condos as a way to maximize space and capitalize on natural lighting. However, as these structures now need their roofs replaced, many owners are looking to modernize and enhance their properties' curb appeal.What Is a Modern Mansard Roof?The modern mansard roof is a new take on an old favorite. It may feature additional windows and use more contemporary roofing materials.Gentrification of historic city areas has seen homeowners purchasing and renovating older homes—many of which feature mansard roofs. Some single-family homeowners who want to expand their living spaces have been adding mansard-style roofs to attics, which can help open the space without having to add another story.While putting a new spin on this traditional roof style, many people have become interested in applying modern roofing solutions. A modern mansard roof may feature more architecturally appealing roofing materials, like GAF Timberline HDZ® shingles, which deliver both beauty and protection. Modernizing a mansard roof on an existing property may also include adding windows to the surface to help light up the interior space.Design Appeal Can Be Found Inside, TooIn addition to apartment buildings and single-family homes, modern mansard roofs are increasingly appearing on tiny homes. These roofs can maximize the living space on the second floor, which is often used as a sleeping area in many of today's smaller homes.Some people are also choosing mansard-style roofs in new construction because of the unique appeal they can add to a home's design. The loft area under the mansard roof can be designed with high windows, exposed beams, and natural wood accents to create a cozy additional space. This can be used for an office, a playroom, or a relaxing reading nook.As with any roof style, mansard roofs have pros and cons, so talk to a professional roofing contractor who can help you determine if a mansard style is right for your home. They can also help you identify the right roofing materials if you're looking to modernize an existing mansard roof.