Spotting Hail Bruising and Granule Loss from the Ground

Why Ground-Level Scouting Protects You and Your Roof

Severe weather along the Wasatch Front and across Utah Valley frequently brings localized hail cells. When hailstones hit an asphalt shingle roof, the instinct for many homeowners is to pull a ladder out of the garage and climb up for a close look. Walking on a roof immediately following a storm is both a personal fall hazard and a direct threat to the roofing material itself.

Hail impacts weaken the bond between the mineral granules and the underlying asphalt mat. Stepping directly on shingles that have sustained impact damage can grind remaining loose granules away, crush bruised fiberglass mats, and accelerate water intrusion points. Fortunately, you can collect substantial, reliable evidence of hail damage directly from the ground without putting your safety or your roof covering at risk.

Check Collateral Surfaces First

Hailstones do not fall selectively on shingles; they strike every exposed surface around your property. Because roofing shingles are textured and can hide minor dents at a distance, inspecting "collateral" surfaces at eye level is the most reliable first step in confirming hail size and impact force.

Start by walking the perimeter of your home and checking softer materials for fresh impact marks:

• Metal gutters and downspouts: Look for small, rounded indentations on downspout elbows and along gutter faces.
• Air conditioning condenser units: Check the thin metal cooling fins on exterior units. Hail leaves distinct, crushed patterns in these fins.
• Window frames, wraps, and screens: Inspect aluminum cladding, vinyl window sashes, and painted trim for small chips, dents, or splinters.
• Painted decks and fencing: Fresh impacts frequently knock loose oxidized paint or leave light-colored "spatter" marks on weathered wood and vinyl fence posts.
• Exterior fixtures: Check painted metal mailboxes, barbecue lids, and low-voltage landscape lighting.

If you find rounded dents in metal surfaces larger than a dime, your roof slopes absorbed similar or greater kinetic energy during the storm.

Inspecting Gutters, Downspouts, and Runoff

Asphalt shingles are covered in factory-applied mineral granules designed to protect the petroleum-based asphalt layer from Utah’s intense high-altitude ultraviolet rays. When hail strikes a shingle, it dislodges these granules. The dislodged granules wash down the roof during the remainder of the rainfall and discharge out of the drainage system.

Walk to each downspout location around the foundation. Check concrete splash pads, driveway discharge points, and landscaped beds directly under gutter outlets. While all asphalt shingles shed a nominal amount of granules over years of normal aging, a severe hail impact causes immediate, heavy shedding.

Look for thick accumulations of granules that resemble coarse, dark sand piled up at the mouth of downspout elbows. If you find noticeable mounds of granules immediately following a storm, the protective surfacing on your roof has taken a significant blow.

Reading Shingles from the Ground with Binoculars

Once you have confirmed collateral damage and granule runoff, step back toward the sidewalk or the rear edge of your yard with a pair of binoculars or a smartphone featuring a high-power optical zoom. Position yourself so the sun is behind you or across the roof slope to reveal texture differences.

Focus your attention on the roof slopes that faced the incoming storm. In Utah, summer storm cells often push from the south or southwest, or drop down abruptly from nearby canyon mouths. When scanning individual shingles, look for:

• Dark, circular pockmarks: When granules are knocked free in a concentrated area, the underlying black asphalt coating is exposed. From the street, these spots appear as small, dark, round blemishes across the field of shingles.
• Scalloped or broken shingle edges: Hail strikes along the exposed bottom lip of a shingle often break off small crescent-shaped pieces of the asphalt edge.
• Missing or shifted shingle tabs: Strong winds accompanying the hail can lift bruised or weakened tabs, leaving uneven shadow lines or torn corners visible against the skyline.

How Bruising Differs from Routine Granule Shedding

Understanding what hail bruising actually does will help you differentiate storm damage from normal wear. An asphalt shingle is constructed around a woven fiberglass mat saturated in asphalt and coated with granules. A true hail "bruise" occurs when a hailstone strikes the surface with enough force to fracture the interior fiberglass mat without necessarily punching a hole straight through the shingle.

When the mat fractures, the bond holding the granules fails in a localized, circular pattern. Over the coming weeks and months, the loose granules slough off, exposing the raw asphalt underneath. Because the fiberglass core has lost its structural integrity, temperature swings—such as Utah’s freezing winters and hot summer afternoons—cause the damaged area to flex, dry out, crack, and eventually leak.

Normal aging causes granules to shed gradually and evenly across entire slopes, particularly inside water run-off channels between shingles. Hail bruising, by contrast, appears as random, scattered, impact-centered divots across both the flat body and the edges of the shingle.

Documenting Your Findings Before Calling for an Inspection

If your ground-level check reveals dented metal downspouts, granules piled at splash blocks, and visible dark impact marks on the shingles, document everything with clear photos. Take wide shots showing the whole side of the house, followed by close-ups of dented surfaces with a small object (like a coin) placed nearby for scale. Note the exact date and estimated time of the storm.

This basic evidence provides a clear foundation if an insurance adjuster needs to evaluate the property. It also gives a professional inspector an immediate reference point for where to focus on the roof surface.

If you suspect your roof sustained hail bruising or significant granule loss after a storm, reach out to DFNDR Roofing to schedule a comprehensive, professional roof inspection. You can call or text DFNDR directly to get an on-site project manager out to assess your roof's condition.