Can You Put New Shingles over Old Shingles?

As a roofing contractor, keeping yourself and your employees safe is crucial, which involves using the right equipment. Ladder hooks, sometimes referred to as roof hooks, are used to secure a ladder over the top of a roof's ridgeline. They're an essential piece of safety equipment for steep-slope roofing work.How Do Ladder Hooks Work?These hooks resemble a shepherd's crook that hooks over the roof's ridgeline and stays put with an attached T-bar to secure it to the other side of the ridge. The bottom of the crook has a smaller hook that holds the ladder and prevents it from slipping or sliding down the roof. Ladder hooks are typically made from heavy-duty steel and can support several hundred pounds. They essentially turn the ladder into a more stable set of stairs, creating a safer and more efficient work environment for roofing professionals, especially during steep-slope work.Most hooks also feature a rubber wheel that can help you get the ladder safely up onto the roof. Once you secure the hook on the rungs of the ladder, roll the ladder up the slope (on its back). When it passes the roof ridgeline, flip the ladder over to secure the hooks over the top of the ridgeline.Why Should You Use a Ladder Hook?According to the American Ladder Institute, 500,000 people are treated for injuries from using ladders every year, with 300 of those injuries leading to fatalities. With newer home styles featuring more dramatic rooflines with steep pitches, you may find yourself facing 10:12, 12:12, and higher pitches more regularly. Ladder hooks can help make working on these roofs safer.They can provide stability and security on lower-pitched roofs, too. You may also want to use them for performing repairs around skylights or chimneys, especially if the roof surface is icy or slippery. And they can provide secure footing in cases of suspected damage, such as a weak or rotting deck.These safety devices are designed to prevent the ladder from damaging shingles, so there's no downside to using them.Can a Ladder Hook Replace Other Safety Measures?Using a ladder hook can make you feel more secure and stable on a steep pitch. But you shouldn't forego other safety measures, such as using a personal fall arrest system consisting of lifelines, lanyards, and deceleration devices attached to an anchor point and connected to the body harness. Remember, the anchorage should be able to support 5,000 pounds per employee. Ladder hooks are designed to secure the ladder to the rooftop—not to secure a person or prevent them from falling.How Do You Choose the Right Ladder Hook?To find the right ladder hook, contact your ladder's manufacturer to see if it has a hook designed to work with its ladders. If it doesn't offer any, review the ladder hook manufacturer's guidelines to see what types of ladders are best suited for its hook. If your ladders are due for replacement, you can also look for manufacturers that offer kits with both the ladder and the hook.For more learning opportunities and resources to help you succeed in your roofing business, visit the GAF Center for the Advancement of Roofing Excellence (CARE).

When communities come together, incredible things happen. That's exactly the case in the city of Seattle, Washington, where the GAF Community Contractor Program has made lasting impacts on those in need through partnerships with Habitat for Humanity and ReBuilding Together. Both nonprofit organizations focus on working with homeowners to build new homes and revitalize communities in need of rebuilding, respectively.GAF's partnership with Habitat for Humanity began in 2011. From the start, it felt like a natural pairing. Habitat for Humanity's vision of "building strength, stability and self-reliance in partnership with families in need of decent and affordable housing" aligns perfectly with GAF's commitment to building resiliency in communities across the U.S.GAF recently became involved in ReBuilding Together in the Pacific Northwest through GAF Territory Manager Donovan Gladstone, whose involvement with the board of Roofing Contractors Association of Washington created an opportunity for community partnership. ReBuilding Together's mission of "repairing homes, revitalizing communities, rebuilding lives" is an excellent fit with GAF's commitment to helping neighbors.Helping Contractors Support their CommunitiesGAF invests in the areas where it has manufacturing operations, aiming to lift up the communities where team members live and work. This ideal extends to the GAF Community Contractor Program, where GAF certified contractors can partner with GAF and give back through the following initiatives:GAF Habitat for Humanity Program. With over 1,500 local Habitat for Humanity affiliates in the U.S., GAF-certified contractors can partner with their local chapter to provide the labor to install fully-donated GAF roofing systems. Volunteers don't work alone. Homeowners invest hundreds of hours of their own labor into building their Habitat house.GAF Affordable Housing Reroof Program. This initiative encourages contractors to partner with any 501c3 nonprofit organization in their community for a reroof project, for which GAF will donate the shingles.GAF Roofs for Heroes. GAF-certified contractors can partner with a local 501c3 to perform roof repairs or replacements for local heroes. These heroes include healthcare workers, first responders, veterans, police, fire, and EMTs.As part of the Community Contractor Program's progress in Washington state, more than 20 GAF certified contractors were able to provide over 100 new roofs to those in need of a new roof in the Seattle region, working with Habitat for Humanity and ReBuilding Together. "Giving back is at the core of what GAF does, but bringing in and partnering with our contractors is something that makes us unique," explains GAF Director of Corporate Social Responsibility Arlene Marks.Celebrating Giving Back While Giving Back AgainMarks and Gladstone wanted to host an event to thank the contractors who donated their time and labor to install those roofs and came up with a unique and fun way to extend the spirit of giving through Welcome Home Toolkits. "This was Arlene's idea, and it was such a great one," Gladstone notes.Marks shares, "We try to make all of our events meaningful, so what was the best way that we could reach back out to these homeowners that we've already helped? The Welcome Home Kits were the answer."The contractors attending the event assembled toolkits containing basic items like screwdrivers, nut drivers, adjustable wrenches, pliers, hammers, safety glasses, and more. The kits also include a video message of encouragement from the program participants.Most of the individuals who are helped through the roof donations are first-time homeowners. Accordingly, many don't have the basic tools needed to maintain their homes. The gift of a Welcome Home Toolkit provides so much more than drivers and wrenches, it offers confidence, resilience, and peace of mind.Building Community Among ContractorsIncredible things happen when communities come together—not only for the recipients of the donations, but for the participants as well. GAF-certified contractors in the Seattle region came together to give back to the community while building new professional relationships and friendships at the same time."You're bringing together like-minded people," Marks notes. "While they are competitors in the field, they already have the compassion to help their communities. It was an opportunity to work together toward a common goal to meet, share ideas, and talk about the market in a very safe and non-competitive environment."Impacting the CommunityA representative from Habitat for Humanity attended the appreciation event in Seattle to say thank you and share how much of an impact ReBuilding Together and the contractors' work have had on the community. The Welcome Home Toolkits were provided to both organizations and have gone a long way toward welcoming and inspiring the new homeowners.Looking to get involved in giving back to your community? Visit the GAF Community Matters page to explore different opportunities and get started.

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.