Blisters typically appear within the first year after shingles are installed. Even though blistering is often perceived as a manufacturing defect, it's usually ...Feb 22, 2024 · Shingle Removal. If you are replacing the roof, your contractor will have to remove the old shingles first. Roof removal usually costs between $1 and $5 per square foot, with the average homeowner spending $1,000 to $1,500. Some contractors charge hourly. If that is the case, expect to spend $50 to $80 per hour. Cost to install asphalt shingles. The cost to install an asphalt shingle roof is $5,700 to $12,000 for an average 1,800 to 2,500 SF roof. In comparison, roof replacement costs as little as $3,200 for rolled roofing or as much as $70,000+ for premium materials like natural slate or copper. Asphalt roof cost per square foot. An asphalt shingle roof …Asphalt Shingle Roof Installation Costs and Cost Factors. Expect asphalt shingle roof installation estimates in these ranges: $50-$150 per square for tearing off and disposing of old roofing. $200-$300 per square for installation of new shingles and accessories.Material. The type of material you choose for your shingles can impact the price as well as the durability of your roof. Material options can include asphalt, composite, metal, solar, slate and ...A full roof replacement costs about $11,500 for an average-sized home with costs reaching up to $80,000 for copper roofs, according to Forbes Advisor’s analysis of materials and costs. How much ...Feb 19, 2024 · shingle bundles = roof area in squares × 3. That is because the average bundle of shingles covers about 33.3 ft², and a square is simply an area unit covering 100 ft², so if you'd like to calculate a roof's area in squares, you'd simply divide the roof area in feet by 100 and, most likely, round it up. roof area in squares = roof area in ... 15. Standing Seam Shingles. Photo: istockphoto.com. Standing seam roofing usually comes in large panels that are 12 or 16 feet long, but standing seam shingles are different. While they’re made ...That said, on average, most contractors will charge between $4.50 and $7.50 per square foot or $450 to $750 per square (100 sq.ft.) to install or replace an asphalt shingle roof on a typical house. On average across the US, it will cost between $9,000 and $16,500 to replace a 2,000-2,200 sq. ft. roof on a single-family house up to two-stories high.3 days ago · Remove the Nails. After loosening the shingle, locate the nails and remove them. Usually, a shingle will be held in place by three to four nails, and shingles in the first row of roofing can be ... Roof shingles can last 15 to 30 years with good maintenance. Unfortunately, unforeseen factors, like storms, strong winds, and falling trees, sometimes lift away or damage a few shingles. If that happens, consider replacing the missing shingles instead of the entire roof.Jul 26, 2023 ... This is because they provide a more dimensional look to the roof. Each shingle appears more dimensional because it is; multiple layers of ... Roof shingle. A shingle roof in Zakopane, Poland. With an area of 6000 m2 (1½ acres), it was one of the largest wooden shingle roofs in Europe. Roof shingles are a roof covering consisting of individual overlapping elements. These elements are typically flat, rectangular shapes laid in courses from the bottom edge of the roof up, with each ... For a low-slope roof such as 4:12 to 2:12, three-tap shingles are preferable. Low-slope roofs are more susceptible to ice and water problems such as ice dams, so better flow properties are important to consider for installation. For an average-slope roof (more than 6:12) or high-slope roof (8:12 to 12:12), architectural shingles …Feb 19, 2024 · shingle bundles = roof area in squares × 3. That is because the average bundle of shingles covers about 33.3 ft², and a square is simply an area unit covering 100 ft², so if you'd like to calculate a roof's area in squares, you'd simply divide the roof area in feet by 100 and, most likely, round it up. roof area in squares = roof area in ... Efficient Design. Cool Roofs. A cool roof is designed to reflect more sunlight than a conventional roof, absorbing less solar energy. This lowers the temperature of the building just as wearing light-colored clothing keeps you cool on a sunny day. Conventional roofs can reach temperatures of 150°F or more on a sunny summer …When you buy Owens Corning roofing shingles, you can rest assured that our commitment to quality is of the highest importance. Read More. Owens Corning …Things You Should Know · Slide a garden fork or roofing shovel under the shingles to lift them off the roof. Remove any loose nails and staple your underlayment ...May 15, 2022 · Shingles are supposed to withstand strong winds. However, if they weren’t installed correctly, or if they’re old and worn, the wind can cause them to “lift”. When a shingle is lifted, its edges will be a bit upturned and the space beneath the shingle will be noticeable. The easiest way to tell your roof has lifted shingles is if the ... 3. Cracked Roof Shingles Repair. 3. Carefully lift the upper shingle and secure the new shingle with roofing nails. If a shingle is simply cracked or torn, you don’t have to …Fiberglass Shingles vs. Asphalt Shingles. Fiberglass is a very popular roofing shingle type. They are a type of asphalt shingle, often compared to an organic mat asphalt shingle. Fiberglass shingles are different because they have a fiberglass mat while organic asphalt shingles use paper as the base.Sagging Roof. A sagging roof is one of the most telltale signs that you need a new installation. Sagging happens when there is a structural issue below the shingles, such as severe water damage or ...They cost more up-front but last for decades and provide great long-term value. A 2,000-square-foot asphalt shingle roof typically costs $5,994–$9,791. A 1,700-square-foot metal roof typically costs $9,150–$16,743. Learn what goes into these costs and compare the pros and cons of metal versus shingle roofs below.Onduline Bardoline Green Roof Shingle Detail Strip - 0.3 x 7.5m. (17) £26.50. £11.78 per m 2. If you want to build a traditional roof, look no further than our range of shingles. Roof shingles are popular thanks to their sleek appearance and high performance. Shop our range today to complete your roof structures.What’s more, you can find savings among similarly rated multilayered architectural laminated shingles. For instance, Iko Crowne Slate costs $180 per square (100 square feet), a standard roofing ...Aug 19, 2022 ... That means your asphalt shingles can reach temperatures of 160 degrees Fahrenheit on a 100-degree Fahrenheit day. The roofing shingles may ...Roof shingles can last 15 to 30 years with good maintenance. Unfortunately, unforeseen factors, like storms, strong winds, and falling trees, sometimes lift away or damage a few shingles. If that happens, consider replacing the missing shingles instead of the entire roof.If your roof is under 10-years-old then the leak is most likely the result of poor workmanship. If your roof is over 15-years-old then your roof needs to be replaced rather than going the route of spot-repairs or a layover. A second layer of shingles will actually make it harder to identify when you should do a full roof replacement.Install a piece around the corner from the first piece, making sure it's butted against the other shingle. Use a utility knife to roughly cut the excess from the first piece. Slice once or twice, …6. Install the first row of shingles. The first row of shingles — sometimes called the starter strip — should overhang the drip edge by about a half-inch. Make sure to measure the height of your shingles …Aug 19, 2022 ... That means your asphalt shingles can reach temperatures of 160 degrees Fahrenheit on a 100-degree Fahrenheit day. The roofing shingles may ...The average cost of asphalt shingles runs between $3.50 to $5.50 per square foot for installation and about $0.80 per square foot for basic materials. One square (bundle) of asphalt roof shingles covers 100 square feet and ranges in price from $80 to $550 per square (including installation). All prices depend on the …Jun 1, 2023 · 15. Standing Seam Shingles. Photo: istockphoto.com. Standing seam roofing usually comes in large panels that are 12 or 16 feet long, but standing seam shingles are different. While they’re made ... Slope and Exposure Tables & Nailing Details for Wood Shake & Shingle Roofs. Recommended exposures for shakes and shingles on roofs are shown in Tables 2-13 and 2-14. Minimum slopes. The minimum recommended slope for standard installation of shingles is 3:12, and 4:12 for shakes. Low slopes.Buy the adjustable type designed to hold a 2×10 board. Space the jacks no more than 4 ft. apart. Nail roof jacks to the rafters with at least three 16d nails through the roof sheathing and then nail on a 2×10 to prevent you—and the shingles—from sliding off the roof. Step 2. Steps for reshingling a roof. Pry off old roof shingles with pitch fork. Nail down loose roof sheathing to rafters. Cover roof deck with 30-pound felt underlayment; staple felt every 6 to 8 inches. Nail drip-edge flashing to lower edge of roof. Snap vertical chalk line down center of roof. GAF Advanced Protection Shingles. Our most popular Timberline ® Shingles feature proprietary GAF Dura Grip™ adhesive that seals each shingle tightly and reduces the risk of shingle blow-off, with a warranty to withstand winds up to 130 mph. Timberline ® Shingles have also earned the highest roof fire rating — UL Class A, Listed to ANSI/UL ... May 8, 2013 · Mastering the Roof is a comprehensive video series that provides instruction on the installation of GAF residential shingles and roofing systems. Learn more ... A starter shingle is normally a necessary component for all roofing warranties. Expenses like these can easily cost you $300 to $500 for a single replacement. Worse, if your roofer finds water leaks and improperly installed shingles, you might have to tear off your shingles and install new ones.Covering a roof with three-tab shingles requires three bundles for every 100 square feet of roof to be covered. Retailers sell shingles by the bundle and by the square, a unit equa...25-year StainGuard Plus™ Limited Warranty. Protect your roof investment with algae resistance so powerful it allows us to offer a 25-year limited warranty against blue-green …Traditional 3-tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches. These shingles are appropriate for pitches as low as …GAF- Mastering The Roof (chapter 08)Proper fastening is critical to the perfvormance of any roof system. This chapter will demonstrate how to properly nail ...If your roof shingles are falling off, bent, or otherwise seriously damaged, you should figure out the cause and fix it as soon as possible. Why Do Roof Shingles Fall Off? The most common causes of shingles falling off include high winds, owners walking on their roofs, a poor shingle installation job, shingles getting too told, and hail. 1 ... Standard roof shingle colors include uniform black, natural brown and sleek gray, but other shingle colors include shades of red, green, blue and more. Metal panels, sometimes called metal roof shingles, can last 40 to 70 years before needing replacement. They can have the look of modern sheets or have a more classic look. This evidence is exhibited as creases, folds, tears, missing shingles or portions of shingles, or any combination thereof. Further, this evidence is visible when the roof is examined carefully. A shingle that is simply not adhered and is not creased, folded, torn, or missing, is not evidence of wind-caused damage.Aug 26, 2020 ... One of the most common asphalt shingle issues that contractors are called out to fix is blistering. This happens when moisture trapped within ...Measure the length of a shingle as it lies across the roof. This will help determine how the shingles will lay on the roof width. Most asphalt shingles are 3 feet (91.4 centimeters) in length. If your roof's width is not an even multiple of the shingle's length, you will have a partial piece on one end of each row.Do this by pulling the nail up and out slowly and carefully. 3. Discard Old Shingles. After carefully removing the nails, pull the damaged row of shingles out to …Perform maintenance on your roof. Before you begin, it’s important to repair loose shingles and flashings to minimize roof damage. Afterward, clean out your gutters and downspouts. You’ll need the cleaning solution to drain off the roof during rinsing. 3. Protect your yard. Move any furniture away from the work area.Shingle Removal. If you are replacing the roof, your contractor will have to remove the old shingles first. Roof removal usually costs between $1 and $5 per square foot, with the average homeowner spending $1,000 to $1,500. Some contractors charge hourly. If that is the case, expect to spend $50 to $80 per hour.Aug 17, 2023 · The average cost for a 3 tab asphalt shingle roof replacement costs anywhere from $4,286 to $6,429 on a single story 1,800 sq. ft home. Total replacement costs can vary depending on the slope, pitch, and size of your roof. Asphalt roofing materials alone will cost you around $0.85¢ to $1.50 per sq. foot or $85 to $150 per square of asphalt ... Feb 17, 2024 · 7. Loosen and remove the damaged shingles. Loosen the adhesive underneath the tabs of the damaged shingle, then pull them free and discard. If the shingles are severely damaged, don't try to salvage them. Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof. A single panel of three shingles are nailed down at once for the simplest look of a slate roof configuration. Architectural asphalt shingles are built up and shaped to replicate the look of many different roof shingles like octagon scales or hand staved shakes. As a result, these dimensional shingles are often heavier and thicker. Metal Roofing If your roof shingles are falling off, bent, or otherwise seriously damaged, you should figure out the cause and fix it as soon as possible. Why Do Roof Shingles Fall Off? The most common causes of shingles falling off include high winds, owners walking on their roofs, a poor shingle installation job, shingles getting too told, and hail. 1 ...Replacement. If the damage to your roof is severe, you may need to replace it rather than repair it. Roof replacements cost anywhere from $6,700 to $80,000 depending on factors like the roof’s ...If your roof is under 10-years-old then the leak is most likely the result of poor workmanship. If your roof is over 15-years-old then your roof needs to be replaced rather than going the route of spot-repairs or a layover. A second layer of shingles will actually make it harder to identify when you should do a full roof replacement.Learn how to install shingles on a low roof from start to finish with a step-by-step guide and tips from This Old House experts. Find out how to secure shingles to …In this video, I show how to install roof shingles. This shingle installation is using asphalt architectural or dimensional shingles. This beginners installa...Dec 2, 2020 · Option 1: Upload an exterior photo of your home. Select “UPLOAD A PHOTO”. Take a photo or select a photo from your device (mobile, tablet, computer) and then follow the prompts. Note: You can also have your uploaded professional photo prepared with the Pro Upload service for a small additional fee. Select “UPLOAD A PHOTO” to use your ... A full roof replacement costs about $11,500 for an average-sized home with costs reaching up to $80,000 for copper roofs, according to Forbes Advisor’s analysis of materials and costs. How much ...Three-tab shingles are the most common. These single-layer shingles are typically rated to withstand winds up to 60 mph and moderate impacts from flying debris or hail. Architectural/laminated ...Feb 22, 2024 · Shingle Removal. If you are replacing the roof, your contractor will have to remove the old shingles first. Roof removal usually costs between $1 and $5 per square foot, with the average homeowner spending $1,000 to $1,500. Some contractors charge hourly. If that is the case, expect to spend $50 to $80 per hour. Shingle, thin piece of building material, usually with a butt end thicker than the other. Shingles are widely used as roof covering on residential buildings ...What’s more, you can find savings among similarly rated multilayered architectural laminated shingles. For instance, Iko Crowne Slate costs $180 per square (100 square feet), a standard roofing ...The average lifespan for shingles, which is normally around 20 years, is determined to be about 14 years for warmer environment, such as the Southwest; whereas, ...When it comes to choosing the right roof shingles for your home, there are several factors to consider. One of the most important aspects is the durability and longevity of the shi...Royal Sovereign Weathered Gray Algae Resistant 3-Tab Roofing Shingles (33.33 sq. ft. per. Bundle) (26-pieces) Add to Cart. Compare $ 49. 97 /bundle (83 ...7. Loosen and remove the damaged shingles. Loosen the adhesive underneath the tabs of the damaged shingle, then pull them free and discard. If the shingles are severely damaged, don't try to salvage them. Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof.3-tab asphalt shingles are the less durable choice, though this roofing material also costs less than architectural asphalt shingles. This type of asphalt shingle lasts about 20 years before needing to be replaced. This material is lightweight, easy to work with, and resistant to rain, sleet, and snow, though high …Dec 2, 2020 · Option 1: Upload an exterior photo of your home. Select “UPLOAD A PHOTO”. Take a photo or select a photo from your device (mobile, tablet, computer) and then follow the prompts. Note: You can also have your uploaded professional photo prepared with the Pro Upload service for a small additional fee. Select “UPLOAD A PHOTO” to use your ... Aug 4, 2021 · Roofing shingles are designed to withstand extreme weather – and they do so impressively. The average shingle roofing easily lasts more than ten years, even with poor maintenance. Unfortunately, daily exposure to rain, sunshine, hail and snow can take a toll on even the toughest shingle roofing. Install Starter Strip. Dave Toht. Use a starter strip or cut pieces for a starter course. Rip-cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing. Attach with nails along the top edge of the strip. Editor's tip: If …An alternative to a tear-off roof replacement, roof overlay (sometimes called “roof recovery”) is the process of applying new shingles and waterproofing to an existing roof. Rather than removing the old shingles and ripping out the old flashing and sealing, roofers simply cover them with a new layer. Compared to full roof replacement costs ...You need to gently pry up the overlapping cap shingle next to the cap you want to replace. Back about 1 inch you’ll see a roofing nail. Slide the pry bar under the nail head and gently pry the ...Shingles are heavy and more than two layers affect the carrying capacity of roof trusses and supporting members. Metal roofing is substantially lighter than asphalt shingles, but … Stop Roof Algae from Coming Back. To keep the algae from coming back, insert 6-inch-wide strips of zinc or copper under the row of shingling closest to the roof peak, leaving an inch or two of the lower edge exposed to the weather. That way whenever it rains, some of the metal molecules will wash down the roof and kill any algae trying to ... Roof shingle. A shingle roof in Zakopane, Poland. With an area of 6000 m2 (1½ acres), it was one of the largest wooden shingle roofs in Europe. Roof shingles are a roof covering consisting of individual overlapping elements. These elements are typically flat, rectangular shapes laid in courses from the bottom edge of the roof up, with each ... A comprehensive look at Wood shingle Roofs. In many parts of the world, wood shingle roofing is a premium roofing system used to provide homes with the perfect rustic look. Wood shingles are roofing materials that are obtained by sawing blocks of wood. They were a common feature in the early 20th century, and they are still widely used even ...The StormMaster Slate Shingle is designed with an interlocking design, which adds strength and ensures that the shingles stay in place, even in heavy wind conditions. The Atlas StormMaster Slate Shingles are a popular roofing solution that has garnered significant attention from homeowners and contractors alike.Shingle is a corruption of German Schindel meaning a roofing slate. Shingles historically were called tiles, and shingle was a term applied to wood shingles, as is still mostly the case outside the US. Shingles are laid in courses, usually with each shingle offset from its neighbors. The first course is the starter course and the last being a ridge course or ridge slates for a slate roof. 2. Understand the physics of how a sloped shingle roof works. Asphalt roofing shingles simply rely on the force of gravity to shed water from rain or snow melt. If the roof shingles and all accessory roof components are arranged and overlapped with this in mind, the roof should successfully shed water. In the dictionary, “to shingle” is ... The slope of your roof impacts the number of shingle bundles you’ll need. Houses with steeper roofs have more roof area to cover, so make sure you measure the roof properly to know the actual square footage. A roof slope, or pitch, is measured by the rise of the roof in feet over the run of the roof in feet. Most homes’ pitches fall ... Roof shingle. A shingle roof in Zakopane, Poland. With an area of 6000 m2 (1½ acres), it was one of the largest wooden shingle roofs in Europe. Roof shingles are a roof covering consisting of individual overlapping elements. These elements are typically flat, rectangular shapes laid in courses from the bottom edge of the roof up, with each ... Shingle, thin piece of building material, usually with a butt end thicker than the other. Shingles are widely used as roof covering on residential buildings ...Regular (3-tab) asphalt shingles have three regularly spaced asphalt tabs, giving the roofing material a very repetitive pattern. In contrast, dimensional ...A full roof replacement costs about $11,500 for an average-sized home with costs reaching up to $80,000 for copper roofs, according to Forbes Advisor’s analysis of materials and costs. How much ...To keep the algae from coming back, insert 6-inch-wide strips of zinc or copper under the row of shingling closest to the roof peak, leaving an inch or two of the lower edge exposed to the weather. That way whenever it rains, some of the metal molecules will wash down the roof and kill any algae trying to regain a foothold on your shingles.Roof Maxx is a 100% safe, soy-based roof treatment that extends the life of your shingles by up to five years. It works by penetrating the shingles and restoring them to their original flexibility. This gives them the ability to withstand the elements better and prevents them from cracking, curling, and developing granules.Feb 17, 2024 · 7. Loosen and remove the damaged shingles. Loosen the adhesive underneath the tabs of the damaged shingle, then pull them free and discard. If the shingles are severely damaged, don't try to salvage them. Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof. It can be used on masonry surfaces in addition to roof shingles as well. Black Jack 6190 Liquid Asphalt Coating is a liquid-applied coating for asphalt roofs. Designed to seal worn-out roof surfaces, the coating of Black Jack 6190 is waterproof and protects the underground wood and metal surfaces.
Steps for reshingling a roof. Pry off old roof shingles with pitch fork. Nail down loose roof sheathing to rafters. Cover roof deck with 30-pound felt underlayment; staple felt every 6 to 8 inches. Nail drip-edge flashing to lower edge of roof. Snap vertical chalk line down center of roof.. Infiniti qx50 review
Roof shingles lift due to a variety of factors such as bad weather or high winds, improper installation or installation of damaged shingles, foot traffic, and new roof installations. They generally have similar causes to curling and buckling shingles. There are several things you can do to fix lifting shingles.7. Loosen and remove the damaged shingles. Loosen the adhesive underneath the tabs of the damaged shingle, then pull them free and discard. If the shingles are severely damaged, don't try to salvage them. Just remove them and replace them with new shingles of a similar style to the rest of the shingles on the roof.A ridge cap shingle is a small shingle, usually about ⅓ to ½ the size of a regular shingle, that connects two sides of a roof together. A simple example would be the roof on a standard ranch-style home. Ranch styles homes usually have a two-sided gable roof, meaning they will have two equal sides that meet at the top.Royal Sovereign Weathered Gray Algae Resistant 3-Tab Roofing Shingles (33.33 sq. ft. per. Bundle) (26-pieces) Add to Cart. Compare $ 49. 97 /bundle (83 ...Installation issues: if shingles are not installed properly, granules can come loose. Blistering: if your shingles blister, granules can come off when the blister rises or bursts. Moss growth: if you have moss growing on your roof, it can cause granules to come off as the moss lifts the granules up, or after a freeze in …Shingles are supposed to withstand strong winds. However, if they weren’t installed correctly, or if they’re old and worn, the wind can cause them to “lift”. When a shingle is lifted, its edges will be a bit upturned and the space beneath the shingle will be noticeable. The easiest way to tell your roof has lifted shingles is if the ... Roof shingle. A shingle roof in Zakopane, Poland. With an area of 6000 m2 (1½ acres), it was one of the largest wooden shingle roofs in Europe. Roof shingles are a roof covering consisting of individual overlapping elements. These elements are typically flat, rectangular shapes laid in courses from the bottom edge of the roof up, with each ... Jul 31, 2023 ... The three-tab shingle, after all, covers a lot of ground. In comparison, laminated dimensional shingles have no cutouts but rather portions that ...When it comes to choosing the right roof shingles for your home, there are a variety of options to consider. Different types of roof shingles offer unique advantages and have varyi...Covering a roof with three-tab shingles requires three bundles for every 100 square feet of roof to be covered. Retailers sell shingles by the bundle and by the square, a unit equa...The symptoms of shingles include: Localized burning, tingling, itching, prickling pain that starts days to weeks before the rash appears. The pain varies by person but can be constant or come and ...You need to gently pry up the overlapping cap shingle next to the cap you want to replace. Back about 1 inch you’ll see a roofing nail. Slide the pry bar under the nail head and gently pry the ...A comprehensive look at Wood shingle Roofs. In many parts of the world, wood shingle roofing is a premium roofing system used to provide homes with the perfect rustic look. Wood shingles are roofing materials that are obtained by sawing blocks of wood. They were a common feature in the early 20th century, and they are still widely used even ...When it comes to choosing the right roof shingles for your home, there are several factors to consider. One of the most important aspects is the durability and longevity of the shi...Oct 13, 2019 ... Water resistant Fibre Cement Boards are then laid on top of the truss. The roofing shingles and then laid on top of these cement boards. They ...Steps for reshingling a roof. Pry off old roof shingles with pitch fork. Nail down loose roof sheathing to rafters. Cover roof deck with 30-pound felt underlayment; staple felt every 6 to 8 inches. Nail drip-edge flashing to lower edge of roof. Snap vertical chalk line down center of roof.The main difference between roofing staples and nails is that you typically use staples for felt underlayment, while you use nails for shingles. Staples are lighter and easier to maneuver with on roofs, while nail guns are heavier. However, different roofing nails last decades and can withstand severe wind, while staples may not hold in severe ...The most popular colors for shingles we’ve seen this year include: Light brown hues—sand, taupe, desert. Dark brown hues—autumnal brown, tree bark, weathered wood. Blue hues—denim, navy, sky, blue-green. Green hues—forest, moss, hunter. Off white hues—beige, stone, tan, khaki. Some …Step 5: Painting Asphalt Shingles. Fill the sprayer with paint and hold the nozzle 1-2 feet from the shingles. Then pull the trigger to start painting. The best way to spray-paint a shingle roof is from the top down and left to right. Move the sprayer about 3-4 inches from the peak, then paint across to the left.If your roof is under 10-years-old then the leak is most likely the result of poor workmanship. If your roof is over 15-years-old then your roof needs to be replaced rather than going the route of spot-repairs or a layover. A second layer of shingles will actually make it harder to identify when you should do a full roof replacement..