How to replace an asphalt roof shingle:Insert a putty knife under and above the damaged shingle to break the seal holding it down.Use a flat bar to pry up the damaged shingle and remove the nails, being careful not to damage the shingle above it.Cut off the damage tab of the shingle with a utility knife, or remove the entire piece.Slip the new shingle or tab in place, and secure it under the shingle above with 7/8” roofing nails.Once the damaged shingle has been replaced, lift the tab up and apply a dab of roof cement to seal the shingles to the roof.

If you’ve had a recent storm blow through…You may have noticed some missing roof shingles.Or maybe your roof is missing just one shingle.And you’re wondering.“Will my roof leak with one shingle missing?”Most of the time, when you see a missing shingle, you’re looking at one tab of a 3-tab shingle.With a strong gust of wind, the shingle tab tore apart, then blew off your roof and landed in your yard.If that’s the case.Where one shingle tab blew off your roof – you have a 1 in 3 chance that the missing shingle was sitting directly above an open seam between the shingles below.

However, even with the moderate level of protection provided by felt paper your roof needs immediate attention.Because a missing shingle left unfixed, could lead to a much bigger roof leak – especially in heavy rain.So yes.In this case (a torn shingle above a seam), your roof will leak if you have just one shingle missing.On the other hand.You may have a missing shingle that does not straddle a lower shingle seam.If that’s the case, it’s possible your roof may not leak at all.But, your roof still needs attention, because the exposed section of the lower shingle is not designed to perform for long when this happens.Here’s why.If you look closely, you will see that the area where you have a missing shingle is darker than the surrounding shingles on your roof.

If the roof shingles are missing or falling apart in this area, it is a sure sign that one needs to replace his or her roof. Rain and snow flow through valleys and get into the gutters. If the valley is defective, roof leaks are possible.Are the shingles missing? Missing shingles are another sign of a failing roof. Therefore, one needs to observe if all the tabs are intact.A homeowner needs to be concerned about the chimney flashing. If the flashing consists of roof tar or cement, it may have to be replaced with a water tight, long term fitting, of which a metal flashing system would be better.One also needs to check the gutters for shingle granules. Roofs often lose more granules at the end of their lifespan.A homeowner needs to check the attic to see if there is any sunlight coming through the roof boards. In addition, one should check for moisture in the insulation, which could indicate serious roofing problem.If one is building a brand new building, it is possible that a composition shingle roof can be installed so poorly that it is rendered useless from the start. If missing shingles and annoying leaks are becoming very common and a nuisance, one may need a new roof, no matter its age.

Use the proper safety precautions. Any time you're getting up on the roof you need to practice roof safety. Wear protective eyewear, heavy-duty gloves, and gripping boots appropriate for walking on the roof. Preferably, you'll also install roof jacks to have something to stand on, and harnesses to protect yourself. Never do roof work alone.
How you access the roof will depend upon the roof itself and the location of the damage. Always use a secure, sturdy ladder when you're climbing up on the roof, and have a helper to secure it at the base. When walking on the roof, always walk slowly and secure your footing before taking another step.
If you're just trying to assess the damage and replace a few damaged shingles, it might seem like overkill to install roof jacks and harnesses, but depending on the complexity and the height of your roof, it might be the safest option. Roof work isn't something to rush.

How to Replace Asphalt Shingles
Simple Instructions to Remove and Replace Asphalt Shingles on Your Roof.Asphalt shingle roofs, when properly installed, typically require very little maintenance — one of the main benefits of a shingle roof. However, there may be the odd occasion where a little fix is needed, and, fortunately, asphalt shingles can easily be removed and replaced in just seven steps. Even though the process is straightforward, IKO recommends that only properly trained professional roofing contractors engage in the shingling or repairing of roofs. Step One – Break the seal on the target shingle.
The images below depict Sedona Dynasty with ArmourZone shingles.In the photo below, the “target” shingle (perhaps it needs replacement due to damage from a falling object or roof pests) is located. (In these photos we’ve marked it with black spots.)
The first step obviously requires the removal of the nails holding that shingle to the roof deck. To access the nails, the shingle will need to be lifted, but it is likely bonded to the shingle below by the shingles’ asphalt sealant spots. Although this sealant bond is quite strong (strong enough for the shingles to resist wind uplift), it can be broken by sliding a flat pry bar carefully under the target shingle’s edge.
This sealant separation is best done in cool weather, as the sealant bond will be more easily sheared by the pry bar when cool — in hotter weather, the sealant will be more gooey and tenacious, and harder to separate cleanly.
A word of caution: If you are looking for a roofer in elk grove In cooler weather, the shingles will be stiffer than in warmer weather. Exercise care to avoid distorting the shingles more than necessary.

2. Slide the new shingle up into place. Be sure to align with the shingles of either side.Swap Shingles
If part of a shingle is missing, you'll have to replace the whole thing. First see if you have any leftover shingles from the last time the roof was worked on (with any luck, the builder or the roofer who handled the job left some behind). If not, you'll have to buy a bundle at a home center or lumberyard ($15 to $20 per square—100 sq. ft.—of standard three-tab shingles). If you can't find a perfect match, choose the closest one.Replacing a damaged shingle requires a hammer, a flat pry bar, a utility knife and a handful of 11/4-in. roofing nails. Each shingle is initially secured with four nails; when the next shingle course above is installed, however, its nails also pass through the top edge of the shingles in the course below.Begin removing the first row of nails by sliding the pry bar under the shingle immediately above the damaged one and gently lifting it to free it from the sealer strip. You'll see the first row of nails beneath.Slip the pry bar under the damaged shingle and pry upward. Once the nail pops up about 1/4 in., remove the pry bar, press the shingle down and pull out the nail. Repeat this procedure for the remaining three nails. Then push the pry bar under the shingle directly above the damaged one and remove the second row of nails the same way. After yanking all eight nails, pull out the damaged shingle.If the existing shingles are brittle, you may not be able to pry out the second row of nails without cracking a shingle. In that case, tear out the damaged shingle and cut V-notches in the replacement to fit around the four nails. Slide the new shingle up into place and secure it with four nails.

Fix Curled Corners
As asphalt shingles get older, their corners often begin to curl downward or upward. If you notice a shingle starting to curl, you can forestall the inevitable curling by gluing down the curled section.Use a caulking gun to apply a dab of roofing sealant (about $4 per 10-oz. tube) under the corner. Weigh it down with a brick (right); leave the weight in place for at least 24 hours until the sealant dries. That's all there is to it.Repair Cracked ShinglesIf a shingle is simply cracked or torn, you don't have to replace it—just repair it. Start by applying a thick bead of roofing sealant under the crack. Press the shingle down and apply a second bead of sealant on top of the crack. Then spread the sealant with a putty knife.The best part of this fix is that no one has to know you made it. It's easy to camouflage: Check the gutter for an accumulation of colored granules that have washed down the roof from the shingles. Then gather some into a small cup and sprinkle them over the sealant to mask the repair.A new roof is a pricey proposition. These simple repairs can keep your existing roof sound for years to come.