When Shingles Blew Off Your Roof: What All About Roofing Checks Next

A few missing shingles can expose the roof deck to rain, but the visible gap is not always the full extent of the damage. All About Roofing checks the missing area, the shingles surrounding it, the fasteners that held them, roof edges, flashing, and any signs that water has already entered the building. The first goal is to find out whether this is a small repair covering a few square feet or a larger wind-damage pattern affecting several slopes.

If shingles blew off roof sections during a wind event, look at the ground before looking up. Count any tabs or whole shingles that landed nearby, and keep them if they are dry and intact; their shape, color, and condition can help identify what was installed. A water mark on an upper-floor ceiling may be related, as A Ceiling Stain After Rain Can Point to a Shingle-Roof Leak explains, but a roof can also take on water before an indoor stain becomes visible.

Where Shingles Blew Off the Roof Tells Inspectors What to Check

The location of the missing shingles changes the inspection. Shingles missing near a ridge may point to loose ridge caps, failed nails, or wind getting beneath the upper course. Loss along a rake edge, which is the sloping edge at the end of a gable roof, can indicate that wind lifted the starter strip or that the edge shingles were not fully bonded. Missing shingles near an eave call for a close look at the drip edge, underlayment, and the first two courses above the gutter line.

All About Roofing also checks whether the exposed area is on one roof slope or appears in several places. A single missing shingle can result from one damaged tab or a nail problem. Three or four scattered areas, especially on the same wind-facing slope, can mean more shingles have loosened even though they have not yet detached. Lifted corners, broken sealant strips, and creases across a shingle are all warning signs that a replacement limited to the obvious gap may not be enough.

The roof deck beneath the shingles matters as much as the shingles themselves. Plywood or oriented strand board that looks dark, swollen, cracked, or soft may have been wet before the wind event. A small exposed section can absorb water quickly during repeated rain, particularly where underlayment is torn. Inspectors look for nail holes, punctures, gaps at deck seams, and damage around the exposed shingle course before deciding how far the repair needs to extend.

The Inspection Includes Fasteners, Sealant Strips, and Adjacent Courses

Each asphalt shingle is held by a row of nails and supported by the course below it. For a typical three-tab shingle, the nail line is usually about 5/8 inch above the cutouts; on laminated architectural shingles, the correct nail zone varies by product. Nails driven too high may leave too little shingle material holding the tab. Nails driven too low can become exposed and create a direct path for water.

Wind does not always pull a shingle completely free. It can break the factory-applied sealant strip that bonds one shingle to the next. That strip is normally near the lower portion of the shingle, under the overlying course. During an inspection, loose tabs may be gently checked for lifting, but they should not be bent sharply or pulled back far enough to crack them. Older shingles can become brittle, and a tab that flexes easily on a warm day may break in cooler conditions.

Age is part of the assessment. A roof that is only a few years old may have a localized installation or impact issue, while a roof approaching 15 to 20 years can have dried, cracked, or curled shingles across a wider area. Granules collected in gutters or at downspout outlets can also show surface wear. A small amount of loose granule material is common, but piles resembling coarse sand after the wind are worth documenting because granule loss leaves asphalt more exposed to sunlight and weather.

The inspector checks the shingles above, below, and beside the missing section. At least two courses above the visible opening may need examination because wind-driven rain can travel under lifted shingles rather than dropping straight down. The repair area sometimes extends beyond the missing pieces so that damaged nails, broken seals, and compromised underlayment can be addressed without creating a weak patch beside the original damage.

Flashing, Vents, Valleys, and Roof Edges Need a Separate Look

A missing shingle next to metal flashing needs more attention than one in an open field of shingles. Flashing is used where the roof meets a wall, chimney, vent pipe, skylight, or valley. Step flashing along a wall is installed in overlapping pieces, often one piece per shingle course. If wind lifts shingles beside it, water can reach the flashing overlap or the underlayment behind it even when the metal itself is not bent.

Valleys receive runoff from two roof slopes, so even a small opening there handles more water than an opening on a broad, flat shingle field. All About Roofing checks for cracked valley shingles, exposed fasteners, split underlayment, and debris that may be holding water in place. A roof vent is checked for a lifted flange, cracked plastic housing, loose screws, and damaged shingles around the base. Pipe boots are also examined because rubber collars can split with age and may leak without any missing shingles directly around them.

At the eaves, the inspection includes the metal drip edge and the fascia behind the gutter. A bent drip edge may allow water to run behind the gutter instead of into it. At the rake, loose edge metal or a missing starter course can leave the first shingle course easier for wind to lift. These details are small, but they affect how replacement shingles are secured and how water is directed after the repair.

What You Can Check Today and What the Repair May Involve

From the ground, look for shingles that are visibly raised, crooked, folded, or a different angle from the surrounding rows. Check the attic or upper ceiling area during daylight with the lights off: pinpoints of daylight, damp insulation, a musty smell, or fresh dark marks on wood can indicate a roof opening. Do not step on the roof or lean a ladder against damaged shingles. A ground-level photo taken from the same spot after each rainfall can also help show whether a loose section is growing.

A repair may involve replacing individual shingles, installing new underlayment in the exposed area, refastening or replacing flashing, and sealing the affected courses where appropriate. Matching the existing shingle is not always exact because color changes with age and sun exposure. One bundle of asphalt shingles commonly covers about 32 to 33 square feet of roof surface, but the actual repair quantity depends on waste, the number of damaged courses, and whether shingles must be removed around a valley, vent, or wall intersection.

The repair scope should distinguish between shingles that are missing, shingles that are creased or unsealed, and components that are damaged underneath. Ask for the number of shingles or square feet being replaced, whether underlayment is exposed or torn, and whether flashing or roof-edge metal needs work. A clear inspection record with photos of the missing area, nearby lifted tabs, and any interior moisture signs makes it easier to monitor the roof through the next rainstorm and to compare conditions if additional shingles loosen later.